Samsung Multixpress k7 Series k7400 k7500 k7600

A3 Mono Copier
MultiXpress K7 series
SL-K7600GX / K7500GX /
K7400GX, SL-K7600LX / K7500LX
/ K7400LX
(Ver 1.12)
SERVICE MANUAL
A3 Mono Copier Contents
1. Precautions
2. Product Specifications and Description
3. Disassembly and Reassembly
4. Troubleshooting
5. Connection Diagram
6. Reference Information
Refer to the service manual in the GSPN (see the rear cover) for more information.
Contents
Contents
1. Precautions ........................................................................................................................................1 − 1
1.1. Safety warning ..........................................................................................................................1 − 1
1.2. Caution for safety ......................................................................................................................1 − 2
1.2.1. Toxic material...............................................................................................................1 − 2
1.2.2. Electric shock and fire safety precautions ...........................................................................1 − 2
1.2.3. Handling precautions .....................................................................................................1 − 4
1.2.4. Assembly and Disassembly precautions .............................................................................1 − 4
1.2.5. Disregarding this warning may cause bodily injury ..............................................................1 − 5
1.3. ESD precautions ........................................................................................................................1 − 6
2. Product Specifications and Description ....................................................................................................2 − 1
2.1. Product Overview ......................................................................................................................2 − 1
2.2. Specifications............................................................................................................................2 − 2
2.2.1. General Specification .....................................................................................................2 − 2
2.2.2. Print Specifications ........................................................................................................2 − 4
2.2.3. Scan specification ..........................................................................................................2 − 6
2.2.4. Copy specification .........................................................................................................2 − 7
2.2.5. Fax specification ...........................................................................................................2 − 8
2.2.6. Paper Handling specification.......................................................................................... 2 − 10
2.2.7. Network and Software specification ................................................................................ 2 − 13
2.2.8. Supplies..................................................................................................................... 2 − 16
2.2.9. Maintenance Parts ....................................................................................................... 2 − 17
2.2.10. Option....................................................................................................................... 2 − 19
2.3. Machine External View............................................................................................................. 2 − 24
2.4. Feeding System ....................................................................................................................... 2 − 28
2.4.1. Feeding System Overview............................................................................................. 2 − 28
2.4.2. Main Components and functions .................................................................................... 2 − 29
2.4.3. Cassette (Tray)............................................................................................................ 2 − 34
2.4.4. Pick-Up Unit .............................................................................................................. 2 − 35
2.4.5. Registration Unit ......................................................................................................... 2 − 36
2.4.6. MPF(Multi-Purpose Feeder) Unit ................................................................................... 2 − 37
2.5. Image Creation........................................................................................................................ 2 − 38
2.5.1. Printing process overview ............................................................................................. 2 − 38
2.5.2. Imaging Unit .............................................................................................................. 2 − 39
2.5.2.1. Drum Unit Overview ..................................................................................... 2 − 39
2.5.2.2. Drum drive .................................................................................................. 2 − 40
2.5.2.3. Deve(Development) Unit ................................................................................ 2 − 41
2.5.3. Toner Cartridge ........................................................................................................... 2 − 43
2.5.4. PTB (Paper Transfer Belt) Unit ...................................................................................... 2 − 44
i Copyright© 1995-2017 SAMSUNG. All rights reserved.

Contents
2.5.4.1. PTB unit overview ........................................................................................ 2 − 44

2.5.4.2. Transfer belt drive ......................................................................................... 2 − 45
2.5.4.3. Cleaning Blade ............................................................................................. 2 − 46
2.6. Fuser Unit .............................................................................................................................. 2 − 47
2.6.1. Fuser Unit Overview .................................................................................................... 2 − 47
2.6.2. Fuser Unit drive .......................................................................................................... 2 − 48
2.6.3. Fuser unit temperature control........................................................................................ 2 − 49
2.7. Laser Scanning Unit (LSU)........................................................................................................ 2 − 50
2.7.1. LSU overview............................................................................................................. 2 − 50
2.7.2. Laser Scanning Optical path .......................................................................................... 2 − 51
2.7.3. Laser synchronizing detectors ........................................................................................ 2 − 52
2.8. Drive System .......................................................................................................................... 2 − 53
2.8.1. Drive Motors .............................................................................................................. 2 − 53
2.8.2. Main Drive Unit(OPC_Deve_ITB) ................................................................................. 2 − 55
2.8.3. Pick-Up and CST Lift drive........................................................................................... 2 − 56
2.8.4. Feed Drive ................................................................................................................. 2 − 57
2.8.5. Regi Drive ................................................................................................................. 2 − 58
2.8.6. Fuser(Release)_Exit Drive ............................................................................................ 2 − 59
2.8.7. Toner Supply Drive...................................................................................................... 2 − 60
2.8.8. Toner-Reservoir Drive .................................................................................................. 2 − 61
2.8.9. CST Lock Drive.......................................................................................................... 2 − 62
2.9. Scanner System ....................................................................................................................... 2 − 63
2.9.1. Scanner System Overview............................................................................................. 2 − 63
2.9.2. Scanning System Components ....................................................................................... 2 − 66
2.9.3. Caution for moving the scanner...................................................................................... 2 − 72
2.10. Dual Scan Document Feeder(DSDF) for LX model ........................................................................ 2 − 73
2.10.1. DSDF overview .......................................................................................................... 2 − 73
2.10.2. Electrical parts location ................................................................................................ 2 − 74
2.10.3. DSDF Drive System .................................................................................................... 2 − 76
2.10.3.1. DSDF Original Pick-Up Assembly ................................................................... 2 − 77
2.10.3.2. DSDF Original Regi. Drive............................................................................. 2 − 78
2.10.3.3. Original Scanning and Feed-Out Drive .............................................................. 2 − 79
2.11. Dual Scan Document Feeder(DSDF) for GX model........................................................................ 2 − 80
2.11.1. DSDF overview .......................................................................................................... 2 − 80
2.11.2. Electrical parts location ................................................................................................ 2 − 81
2.11.3. DSDF Drive System .................................................................................................... 2 − 84
2.11.3.1. DSDF Original Pick-Up Assembly ................................................................... 2 − 85
2.11.3.2. DSDF Original Pre-Regi Assembly................................................................... 2 − 86
2.11.3.3. DSDF Original Regi Assembly ........................................................................ 2 − 87
2.11.3.4. DSDF Original Scanning Drive Assembly.......................................................... 2 − 88
Copyright© 1995-2017 SAMSUNG. All rights reserved. ii

Contents
2.11.3.5. DSDF Original Exit Assembly......................................................................... 2 − 89

2.11.3.6. DSDF Original Lifting Assembly ..................................................................... 2 − 90
2.11.3.7. DSDF Original Pick-up_Reverse roller Release Assembly .................................... 2 − 91
2.11.3.8. DSDF Scan in Roller Release Assembly ............................................................ 2 − 92
2.12. Hardware Configuration ............................................................................................................ 2 − 93
2.12.1. Main Controller (Main Board) ....................................................................................... 2 − 95
2.12.2. HUB PBA................................................................................................................ 2 − 106
2.12.3. SMPS (Switching Mode Power Supply) PBA (Type5) ...................................................... 2 − 108
2.12.4. SMPS (Switching Mode Power Supply) PBA (Type3R).................................................... 2 − 110
2.12.5. SMPS (Switching Mode Power Supply) PBA (Type4) ...................................................... 2 − 112
2.12.6. Fuser Drive Board (FDB)............................................................................................ 2 − 114
2.12.7. HVPS (High Voltage Power Supply) board..................................................................... 2 − 115
2.12.8. Eraser PBA .............................................................................................................. 2 − 117
2.12.9. Fuser PBA ............................................................................................................... 2 − 117
2.12.10. Waste Sensor PBA..................................................................................................... 2 − 118
2.12.11. Paper Size sensor PBA ............................................................................................... 2 − 118
2.12.12. OPE Unit ................................................................................................................. 2 − 119
2.12.13. DSDF PBA .............................................................................................................. 2 − 121
2.12.14. Scan Joint PBA ......................................................................................................... 2 − 122
2.12.15. CCDM PBA ............................................................................................................. 2 − 123
2.12.16. WLED IF PBA ......................................................................................................... 2 − 124
2.12.17. WLED PBA ............................................................................................................. 2 − 124
2.13. Double Cassette Feeder(DCF) Unit .......................................................................................... 2 − 125
2.14. High Capacity Feeder(HCF) Unit ............................................................................................. 2 − 131
2.15. High Capacity Feeder Side Unit (Large Cassette Tray Unit) ........................................................... 2 − 137
3. Disassembly and Reassembly ................................................................................................................3 − 1
3.1. Precautions when replacing parts ..................................................................................................3 − 1
3.1.1. Precautions when assembling and disassembling .................................................................3 − 1
3.1.2. Precautions when handling PBA.......................................................................................3 − 1
3.1.3. Releasing Plastic Latches ................................................................................................3 − 2
3.2. Maintenance .............................................................................................................................3 − 3
3.2.1. Machine Cleaning for maintenance ...................................................................................3 − 3
3.2.1.1. Cleaning the scan glass.....................................................................................3 − 3
3.2.1.2. Cleaning the DSDF white bar_CIS .....................................................................3 − 4
3.2.1.3. Cleaning the paper dust stick .............................................................................3 − 5
3.2.2. Replacing the maintenance part ........................................................................................3 − 7
3.2.2.1. Development(Deve) unit...................................................................................3 − 7
3.2.2.2. Fuser Unit......................................................................................................3 − 9
3.2.2.3. Paper Transfer Belt........................................................................................ 3 − 10
3.2.2.4. Pick-Up_Separation_Forward roller.................................................................. 3 − 11
iii Copyright© 1995-2017 SAMSUNG. All rights reserved.

Contents
3.2.2.5. MP Pick Up_Reverse_Forward roller ................................................................ 3 − 12

3.2.2.6. DSDF Pick-up roller Assy (LX model) .............................................................. 3 − 13
3.2.2.7. DSDF reverse roller (LX model) ...................................................................... 3 − 14
3.2.2.8. DSDF Pick-up roller Assy (GX model).............................................................. 3 − 16
3.2.2.9. DSDF reverse roller Assy (GX model) .............................................................. 3 − 17
3.3. Replacing the main SVC part ..................................................................................................... 3 − 19
3.3.1. Left Cover.................................................................................................................. 3 − 19
3.3.2. Rear Cover................................................................................................................. 3 − 19
3.3.3. LSU.......................................................................................................................... 3 − 20
3.3.4. Temperature_Humidity sensor ....................................................................................... 3 − 20
3.3.5. Reservoir Assy............................................................................................................ 3 − 21
3.3.6. OPE Unit ................................................................................................................... 3 − 22
3.3.7. Main board................................................................................................................. 3 − 23
3.3.8. HVPS board ............................................................................................................... 3 − 23
3.3.9. SMPS board ............................................................................................................... 3 − 24
3.3.9.1. SMPS board 1 .............................................................................................. 3 − 24
3.3.9.2. SMPS board 2 .............................................................................................. 3 − 25
3.3.9.3. SMPS board 3 .............................................................................................. 3 − 26
3.3.10. FDB (Fuser Drive Board).............................................................................................. 3 − 27
3.3.11. SMPS Fan.................................................................................................................. 3 − 28
3.3.12. Main Drive Unit.......................................................................................................... 3 − 28
3.3.13. Inductor unit............................................................................................................... 3 − 29
3.3.14. Auto-Closing unit ........................................................................................................ 3 − 30
3.3.15. Pick-up Drive unit 1..................................................................................................... 3 − 31
3.3.16. Pick-up Drive unit 2..................................................................................................... 3 − 31
3.3.17. Regi Drive Unit........................................................................................................... 3 − 32
3.3.18. Feed Drive Unit .......................................................................................................... 3 − 32
3.3.19. Fuser Fan................................................................................................................... 3 − 33
3.3.20. Fuser_Exit Drive unit ................................................................................................... 3 − 34
3.3.21. Side Door open sensor.................................................................................................. 3 − 34
3.3.22. Deve Fan ................................................................................................................... 3 − 35
3.3.23. Auto Size sensor ......................................................................................................... 3 − 36
3.3.24. Inner cover................................................................................................................. 3 − 37
3.3.25. Front Cover Open sensor .............................................................................................. 3 − 39
3.3.26. Waste Toner Container sensor ........................................................................................ 3 − 40
3.3.27. HDD (Hard Disk Drive)................................................................................................ 3 − 40
3.3.28. High Voltage Terminal.................................................................................................. 3 − 42
3.3.29. Side Unit ................................................................................................................... 3 − 43
3.3.29.1. Fuser-Out Sensor .......................................................................................... 3 − 44
3.3.29.2. Feed 2 sensor ............................................................................................... 3 − 45
Copyright© 1995-2017 SAMSUNG. All rights reserved. iv

Contents
3.3.29.3. MP Unit ...................................................................................................... 3 − 47

3.3.29.4. MP empty sensor .......................................................................................... 3 − 49
3.3.29.5. MP paper length sensor .................................................................................. 3 − 49
3.3.29.6. MP solenoid ................................................................................................. 3 − 50
3.3.30. Pick-Up Unit 2............................................................................................................ 3 − 51
3.3.30.1. Pick up Lifting sensor and Empty sensor............................................................ 3 − 51
3.3.30.2. Pre-Feed sensor 2 .......................................................................................... 3 − 52
3.3.31. Pick-Up Unit 1............................................................................................................ 3 − 53
3.3.31.1. Pick-Up Lifting sensor and Empty sensor........................................................... 3 − 53
3.3.31.2. Pre-Feed sensor 1 .......................................................................................... 3 − 54
3.3.32. Regi Unit ................................................................................................................... 3 − 54
3.3.32.1. Regi sensor .................................................................................................. 3 − 55
3.3.33. Exit Unit.................................................................................................................... 3 − 56
3.3.33.1. Return sensor ............................................................................................... 3 − 57
3.3.33.2. Duplex 1 sensor ............................................................................................ 3 − 58
3.3.33.3. Exit 1 Bin Full sensor..................................................................................... 3 − 58
3.3.33.4. Exit Gate Solenoid ........................................................................................ 3 − 59
3.3.34. DSDF Unit for LX model.............................................................................................. 3 − 60
3.3.34.1. DSDF PBA .................................................................................................. 3 − 61
3.3.34.2. DSDF main motor ......................................................................................... 3 − 62
3.3.34.3. DSDF paper length sensor............................................................................... 3 − 63
3.3.35. DSDF Unit for GX model ............................................................................................. 3 − 65
3.3.35.1. DSDF PBA .................................................................................................. 3 − 66
3.3.35.2. DSDF Stacker Sensor..................................................................................... 3 − 67
3.3.36. Scanner Unit(Platen Unit) ............................................................................................. 3 − 69
3.3.36.1. Scan Glass ................................................................................................... 3 − 71
3.3.36.2. LED Lamp Module........................................................................................ 3 − 73
3.3.36.3. Scan Imaging Unit......................................................................................... 3 − 74
3.3.36.4. Scan Joint PBA............................................................................................. 3 − 77
3.3.36.5. APS Sensor.................................................................................................. 3 − 78
3.3.37. ADF White Sponge...................................................................................................... 3 − 79
3.3.38. Double Cassette Feeder(DCF) Unit ................................................................................ 3 − 80
3.3.38.1. DCF Feed Motor ........................................................................................... 3 − 80
3.3.38.2. DCF Pick-up Motor ....................................................................................... 3 − 81
3.3.38.3. DCF PBA .................................................................................................... 3 − 82
3.3.39. High Capacity Feeder(HCF) Unit .................................................................................. 3 − 83
3.3.39.1. HCF Feed Motor ........................................................................................... 3 − 83
3.3.39.2. HCF Pick-up Motor ....................................................................................... 3 − 84
3.3.39.3. HCF PBA .................................................................................................... 3 − 85
3.3.39.4. HCF Lift-up Motor ........................................................................................ 3 − 86
v Copyright© 1995-2017 SAMSUNG. All rights reserved.

Contents
3.3.39.5. HCF Shaft Motor .......................................................................................... 3 − 87

3.3.40. High Capacity Feeder Side Unit (Large Cassette Tray Unit)................................................. 3 − 88
3.3.40.1. LCT Feed Motor ........................................................................................... 3 − 88
3.3.40.2. LCT Pick-up Motor ....................................................................................... 3 − 89
3.3.40.3. LCT PBA .................................................................................................... 3 − 89
3.3.40.4. LCT Lift-up Motor ........................................................................................ 3 − 91
4. Troubleshooting ..................................................................................................................................4 − 1
4.1. Control panel ............................................................................................................................4 − 1
4.1.1. Display screen and useful buttons .....................................................................................4 − 2
4.1.1.1. Menu navigation .............................................................................................4 − 2
4.1.1.2. Home Screen Overview....................................................................................4 − 3
4.1.1.3. Customizing your home screen ..........................................................................4 − 4
4.1.1.4. Notification Bar ..............................................................................................4 − 6
4.2. Understanding the LEDs .............................................................................................................4 − 7
4.3. Updating Firmware ....................................................................................................................4 − 8
4.3.1. Updating from the Printer Control Panel ............................................................................4 − 8
4.3.2. Updating from the Network ............................................................................................4 − 9
4.4. JAM removal .......................................................................................................................... 4 − 12
4.4.1. Clearing original document jams .................................................................................... 4 − 12
4.4.2. Clearing paper jams ..................................................................................................... 4 − 15
4.5. Service Mode (Tech Mode)........................................................................................................ 4 − 20
4.5.1. Entering the Service Mode ............................................................................................ 4 − 20
4.5.2. Service Mode Menu Tree ............................................................................................. 4 − 21
4.5.3. Information ................................................................................................................ 4 − 26
4.5.3.1. General ....................................................................................................... 4 − 26
4.5.3.2. Supply Status ............................................................................................... 4 − 26
4.5.3.3. Software Version........................................................................................... 4 − 27
4.5.3.4. Service Hours ............................................................................................... 4 − 27
4.5.3.5. Fault Log..................................................................................................... 4 − 27
4.5.3.6. Print Reports ................................................................................................ 4 − 27
4.5.3.7. Export Reports.............................................................................................. 4 − 28
4.5.4. Maintenance Counts..................................................................................................... 4 − 29
4.5.4.1. Fault Count ................................................................................................. 4 − 29
4.5.4.2. Jam Count ................................................................................................... 4 − 29
4.5.4.3. Part Replacement Count ................................................................................. 4 − 30
4.5.5. Diagnostics ................................................................................................................ 4 − 31
4.5.5.1. Engine Diagnostics........................................................................................ 4 − 31
4.5.5.2. Fax Diagnostics ............................................................................................ 4 − 40
4.5.5.3. Scanner Diagnostics....................................................................................... 4 − 45
4.5.5.4. Adjustment .................................................................................................. 4 − 49
Copyright© 1995-2017 SAMSUNG. All rights reserved. vi

Contents
4.5.5.5. Image Management ...................................................................................... 4 − 57

4.5.5.6. Print Test Patterns ......................................................................................... 4 − 57
4.5.6. Service Functions ........................................................................................................ 4 − 58
4.5.6.1. Main Memory Clear ...................................................................................... 4 − 58
4.5.6.2. Hard Disk Maintenance .................................................................................. 4 − 58
4.5.6.3. Count Setting of Large Page ........................................................................... 4 − 58
4.5.6.4. Network Port................................................................................................ 4 − 59
4.5.6.5. Debug Log................................................................................................... 4 − 59
4.5.6.6. Capture Log ................................................................................................. 4 − 59
4.5.6.7. Network Packet Capture ................................................................................. 4 − 60
4.5.6.8. System Recovery .......................................................................................... 4 − 61
4.5.6.9. TR Control Mode .......................................................................................... 4 − 63
4.5.6.10. Clear System Cache....................................................................................... 4 − 64
4.5.6.11. Hibernation .................................................................................................. 4 − 64
4.5.6.12. Paper Low Warning Message........................................................................... 4 − 64
4.5.6.13. Part Replacement Alert................................................................................... 4 − 64
4.5.6.14. FDI ............................................................................................................ 4 − 65
4.5.6.15. EIUL (End of Image Unit Life) ........................................................................ 4 − 65
4.5.6.16. SFE (Special Feature Enablement).................................................................... 4 − 65
4.5.6.17. Dealer ID..................................................................................................... 4 − 66
4.5.6.18. Envelope Rotate............................................................................................ 4 − 66
4.5.6.19. Drain .......................................................................................................... 4 − 67
4.6. Error Code and Troubleshooting ................................................................................................. 4 − 68
4.6.1. 11–2Txx (Paper mismatch error) .................................................................................... 4 − 69
4.6.2. 61–1xxx (System Error)................................................................................................ 4 − 70
4.6.3. A1–xxxx (Motor error) ................................................................................................. 4 − 71
4.6.4. A2–xxxx (Fan error) .................................................................................................... 4 − 76
4.6.5. A3–xxxx (Sensor error) ................................................................................................ 4 − 78
4.6.6. C1–xxxx (Toner cartridge error) ..................................................................................... 4 − 81
4.6.7. C3–xxxx (Drum unit error)............................................................................................ 4 − 84
4.6.8. C6–xxxx (Fuser unit error) ............................................................................................ 4 − 88
4.6.9. C7–xxxx (Waste toner container error) ............................................................................ 4 − 89
4.6.10. C8–xxxx (Developer error)............................................................................................ 4 − 91
4.6.11. C9–xxxx (Transfer Belt error) ........................................................................................ 4 − 92
4.6.12. H1–xxxx (Double Cassette Feeder Unit Error) .................................................................. 4 − 94
4.6.13. H1–xxxx (High Capacity Feeder Unit Error)................................................................... 4 − 107
4.6.14. H1–xxxx (High Capacity Feeder Side Unit(LCT Unit) Error)............................................. 4 − 113
4.6.15. H2–xxxx (Finisher error) ............................................................................................ 4 − 121
4.6.16. Mx–xxxx (Jam error) ................................................................................................. 4 − 122
4.6.17. Mx–xxxx (Tray not install_Paper empty_Outbin full) ....................................................... 4 − 133
vii Copyright© 1995-2017 SAMSUNG. All rights reserved.

Contents
4.6.18. Sx–xxxx (System error) .............................................................................................. 4 − 142

4.6.19. U1–xxxx (Fuser error) ................................................................................................ 4 − 162
4.6.20. U2–xxxx (LSU error) ................................................................................................. 4 − 165
4.6.21. U3–xxxx (Document Feeder error_DSDF for LX model) .................................................. 4 − 168
4.6.22. U3–xxxx (Document Feeder error_DSDF for GX model).................................................. 4 − 174
4.7. Image quality problems and solutions ........................................................................................ 4 − 180
4.7.1. Vertical Black Lines................................................................................................... 4 − 183
4.7.2. Vertical Light or White Lines....................................................................................... 4 − 184
4.7.3. Horizontal periodic Black Band or Dot .......................................................................... 4 − 186
4.7.4. Horizontal Periodic Light/Dark Lines, Dots. ................................................................... 4 − 187
4.7.5. Blurred image ........................................................................................................... 4 − 188
4.7.6. Foggy image............................................................................................................. 4 − 189
4.7.7. Light image .............................................................................................................. 4 − 190
4.7.8. Uneven pitch and jitter image ...................................................................................... 4 − 191
4.7.9. Skewed image........................................................................................................... 4 − 192
4.7.10. Poor fusing performance ............................................................................................. 4 − 193
4.7.11. Stain on the paper back side......................................................................................... 4 − 194
4.7.12. Setting Standard Tone ................................................................................................ 4 − 195
4.7.13. Scan Waveform Drop Image ........................................................................................ 4 − 198
4.8. Other Errors.......................................................................................................................... 4 − 200
4.8.1. Image system problem................................................................................................ 4 − 200
4.8.2. Fuser problem........................................................................................................... 4 − 203
4.8.3. Scanner and Document Feeder problem ......................................................................... 4 − 206
4.8.4. Drive unit problem .................................................................................................... 4 − 210
4.8.5. Feeding system problem ............................................................................................. 4 − 211
4.8.6. LSU problem............................................................................................................ 4 − 213
4.8.7. Electrical circuit problem ............................................................................................ 4 − 214
4.9. Adjustment........................................................................................................................... 4 − 219
4.9.1. Adjusting the ADF(DSDF) skew .................................................................................. 4 − 219
4.9.2. Adjusting the Scan FR Carriage Flatness........................................................................ 4 − 221
4.9.3. Adjusting the Scan Top Skew ...................................................................................... 4 − 223
4.10. SPDS (Smart Printer Diagnostic System) Application ................................................................... 4 − 225
4.10.1. SPDS App Installation and Login ................................................................................. 4 − 226
4.10.1.1. SPDS App Installation ................................................................................. 4 − 226
4.10.1.2. User Registration Request............................................................................. 4 − 227
4.10.1.3. Change_Reset Password ............................................................................... 4 − 228
4.10.1.4. Login ........................................................................................................ 4 − 229
4.10.1.5. Select Connect Method ................................................................................ 4 − 231
4.10.1.6. Consent to customer information .................................................................... 4 − 234
4.10.2. SPDS Menu Introduction ............................................................................................ 4 − 235
Copyright© 1995-2017 SAMSUNG. All rights reserved. viii

Contents
4.10.2.1. Error Mode ................................................................................................ 4 − 235

4.10.2.2. Diagnosis Mode .......................................................................................... 4 − 240
4.10.2.3. Test Mode.................................................................................................. 4 − 241
4.10.2.4. Information Mode ....................................................................................... 4 − 242
4.10.2.5. Service Mode ............................................................................................. 4 − 244
4.10.3. Corrective Upload ..................................................................................................... 4 − 249
4.10.4. Exceptions ............................................................................................................... 4 − 250
5. Connection Diagram ............................................................................................................................5 − 1
5.1. Connection Diagram (FUSER_EXIT_DUPLEX_TONER) ................................................................5 − 1
5.2. Connection Diagram (Scanner).....................................................................................................5 − 2
5.3. Connection Diagram (LSU_OPE_USB) .........................................................................................5 − 3
5.4. Connection Diagram (Side_MP_Feed_Regi_Pick-Up) ......................................................................5 − 4
5.5. Connection Diagram (OPC_WTB_CST Lock) ................................................................................5 − 5
5.6. Connection Diagram (HVPS_SMPS_FDB).....................................................................................5 − 6
6. Reference Information..........................................................................................................................6 − 1
6.1. Tools for Troubleshooting............................................................................................................6 − 1
6.2. Glossary...................................................................................................................................6 − 3
6.3. Model Name and Code ...............................................................................................................6 − 9
6.4. Document Revision List............................................................................................................ 6 − 10
ix Copyright© 1995-2017 SAMSUNG. All rights reserved.

1. Precautions
1. Precautions
In order to prevent accidents and damages to the equipment please read the precautions listed below carefully before
servicing the product and follow them closely.
1.1. Safety warning
1) Only to be serviced by a factory trained service technician.

High voltages and lasers inside this product are dangerous. This product should only be serviced by a factory trained
service technician.
2) Use only Samsung replacement parts.

There are no user serviceable parts inside the product. Do not make any unauthorized changes or additions to the
product as these could cause the product to malfunctions and create an electric shocks or fire hazards.
3) Laser Safety Statement

The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR, chapter 1 Subchapter J for
Class I(1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of
IEC/EN 60825-1:2014. Class I laser products are not considered to be hazardous. The laser system and printer are
designed so there is never any human access to laser radiation above a Class I level during normal operation, user
maintenance or prescribed service condition.
• Wavelength: 795 nm
• Beam divergence
- Paraller: 13 degrees
- Perpendicular: 35 degrees
• Maximum power of energy output: 17 mW
WARNING
Never operate or service the product with the protective cover removed from Laser/Scanner assembly. The reflected
beam, although invisible, can damage your eyes.
When using this product, these basic safety precautions should always be followed to reduce risk of fire, electric
shock, and personal injury.
4) Lithium battery not replaceable by user
Copyright© 1995-2017 SAMSUNG. All rights reserved. 1-1

1. Precautions
1.2. Caution for safety
1.2.1. Toxic material
This product contains toxic materials that could cause illness if ingested.
1) Please keep imaging unit and toner cartridge away from children. The toner powder contained in the imaging unit and
toner cartridge may be harmful, and if swallowed, you should contact a doctor.
1.2.2. Electric shock and fire safety precautions
Failure to follow the following instructions could cause electric shock or potentially cause a fire.
1) Use only the correct voltage, failure to do so could damage the product and potentially cause a fire or electric shock.
2) Use only the power cable supplied with the product. Use of an incorrectly specified cable could cause the cable to
overheat and potentially cause a fire.
3) Do not overload the power socket, this could lead to overheating of the cables inside the wall and could lead to a fire.
4) Do not allow water or other liquids to spill into the product, this can cause electric shock. Do not allow paper clips, pins
or other foreign objects to fall into the product, these could cause a short circuit leading to an electric shock or fire hazard.
5) Never touch the plugs on either end of the power cable with wet hands, this can cause electric shock. When servicing
the product, remove the power plug from the wall socket.
6) Use caution when inserting or removing the power cord. When removing the power cord, grip it firmly and pull. The
power cord must be inserted completely, otherwise a poor contact could cause overheating leading to a fire.
7) Take care of the power cable. Do not allow it to become twisted, bent sharply around corners or power cable may be
damaged. Do not place objects on top of the power cable. If the power cable is damaged it could overheat and cause a
fire. Exposed cables could cause an electric shock. Replace the damaged power cable immediately, do not reuse or
repair the damaged cable. Some chemicals can attack the coating on the power cable, weakening the cover or exposing
cables causing fire and shock risks.
1-2 Copyright© 1995-2017 SAMSUNG. All rights reserved.

1. Precautions
8) Ensure that the power sockets and plugs are not cracked or broken in any way. Any such defects should be repaired
immediately. Take care not to cut or damage the power cable or plugs when moving the machine.
9) Use caution during thunder or lightning storms. Samsung recommends that this machine be disconnected from the
power source when such weather conditions are expected. Do not touch the machine or the power cord if it is still
connected to the wall socket in these weather conditions.
10) Avoid damp or dusty areas, install the product in a clean well ventilated location. Do not position the machine near a
humidifier or in front of an air conditioner. Moisture and dust built up inside the machine can lead to overheating and
cause a fire or cause parts to rust.
11) Do not position the product in direct sunlight. This will cause the temperature inside the product to rise possibly leading
to the product failing to work properly and in extreme conditions could lead to a fire.
12) Do not insert any metal objects into the machine through the ventilator fan or other part of the casing, it could make
contact with a high voltage conductor inside the machine and cause an electric shock.
13) When replacing the SMPS board, please wait 5 minutes after unplugging the power cord, then replace it. You
can get a shock by the electric discharge.

1. Precautions
1.2.3. Handling precautions
The following instructions are for your own personal safety to avoid injury and so as not to damage the product.
1) Ensure the product is installed on a level surface, capable of supporting its weight. Failure to do so could cause
the product to tip or fall.
2) The product contains many rollers, gears and fans. Take great care to ensure that you do not catch your fingers, hair or
clothing in any of these rotating devices.
3) Do not place any small metal objects, containers of water, chemicals or other liquids close to the product which if spilled
could get into the machine and cause damage or a shock or fire hazard.
4) Do not install the machine in areas with high dust or moisture levels, beside on open window or close to a humidifier or
heater. Damage could be caused to the product in such areas.
5) Do not place candles, burning cigarettes, etc on the product, These could cause a fire.
6) Ensure that the machine is installed and used in proper area to meet the temperature and humidity specifications.
• If the machine is stored at below zero Celsius for a long time, do not use the machine instantly after movement. It
can malfunction. Take care of the machine storage. If the machine is stored at below zero Celsius for a long time,
keep the machine at room temperature and install it.
1.2.4. Assembly and Disassembly precautions
1) Replace parts carefully and always use Samsung parts. Take care to note the exact location of parts and also cable
routing before dismantling any part of the machine. Ensure all parts and cables are replaced correctly. Please carry out
the following procedures before dismantling the product or replacing any parts.
2) Ensure that power is disconnected before servicing or replacing any electrical parts.
3) Disconnect interface cables and power cables.
4) Only use approved spare parts. Ensure that part number, product name, any voltage, current or temperature rating
are correct.
5) When removing or re-fitting any parts do not use excessive force, especially when fitting screws into plastic.
6) Take care not to drop any small parts into the machine.
7) Handling of the OPC Drum
• The OPC Drum can be irreparably damaged if it exposed to light. Take care not to expose the OPC Drum either
to direct sunlight or to fluorescent or incandescent room lighting. Exposure for as little as 5 minutes can damage
the surface of the photoconductive properties and will result in print quality degradation. Take extra care when
servicing the product. Remove the OPC Drum and store it in a black bag or other lightproof container. Take
care when working with the Covers (especially the top cover) open as light is admitted to the OPC area and can
damage the OPC Drum.
• Take care not to scratch the green surface of OPC Drum Unit. If the green surface of the Drum Cartridge is
scratched or touched the print quality will be compromised.

1. Precautions
1.2.5. Disregarding this warning may cause bodily injury
1) Be careful with the high temperature part.

The fuser unit works at a high temperature. Use caution when working on the printer. Wait for the fuser unit to
cool down before disassembly.
2) Do not put fingers or hair into the rotating parts.

When operating a printer, do not put hand or hair into the rotating parts (Paper feeding entrance, motor, fan, etc.).
If do, you can get harm.
3) When you move the printer, use safe lifting and handling techniques.
This printer is heavy. Use the lifting handles located on each side of the machine. Back injury could be caused if
you do not lift carefully.
4) Ensure the printer is installed safely.

Ensure the printer is installed on a level surface, capable of supporting its weight. Failure to do so could cause the
printer to tip or fall possibly causing personal injury or damaging the printer.
5) Do not install the printer on a sloping or unstable surface. After installation, double check that the printer is stable.

1. Precautions
1.3. ESD precautions
Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called
“Electrostatically Sensitive (ES) Devices” or ESDs. Examples of typical ESDs are: integrated circuits, some field effect
transistors, and semiconductor “chip” components. The techniques outlined below should be followed to help reduce the
incidence of component damage caused by static electricity.
CAUTION
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
1) Immediately before handling a semiconductor component or semiconductor-equipped assembly, drain off any
electrostatic charge on your body by touching a known earth ground. Alternatively, employ a commercially available
wrist strap device, which should be removed for your personal safety reasons prior to applying power to the unit
under test.
2) After removing an electrical assembly equipped with ESDs, place the assembly on a conductive surface, such as
aluminum or copper foil, or conductive foam, to prevent electrostatic charge buildup in the vicinity of the assembly.
3) Use only a grounded tip soldering iron to solder or desolder ESDs.
4) Use only an “anti-static” solder removal device. Some solder removal devices not classified as “anti-static” can
generate electrical charges sufficient to damage ESDs.
5) Do not use Freon-propelled chemicals. When sprayed, these can generate electrical charges sufficient to damage ESDs.
6) Do not remove a replacement ESD from its protective packaging until immediately before installing it. Most
replacement ESDs are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable
conductive material.
7) Immediately before removing the protective shorting material from the leads of a replacement ESD, touch the protective
material to the chassis or circuit assembly into which the device will be installed.
8) Maintain continuous electrical contact between the ESD and the assembly into which it will be installed, until
completely plugged or soldered into the circuit.
9) Minimize bodily motions when handling unpackaged replacement ESDs. Normal motions, such as the brushing together
of clothing fabric and lifting one’s foot from a carpeted floor, can generate static electricity sufficient to damage an ESD.

2.1. Product Overview
• Printing Speed
• K7600 series
- Up to 60 ppm in A4/Letter
(Up to 31 ppm in A3)
• K7500 series
• K7400 series
• Processor
• Quad Core 1.5GHz
• Memory
• 6GB (2GB for Android OS)
• Document Feeder
• DSDF-H Model : K7600GX / K7500GX / K7400GX
• DSDF-L Model : K7600LX / K7500LX / K7400LX
• LCD
• 10.1 inch Touch Color LCD

2.2. Specifications
Product Specifications are subject to change without notice.
NOTE
The specification in this manual is the reference information for service engineer. Do not use this specification for sales.
2.2.1. General Specification
Item Specification
Processor CPU 1.5 GHz (Quad Core)
Operational Panel 10.1" Color Touch-Panel LCD
User Interface LED 2 ea (Power / Status)
Key / Button 1 ea (Power)
Total (with 6 GB
Android OS)
Standard (without 4 GB
Memory
Android OS)
Expansion N/A
(Optional)
Storage Standard 320 GB HDD
USB (Device) Yes (Hi-Speed USB 3.0, 2.0)
USB (Host) Yes (Hi-Speed USB 3.0, 2.0)
USB (EDI) N/A
Wired LAN Std (Ethernet 10/100/1G Base TX)
Interface
Additional Wired Yes (Optional)
LAN Support
Wireless LAN / • Optional (IEEE 802.11b/g/n + NFC Active Type)
NFC • Optional (IEEE 802.11b/g/n/ac + BLE + NFC Active Type)
from Power off 23 sec
Warmup Time (power on to ready)
from sleep 12 sec
Ready Less than 30W
Normal operation Less than 900W
Max/Peak Max 1300W
Power Sleep/Low Power Less than 2.0W
Consumption Mode
TEC • K7600 series : 3.1 KWh
(Default mode) • K7500 series : 2.717 KWh
• K7400 series : 2.1 KWh
• Input Voltage (Europe): AC 220 - 240 V (-10 % - 6 %)
• Input Voltage (USA): AC 110 - 127 V (-10 % - 6 %)
Power Requirement
• Input Voltage (Korea): AC 220 - 240 V (-10 % - 6 %)
• Rated Frequency: 50 / 60 Hz

Item Specification
Printing mode • Simplex
• K7600 series
- Tray 1: Less than 56 dB (A)
- Multi-purpose tray/Optional trays: Less than 58 dB (A)
• K7500 / K7400 series
• Duplex
• K7600 series
• K7500 / K7400 series
Acoustic Noise Copying mode • Simplex

Level • K7600 / K7500 series
(Sound Power / - Tray 1: Less than 59 dB (A)
Pressure) - Multi-purpose tray/Optional trays: Less than 61 dB (A)
• K7400 series
• Duplex
• K7600 series
• K7500 series
• K7400 series
Ready mode Less than 30 dB (A)
• K7600GX / K7500GX / K7400GX
• 585 x 670 x 932.2 mm (23 x 26.4 x 36.7 inches)
Dimension Set (without stand)
• K7600LX / K7500LX / K7400LX
• 585 x 670 x 883.7 mm (23 x 26.4 x 34.8 inches)
• K7600GX / K7500GX / K7400GX : 97.3 Kg (214.5 lbs)
Weight Set (with supplies)
• K7600LX / K7500LX / K7400LX : 84.3 Kg (185.8 lbs)
• K7600 series : 30,000 pages
Recommended AMPV • K7500 series : 25,000 pages
Max Monthly Duty Cycle • K7500 series : 250,000 pages

2.2.2. Print Specifications
Item Specification
• K7600 series
• Up to 60 ppm in A4 (60 ppm in Letter)
• Up to 31 ppm in A3 (31 ppm in 11X17)
• K7500 series
Simplex • Up to 50 ppm in A4 (50 ppm in Letter)
• K7400 series
• Up to 40 ppm in A4 (40 ppm in Letter)
Print Speed
• K7600 series
• Up to 60 ipm in A4 (60 ipm in Letter)
• Up to 31 ipm in A3 (31 ipm in 11X17)
Duplex • K7500 series
(Simplex to • Up to 50 ipm in A4 (50 ipm in Letter)
Duplex) • Up to 26 ipm in A3 (26 ipm in 11X17)
• K7400 series
• Up to 40 ipm in A4 (40 ipm in Letter)
• Up to 21 ipm in A3 (21 ipm in 11X17)
• K7600 series : (as fast as) 6.9 sec
From Ready • K7500 series : (as fast as) 7.5 sec
FPOT
From Sleep • K7500 series : (as fast as) 19.5 sec
Resolution 1200 x 1200 dpi (Full Speed)
Printer Languages PCL5 / PCL6(XL) / PostScript Level 3 / PDF V1.7
PCL 95 Scalable Fonts (Include OCR-A / OCR-B) / 1 Bitmap
Font
Postscript3 136 Scalable Fonts
XP (32 / 64 bit) / 2003 Server (32 / 64 bit) / Vista (32 / 64 bit) / 2008 server (32 /
64 bit) / Windows 7 (32 / 64 bit) / 2008 Server R2 (64 bit) / Windows 8 (32 / 64
Windows
bit) / Windows 8.1 (32 / 64 bit) / Windows Server 2012 (64 bit) / Windows Server
2012 R2 (64 bit)
• RedHat Enterprise Linux WS 5, 6 (32/64bit)
Printer Driver • Fedora 12, 13 ,14,15,16,17,18,19,20(32/64bit)
Supporting OS • OpenSuSE 11.2, 11.3, 11.4, 12.1, 12.2,12.3,13.1 (32/64bit)
Linux • Ubuntu 10.04, 11.04, 11.10, 12.04, 12.10,13.04,13.10,14.04 (32/64bit)
• SuSE Linux Enterprise Desktop 10, 11 (32/64bit)
• Debian 6, 7 (32/64bit)
• Mint 13, 14, 15, 16 (32/64bit)
Mac OS Mac OS X 10.6 ~ 10.10

Item Specification
Direct Print PRN / PDF / TIFF / JPEG / XPS
WSD print / Secure print / Stored print / Booklet / N-up / Cover page / Barcode /
Print Features Eco / Poster / Glossy / Watermark / Tray Priority setting / Auto tray setting / Tray
Protection / USB print / Secure PDF print / Google Cloud print

2.2.3. Scan specification
Item Specification
• K7600GX / K7500GX / K7400GX
• Simplex : Up to 120 ipm (@ 300 x 300 dpi)
• Duplex : Up to 240 ipm (@ 300 x 300 dpi)
Scan Speed
• K7600LX / K7500LX / K7400LX
• Simplex : Up to 80 ipm (@ 300 x 300 dpi)
• Duplex : Up to 160 ipm (@ 300 x 300 dpi)
Color Mode Mono / Gray / Color
Compatibility Network TWAIN / Network SANE
Scan method MMT
PDF / Searchable PDF / Compact PDF/ PDF Encryption / Digital Signature in
File Formats PDF / PDF/A / Single-Page-PDF / Multi-Page-PDF / TIFF / Single-Page-TIFF /
Multi-Page-TIFF / XPS / Single-Page-XPS / Multi-Page-XPS / JPEG
Optical (ADF) Up to 600 x 600 dpi
Optical (Platen) Up to 600 x 600 dpi
Resolution
Enhanced (ADF) Up to 4,800 x 4,800 dpi
Enhanced (Platen) Up to 4,800 x 4,800 dpi
Scan Destinations Email / FTP / SMB / HDD / USB / WSD / PC / Internet FAX
Multi Destinations Yes
Communication Protocol SMTP(IPv4, IPv6, SSL/TLS) / POP3(IPv4, IPv6, SSL/TLS) / FTP(IPv4, IPv6) /
SMB(IPv4, IPv6) / WSD / T4Net
• K7600GX / K7500GX / K7400GX
• Min. A6 SEF(105 X 148mm)
ADF • Max. 297 x 437 mm (11.7" x 17.2")
Scan Size
• K7600LX / K7500LX / K7400LX
• Max. 297 x 437 mm (11.7" x 17.2")
Platen Max. 297 x 437 mm (11.7" x 17.2")
Scan Original Types Text / Text & Photo / Photo

2.2.4. Copy specification
Item Specification
SDMC (Single • K7600 series : Up to 60 cpm in A4

Document • K7500 series : Up to 50 cpm in A4
Multiple Copy) • K7400 series : Up to 40 cpm in A4
• K7600 series
• Simplex to Simplex : Up to 60 cpm in A4/Letter
Copy Speed • Duplex to Simplex : Up to 60 ipm in A4/Letter
(DSDF) MDMC (Multiple • K7500 series
Document • Simplex to Simplex : Up to 50 cpm in A4/Letter
Multiple Copy) • Duplex to Simplex : Up to 50 ipm in A4/Letter
• K7400 series
• Simplex to Simplex : Up to 40 cpm in A4/Letter
• Duplex to Simplex : Up to 40 ipm in A4/Letter
• K7600 series : 3.1 sec
FCOT From Ready • K7500 series : 3.7 sec
• K7400 series : 4.6 sec
ADF (DSDF) • Scan: 600 x 600 dpi
• Printing: 600 x 600 dpi
Resolution
Platen • Scan: 600 x 600 dpi
• Printing: 600 x 600 dpi
ADF (DSDF) 25% ~ 400% in 1% increments
Platen 25% ~ 400% in 1% increments
25%
50%, A3→A5
61%, A3→B5
64% Ledger→Letter
70%, A3→A4 | B4→B5 | A4→A5
77%, Ledger→Legal
78%, Legal→Letter
81%, B4→A4 | B5→A5
Reduce & Enlarge
86%, A3→B4 | A4→B5
Preset
104%, Executive→Letter
115%, B4→A3
121%, Legal→Ledger
122%, A4→B4
129%, Letter→Ledger
141%, A4→A3 | A5→A4
150%
200%, A5→A3
400%
Darkness Control 11 Levels
Contrast Control 11 Levels
Multi Copy 1 - 9,999

Item Specification
Duplex Copy Built-in
Copy Original Type Text / Text & Printed Photo / Text & Glossy Photo / Newspaper / Printed Photo /
Glossy Photo / Copied Original / Map / Light Original
Copy Features ID Copy / N-up / Booklet / Image Repeat / Auto Fit / Book Copy / Poster Copy /
Watermark / Image Overlay / Stamp / Covers / Job Build / Preview / Erase Edge /
Image Shift / Image Adjustment / Background Adjustment
2.2.5. Fax specification
Item Specification
Compatibility ITU-T G3 / Super G3
Communication System PSTN/PABX
Modem Speed 33.6 Kbps
TX Speed 3sec/1page ( based on ITU-T No. 1 chart )
Standard 1 sec / LTR
Scan speed Fine 1 sec / LTR
S.Fine 1 sec / LTR
Std 203 x 98 dpi
Fine 203 x 196 dpi
Resolution (Mono)
S.Fine 300 x 300 dpi
Ultra Fine 600 x 600 dpi
Std N/A
Resolution (Color) Fine N/A
S.Fine N/A
Compression Method MH / MR / MMR / JBIG
Fax Memory (Standard / Max.) N/A
Dual Lines Option
Handset N/A
On hook Dial Yes
Search Yes (Address Book)
1-Touch Dial N/A
Speed Dial 500 locations
TAD I/F Yes(First Line)
Fax Features Tone/Pulse Yes (Selectable in Tech Mode)
Pause Yes
Auto Redial Yes
Last Number Yes
Redial
Distinctive Ring No
Caller ID Yes

Item Specification
External Phone Yes(First Line)
Interface
Fax Forward to Yes
E-Mail
Fax to PC N/A
Broadcasting Yes
Delayed Fax Yes
Color Fax N/A
Tx/Rx Journal Yes
Report & List Print Confirmation 2 Types Available (With Image TCR / Without Image TCR)
out Auto Dial List N/A
System Data List N/A

2.2.6. Paper Handling specification
Item Specification
Standard 1,040 sheets
Multipurpose 100 sheets
Maximum 6140 sheets
Input Capacity
NOTE
MP(100) + 2 Tray(1.040) + HCF bottom(2,000)+ HCF side(3,000)
• 520 sheets x 2 (Based on Xerox Premier 80g/m²)

• Envelope : 50 sheets (only Tray1 support)
Capacity
NOTE
Support Envelope : Monarch, DL, C4, C5, C6, No10 No9

Standard Cassette
Tray • Cassette 1: 98 x 139.7 mm ~ 297 x 390 mm (3.9" x 5.5" ~ 11.7" x 15.4")
Media sizes
• Cassette 2: 148.5 x 182 mm ~ 320 x 457 mm (5.8" x 7.2" ~ 12.6" x 18")
Plain / Thin / Bond / Hole Punched / Pre-Printed / Recycled / Thin CardStock / Thick
CardStock / Heavy Cardstock/Heavy Cardstock/Extra Heavy Cardstock 1/Letterhead
Media types / Thick / Cotton / Colored / Archive / Thin Glossy / Thick Glossy/Heavy Glossy /
Heavy weight / Extra Heavy weight1,2,3,4/ Label/ Transparency/ Envelope(Casette1
Only)

Item Specification
• Plain Paper: 70-90 g/m² (18.5-24 lb/ Duplex)
• Thick Paper: 91-105 g/m² (25-28 lb / Duplex)
• Heavy Weight Paper : 106-176 g/m² (Duplex)
• Extra Heavy Weight 1 Paper : 177-220 g/m²
• Extra Heavy Weight2 : 221~256g/m²(Duplex)
• Extra Heavy Weight3 : 257~300g/m²
• Thick Cardstock : 164~216g/m² (Duplex)
• Heavy Cardstock : 217~256g/m²(Duplex)
• Extra Heavy Cardstock1 : 257~300g/m²
• Thick Glossy : 164~216g/m²
• Heavy Glossy : 217~256g/m²
• Trasnparency : 138~146g/m²
Media weight • Label : 120~150g/m²
• Envelope : 75~90g/m²(Only Tray1 Support)
• Thick Envelope : 91~120g/m²(Only Tray1 Support)
• Thin Paper: 60-69 g/m² (16-19 lb/ Duplex)
• Cotton paper : 75-90 g/m² (Duplex)
• Colored : 75-90 g/m² (Duplex)
• Pre-Printed : 71-90 g/m² (Duplex)
• Recycled : 60-90 g/m² (Duplex)
• Bond Paper: 105-120 g/m² (Duplex)
• Letterhead : 75-90 g/m² (Duplex)
• Hole Punched Paper: 75-90 g/m² (Duplex)
• Thin CardStock : 105-163 g/m² (Duplex)
• Thin Glossy : 106-163 g/m² (Duplex)
• H/W Install Detect: Yes
• Paper Empty & Low Level Detect: Yes
Sensing
• Paper Type Detect: No
• Paper Size Detect: Yes
• Plain Paper: 100 sheets @ 80 g/m²
• Envelopes: 10 sheets @ 75 g/m²
NOTE
Capacity
Support Envelope : Monarch, DL, C4, C5, C6, No10 No9
• Labels: 20 sheets @ 120~159 g/m²

• Thick Paper: 10 sheets @ 176 g/m²
Multipurpose Tray
Media sizes 98 x 139.7 mm ~ 320 x 1200 mm (3.8" x 5.5" ~ 12.6" x 47.2")
Plain / Thin / Bond / Hole Punched / Pre-Printed / Recycled / Thin CardStock /
Media types Letterhead / Thick / Cotton / Colored / Archive / Thin Glossy / Thick Glossy / Heavy
Glossy / Heavy weight / Extra Heavy weight1,2,3,4 / Envelope / Transparency / Label
• 60 to 256g/m² : Simplex, Duplex
• 257 to 325g/m² : Simplex
Media weight
• Envelope : 75~90g/m² , Simplex
• Label : 120~150g/m² , Simplex

Item Specification
• Paper Empty Detect: Yes
Sensing
Capacity 100 sheets
• Width: 128 - 297 mm (5" - 11.7")
Document Size
• Length: 140 - 432 mm (5.5" - 17")
DSDF (LX model)
• Simplex : 42 - 163 g/m² (11.25 ~ 43.25 lb)
Document Weight
• Duplex : 50 - 163 g/m² (13.25 ~ 43.25 lb)
Auto Detected Size A3 / A4 / A5 / B4/ B5/ Letter / Lgeal / Statement / Folio / Executive
Capacity 250 sheets
• Width: 105 - 297 mm (4.13" - 11.7")
Document Size
• Length: 140 - 432 mm (5.5" - 17")
DSDF (GX model) • Simplex : 60 - 163 g/m² (11.25 ~ 43.25 lb)(Guarantee) 42~60 &
163~220g/m² (Support)
Document Weight
• Duplex : 60 - 163 g/m² (13.25 ~ 43.25 lb)(Guarantee) 50~60 & 163~220g/m²
(Support)
Auto Detected Size A3 / A4 / A5 / A6 SEF / B4/ B5/ Letter / Lgeal / Statement / Folio / Executive
Document Size • Width: 140 - 297 mm (5.5" - 11.7")
Platen Unit
• Length: 140 - 432 mm (5.5" - 17")
Standard 500 sheets Face Down
Output Capacity
Maximum 615 sheets [ 500 sheets (Standard) + 125 sheets (Job Separator) ]
Max. Size 320 x 457 mm (12.6" x 18")
Printing size
Min. Size 98 x 139.7 mm (3.8" x 5.5")
Max. Printing Simplex Top: 4.2+/-1.5 mm / Left: 4.2+/-1.5mm

Area Duplex Top: 4.2+/-2.0 mm / Left: 4.2+/-2.0mm
Support Built-in
Media sizes 139.7 x 182 mm ~ 320 x 457 mm (5.5" x 7.2" ~ 12.6" x 18")
Duplex Printing Media types Plain / Thin / Bond / Hole Punched / Pre-Printed / Recycled / Thin CardStock /
Letterhead / Thick / Cotton / Colored / Archive / Thin Glossy / Thick Glossy / Heavy
Glossy / Heavy weight / Extra Heavy weight1,2
Media weight 16~47 lb (60 to 256 g/m²)

2.2.7. Network and Software specification
Network Interface
Item Specifications
[Windows]
• Microsoft Windows XP(32/64bits) / 2003(32/64bits) /
Vista(32/64bits) / Win7 / Win8
[Mac]
• Mac OS 10.5 ~ 10.8
[Linux]
• RedHat 8 ~ 9
Network OS
• Fedora Core 1~4
• Madrake 9.2 ~ 10.1
• SuSE 8.2 ~ 9.2
[Novell]
• Netware 5.x, 6.x(TCP/IP Only)
[Others]
• Unix (HP-UX, Solaris, SunOS, SCO)
TCP/IPv4, HTTP, SNMPv1/v2c/v3, LDAP, SMTP, SSL/TLS, IPSec,
TCP/IP
DNS,WINS, SLP, Bonjour, SSDP,DDNS, DHCP/BOOTP,IPv6
IPX/SPX No
NW Protocols
Ether Talk No
NetBIOS over TCP/IP Yes
Others HTTPS, IPSec, 802.1x
Static IP Yes
Auto IP Yes
IP Addressing
BOOTP Yes
DHCP Yes
MIB-2(RFC 1213) Yes
Host Resource MIB (RFC Yes
2790)
Printer MIB (RFC 3805) Yes
SNMP/MIB Access
Finisher MIB (RFC 3806) Yes
Samsung Private MIB Yes
HP Compatibility Yes - Patially
SNMP Trap Yes
Window Printing (SMB) No
LPR/LPD Yes
IPP Yes
Printing Protocols Netware I-Print No
Netware NDPS No
Ether Talk No
Port 9100 Yes

Item Specifications
DNS Yes
Dynamic DNS Yes
Multicast DNS(Bonjoure) Yes
Device Discovery
WSD (incl. Print & Scan) Yes (Print & Scan)
SLP Yes
uPNP(SSDP) Yes
Software and Solution

Item Specifications
Anyweb Print N/A
Easy Printer Manager Windows / Mac
Easy Color Manager Windows / Mac
Easy Document Creator Windows
Net PC Fax Windows / Mac
Application Direct Printing Utility Windows
Easy Deployment Windows
Manager
Easy Eco Driver Windows
Universal Printer Driver Windows
Universal Scan Driver Windows
GCP (Google Cloud Print) Yes
Mobile Printing
AirPrint Yes
Smart Workspace Yes
Workbook Composer Yes
Smart App Smart Color Manager Yes
Smart Service App Yes
Hancom Office Yes
Device Management Fleet Admin Pro (UniThru)
Output Management CounThru Enterprise / Pro
Document Management SmarThru Workflow 3.0
Solution
and Distribution
Security SecuThru Pro 1.0
Mobility SCP 1.0 ('14.09)

Item Specifications
Authentication (Local) Yes
Authentication (Network) Yes (SMB / Kerberos / LDAP / IPSec / EAP)
IP Address Filtering Yes (IPv4 Filtering / IPv6 Filtering / MAC Filtering)
HDD Overwrite Yes
(Standard)
HDD Overwrite (Max. 9
Overwrites)
Security
Secure Print Yes
Encrypted Secure Print Yes
Encrypted PDF Mode Yes
(Encrypted Scanning)
IP Sec Yes
Smart Card Yes
Authentication

2.2.8. Supplies
Item Model Name Average yield Conditions for yield

(Initial) -
NOTE @ A4/Letter LEF , Continuous job ,

Approx. 30,000 pages
Simplex Mode , 6% Coverage
Toner Cartridge Only
China,
Korea
MLT-K706S @ A4/Letter LEF , Continuous job ,

(Standard) Approx. 45,000 pages
Simplex Mode , 6% Coverage
MLT-R706 @ A4/Letter LEF , 4 pages/job , Simplex
OPC Drum Unit Approx. 450,000 pages
Mode , 6% Coverage
MLT-W706 @ A4/Letter LEF , 4 pages/job , Simplex
Waste Toner Container Approx. 300,000 pages
Mode , 5% Coverage
NOTE
• Depending on the print pattern and job mode used, the consumable’s lifespan may differ.

2.2.9. Maintenance Parts
Some of the machine’s parts have shorter life span than machine’s life.
To ensure that the machine produces good copies and to extend its service life, it is recommended that these maintenance
parts at specific intervals be replaced as instructed.
Item Part Code Life Remark

JC96-09829A @ A4/Letter LEF , 4
Development Unit 1,200,000 pages pages/job , Simplex
Mode , 6% Coverage
JC91-01194A 220V
Fuser Unit 360,000 pages
JC91-01195A 110V
PTB (Paper Transfer Belt) JC93-01117A 300,000 pages
Pick-Up / Forward / Reverse(Separation) JC93-01092A
roller 360,000 pages
(for Tray X)
MP Pick-Up / Forward / Reverse(Separation) JC93-00540B
200,000 pages
roller
DSDF Pick-Up roller Assy JC97-04624A 200,000 pages For LX model
DSDF Reverse(Separation) roller Assy JC97-04588A 100,000 pages For LX model
DSDF Pick-Up roller Assy JC97-04650A 200,000 pages For GX model
DSDF Reverse(Separation) roller Assy JC97-04915A 100,000 pages For Gx model
NOTE
• Depending on the print patterns and job mode used, the lifespan may differ.
• Refer to Chapter 3.2.2 for replacing the maintenance parts.
Maintenance Table
• EM : Emergency Maintenance (as Needed)
• C : Clean
• R : Replace
NOTE
The period as shown in the table means lifespan for each maintenance parts.
Section Item EM 45K 50K 100K 200K 300K 360K 450K 1200K
Waste Toner Container C R
Waste Toner Around Waste Toner C
Container
Toner Cartridge C R
Drum Unit C R
Imaging Unit Development Unit C R
Around Toner Pipe C
Paper Dust Stick C

Section Item EM 45K 50K 100K 200K 300K 360K 450K 1200K
Fuser Unit Fuser Unit C R
Transfer Unit PTB (Paper Transfer C R
Belt)
Pick-Up / Forward / C
Reverse(Separation)
roller * R
(for Tray X)
Paper Path MP Pick-Up / Forward C R
/ Reverse(Separation)
roller *
Regi / Feed / Duplex C
roller
DSDF Pick-Up roller C R
Assy
DSDF C R
DSDF Reverse(Separation)
roller Assy
White sheet / White C
sponge / Feed roller
* Replace those three parts at the same time.

2.2.10. Option
Option Configuration

Option List
Item Model Remark
Cabinet Stand SL-DSK501T
Double(Dual) Cassette Feeder SL-PFP501D
High Capacity Feeder - Under(Bottom) SL-HCF501B
High Capacity Feeder - Side
SL-HCF501S
(LCT : Large Capacity Tray)
Working Table CLX-WKT001
Multi Purpose Table SL-WKT101
Fax Kit CLX-FAX160
Fax Multiline Kit SL-FAX2501
FDI(Foreign Device Interface)Kit CLX-KIT10F
Job Separator SL-JST501S
Cassette Locking Kit SL-CLK501
CLX-DHK11C For DCF
CLX-DHK12C For DCF
Dehumidifying Heater Kit
SL-DHK511C For HCF/LCT
SL-DHK512C For HCF/LCT
Wireless / NFC Kit SL-NWE001X
Wireless / NFC / BLE Kit SL-NWE002X
Additional Network Kit
SL-NWA001N
(Dual Network Kit)
550-Sheet Inner Finisher SL-FIN502L
3,250-Sheet Stapling Finisher
SL-FIN701H
(High Volume Finisher)
2,250-sheet Booklet Finisher SL-FIN701B
2 and 3 hole punch (For America & Asia &
SL-HPU501T
Africa)
Punch Kit for 500- sheet Inner Finisher
SL-HPU501F 2 and 4 hole ( For Europe)
SL-HPU501S Swedish 4 hole (For Sweden)
2 and 3 hole punch (For America & Asia &
SL-HPU701T
Africa)
Punch Kit for 3,250- sheet Finisher
SL-HPU701F 2 and 4 hole ( For Europe)
SL-HPU701S Swedish 4 hole (For Sweden)
Staples • Regular staples for Inner Finisher
• SCX-STP000
• Saddle staples for Booklet Finisher
NOTE
Regular staples for High Volume and Booklet
FIN701B has 2 staple slots. SL-STP000
Finisher

Option Specification
Item Specification
Model Name SL-PFP501D
Capacity 520 x 2 Sheets
• Cassette 1 : 148.5 x 210 mm ~ 297 x 432 mm (5.8" x 8.2" ~ 12" x 18")
Media Sizes
• Cassette 2 : 148.5 x 210 mm ~ 297 x 432 mm (5.8" x 8.2" ~ 12" x 18")
Plain / Thin / Bond / Hole Punched / Pre-Printed / Recycled / Thin CardStock /
Media types Letterhead / Thick / Cotton / Colored / Archive / Thin Glossy/ Heavy weight/ Extra
heavy weight
• Plain Paper: 71-90 g/m²(18.5-24 lb/ Duplex)
• Thick Paper: 91-105 g/m²(25-28 lb / Duplex)
• Heavy Weight Paper : 106-176 g/m²(Duplex)
• Extra Heavy Weight 1 Paper : 177-216 g/m² (Duplex)
• Extra Heavy Weight 2 Paper : 217-256 g/m² (Duplex)
• Extra Heavy Weight 3 Paper : 257-300 g/m²
• Thin Paper: 60-69 g/m² (16-19 lb/ Duplex)
Dual Cassette • Cotton paper : 75-90 g/m² (Duplex)
Feeder Media weight
• Colored : 75-90 g/m² (Duplex)
• Pre-Printed : 71-90 g/m² (Duplex)
• Recycled : 60-90 g/m² (Duplex)
• Bond Paper: 105-120 g/m² (Duplex)
• Letterhead : 75-90 g/m² (Duplex)
• Hole Punched Paper: 75-90 g/m² (Duplex)
• Thin CardStock : 105-163 g/m² (Duplex)
• Thin Glossy : 106-163 g/m² (Duplex)
• H/W Install Detect: Yes
• Paper Empty & Low Level Detect: Yes
Sensing
• Paper Type Detect: No
Dimension 566 x 610 x 265 mm (22.3" x 24" x 10")
Weight Net 20 kg, Packing 23.5 kg
Model Name SL-HCF501B
Capacity 2000 sheets @ 20lb (80 g/m²)
Media sizes A4,Letter
High-Capacity Media types Plain Paper, Thin Paper, Thick Paper, Punched Paper
Feeder - Bottom Media weight 60 to 300gsm
(2k)
• H/W Install Detect : Yes
• Paper Empty & Low Level Detect : Yes
Sensing
• Paper Type Detect : No
• Paper Size Detect : No

Item Specification
Model Name SL-HCF501S
Capacity 3000 sheets @ 20lb (80 g/m²)
Media sizes A4,Letter
Media types Plain Paper, Thin Paper, Thick Paper, Punched Paper
High-Capacity
Feeder - Side (3K) Media weight 60 to 300gsm
• H/W Install Detect : Yes
• Paper Empty & Low Level Detect : Yes
Sensing
• Paper Type Detect : No
• Paper Size Detect: No
Model Name SL-DSK501T
Stand Dimension 585 x 670 x 257 mm
Weight (Net) 18 kg
Model Name SL-JST501S
Job Separator
Capacity 125 sheets @ (80g/m²)
Model Name SL-FIN502L
Capacity 500 sheets stacking, internal
Staple Cartridge 5000 staples / cartridge
capacity
Stacking • Top Tray : 50 sheets (A4/LT @ 80gsm)
• Finishing Tray : 500 sheets (A4/LT @ 80gsm)
Stapling • Max. Number of Sheets : 50 sheets stapling with 90g/m² sheet
Inner Finisher
• Stapling Positions : Front flat & corner(45) / Dual / Rear flat & corner(45)
Saddle Stapling N/A
Offline Stapling N/A
Offset at Non Yes
Staple job
Offset at Staple job N/A
Output Stacking Face Down
Model Name SL-FIN701H
Capacity 65 sheets stapling / 3250 sheets stacking
capacity
3250-sheet
Stapling • Max. Number of Sheets : 65 sheets stapling with 90g/m² sheet
Finisher
• Stapling Positions : 2 Corners (Single, 45 degree), Center (Double)
Offline Stapling Yes
Offset at Non Yes
Staple job
Offset at Staple job Yes

Item Specification
Model Name SL-FIN701B
Capacity 65 sheets stapling / 2000 sheets stacking
capacity
2250-sheet Stapling • Max. Number of Sheets : 65 sheets stapling with 90 g/m² sheet
Booklet Finisher • Stapling Positions : 2 Corners (Single), Center (Double)
Saddle Stapling • Max. Number of Sheets : 25 sheets stapling with 80 g/m² sheet
Offline Stapling Yes
Offset at Non Yes
Staple job
Offset at Staple job Yes
Model Name SL-HPU701T/SL-HPU701F/SL-HPU701/S
Punch Kit Available Unit Auto change 2/3 hole or auto change 2/4 hole, Swedish 4
Paper weight 52~300 g/m²
Model Name SL-HPU501T/SL-HPU501F/SL-HPU501S
Punch Kit (Inner) Available Unit Auto change 2/3 hole or auto change 2/4 hole, Swedish 4
Paper weight 52~256 g/m²
Model Name CLX-WKT001
Dimension 153 x 124 x 39.7 mm (6 x 4.9 x 1.6 inch)
Working Table
(WxDxH)
Weight 82 g (0.18 lb)
Model Name SL-WKT101
Dimension 282 x 468 x 99 mm (11.1 x 18.4 x 3.9 inch)
Working Table
(WxDxH)
Weight 828 g (1.825 lb)

2.3. Machine External View
1) Front view 1
1 ADF(Auto Document Feeder) cover

2 ADF width guides
3 ADF input tray
4 ADF output tray
5 Control panel
6 Multi-purpose tray
7 Power-switch
8 Power receptacle
9 Tray2
10 Tray 1(Top tray)
11 Front door
12 Paper output tray

2) Front view 2
1 Scanner glass
2 White sheet
3 Multi-purpose tray paper width guide
4 Multi-purpose tray
5 USB keyboard port
6 USB port

Rear view
1 Output support tray

2 Control board cover
3 USB port
4 USB printer port
5 Network port
6 EFI (Optional) cover
7 FDI (Optional) cover
8 Fax1 (Optional) port cover

9 Fax2 (Optional) port cover

Inner view
1 Waste toner container

2 Toner Cartridges
3 Imaging units

2.4. Feeding System
2.4.1. Feeding System Overview
The feeding system picks up a paper from the cassette or MP tray and transports it to the machine inside. After printing
process, the paper is put out on the exit tray. The feeding system mainly consists of the pick up unit, registration unit,
transfer Assy, Exit unit.

2.4.2. Main Components and functions
a) Rollers
1 Tray 1 Paper tray 9 MP Tray pick up / reverse / forward rollers

2 Tray 2 Paper tray 10 Tray 1 feed roller
3 Tray 3 Paper tray(Option) 11 Tray 2 feed roller
4 Tray 4 Paper tray(Option) 12 Tray 2 trans roller
5 Tray 1 pick up / reverse / forward rollers 13 Tray 3 feed roller (Option)
6 Tray 2 pick up / reverse / forward rollers 14 Tray 3 trans roller (Option)
7 Tray 3 pick up / reverse / forward rollers 15 Tray 4 feed roller (Option)
(Option)
16 Sensor registration
8 Tray 4 pick up / reverse / forward rollers
17 Roller registration
(Option)

18 PTB Unit 22 Roller Duplex1

19 Roller Exit 1st 23 Roller Duplex2
20 Roller Exit 2nd 23 Roller Duplex3
21 Roller Exit trans

• Pick-Up roller (Tray 1,2,3,4 and MP Tray)

- This roller picks up the paper from the tray.
• Forward roller (Tray 1,2,3,4 and MP Tray)
- This roller is placed against the reverse roller. It transports the paper from the pick up roller to feed roller.
• Reverse roller (Tray 1,2,3,4 and MP Tray)
- This roller is placed against the forward roller and transports only one sheet to the feed roller. When two sheets of
paper or more are transported from the pick up roller, the load of the torque limiter of the reverse roller is heavier
than the frictional force between the sheets. As a result, the reverse roller is stopped and the lower paper does
not advance any further.
• Feed roller
- This roller transports the paper sent from the forward/reverse roller to the registration roller.
• Registration roller
- This roller aligns the leading edge of the paper and transports the paper to the transfer roller Assy.
NOTE
[Roller period table]

Roller Periodic
OPC/Drum 188.5 mm
Charge Roller (CR) 37.7 mm
Magnetic roller (MR) 36.9 mm
PTB D/R 66 mm
PTB BELT 161 mm
Fuser Belt (HR) 109.96 mm
Fuser Pressure Roller (PR) 116.24 mm

b) Sensor, Motor, Solenoid
Item Function
Tray1 paper size detection sensor Detects Tray1 paper size
Tray1 paper empty detection sensor Detects Tray1 paper empty
Tray1 upper limit detection sensor Detects Tray1 upper limit
Tray1 paper Lead Edge detection sensor Detects Tray1 paper Lead Edge
Tray2 paper size detection sensor Detects Tray2 paper size
Tray2 paper empty detection sensor Detects Tray2 paper empty
Tray2 upper limit detection sensor Detects Tray2 upper limit
Tray2 paper Lead Edge detection sensor Detects Tray2 paper Lead Edge
Tray2 paper feed jam detection sensor Detects Tray2 paper feed jam
Tray3 paper size detection(Option) sensor Detects Tray3 paper size

Item Function
Tray3 paper empty detection(Option) sensor Detects Tray3 paper empty
Tray3 upper limit detection(Option) sensor Detects Tray3 upper limit
Tray3 paper Lead Edge detection (Option) sensor Detects Tray3 paper Lead Edge
Tray3/4 paper feed jam detection (Option) sensor Detects Tray3/4 paper feed jam
Tray4 paper size detection(Option) sensor Detects Tray4 paper size detection
Tray4 paper empty detection(Option) sensor Detects Tray4 paper empty
Tray4 upper limit detection(Option) sensor Detects Tray4 upper limit
Tray4 paper Lead Edge detection (Option) sensor Detects Tray4 paper Lead Edge
Paper regi. jam detection sensor Detects Paper regi. jam
Paper fuser-out jam detection sensor Detects Paper fuser-out jam
Exit tray1 paper full detection sensor Detects Exit tray1 paper full
Exit2 tray path &Return path solenoid Changes paper path
Return motor Controls 2nd Exit Tray and duplex printing
Exit tray2 paper full detection sensor Detects Exit tray2 paper full
Exit 2 paper return detection sensor Detects Duplex Return position
1st Duplex motor Controls duplex printing
2nd Duplex motor Controls duplex printing
Duplex1 jam detection sensor Detects Duplex1 jam
Duplex2 jam detection sensor Detects Duplex2 jam
MPF Paper empty detection sensor Detects MPF Paper empty
NOTE
If paper is loaded in the MP tray, that tray takes priority over

trays 1,2,3, or 4.
MPF Controls MPF pick up roller

MPF paper width detection sensor Detects MPF paper width
Tray1 Pickup & Lift motor Drives the pickup roller and the knock up plate
Paper Loop sensor Detects paper loop between transfer Nip and fusing Nip
At warm-up, Detects the fuser jam.

2.4.3. Cassette (Tray)
The Cassette stores papers.
Paper size is set using the Size Guides in each tray.
Specification
1) Structure : Drawer Type
2) Capacity : 520 Sheets ( 80 g/m² paper standard)
3) Paper support
• Plain paper : A5, A4, A3(not support in tray1), B5, B4, Letter, 11"×17"(Ledger), Statement, Legal
• Special Paper : Envelope(Tray1 Only), Label, Transparency
4) Paper weight : plain paper 60 ~ 300 g/m²
5) Plate knock up lift type : Lift Motor + Up Limit Sensor

2.4.4. Pick-Up Unit
When pick-up takes place, the pickup roller moves down to come into contact with the surface of the paper. If the cassette is
installed, the LEVER-INPUT CST is pushed and pick up roller moves down. The forward roller and the reverse roller
serve to make sure that a single sheet of paper is moved to the paper path, and the paper is moved as far as the registration
roller by the work of the feed roller.
NOTE
The Pick-Up Unit1 and Pick-Up Unit2 can’t be swapped over.
Pick–Up Unit 1
Pick–Up Unit 2

2.4.5. Registration Unit
The registration(Regi.) roller is driven by the Regi./MP motor. The Regi. clutch is located between the Regi. clutch and
Regi./MP motor, and it controls ON/OFF of the registration roller in order to match paper and an image on the drum at the
predetermined registration point.

2.4.6. MPF(Multi-Purpose Feeder) Unit
The MPF Unit allows feeding of specialty media stock, envelopes, and custom size paper.
■ Specification
1) Capacity : 100 sheets ( 80g/ paper standard)
2) Media Size : 98 x 148 mm ~ 320 x 1200 mm (3.8" x 5.8" ~ 12.6" x 47.2")
3) Media Weight : Plain paper 60 ~ 325 g/m²
4) Feeding Speed : 48 ppm (X7600/K7600) , 40 ppm (X7500/K7500), 32 ppm (X7400/K7400) Letter/A4 LEF (Long
Edge Feeding)
■ Paper Separation
When the MP paper detection[A] sensor detects paper and the machine gets a MP printing job, the MP solenoid[B] drops the
pick-up roller[C] onto the top of the paper stack on the MP tray.
This machine uses an FRR (Feed and Reverse Roller) system for feeding paper. The friction between the reverse roller[D]
and forward roller[E] separates the top sheet of paper from the stack.

2.5. Image Creation
2.5.1. Printing process overview
This machine uses one drum unit, one deve unit, and a laser beam for mono printing. The drum unit consists of a OPC drum,
charge roller, cleaning blade. The deve unit consists of a magnetic roller, mixing auger.
The OPC drum [A] is charged with a negative voltage and is exposed by the light from the LSU (Laser Scanning unit) [B].
The light produced by the laser creates a latent image by discharging on the surface of the OPC drum. The negatively
charged toner is attracted to the latent drum image due to an electric field. The toners (mono image) on OPC drum are
transferred to the paper by a positive bias.
1) OPC drum charge : The charge roller gives the drum a negative charge.
2) Laser exposure : Light produced by a laser diode hits the charged OPC through the lens and mirrors.
3) Development : The magnetic roller carries negatively charged toner to the latent image on the drum surface.
4) Transfer
• Paper transfer : The PTB(Paper Transfer Belt) transfers the toner from the OPC drum to the paper.
5) Cleaning for OPC drum : The cleaning blade removes remaining toner on the drum surface after image transfer
to the paper.
6) Quenching for OPC drum : Quenching is done by illuminating the whole area of the drum with the laser at the end
of every job.

2.5.2. Imaging Unit
2.5.2.1. Drum Unit Overview
This machine has one Drum Unit and one Deve Unit.
The diameter of the drum is 60 mm (circumference: about 188.5 mm).
The drum unit has the charge roller to charge the drum surface and cleaning roller to clean the charge roller.
The CRUM is the sub part of the Drum Unit. It stores the count information and several data. If the Drum Unit is replaced,
the count information stored by the old Drum Unit could not be kept.

2.5.2.2. Drum drive
The OPC drum and Magnetic roller is driven by a BLDC motor. The OPC drum and Magnetic roller are supplied with
power from the coupling.
The driving shaft inserted to OPC drum makes the drum unit fix. It is makes more stable image than previous structure.

2.5.2.3. Deve(Development) Unit
This machine uses a dual-component development system. Deve unit contains 340g of magnetic toner carrier(developer
powder).
The developer powder is supplied to the magnetic(development) roller[A] by the two mixing augers[B]. The diameter
of the magnetic roller is 18 mm.
Deve unit has a TC(Toner Carrier) sensor[C]. It is used for controlling the operating range of toner density.
■ Developer Agitation
Two mixing augers[A] circulate the developer forward and backward to agitate the developer in order to mix the developer
and toner well.

Agitation job occurs at the following times. :
• During the process control self-checking (Warm up)

• During toner supply job
• During development job
If the deve unit is stored at temperature above 45°C (113°F), it does not works normally. The toner in deve unit is easy to
harden at temperature above 45°C (113°F). If the toner in deve unit is harden, the installation error occurs when installing it.

2.5.3. Toner Cartridge
The toner and carrier in the toner cartridge is mixing.
The toner cartridge contains 940g of toner and 90g of carrier.
Toner in the cartridge is transferred from Wheel-Paddle Toner[A] to Wheel-Auger Toner[B] and transferred from
Wheel-Auger Toner[B] to Reservoir
The toner cartridge has CRUM that stores the count information.
The toner in toner cartridge is easy to harden at temperature above 45°C (113°F).

2.5.4. PTB (Paper Transfer Belt) Unit
2.5.4.1. PTB unit overview
Paper Transfer Belt moves the paper.
The charged toner on drum is moved to the paper by the transfer roller in PTB unit. The rubber belt in PTB unit removes the
static of the paper and separates the paper from the drum. So, paper can move into the paper path.
This process is done with rotation of the PTB. The rotation is driven by the friction between the drive roller and PTB.
To The arrow above the C and M drums on the diagram shows the direction of ITB rotation. The rotation is made by
the friction between the drive roller and transfer belt. For this process, the drive roller and guide roller provides proper
tension to block slip.
There are 1 actuator and 2 photo sensors. An actuator recognizes the paper path and controls the paper speed for stable
image quality.
1 Belt PTB 6 Cleaning Blade

2 Transfer Roller 7 Guide-Waste Toner
3 Drive Roller 8 Actuator
4 Guide Roller
5 PHOTO INTERRUPTOR

2.5.4.2. Transfer belt drive
The drive motor[A] drives the transfer belt[B] by using gears and the PTB drive roller[C].

2.5.4.3. Cleaning Blade
The cleaning blade in PTB unit removes toner (during printing). Belt cleaning is completed while the transfer belt makes
one rotation.
The cleaning blade[A] always contacts the transfer belt[B], and removes the used toner from the belt.
The film[C] on the cleaning unit protects against toner contamination. The lens [D] always detects waste toner level. If the
light is blocked by waste toner, the machine displays the error message to inform the PTB replacement.

2.6. Fuser Unit
This section describes the image fusing process used by the machine.
2.6.1. Fuser Unit Overview
This unit fuses the toner that was transferred by the transfer roller onto the paper, by applying heat and pressure to complete
the fusing process. This machine uses an instant fusing system(NIF type).
NOTE
This fuser unit is commonly used for MX X7(Color) and K7(Mono) series.
1) Lamp Halogen
The fuser unit has two halogen lamps. One heats the center of the fusing belt, the other heats the end of axial direction.
These halogen lamps are lit alternately to heat the fusing belt. Each lamp has its coil in a different location. The coil of
the center heater lamp is in the center, those of the side heater lamp are on both sides. The lamps are fixed inside of
the fusing belt. When rotating the fusing belt, these lamps does not rotate.
2) Belt Fuser
The belt fuser gets heat from the halogen lamp and transfer it to toner and paper. The belt fuser consists of three
thin-layers. The thin fusing belt reduces warming up time and mode changing time. To prevent the fusing belt from
adhering to the toner, the surface of the fuser belt is fluorinated. There is a Nip inside the fusing belt. To maintain the
proper Nip between the fusing belt and pressure roller, the spring is used.
3) Roller Fuser Pressure

The pressure roller ensures proper nip width between the pressure roller and fusing belt. It is made up of the soft silicone
sponge rubber. And, it is driven by the driving system and drives the fusing belt.
4) Thermistor (NC sensor)

NC sensors (non-contact type thermistors), located near the center and the end of the fusing belt, control the temperature
of the fusing belt.

5) Thermostat
Thermostats cut off the power supply to the halogen lamp by opening the circuit when the fusing belt becomes
abnormally hot as a result of problems such as NC sensor malfunction. These thermostats are used to prevent abnormal
operation. When the thermostat is triggered, it must be replaced (as well as the other damaged parts in the fuser unit).
2.6.2. Fuser Unit drive
The fuser motor[A] drives the pressure roller[B] through the gear train. The fusing belt[C] pressurized by the pressure
roller[B] is rotated by driving it.

2.6.3. Fuser unit temperature control
When the main switch turns on, the CPU turns on the fusing lamp. The lamp stays on until the NC sensors detect the standby
temperature. Then the CPU raises the temperature up to the printing temperature.
■ Overheat Protection
The CPU cuts power to the fusing lamp in the following cases :
• The belt temperature detected by the NC sensors keeps higher than 220°C for 20 sec.
• The belt temperature detected by the NC sensors keeps higher than 230°C for 3 sec.
• The relay off works when belt temperature detected by the NC sensors is higher than 230°C
The following components are used when thermistor overheat protection fails :
• Two thermostats get into line with the common ground wire of the fusing lamp.
• If one of the thermostat temperatures becomes higher than 195°C, it opens and cuts power to the fusing lamp. If the
other thermostat temperature becomes higher than 195°C, it also opens and cuts power to the fusing lamp.

2.7. Laser Scanning Unit (LSU)
2.7.1. LSU overview
The LSU, consisted of 1 polygon motor and 1 LD unit, forms a latent image on the surface of 1 OPC drum. For this process,
there are collimator lens, cylindrical lens and F-Theta Lens on optical path.
Also, LSU has the cover glass device to protect the LSU from the contamination. For interface with set, LSU has the LD
PBA on front side.
1 LD PBA
2 P/Mirror Motor
3 F1 Lens
4 F2 Lens
5 Cover glass

2.7.2. Laser Scanning Optical path
The laser beam is emitted directly from a polygon motor [A] to OPC [D]. F1 Lens [B] and F2 Lens [C] determine the
scanning line and image position. This is adjusted at the factory.
The LSU has 3 types depending on printing speed. The difference between the 3 models is shown below.
Item Specification Remark

LD Unit Laser Diode : Quad Beam
Driving IC : Dual LD X2
P/Motor speed • K7600 : 33,071 rpm
• K7500 : 27,520 rpm
• K7400 : 22,087 rpm
Speed • K7600 : 280 mm/sec
• K7500 : 233 mm/sec
• K7400 : 187 mm/sec
H/W interface Interface with machine : 40 Pin FFC

2.7.3. Laser synchronizing detectors
The machine has a beam detector sensor board (PD PBA). It is located on the corner (mark “A”)
The PD board detects the point of scanning start.
Main Scan Start Detection

A beam is detected by the PD PBA at the scanning start point and creates the horizontal sync signal (Hsync).
The picture below shows the data scanning direction.

2.8. Drive System
2.8.1. Drive Motors
The following diagram displays the locations of the printer drive motors.
Motor Motor Type Qty Function

1 Fuser Relase PM-STEP 1 Fuser Release driving
2 Fuser & Exit BLDC 1 Fuser and Exit driving
3 Main OPC & Deve &PITB BLDC 4 OPC and PTB Belt driving
4 Regi. HB-STEP 1 Regi driving
Feed/MP HB-STEP 1 Feed roller 1, 2, 3 driving
5
E-CLT 1 Feed / MP driving control

Motor Motor Type Qty Function

6 Pick-Up PM-STEP 2 Pick-Up roller / CST Lift driving
(Reverse driving at CST Lift driving)
7 Toner Supply PM-STEP 1 Toner transfer (Toner cartridge →
Reservoir)
8 Toner Reservoir PM-STEP 1 Toner transfer (Reservoir → Deve unit)
9 CST lock DC 4 CST lock function On/Off

2.8.2. Main Drive Unit(OPC_Deve_ITB)
Power Train BLDC → OPC & Deve & PTB driving

• 1 BLDC → 2 Gear & Coupler (OPC driving)
• 1 BLDC → 3 Gear & Pulley → 4 Coupler (Deve driving)
• 1 BLDC → 5 Gear (PTB driving)

2.8.3. Pick-Up and CST Lift drive
Power Train Pick-up : normal rotation (Pick-up input) / counter rotation (Cst Lift input)
• 1 PM STEP → normal rotation → 2 Gear (Pick-Up driving)
• 1 PM STEP → counter rotation → 3 Gear → 4 5 Gear → 6 Gear & Coupler (Cst Lift driving)

2.8.4. Feed Drive
Power Train HB STEP → Feed & MP drive

• 1 HB STEP → 2 Pulley & Coupler → 3 Gear → 4 Gear & Coupler (Feed Roller driving) → 5 E-Clutch & Gear
(MP driving)
• 1 HB STEP → 2 Pulley & Coupler → 6 Gear & Coupler (Feed Roller driving) → 7 Pulley & Coupler (Feed Roller
driving)

2.8.5. Regi Drive
Power Train HB STEP → Regi driving

• 1 HB STEP → 2 Gear → 3 Gear (Regi Roller driving)

2.8.6. Fuser(Release)_Exit Drive
Power Train BLDC → Fuser & Exit driving

PM Step → Fuser Release driving
• 1 BLDC → 2 Gear (Fuser P/R driving)
• 1 BLDC → 3 Gear & Pulley → 4 Gear (Exit driving)
• 5 PM Step → 6 Gear → 7 Gear → 8 Gear (Fuser Release driving)

2.8.7. Toner Supply Drive
Power Train PM Step → Toner Supply driving

• 1 PM Step → 2 Gear → 3 Gear (Toner Supply driving)

2.8.8. Toner-Reservoir Drive
Power Train PM STEP Motor → Toner Reservoir Auger & Paddle driving
• 1 PM STEP Motor → 2 Gear → 4 Gear & Latch → 5 Pulley & Gear (Paddle driving)
• 1 PM STEP Motor → 2 Gear → 3 Gear & Latch (Auger driving)

2.8.9. CST Lock Drive
Power Train DC Motor → CST Lock driving

• 1 DC Motor → 2 Gear & Cam → 3 Holder (CST Lock driving)

2.9. Scanner System
This section describes the printer scanner system parts and functions.
2.9.1. Scanner System Overview
The scanner is a device to change from the image to the data. To scan the picture, image on the original, it uses the lens and
CCD(Charge Coupled Device). It stores and transfers the converted image to the storage space or transfers the scanned
data to the printer engine for copy.
For scan operation, the scanner uses FR carriage and HR carriage that is moved by the wire. And it scans the original
document on the scan glass or ADF(Auto Document Feeding).
The scanner system consists of 3 modules following below.
• FR(Full Rate) carriage: Illuminates the original and reflects the light at a 90 degree angle.
• HR(Half Rate) carriage: Transfers the reflected light from the FR carriage to the lens.
• Imaging module: Make an image on CCD
HR carriage moves at half distance and half speed of FR carriage. This principle keeps a regular gap between the original
and imaging lens.

The following describes the scan process.
1) Lamp installed to FR carriage illuminates the original. The reflected light is moved to Mirror #1.
2) The reflected light from Mirror #1 is send to imaging lens through the Mirror #2,3.
3) The light becomes smaller and makes an optical image.
4) The optical image is generated to the electrical signal by the CCD sensor.
To make a stable image, the gap between original and lens must be kept. For this, HR carriage moves at half distance and
half speed of FR carriage.

Optical image made by CCD sensor is changed to electrical-analog signal.
Each color element signal in optical image is separated by CCD sensor to Red, Green, Blue.
Red CCD sensor element extracts the red color from optical image, green CCD sensor element extracts the green color
from optical image, and blue CCD sensor element extracts the blue color from optical image. After extraction, each
color is changed to electrical-analog signal.
Analog image signal is changed to digital image signal by A/D converter and transfers to the processor.
Image scan of the main scanning direction is performed by CCD sensor. CCD sensor consist of approx. 7500 pixel.
Image scan of sub scanning direction is performed by FR carriage and HR carriage. The carriage is moved by the wire
driven the scan motor.
Scan resolution is 600dpi.

2.9.2. Scanning System Components
The following shows the construction and purpose of the scanning system :
To scan the original on scan glass, two carriages driven the motor moves at a regular speed. The motor drives the timing
belt, pulley, and wire. The wire pulley rolls and releases the wire to move carriage.
The scanner consists of the scan glass, FR carriage, HR carriage, Imaging unit, and Driving unit.

1) FR Carriage
1) LED lamp module

This module illuminates the light on original. Two–white LED is assembled to the side of the module. The original is
illuminated by the light-guide. The heat sink is assembled to the LED PCB. When it is broken or its life is expired,
engineer needs to replace it.
• Light-Guide
Light-guide changes the light from the point type to the line type. It is made by the transparent resin and controls
the amount of light in scan area uniformly.
• White LED
White LED emits the white light. The heat sink assembled to the PBA prevents a heat deterioration.
• Reflection holder
This reflects the passed light through Light-guide.
2) Mirror #1
This changes the direction of reflected light at a 90 degree angle.

2) HR Carriage (Mirror unit)
1) Mirror #2, #3
To changes the light direction, Mirror #2,3 is assembled at a 45 degree angle. The reflected light from Mirror #1 is
send to imaging lens through the Mirror #2,3.
2) Pulley
This is Ball bearing type. Pulley rolls and release the wire. This makes the HR carriage moves the half distance
of the FR carriage.
3) Imaging unit
Image unit changes from the optical image to electrical signal.
1) Imaging lens
The reflected light through the imaging lens is focused on CCD. The image reduces to fix the CCD sensor size and
pixel size CCD.
2) CCD PBA
The image made by lens is changed to the electrical signal by CCD. CCD consists of 3 channel line sensor for color
image creation. The brightness and darkness of image is settled to the voltage level from CCD. The output voltage is
changed to the digital signal. The digital signal makes the scan image through image process.
4) Wire driving
To move the carriage stably, the wire is assembled in the front and rear position of the scanner. Pulley rolls and release the
wire to move the FR carriage and HR carriage.

5) Flat-bed glass
The original is placed on the flat-bed glass for scan or copy. This is made by the tempered glass and is fixed by the frame
to prevent the distortion.
6) Drive motor
Scanner drive system uses the step motor to move the carriage. It controls the position and constant speed. The motor power
is transferred to the wire through timing belt and pulley.
7) Timing Belt
Timing belt has the regular sawtooth and transfers the motor power to the pulley.

8) Paper size sensor

This detects the paper size on scan glass automatically. It has 2 sensors. It uses the infrared LED to detect the dark original.
9) Home sensor
This is to detect the FR carriage position. It is a transmission photosensor.
10) Cover open sensor #1

When the ADF unit open and close, this has trigger function to detect the on/off of paper size sensor. And this detects
the width of the original.
11) Cover open sensor #2

This is the reed switch to detect that the ADF unit is closed. It uses the magnetic force for ADF close detection.
12) ADF glass

ADF glass scans the original through ADF unit. When the original passes on this, FR carriage reads the original. If it is
contaminated, the horizontal black line or white line can be created.
13) Shading sheet

This makes the scan module detect the base for white color. Before every scan-job, scan module reads the shading sheet to
scan image as same color and brightness. If it is contaminated, the vertical image can be created.


2.9.3. Caution for moving the scanner
When shipping or moving, the FR and HR carriage in scanner is slipped or swayed. To prevent the damage of the FR and
HR carriage, carriages must be fixed.
1) When installing
After unpacking, before turning the machine on, the scan locking screw must be removed. If not, it causes the scanner failure.
1) When installing the machine, remove the scan locking screw.
2) After removing the screw, assemble the screw cap from accessory package.
2) When moving
When moving the machine, tighten the scan locking screw to prevent the damage of the carriage.
1) Check if the FR carriage is located to the home position.
2) Remove the screw cap.
3) Tighten the M3×8 screw to fix the FR carriage.

2.10. Dual Scan Document Feeder(DSDF) for LX model
2.10.1. DSDF overview
Symbol Part Name Function

R1 Stacker Assy Paper input tray
R2 GUIDE-DOCU F&R Paper guide for skew prevention
R3 Pick-Up roller Picks up an original from the tray.
R4 ADF roller Separates an original from the tray and transfers it to the paper path.
R5 Reverse roller Prevent the multi-feeding.
R6 Regi. roller Aligns the leading edge of the paper for registration.
R7 Scan In roller Feeds an original before simplex scanning.
R8 Simplex White-Bar Supports a stable scanning.
R9 Scan Out roller Feeds an original before duplex scanning.
R10 D-CIS module Scans a back page of original.
R11 Exit roller Transfers a scanned original to the exit tray.

2.10.2. Electrical parts location

Ref. Description Part Code Controller board

S1 ADF-PBA JC92-02729A ADF-PBA
S2 FAN JC31-00146A ADF-PBA
S3 MOTOR-BLDC TYPE1(PICK-UP/FEED) JC31-00163A ADF-PBA
S4 CLUTCH-ELECTRIC JC47-00038A ADF-PBA
S5 STEP-MOTOR(REGI) JC31-00163A ADF-PBA
S6 PHOTO-INTERRUPTER(PAPER-WIDTH 2) 0604-001394 ADF-PBA
S7 PHOTO-INTERRUPTER(PAPER-WIDTH 1) 0604-001394 ADF-PBA
S8 HARNESS-MP SIZE SENSOR JC39-02087A ADF-PBA
S9 PHOTO-INTERRUPTER(SCAN OUT) 0604-001381 ADF-PBA
S10 CONTACT IMAGE SENSOR 0609-001558 MAIN PBA
S11 PHOTO-INTERRUPTER(EXIT) 0604-001394 ADF-PBA
S12 PHOTO-INTERRUPTER(MSO) 0604-001490 ADF-PBA
S13 PHOTO-INTERRUPTER(REGI) 0604-001381 ADF-PBA
S14 PHOTO-INTERRUPTER(SCAN IN) 0604-001381 ADF-PBA
S15 PHOTO-INTERRUPTER(DETECT) 0604-001394 ADF-PBA
S16 PHOTO-INTERRUPTER(PICKUP) 0604-001394 ADF-PBA
S17 PHOTO-INTERRUPTER(COVER OPEN) 0604-001394 ADF-PBA
S18 PHOTO-INTERRUPTER(FEED OUT) 0604-001490 ADF-PBA

2.10.3. DSDF Drive System
DSDF drive system consists of two motors and one clutch to transfer paper.
1 BLDC motor and 1 step motor drive the system for simplex and duplex job.
• BLDC motor is used for picking up original and pick up is controlled by the clutch.
• Step motor is used for the original registration.
• BLDC motor is used for feeding a original.

2.10.3.1. DSDF Original Pick-Up Assembly
DSDF Original Pick-Up Assembly consists of Pick-up Drive Assy, Pick-up Assy, and Guide Pick-up Assy.
• Operation Procedure
1) Checks a paper detection.
2) Checks the original width size.
3) Holds the original not to be moved in paper path before pick up driving.
4) Starts pick up driving.
5) Separates an original by the reverse roller.

2.10.3.2. DSDF Original Regi. Drive
DSDF Original Regi Drive consists of Regi motor, Regi roller, Regi sensor etc.
1) The picked up original is detected by Regi-Actuator and the regi sensor is on. At this time, the regi motor is
stopped and the original is aligned.
2) After the regi sensor is on, regi motor rotates.
3) After the transferred original passes the regi. actuator, the regi sensor is off and the regi motor stops.

2.10.3.3. Original Scanning and Feed-Out Drive
Feed-Out Drive consists of Feed motor, Scan In driving module, Scan Out driving module, and Exit driving module etc.
1) The feed motor transfers the power by the timing-belt.
2) When original passes the scan in sensor, simplex scan starts.
3) Simplex white-bar functions to prevent the wrinkle and background.
4) When original passes the scan out actuator, duplex scan starts.
5) Duplex white-bar functions to prevent the wrinkle and background.
6) Original is transferred to exit tray.

2.11. Dual Scan Document Feeder(DSDF) for GX model
2.11.1. DSDF overview
Symbol Part Name Function

A1 Stacker Assy Paper input tray
A2 GUIDE-DOC F&R Paper guide for skew prevention
A3 D-CIS module Scans a back page of original.
R1 Pick-Up roller Picks up an original from the tray.
R2 ADF roller Separates an original from the tray and transfers it to the paper path.
R3 Reverse roller Prevent the multi-feeding.
R4 Feed Roller Transfers a original.
R5 Pre Regi Roller Aligns the leading edge of the paper for registration. (skew prevention)
R6 Regi. roller Aligns the leading edge of the paper for registration. (skew prevention)
R7 Simplex Scan In roller Feeds an original before simplex scanning.
R8 Simplex White Roller Supports a stable scanning.
R9 Duplex Scan In roller Feeds an original before duplex scanning.
R10 Duplex White Roller Supports a stable duplex scanning.
R11 Scan Out roller Transfers a scanned original.
R12 Exit roller Stacks a scanned original on the exit tray.

2.11.2. Electrical parts location


Ref. Description Part Code Controller board

P1 PBA-DSDF HIGH JC92-02828A ADF-PBA
P2 PBA-WLED INDICATION JC92-02829A ADF-PBA
M1 MOTOR STEP 1P JC31-00009C ADF-PBA
M3 MOTOR STEP JC31-00132A ADF-PBA
M6 MOTOR STEP 1P JC31-00177A ADF-PBA
F1 FAN-DC JC31-00168A ADF-PBA
F2 FAN JC31-00146A ADF-PBA
F3 FAN-TYPE 1 JC31-00152B ADF-PBA
S1 PHOTO INTERUPTER 0604-001393 ADF-PBA
S3 HARNESS-MP SIZE SENSOR JC39-02087A ADF-PBA
S8 CONTACT IMAGE SENSOR 0609-001558 MAIN PBA

2.11.3. DSDF Drive System
DSDF drive system consists of 8 motors to transfer paper.
8 Step motors control roller and CAM of the DSDF drive system.
• Pick-up roller is controlled by a step motor and transfers paper to the DSDF inside.
• Pre-Regi roller is controlled by a step motor and aligns paper.
• Regi roller is controlled by a step motor and aligns paper.
• Scan-in/out roller and white roller are controlled by a step motor.
• Exit roller is controlled by a step motor and stacks papers on the tray.
• Stacker Lift is controlled by a step motor and lift paper to the pick up roller.
• Pick up roller, Reverse roller and Scan-in roller are released by a step motor and CAM.
•

2.11.3.1. DSDF Original Pick-Up Assembly
DSDF Original Pick-Up Assembly consists of Pick-up motor, Pick-up Assy, Reverse roller, Feed roller and Guide
Pick-up Assy.
2) Starts pick-up driving by suppling power to motor.
3) Transfers a paper to the ADF roller by driving the pick up roller.
4) Separates an original by the reverse roller.
5) Transfers a paper to the pre-regi roller by driving the feed roller.

2.11.3.2. DSDF Original Pre-Regi Assembly
DSDF Original Pre-Regi Assembly consists of Pre-Regi Motor, Pre-Regi Roller, Pre-Regi Idle Roller, and Pre-Regi Sensor.
1) When a picked up original is detected, the Pre-Regi sensor is on. At this time, the Pre-Regi motor is stopped
and the original is aligned.
2) After the Pre-Regi sensor is on, Pre-Regi motor rotates.
3) After the transferred original passes the Pre-Regi. sensor, the Pre-Regi sensor is off and the Pre-Regi motor stops.

2.11.3.3. DSDF Original Regi Assembly
DSDF Original Regi Assembly consists of Regi Motor, Regi Roller, Regi Idle Roller, and Regi Sensor.
1) When a picked up original is detected, the Regi sensor is on. At this time, the Regi motor is stopped and the
original is aligned.
2) After the Regi sensor is on, Regi motor rotates.
3) After the transferred original passes the Regi. sensor, the Regi sensor is off and the Regi motor stops.

2.11.3.4. DSDF Original Scanning Drive Assembly
DSDF Original Scanning Drive Assembly consists of Scan Motor, Scan In/Out Roller, White Roller, Scan In Sensor,
and D-CIS.
1) The scan motor and timing-belt make the roller rotate.
2) When original passes the scan in sensor, simplex scan starts.
3) Simplex white roller functions to prevent the wrinkle and background.
4) When original passes the duplex scan in sensor, duplex scan starts.
5) Duplex white roller functions to prevent the wrinkle and background.
6) Scanned original is transferred to the exit roller by the scan out roller.

2.11.3.5. DSDF Original Exit Assembly
DSDF Original Exit Assembly consists of Exit Motor, Exit Roller, Exit Idle Roller, Exit Sensor.
1) When a passed original from scan out roller is detected, the exit sensor is on. At this time, the speed of the exit
roller is the same with the scan out roller.
2) When the exit sensor is off, the exit motor speed will be slow for the stable stacking.

2.11.3.6. DSDF Original Lifting Assembly
DSDF Original Lifting Assembly consists of Lift Motor, Lift Shaft, Lift Bar, Paper Sensor.
2) Starts lifting driving by suppling power to motor.
3) Lift up the tray by a Lift Bar.
4) When the paper contacts to the pick up roller, the motor driving stops.

2.11.3.7. DSDF Original Pick-up_Reverse roller Release Assembly
DSDF Original Pick-up_Reverse roller Release Assembly consists of Release Motor, Pick-up / Reverse Roller Release
CAM , Detecting Sensor.
1) When starting a scanning job, pick up roller contacts the reverse roller.
2) When completing a scanning job or occurring the jam, these rollers are separated.
3) Two CAMs are controlled by a motor and one-way bearing.

(Normal rotation : Pick-up CAM operates / Reverse rotation : Reverse CAM operates)

2.11.3.8. DSDF Scan in Roller Release Assembly
DSDF Scan in Roller Release Assembly consists of Release Motor, Release CAM, Scan In Idle Roller.
1) Release CAM controls the Idle roller to keep the stable scanning quality.
2) Motor and CAM operation repeats per one paper.

2.12. Hardware Configuration
MultiXpress K7 series Electrical Circuit System consists of the following :
• Main Controller (Main board)

• OPE Unit
• ADF(DSDF / RADF) Controller
• HVPS board
• SMPS board
• FDB board
Diagram of the MX K7 Series Electrical Circuit
FU S E R O PC TB GUI SC A N N ER
CRU M CRU M CRU M CARD
R EA D ER
O PC TO N ER
FU S E R H V PS HV W TB
U N IT B O T T LE IR UI (new)
RADF
TSP(C-type) (Old)
LC D
P LA T E N
IT B D E V E IF T B IF C R U M IF T FT 10.1"
M SO K
M A IN C O N T R O LLE R eMMC (IR UI_new)

SM PS SD card (TSP_old)
TY PE5 BO O T D EVIC E
SM PS
T Y P E 3/4(O pt.)
D R IV E O U TPU T FE E D A N A LO G LS U H DD
IN T E R FA C E FA X 1
U N IT S T A C K IN G U N IT SEN SO R U N IT 320G B
FA X 2
P IC K U P
1/2
IN N E R IN N E R P O LY G O N U S B 3.0
STEP 1 st C A S S E T T E
FIN IS H E R T E M P /H U M I M O TO R D E V IC E
FE E D
O PC STA N D A R D 2nd
O U TER U S B 3.0
B LD C C A SSETTE LD
Y /M /C FIN IS H E R T E M P /H U M I H O S T x2
R EG I
D E V E LO P E R
B O O LK E T N ETW O R K
O P C K /IT B DC D C F U N IT LS U T E M P PD SY STEM
R E S O R V O IR FIN IS H E R G IG A B IT
K C ,M Y
N ETW O R K C R U N IT
FU S E R P U N C H K IT H C F U N IT A C R /C T D
G IG A B IT
D U P LE X 1/2/3
O P T IO N A L
LC T T H E R M IS T O R U N IT
ACR
W T B ,T 1
SH U TTER
T /C S E N S O R PB A TY PE
FU S E R
C S T LO C K 1, 2
R E LE A S E
LS U S K E W A SSY C O M P.
YM C
TO N ER SU P S IN G LE C O M P .
K C ,M Y
The main controller handles the video controller, engine controller and scan controller.
The main controller receives print data from the host through the network or USB port, and it receives copy data from the
Scan Controller. It takes this information and generates printable video bitmap data. It controls all modules required to
print, that is, LSU, HVPS, FAN, Fuser, etc.
The main controller communicates with the drive system and other devices through UART(Universal Asynchronous
Receiver Transmitter). It communicates with the toner cartridge and drum/developer unit through I2C to check their life.
The main controller adopted Quad Core CPU 1.5GHZ, DDR3 4GB(old model)/6GB(new model(IR UI) memory, Micro
SD 4GB(old model)/eMMC 4GB(new model(IR UI)), 320GB SATA HDD to control the engine driving, video signal
processing, interface, etc. successfully.
A MICOM at the main controller controls the fuser lamp on/off and system power according to an optimized energy-saving
algorithm for optimal efficiency. It also communicates with the OPE Controller through the USB 2.0 protocol to display
the system information on LCD.

Main controller communicates with the OPE Controller through the A3000 LCD Control Block and LVDS Data cable
to display the system information on LCD.
The OPE Unit displays the status of the system by using the WQXGA(old model)/WSVGA(new model((IR UI)) TFT
LCD in response to user actions or the main controller.
The soft power switch in the OPE Unit is used to safely shut down the system power.
The ADF Controller controls some mechanisms required to scan by feeder continuously and communicates with the main
controller to synchronize the scanning timing.
The HVPS board generates high-voltage channels and controls it. The FDB board controls the fuser lamp On/Off. The
SMPS board generates the 5V, 24V for system power.
Circuit Board Locations

The following diagrams show the locations of the printer circuit boards :

2.12.1. Main Controller (Main Board)
NOTE
The main controller for previous model is not compatible with new model(IR UI). When replacing the main controller, be
careful not to be replaced with incompatible one.
1) Main Controller for previous model

The main controller consists of the main processor(A3000), memory(DDR3 4GB), Micro SD(4GB), 1G Ethernet
PHY,USB3.0 HUB, Micom(Power/Fuser control) and can control Video/UI/FAX signal interface connection, motor driving
IC, Engine signal interface connection, power interface.
The main processor (Quad Core 1.5GHz CPU) controls video, engine, UI display and communicates with the various
devices. The HDD is connected to the main controller by SATA cable and to the other device (ADF, DCF, Finisher,
Modem) by UART.
1) Main Controller Block Diagram

FUSER
PTB SCANNER
Ch2
USB 3.0 HUB P B A
10 .1" OPE TONER C R UM
TFT LCD OPC C R UM DSDF
Ch1
R TC
WIFI/NFC MODULE 2 nd NW
Ch0
DE B UG _MCB
FR ONT Ch0
R TS 5401 PL A TEN Ch1
CARD READER USB DE B UG _SCB
4Port HUB HOST MSOK
Ch0 Ch2
DE B UG _ENGINE
Ch3
ENGINE PANEL
Ch4
A TSAMD 2E 15
USB SCANIF SCANIF
REAR R TS 5401 I2C SPI Ch5
USB 3.0 CH 0 CH 1 DSDF
HOS
4Port HUB Ch6
HOST DCF
1/2
Ch7
FINISHER
Ch9
UART EFI
REAR USB
USB 3.0 Ch10
MODEM 0
DEVICE DEVICE
Ch11
MODEM 1
FUSER FUSER UNIT
DD R C
DDR 3 4G
800 Mhz
8Gb (x16), x4 64 bit
NCTH 1 C /D NCTH 2 C /D
M A GIC 12Bit ADC A TSAMD 2E 15
IO External ADC
12b A N A LOG MUX
A N A LOG MUX READ MHV YMCK , THV YMCK
MP SIZE/ PAPER SIZE1,2 / TC YMCK / CTD ,ACR / FUSER /WTB
ADC
INNER, OUTTER , EXIT
1.8V EFI VIDEO
HUMI DITY, MODEL SEL , AC Level
PCIex
Step Motor FB
/ 24V FB CONT R OLLER
ENG INE
M AC0
R TL 8211 E RJ 45
A 3000 Gigabit phy BASE
STEP M O T D R V 8825
PICKUP1/2, FEED , REGI, X10
R TL 8211 E RJ 45
M AC1
DUPLEX _RET/1/2 CTRL. Gigabit phy EXTEND
SI-7321 M
FUSER RELEASE , TONER SUPPLY YM /CK OPTION KIT
TONER RESERVOIR YM /CK X2
FAN S A TA
SENSOR EXIT1/2/3, SMPS , S A TA
2.5", 320GB
EMPTY 1/2, LIFT1/2, PRE FEED 1/2, FEED DEVE ,
REGI, MP _EMPTY /SIZEL/W , CURL 2, FUSER OUT CTRL. GPIO
FUSER IN/OUT , BIN_FULL_EXIT1/2, PWM
DUPLEX _JAM 1/2, DUPLEX _RETURN , BLDC 4BEAM LSU
PAPER _SIZE1/2, WASTE _INSTALL, PTB/K, FUSER YMCK
RESERVOIR Y/M /C /K, LSUC CTRL. LD1
FUSER POS , LSU _MOT 1
COVER OPEN FRONT /SIDE, HVPS VDO 1B_K
SCAN HOME / APS 1,2/LSU, MHV K VDO 2B_K
PLATEN COVER OPEN 1,2 DEV DC K HP V C VDO DATA VDO 3B_K
DEV AC VPP K VDO 4B_K
SOLENOID /C LT DEV AC
CLT : MP DEV AC EN K
SOL : MP /EXIT EN THV /THV K
mic roSD
DC M O T THV /THV CLEAN MMC CTRL. 4GB
SAW /FUSER BIAS
CST LOCK 1/2 Boot Device
2) Main Controller Clock Diagram

M 41T81
RTC w ith IRQ
32.768Khz
CrystalInput
RTS5401
U SB3.0 H U B
12M hz
Crystal
Input
A TSA M D A3000 CH 0_CLK_P(800M hz)

20E15 D D R3 8G b
D D R3 C H 0 CH 0_CLK_N
12M hz K4B8G 1646B
Crystal
Input
RTC D D R3 8G b
K4B8G 1646B
CH 1_CLK_P(800M hz)
N .C
D D R3 8G b
ASM 3P2863 Clk0 D D R3 C H 1 CH 1_CLK_N K4B8G 1646B
12M hz CLK_M A IN (Spread 12M hz)
Crystal Clk1
Input CLK_PU RE(Reference 12M hz)
Sel Clk2 D D R3 8G b
K4B8G 1646B
M AC0
SA TA _REFCLK_P(100M hz) M A C0_G TX_CLK(125M hz)
25M hz PL602-21 Clk0 N ETW O RK PH Y 12M hz
Crystal SA TA _REFCLK_N M A C0_RX_CLK(125M hz) Crystal
Input Clk1 RTL8211 Input
M AC1 N ETW O RK O PTIO N PBA

PCI_REFCLK_P(100M hz) M A C1_G TX_CLK(125M hz)
25M hz PL602-21 Clk0 N ETW O RK PH Y 12M hz
Crystal PCI_REFCLK_N M A C1_RX_CLK(125M hz) Crystal
Input Clk1 RTL8211 Input
CLK_M A IN _CCD M _P(35M hz)

25M hz
U SB3D _REFCLK_P(100M hz) CCD M
PL602-21 Clk0 CLK_M A IN _CCD M _N
Crystal U SB3D _REFCLK_N
Input Clk1 SC AN0 RX_CLK_CCD M _P(35M hz)
RX_CLK_CCD M _N
U SB3H _REFCLK_P(100M hz) CLK_M A IN _D CIS_P(35M hz)

D CIS
U SB3H _REFCLK_N SC AN1 CLK_M A IN _D CIS_N
RX_CLK_D CIS_P(35M hz)
RX_CLK_D CIS_N
3) Main Controller Connection Information

• Connection
1 EXIT 14 SMPS TYPE3R 27 CCDM

2 FUSER DRIVE 15 FRONT IF MONO 28 DSDF
3 FUSER DRAWER 16 FDB IF 29 HDD POWER
4 TB_DEVE CRUM 17 LSU MONO 30 HDD SIGNAL
5 TONER SUP_RES 18 HVPS MONO 31 SIDE FAN
6 CTD_REGI SENS 19 USB HOST 1/2 32 MSOK
7 PICKUP 1/2 20 USB DEVICE 33 SD CARD
8 FEED_REGI MOT 21 NETWORK 34 FAX JOINT
9 SIDE 22 EFI POWER 35 2ND NETWORK
10 DCF IF 23 FDI JOINT 36 EFI SIGNAL
11 FINISHER 24 UI IF 37 CPU FAN
12 OPC BLDC MONO 25 USB HOST_HUB
13 SMPS TYPE5 26 DCIS
• Information
- Part Code

▪ JC92-02736A for LX model (K7600LX, K7500LX, K7400LX)

▪ JC92-02736B for GX model (K7600GX, K7500GX, K7400GX)
- Part Name : PBA-MAIN
2) Main Controller for new model(IR UI)

The main controller consists of the main processor(A3000), memory(DDR3 6GB), eMMC(4GB), 1G Ethernet PHY,USB3.0
HUB, Micom(Power/Fuser control), can control Video/UI/FAX signal interface connection, motor driving IC, Engine
signal interface connection, power interface.
The main processor (Quad Core 1.5GHz CPU) controls video, engine, UI display and communicates the various devices. The
HDD is connected to the main controller by SATA cable and to the other device (ADF, DCF, Finisher, Modem) by UART.
1) Main Controller Block Diagram

O P E IR
C h3
IR P B A FU S E R
10.1"
C h2 PTB SC A N N ER
T FT LC D
TO N ER C R U M
C h1
D SD F
O PC C R U M
U S B 3.0 H U B P B A
R TC
W IFI/N FC M O D U LE C h0
D E B U G _M C B
FR O N T 2 nd N W
R T S 5411 C h0 P LA T E N C h1
C A R D R EA D ER U SB D IM M D E B U G _S C B
4Port H U B H O ST
M S O K /T P M C h2
D E B U G _U I
C h3
E N G IN E P A N E L
LC D C h4
A T S A M D 2E 15
C on. S C A N IF S C A N IF
I2C SPI C h5
CH 0 CH 1 D SD F
R EA R U SB C h6
U SB H O ST
R T S 5401 3.0 DCF
1/2 4Port H U B
H O ST C h7
FIN IS H E R
C h9
U ART E FI
R EA R U SB
U SB 3.0 C h10
M O D EM 0
D EVIC E D E V IC E
C h11
M O D EM 1
FU S E R FU S E R U N IT
D D R 3 6G B DDRC
O n-board 4G B 800M hz
D IM M 2G B 32bit
NC TH 1 C /D NC TH 2 C /D
M A G IC 12Bit AD C A T S A M D 2E 15
IO ExternalAD C 12b A N A LO G M U X
A N A LO G M U X READ M H V YM C K, TH V YM C K
M P SIZE / PAPER SIZE1,2 / ADC TC YM C K / C TD ,AC R / FU SER / W TB
INNER, O U TTER, EXIT, LSU TEM P 1.8V
H U M ID ITY, M O D EL SEL, AC Level E FI V ID E O
P C Iex
Step M otor FB/ 24V FB C O N T R O LLE R
* C olor m odel
ENG INE
M AC0
R T L8211E R J45
STEP M O T
PIC KU P1/2, FEED , REG I, T1 ENG AG E,
D R V 8825
X15
A 3000 G igabit phy BASE
D U PLEX_RET/1/2, SKEW Y/M /C , S I-7321M

CTRL.
W TB, FU SER RELEASE, TO NER SU PPLY X2 R T L8211E R J45
YM /C K, TO NER RESERVO IR YM /C K, M AC1
A N 44061A G igabit phy EXTEND
C ST LO C K, X1
O PTIO N KIT
FA N SA TA
SEN SO R EXIT1/2/3/4,SM PS(LX/G X), SA TA
2.5", 320G B
EM PTY 1/2, LIFT1/2, PRE FEED 1/2, FEED C PU , LSU , D EVE,SID E,
REG I, M P_EM PTY/SIZEL/W , C U RL2, FU SER O U T CTRL. G P IO
FU SER IN/O U T, BIN_FU LL_EXIT1/2, PW M
D U PLEX_JAM 1/2, D U PLEX_RETU RN , B LD C 4B E A M LS U
PAPER_SIZE1/2, W ASTE_INSTALL, O PC Y,M ,C ,K/ITB, YM CK
O PC _PH ASE Y/M /C /K, RESERVO IR Y/M /C /K, FU SER LS U C CTRL. LD 1,2,3,4
TO NER SU P YM /C K, ITB H O M E, FU SER PO S, LSU _M O T1
C O VER O PEN FRO NT/SID E, H V PS
VD O 1B_YM C K
SC AN H O M E / APS 1,2 SH U TTER AC R, M H V YM C K
VD O 2B_YM C K
PLATEN C O VER O PEN 1,2 D EV D C YM C K H PV C VD O D ATA VD O 3B_YM C K
D EV AC VPP YM C K
VD O 4B_YM C K
S O LE N O ID /C LT D EV AC
C LT : M P D EV AC EN YM C K
SO L : M P / EXIT TH V1 YM C K
TH V2(C V/C C ) / TH V eM M C
DC M O T C LEAN MMC CTRL. 4G B
AC R SH U TTER, C ST LO C K 1/2 SAW / FU SER BIAS Boot D evice
2) Main Controller Clock Diagram

32.768Khz
M 41T81
CrystalInput RTC w ith IRQ
12M hz
RTS5401 A3000 CH 0_CLK_P(800M hz)
Crystal D D R3 2G B
Input U SB3.0 H U B D D R3 C H 0 CH 0_CLK_N
(4G b*8*4ea)
RTC D D R3 2G B
(4G b*8*4ea)
CH 1_CLK_P(800M hz)
N .C
D D R3 2G B
ASM 3P2863 Clk0 D D R3 C H 1 CH 1_CLK_N (4G b*8*4ea)
12M hz CLK_M A IN (Spread 12M hz)
Crystal Clk1
Input CLK_PU RE(Reference 12M hz)
Sel Clk2 D D R3 2G b_tem p
(4G b*8*4ea)
M AC 0
SA TA _REFCLK_P(100M hz) M A C0_G TX_CLK(125M hz)
25M hz ID T6U 41362 D IF_CLK_P N ETW O RK PH Y 12M hz
Crystal SA TA _REFCLK_N M A C0_RX_CLK(125M hz) Crystal
Input D IF_CLK_N RTL8211 Input
M AC 1 N ETW O RK O PTIO N PBA

PCI_REFCLK_P(100M hz)
D IF_CLK_P M A C1_G TX_CLK(125M hz)
PCI_REFCLK_N N ETW O RK PH Y 12M hz
D IF_CLK_N M A C1_RX_CLK(125M hz) Crystal
RTL8211 Input
CLK_M A IN _CCD M _P(35M hz)

25M hz U SB3D _REFCLK_P(100M hz) CCD M
ID T6U 41362 D IF_CLK_P CLK_M A IN _CCD M _N
Crystal U SB3D _REFCLK_N
Input D IF_CLK_N SC AN0 RX_CLK_CCD M _P(35M hz)
RX_CLK_CCD M _N
U SB3H _REFCLK_P(100M hz) CLK_M A IN _D CIS_P(35M hz)

D IF_CLK_P
U SB3H _REFCLK_N D CIS
D IF_CLK_N CLK_M A IN _D CIS_N
SC AN1
RX_CLK_D CIS_P(35M hz)
RX_CLK_D CIS_N
3) Main Controller Connection Information

• Connection
1 EXIT 14 SMPS TYPE3R 27 DCIS

2 FUSER DRIVE 15 FRONT IF MONO 28 CCDM
3 FUSER DRAWER 16 FDB IF 29 DSDF
4 TB_DEVE CRUM 17 LSU MONO 30 HDD POWER
5 TONER SUP_RES 18 HVPS MONO 31 HDD SIGNAL
6 CTD_REGI SENS 19 USB HOST 1/2 32 SIDE FAN
7 PICKUP 1/2 20 USB DEVICE 33 MSOK
8 FEED_REGI MOT 21 NETWORK 34 FAX JOINT
9 SIDE 22 EFI POWER 35 2ND NETWORK
10 DCF IF 23 FDI JOINT 36 EFI SIGNAL
11 FINISHER 24 HUB IF 37 DDR3 DIMM
12 OPC BLDC MONO 25 USB HOST_HUB 38 CPU FAN
13 SMPS TYPE5 26 UI IF
• Information
- Part Code:
▪ JC92–02922D for LX model (K7600LX, K7500LX, K7400LX)
▪ JC92–02922C for GX model (K7600GX, K7500GX, K7400GX)
- Part Name : PBA-MAIN

3) Master System Operation Key (MSOK)

MSOK PBA is used to store all system information and consists of serial flash memory, a EEPROM and a ACRUM. The
flash memory(4MByte), EEPROM(256Kbit) and ACRUM are used for all system operation(system parameter, device status,
tech information, and service information).
NOTE
When a main board needs to be exchanged, the MSOK PBA should be re-installed to the new main board to retain the system
information.
• Connection
1 Main PBA I/F connector

4) Fax Joint PBA

The FAX JOINT PBA is used for interfacing between the main board and modem PBA.
It uses UART for interface.
• Information
- Part Code : JC92-02743B
- Part Name : PBA-FAX JOINT
• Connection
2 Modem Card I/F connector

5) Fax Card (Optional)

The fax card is used to transfer and receive the fax data through a telephone line. This PBA is controlled by the main board.
1) 1st Modem
• Information
- Part Code : JC92-02558A
- Part Name : PBA-FAX CARD
• Connection
1 FAX JOINT I/F connector

2 TEL Line I/F connector
3 External Phone I/F connector
2) 2nd Modem
• Information
- Part Name : PBA-FAX CARD
• Connection
1 FAX JOINT I/F connector

2 TEL Line I/F connector

3) Fax Joint PBA (Only used dual fax kit)
• Information
- Part Name : PBA-FAX JOINT
• Connection

2 Modem Card I/F connector (2nd)
3 Modem Card I/F connector (1st)

6) Foreign Device Interface (FDI) (Optional)

The FDI Module as a option is used to track machine usage such as the number of print or copy pages for some special
users. This module interfaces to the main board.
• Information
- Part Name : PBA SUB-FDI
• Connection
1 Connector to Video Controller
7) Dual Network board (Optional)

The Dual Network board as a option is used to make Dual Network environment.
It provides 2nd Network Port.
• Information
- Part Name : PBA-NPC
• Connection
1 GIGA N/W RJ45

2.12.2. HUB PBA
NOTE
The HUB PBA for previous model is not compatible with new model(IR UI). When replacing the HUB PBA, be careful not to
be replaced with incompatible one.
USB HUB PBA for previous model

USB Hub PBA is used to interface with the main board, UI, USB Memory stick, NFC, Wireless module.
It interfaces through USB communication.
• Information
- Part Code : JC92–02735A
- Part Name : PBA-USB HUB
• Connection
1 MAIN Board I/F Connector
2 OPE Unit I/F Connector
3 Power Input Connector
4 OPE Unit Power
5 Speaker
6 External USB Host Slot
8 WLAN / NFC
OPE HUB PBA for new model(IR UI)

OPE Hub PBA is used to interface with Main PBA, UI, USB Memory stick, NFC, Wireless module.
It interfaces through USB communication.

• Information
- Part Name : PBA-OPE HUB
• Connection
1 MAIN Board USB I/F
2 Reset & Speaker I/F
3 OPE LVDS I/F
4 Main Borad Power I/F
5 Main Borad LVDS I/F
6 Speaker
7 Keyborad
9 WLAN / NFC
10 WLAN / NFC

2.12.3. SMPS (Switching Mode Power Supply) PBA (Type5)
NOTE
• MX K7 LX series have 2 SMPS boards. (Type5 x 1 EA , Type3R x 1 EA)
• MX K7 GX series have 3 SMPS boards. (Type5 x 1 EA , Type4 x 1 EA , Type3R x 1 EA)
SMPS board supplies electric power to the main board and other boards. The voltage provided includes +5V, and +24V from
a 110V/220V power input. It has safety protection modes for over current and overload.
• Specification
General Input / Output Voltage
- AC 110V (110V ~ 127V)
- AC 220V (220V ~ 240V)
- Input Current:8.0A (110V) / 5.0A (220V)
- Output Power: 275W
▪ DC 5V : 35W / DC 24V : 240W
• Information
110V 220V
Part Code JC44-00093D JC44-00100D
PBA Name PSPN2-TYPE5-V1 PSPN2-TYPE5-V2
• Connection
1 INPUT_AC
2 OUTPUT_DC +24V1/2/3/4 (to Main PBA)
3 24V on/off
4 OUTPUT_DC +5V1/2 (to Main PBA)

• Input / Output connector

- AC Input connector (CN1)
PIN Assign PIN NO Description
1 AC_L
AC Input
2 AC_N
- DC Output connector (CN2)

1 +5V1 Power
2 GND 5V Ground
3 +5V2 Power
4 GND 5V Ground
- DC Output Connector (CN3)

1 +24V1 Power
2 GND 24V Ground
3 +24V2 Power
4 GND 24V Ground
5 +24V3 Power
6 GND 24V Ground
7 +24V4 Power
8 GND 24V Ground
- Signal Connector (CN4)

1 GND
2 24V On_Off Active Low
3 GND

2.12.4. SMPS (Switching Mode Power Supply) PBA (Type3R)
NOTE
• Specification
- AC 110V (110V ~ 127V)
- AC 220V (220V ~ 240V)
- Input Current : 10A (110V) / 8A (220V)
▪ DC 5V : 20W / DC 24V : 144W
• Information
110V 220V
Part Code JC44-00222B JC44-00223B
PBA Name PSPN2 -TYPE3R-V1 PSPN2-TYPE3R-V2
• Connection
1 INPUT_AC Power (CON1)
2 Fuser AC Power (CON2) / Not available for MX7
3 OUTPUT_DC +24V1/2/3 and +5V1 (CON3)
4 Signal_24V on/off, Relay on, Fuser on (CON4)


- AC Input connector (CON1)
1 AC_L
AC Input
2 AC_N
- Fuser AC Power Connector (CON2) - N/A for MX7

1 AC_L
AC Input for Fuser
2 AC_N
- DC Output Connector (CON3)

1 +5V1 DC 5V
2 GND Ground
3 +24V1 DC 24V
4 GND Ground
5 +24V2 DC 24V
6 GND Ground
7 +24V3 DC 24V
- Signal Connector (CON4)

1 GND Ground
2 24V on/off Active Low
3 Relay on Active High
4 24Vs Bias for photo triac, relay
5 Fuser on Active High

2.12.5. SMPS (Switching Mode Power Supply) PBA (Type4)
NOTE
• Specification
- AC 110V (110V ~ 127V)
- AC 220V (220V ~ 240V)
- Input Current : 6.3A (110V) / 5A (220V)
▪ DC 5V : 25W / DC 24V : 180W
• Information
110V 220V
Part Code JC44-00091D JC44-00092D
PBA Name PSPN2 -TYPE4-V1 PSPN2-TYPE4-V2
• Connection
1 INPUT_AC
2 OUTPUT_DC +24V1/2/3 and DC +5V 1/2 (to Main PBA)
3 24V on/off


- AC Input connector (CN1)
1 AC_L
AC Input
2 AC_N
- DC Output Connector (CN4)

1 +5V1 Power
2 GND 5V Ground
3 +5V2 Power
4 GND 5V Ground
5 +24V1 Power
6 GND 24V Ground
7 +24V2 Power
8 GND 24V Ground
9 +24V3 Power
- Signal Connector (CN3)

1 GND
2 24V On_Off Active Low
3 GND

2.12.6. Fuser Drive Board (FDB)
This board supplies the voltage to Fuser AC, Heater, Main board.
• Information
110V 220V
Part Code JC44-00235A JC44-00236A
PBA Name X7600/K7600 FDB-V1 X7600/K7600 FDB-V2
• Connection
1 Option Heater
2 Fuser Lamp
3 FDB I/F
4 SMPS (Type 5)
5 Main Switch
6 AC Inlet
7 Option Heater Switch
8 SMPS (Type4)
9/10 Inductor

2.12.7. HVPS (High Voltage Power Supply) board
HVPS board generates 5 high-voltage channels, which include FUSER, SAW, DEV AC/DC, THV+/-, MHV.
• Specification
1) Input Voltage : DC 24V, 3.3V
2) Output Voltage :
- MHV : -1387V
- DEV DC : -603V, AC : Vpp 960V
- THV+(CC/CV) : 25.6uA/2045V, THV- : -1295V
- SAW : -990V
- FUSER : 400V
• Information
- Part Name : HVPS
• Connection
CN1
PIN Assign PIN Name Description
1 DETECT
2 24V Input Voltage
3 24V Input Voltage
4 ADC_HVPS_24 Signal
5 24V Input Voltage
6 GND GND
7 GND GND
8 3.3V Input Voltage
9 GND GND

CN1
10 OPEN
11 READ_THV+_CV Output Voltage
12 PWM_THV+_CV PWM signal
13 PWM_MHV PWM signal
14 THV+_CV_SELECT Input Voltage
15 PWM_SAW PWM signal
16 READ_THV Output Voltage
17 PWM_THV- PWM signal
18 nEN_DEVE nEN signal
19 PWM_FUSER_BIAS PWM signal
20 PWM_DEV_DC PWM signal
21 PWM_THV+_CC PWM signal
22 PWM_DEV_Vpp PWM signal
23 PWM_DEV_AC PWM signal
24 DETECT

CN2 MHV / SAW Output Voltage
CN3 THV + / - Output Voltage
CN4 DEV AC/DC Output Voltage
CN5 FUSER Output Voltage

2.12.8. Eraser PBA
Eraser PBA has one LED. This LED is used for erasing the negative charges on the surface of the drum after printing.
• Information
• Part Code : JC92–02747A
• Part Name : PBA-ERASER
2.12.9. Fuser PBA
The Fuser PBA includes CRU memory for Fuser Unit Life Cycle counting. It also provides a connection interface for
the pressure sensor.
• Connection
1 Fuser EEPROM, Pressure Sensor I/F
2 Pressure Sensor (Not used)
• Information
- Part Name : PBA-FUSER

2.12.10. Waste Sensor PBA
The Waste Sensor PBA detects the waste toner level inside the waste toner container.
• Information
• Part Code : JC92–02471A
• Part Name : WASTE SENSOR RX
2.12.11. Paper Size sensor PBA
The paper size sensor PBA is used for sensing paper size of tray.
• Information
• Part Code : JC92-02622A
• Part Name : PBA-PAPER SIZE SENSOR

2.12.12. OPE Unit
NOTE
The OPE Unit for previous model is not compatible with new model(IR UI). When replacing the OPE Unit, be careful not to
be replaced with incompatible one.
OPE Unit for previous model

The OPE Unit consists of a Quad core, Cortex-A7 SOC(A31s -1.2GHz), 2GB DDR3 SDRAM, 4GB eMMCmemory,
10.1 inch WSVGA(1024X600) touch LCD .
The A31s is used to interface with users through the touch screen.
The A31s has a GPU(SGX544MP2), which supports the Graphic Accelation for better UI.
• Information
- Part Code : JC97-04499C
- Part Name : OPE
• Connection
1 USB host in OPE Hub PBA
2 Input POWER Connector in OPE Hub PBA
3 USB host for external USB-keyboard option
OPE Unit for new model(IR UI)

The OPE Unit is IR TSP type, consist of infrared ray LED, light guide, 9.7 inch WSVGA(960x600) touch LCD.
The IR type is used to interface with users through the touch screen.
The IR type has a speaker, which supports independent sound.

• Information
- Part Name : OPE
• Connection
1 Micro HDMI Interface
2 Power Interface

2.12.13. DSDF PBA
The DSDF PBA uses the R5F562TAEDFP(100MHzMain Clock) for controlling the DSDF unit and interfaces with the
main board through UART.
It has three Motor Driver ICs to control the BLDC/Step motor and controls 1 BLDC motor, 2 step motors, 1 clutch, 1,
Fan , and 11 sensors.
• Information
- Part Name : PBA-DSDF
• Connection
1 Scan Position1/2, Regi, Feed Sensor
2 Pickup, Paper Detect, Cover Open Sensor
3 BLDC Motor, Regi Motor, Pickup Clutch
4 Exit Sensor, Fan
5 Paper Length1/2, Width Sensor
6 Scan Joint PBA

2.12.14. Scan Joint PBA
The Scan Joint PBA has a Bipolar Step Motor driving IC and interfaces with the WLED, APS sensor1,2, Cover open
sensor1,2, Home position sensor and main board.
It also functions as the relay board to interface with the ADF I/F, Power board.
• Information
- Part Name : PBA-SCAN JOINT
• Connection
1 WLED IF PBA
2 MAIN PBA
3 Cover Open2, Home Sensor
4 RADF/DSDF PBA
5 Platen Motor

2.12.15. CCDM PBA
This is the CCD board used in the Scanner unit. The function of this board is to convert the reflected light from an original
document to electrical signals. It includes the CCD, ADC, Logic IC, etc. The CCD converts the reflected light from an
original document to three-color analog signals; red, green, blue. ADC converts each analog signal to digital. And for high
speed data transmission, the digital data signal is converted to LVDS format with serialization.
• Information
- Part Name : PBA-CCDM
• Connection
1 MAIN PBA

2.12.16. WLED IF PBA
WLED IF PBA interfaces with the WLED and sensors inside the platen unit.
• Information
- Part Name : PBA-WLED IF
• Connection
1 APS1, APS2 Sensor
2 Cover Open1 Sensor
3 SCAN JOINT PBA
4 WLED PBA
2.12.17. WLED PBA
WLED PBA consists of two WLED used as scanner light.
• Information
- Part Name : PBA-WLED
• Connection
1 WLED IF PBA

2.13. Double Cassette Feeder(DCF) Unit
1) Paper Feeding System (Rollers and Functions)
Tray No. Roller No. Roller Name Function

3 R1 Pick-up roller Transports paper from paper stack.
3 R2 Forward roller Transports one sheet of paper to Pre feed roller.
3 R3 Reverse(Separation) Assure paper transportation one by one.
roller
3 R4 Pre feed roller Transports paper to Feed roller.
3 R5 Idle roller Makes paper transportation smooth.
3/4 R6 Feed roller Transports one sheet of paper to the basic machine.
3/4 R7 Idle roller Makes paper transportation smooth.
roller
4 R11 Prefeed roller Transports paper to Feed roller.

2) Paper Path

3) Electrical Parts Location / Parts Code / Connection Information
Tray No Ref. Description Parts number DC controller PCB

3 S1 Pickup No-paper Sensor 0604-001393 CN502-1 to 3
3 S2 Pickup Level Sensor 0604-001393 CN502-4 to 6
3 S3 Pre feed Sensor 0604-001490 CN502-7 to 9
3/4 S4 Path Sensor 0604-001393 CN502-10 to 12
4 S7 Prefeed Sensor 0604-001490 CN501-7 to 9
3 S8 Paper size sensor JC32-00013A CN802-2 to 4
4 S9 Paper size sensor JC32-00013A CN802-6 to 8
3 S10 Tray3 lock home sensor 0604-001393 CN701-3 to 5
4 S11 Tray4 lock home sensor 0604-001393 CN701-6 to 8
3/4 SW1 Side Door Open Switch JC39-02268A CN601-9 to 10
3 M1 Tray3 Pickup Motor JC31-00009C CN601-1 to 4
4 M2 Tray4 Pickup Motor JC31-00009C CN801-1 to 4
3/4 M3 Tray Feed Motor JC31-00177A CN601-5 to 8
3 M4 Tray3 lock motor JC31-00078A CN902-2 to 3
4 M5 Tray4 lock motor JC31-00078A CN902-4 to 5

4) Sensors and Functions
Tray No Ref. Description Function

3 S1 Pickup No-paper Sensor Detects paper empty in tray3.
3 S2 Pickup Level Sensor Detects upper limit of lifting-up of tray3.
3 S3 Pre-feed Sensor Detects paper between R2-R3 and R4-5.
3/4 S4 Path Sensor Detects paper passing through R6-R7.
4 S5 Pickup No-paper Sensor Detects paper empty in tray4.
4 S6 Pickup Level Sensor Detects upper limit of lifting-up in tray4.
4 S7 Pre-feed Sensor Detects paper between R9-R10 and
R11-12.
3 S8 Paper size sensor Detects tray insertion and paper size in
tray3.
4 S9 Paper size sensor Detects tray insertion and paper size in
tray4.
3 S10 Tray3 lock home sensor Detects home position of Tray3 locking
unit.
4 S11 Tray4 lock home sensor Detects home position of Tray4 locking
unit.
3/4 SW1 Side Door Open Switch Detects opening of right cover.

5) Block Diagram
The DCF board controls all functions for DCF Assy. It consists of CPU, Motor drive IC.
The Micom in the board receives the information from the paper size sensor, Pickup No-paper Sensor, Pickup Level Sensor,
Prefeed sensor etc. and communicates with the copier main board through the UART.
When being received the print job command from the interface connector (CN301) through UART, DCF board drives the
feed motor and pick up motor to pick up a paper.
This board has 2 LEDs. The lower LED is for checking 3.3V power supply and the upper LED is checking the micom
operation.

6) PBA Connection
Connector Number Item Number Connection

CN902 1 DC MOTOR I/F
CN801 2 PICK_LIFT4 MOTOR I/F
CN601 3 PICK_LIFT3 & FEED MOTOR I/F
CN701 4 LOCKMOT/MOT LIFT/LCT HOME I/F
CN1001 5 TOPCOVER_OPEN INTERLOCK
CN301 6 MAIN I/F
CN401 7 UART DEBUG I/F
CN402 8 E1 JTAG DEBUG I/F
CN802 9 SENSOR PAPER SIZE
CN901 10 HCF INNER DRAWER
CN302 11 SUB I/F
CN1101 12 BBP I/F
CN501 13 T4 SENSOR
CN502 14 T3 SENSOR

2.14. High Capacity Feeder(HCF) Unit
Tray No. Roller No. Roller Name Function

roller
3 R4 Pre feed roller Transports paper to Feed roller.
3 R6 Feed roller Transports one sheet of paper to the basic machine.

2) Paper Path

Tray No Ref. Description Parts number DC controller PCB

3 S3 Pre feed Sensor 0604-001490 CN502-7 to 9
3 S4 Path Sensor 0604-001393 CN502-10 to 12
3 S5 Tray Insertion Sensor 0604-001393 CN901-15 to 17
3 S6 Knockup Home Sensor 0604-001393 CN901-7
3 S7 Main Tray Level Sensor1 0604-001393 CN901-4
3 S8 Main Tray Level Sensor2 0604-001393 CN901-5
3 S9 Shift Tray No-paper Sensor 0604-001393 CN901-2
3 S10 Shift Tray Level Sensor1 0604-001393 CN901-10
3 S11 Shift Tray Level Sensor2 0604-001393 CN901-11
3 S12 Shift Plate Home Sensor 0604-001393 CN901-3
3 S13 Shift Plate End Sensor 0604-001393 CN901-6
3 S14 Solenoid Home Sensor 0604-001393 CN901-8
3 SW1 Side Door Open Switch JC39-02279A CN601-9 to 10
3 M1 Tray Pickup Motor JC31-00009C CN601-1 to 4
3 M2 Tray Feed Motor JC31-00177A CN601-5 to 8
3 M3 Tray Liftup Motor JC31-00109A CN902-1 to 2
3 M4 Paper Shift Motor JC31-00125A CN902-4 to 5
3 A1 Solenoid JC33-00031B CN901-12 to 14

Tray No Ref. Description DC controller PCB

3 S1 Pickup No-paper Sensor Detects paper empty in main tray.
3 S2 Pickup Level Sensor Detects upper limit of lifting-up of main
tray.
3 S3 Pre-feed Sensor Detects paper between R2-R3 and R4-5.
3 S4 Path Sensor Detects paper passing through R6-R7.
3 S5 Tray Insertion Sensor Detects tray insertion.
3 S6 Knock-up Home Sensor Detects home position of knock-plate.
3 S7 Main Tray Level Sensor1 Detects paper residual paper quantity in
main tray.
3 S8 Main Tray Level Sensor2 Detects paper residual paper quantity in
main tray.
3 S9 Shift Tray No-paper Sensor Detects paper empty in sub tray.
3 S10 Shift Tray Level Sensor1 Detects paper residual quantity in sub
tray.
3 S11 Shift Tray Level Sensor2 Detects paper residual quantity in sin
tray.
3 S12 Shift Plate Home Sensor Detects home position of shift plate.
3 S13 Shift Plate End Sensor Detects end position of shift plate
3 S14 Solenoid Home Sensor Detects home position of solenoid
3 SW1 Side Door Open Switch Detects opening of solenoid.

5) Block Diagram
The HCF board controls all functions for HCF Assy. It consists of CPU, Motor drive IC.
The Micom in the board receives the information from the Pickup No-paper Sensor, Pickup Level Sensor, Prefeed sensor
etc. and communicates with the copier main board through the UART.
When being received the print job command from the interface connector (CN301) through UART, HCF board drives the
feed motor and pick up motor to pick up a paper.
This board has 2 LEDs. The lower LED is for checking 3.3V power supply and the upper LED is checking the micom
operation.

6) PBA Connection

CN301 6 MAIN I/F
CN302 11 SUB I/F
CN1101 12 BBP I/F
CN501 13 T4 SENSOR
CN502 14 T3 SENSOR

2.15. High Capacity Feeder Side Unit (Large Cassette Tray Unit)
Roller No. Roller Name Function

R1 Pick-up roller Transports paper from paper stack.
R2 Forward roller Transports one sheet of paper to Pre feed roller.
R3 Reverse(Separation) Assure paper transportation one by one.
roller
R4 Idle roller Transports paper to Feed roller.
R5 Feed roller Makes paper transportation smooth.

2) Paper Path

Ref. Description Parts number DC controller PCB

S1 Pickup No-paper Sensor 0604-001393 CN502-1 to 3
S2 Pickup Level Sensor 0604-001393 CN502-4 to 6
S3 Pre feed Sensor 0604-001490 CN502-7 to 9
S4 Paper Level Sensor1 0604-001393 CN501-4 to 6
S5 Paper Level Sensor2 0604-001393 CN501-1 to 3
S6 Install Sensor1 0604-001393 CN701-3 to 5

Ref. Description Parts number DC controller PCB

S7 Install Sensor2 0604-001393 CN701-6 to 8
SW1 Top Door Open Switch JC39-02346A CN1001-1 to 2
M1 Tray Pickup Motor JC31-00009C CN601-1 to 4
M2 Tray Feed Motor JC31-00163A CN601-5 to 8
M3 Tray Liftup Motor JC31-00109A CN701-1 to 2

Ref. Description DC controller PCB

S1 Pickup No-paper Sensor Detects paper empty in tray.
S2 Pickup Level Sensor Detects upper limit of lifting-up of tray.
S3 Prefeed Sensor Detects paper between R2-R3 and R4-5.
S4 Paper Level Sensor1 Detects paper residual paper quantity in tray.
S5 Paper Level Sensor2 Detects paper residual paper quantity in tray.
S6 Install Sensor1 Detects installation of SL-HCF501S to the basic
machine.

Ref. Description DC controller PCB

S7 Install Sensor2 Detects installation of SL-HCF501S to the basic
machine.
SW1 Top Door Open Switch Detects opening of the top door
M1 Tray Pickup Motor Drives pick up roller.
M2 Tray Feed Motor Drives Feed Roller
M3 Tray Liftup Motor Lifts up the tray.

5) Block Diagram
The LCT board controls all functions for LCT Assy. It consists of CPU, Motor drive IC.
The Micom in the board receives the information from the Pickup No-paper Sensor, Pickup Level Sensor, Prefeed sensor
etc. and communicates with the copier main board through the UART.
When being received the print job command from the interface connector (CN301) through UART, LCT board drives the
Tray feed motor and Tray pickup motor to pick up a paper.
This board has 2 LEDs. The right LED is for checking 3.3V power supply and the left LED is checking the Micom operation.

6) PBA Connection

CN301 6 MAIN I/F
CN302 11 SUB I/F
CN1101 12 BBP I/F
CN501 13 T4 SENSOR
CN502 14 T3 SENSOR

3.1. Precautions when replacing parts
3.1.1. Precautions when assembling and disassembling
• Use only approved Samsung spare parts. Ensure that part number, product name, any voltage, current or temperature
rating are correct. Failure to do so could result in damage to the machine, circuit overload, fire or electric shock.
• Do not make any unauthorized changes or additions to the printer, these could cause the printer to malfunction and
create electric shock or fire hazards.
• Take care when dismantling the unit to note where each screw goes. There are 19 different screws. Use of the wrong
screw could lead to system failure, short circuit or electric shock.
• Do not disassemble the LSU unit. Once it is disassembled dust is admitted to the mirror chamber and will seriously
degrade print quality. There are no serviceable parts inside.
• Regularly check the condition of the power cord, plug and socket. Bad contacts could lead to overheating and fire.
Damaged cables could lead to electric shock or unit malfunction.
3.1.2. Precautions when handling PBA
Static electricity can damage a PBA, always used approved anti-static precautions when handling or storing a PBA.
• Precautions when moving and storing PBA

1) Please keep PBA in a conductive case, anti-static bag, or wrapped in aluminum foil.
2) Do not store a PBA where it is exposed to direct sunlight.
• Precautions when replacing PBA

1) Disconnect power connectors first, before disconnecting other cables.
2) Do not touch any soldered connections, connector terminals or other electronic parts when handling insulated parts.
• Precautions when checking PBA

1) Before touching a PBA, please touch other grounded areas of the chassis to discharge any static electrical charge
on the body.
2) Take care not to touch the PBA with your bare hands or metal objects as you could create a short circuit or get an
electric shock. Take extra care when handling PBAs with moving parts fitted such as sensors, motors or lamps as
they may get hot.
3) Take care when fitting, or removing, screws. Look out for hidden screws. Always ensure that the correct screw is
used and always ensure that when toothed washers are removed they are refitted in their original positions.

3.1.3. Releasing Plastic Latches
Many of the parts are held in place with plastic latches. The latches break easily; release them carefully.
To remove such parts, press the hook end of the latch away from the part to which it is latched.

3.2. Maintenance
3.2.1. Machine Cleaning for maintenance
3.2.1.1. Cleaning the scan glass
1. Open the DSDF Unit. 2. Clean the scan glass[A] by using a soft cloth.

3.2.1.2. Cleaning the DSDF white bar_CIS
1. Open the DSDF Unit. 2. Clean the DSDF white bar and CIS by using a soft cloth.

3.2.1.3. Cleaning the paper dust stick
The paper dust stick will need to be cleaned after a specified 3. Pull the paper dust stick out.
number of paper is printed out. When the message that
demands you to clean the paper dust stick appears, you have
to clean the paper dust stick. Follow the cleaning procedure
below.
1. Open the front door.
4. Remove the paper dust.
2. Remove the waste toner container.
5. Insert the paper dust stick back.

6. Insert the waste toner container until it locks in place. 7. Close the front door. Ensure that the cover is securely
closed.
If the message still appears, do step 3 and 4 again.

3.2.2. Replacing the maintenance part
3.2.2.1. Development(Deve) unit
1. Open the front cover. 4. Pull down the deve locking lever. Then, loosen 1 screw.
2. Release the waste toner container while pushing both

hooks.
5. Grip the handle and remove the drum unit.
NOTE
Do not grip the bulging part when removing the drum

unit.
3. Open the side cover.

6. Release the bracket after 3 screws. Unplug the 9. Release 6 hooks and open the cover.
connector.
10. Pour the developer powder to the deve unit
7. Hold the grip point of deve unit with hand and remove NOTE
the deve unit.
• Before filling the developer, shake the silver pack
NOTE about 3 times for preventing from toner scattering.
Do not grip the bulging part when removing the deve • When filling the developer, intermittently, lean back
unit. & shake the deve unit weakly from side to side to
avoid overflow.
11. Reassemble the deve unit and drum unit in reverse

order of disassembly.
8. Unpack the new deve unit box and check the
components. (deve unit & silver pack)

3.2.2.2. Fuser Unit
1. Open the side cover. 3. Pull out the fuser unit.
2. Remove 4 screws.
CAUTION
The temperature gets high in the vicinity of the fuser

unit. When replacing it, you may get burned. Before
replacing it, make sure that fuser unit has cooled.

3.2.2.3. Paper Transfer Belt
1. Open the side cover. 4. Remove both screws of the PTB Assy and stand both
levers to the direction of arrow.
2. Remove 1 screw and the connector cover.
3. Unplug the PTB connector.
5. Remove the PTB Assy.

3.2.2.4. Pick-Up_Separation_Forward roller
1. Remove 2 cassettes. 2. Lift small tap, remove the pick up / reverse/ forward
roller.
NOTE
When replacing these rollers, it is recommended that

you replace all three rollers at the same time.

3.2.2.5. MP Pick Up_Reverse_Forward roller
1. Open the MP Tray. Remove the cover[A]. 3. Lift small tap, remove the pick up/ reverse/ forward
roller.
2. Remove the cover[B].

NOTE
When replacing these rollers, it is recommended that

you replace all three rollers at the same time.

3.2.2.6. DSDF Pick-up roller Assy (LX model)
1. Open the DSDF-open cover. 3. Remove the E-ring and Bush. Then, release the DSDF
pick up roller Assy.
2. Remove 6 screws. Then release the DSDF pick up

cover.

3.2.2.7. DSDF reverse roller (LX model)
1. Open the DSDF unit. Remove 1 screw from the bottom 4. Remove the DSDF front cover.
of the DSDF unit.
5. Remove 4 screws. Then, release the pick up module.

2. Open the DSDF-open cover. Remove 2 screws.
6. Remove the reverse roller cover.

3. Release the DSDF link.

7. Release the reverse roller Assy.

3.2.2.8. DSDF Pick-up roller Assy (GX model)
1. Open the DSDF-open cover. 3. Remove 2 Mold E-Rings.
4. Remove 2 springs. Then, release the DSDF pick up

roller Assy while pulling it to the left.
2. Remove 4 screws. Then, release the DSDF pick up

cover.

3.2.2.9. DSDF reverse roller Assy (GX model)
1. Open the DSDF-open cover. 4. Release the roller cover locking.
5. Pull and release the roller cover while lifting the stacker
up.
2. Remove 4 screws.
3. Pull the pick up module to the front and unplug the

connector while lifting up its front.
6. Remove the Mold E-ring.

7. Pull the reverse roller Assy to the left until the pin is
shown. Then, lift up and release it.

3.3. Replacing the main SVC part
3.3.1. Left Cover
1. Remove 2 cassettes. 3. Remove 6 Screw-caps and 7 screws.
2. Remove the Left-dummy cover. 4. Remove the left cover.
3.3.2. Rear Cover
1. Remove 12 screw-caps and 12 screws.

3.3.3. LSU
1. Remove the left cover.(Refer to 3.3.1.) 3. Unplug the LSU harness from the left. Remove the
LSU.
2. Remove 2 screws.
3.3.4. Temperature_Humidity sensor
1. Remove the left cover. (Refer to 3.3.1.)
2. Unplug the sensor connector. Then release the

temperature-humidity sensor.

3.3.5. Reservoir Assy
1. Remove the toner cartridge. 5. Remove 1 screw securing the Guide-Toner.
2. Remove the Developer unit. (Refer to 3.2.2.1.)
3. Remove the LSU. (Refer to 3.3.3.)
6. Pull out the Guide-Toner slightly.
4. Remove 1 screws. And unplug the Reservoir Assy

connector.
7. Remove the Reservoir Assy.

3.3.6. OPE Unit
1. Open the side cover. 4. Unplug the OPE cables from the OPE Hub board.
2. Remove 2 screw-caps and 2 screws. Then remove the 5. Remove 2 screws securing the OPE Hinge.
front-top left cover.
6. Release the OPE Assy.

3. Remove 2 screw-caps and 2 screws. Then remove the
front-top right cover.

3.3.7. Main board
1. Remove the rear cover. (Refer to 3.3.2.) 4. Install the new main board and insert the MSOK.
2. Unplug all connectors on the main board.
3. Remove 9 screws. And release the main board.
3.3.8. HVPS board
1. Remove 7 screw-caps and 7 screws. Then remove the 2. Unplug all harness from the HVPS board. Remove 5
Lower-Rear cover. screws. And release the HVPS board.

3.3.9. SMPS board
NOTE
• LX model has 2 SMPS boards.
• GX model has 3 SMPS boards.
3.3.9.1. SMPS board 1
1. Remove 7 screw-caps and 7 screws. Then remove the 3. Unplug all connectors. Remove 4 screws. And release
Lower-Rear cover. the SMPS board 1.
2. Loosen 4 screws. Pull the SMPS cover to the right and

release it.

Lower-Rear cover. the SMPS board 2.

release it.


2. Remove 3 screws. Then remove the shield-SMPS sub
NOTE
upper.
This SMPS board is installed for only GX model.
1. Remove 11 screw-cap and 11 screws. Then remove

the rear cover.
3. Unplug all connectors. Remove 4 screws. And release

the SMPS board 3.

3.3.10. FDB (Fuser Drive Board)
Lower-Rear cover. the FDB.

release it.

3.3.11. SMPS Fan
1. Remove the rear cover. (Refer to 3.3.2.) 2. Remove 1 screw. Unplug the fan connector. And,
release the SMPS fan.
3.3.12. Main Drive Unit
1. Remove the rear cover. (Refer to 3.3.2.)
2. Unplug the motor connector. Remove 3 screws. And

release the Main Drive unit.

3.3.13. Inductor unit
2. Unplug all harness from SMPS board1,2 and FDB.

Remove 2 screws. And release the power board shield.
3. Remove 2 screws. Unplug the harness. And release

the Inductor unit.

3.3.14. Auto-Closing unit
1. Remove the cassette. 5. Release the Auto Closing unit after removing 2 screws.
3. Remove the power board shield. (Refer to 3.3.13.)
4. Release the CST rail cover after removing 1 screw.

3.3.15. Pick-up Drive unit 1
1. Remove the rear cover. (Refer to 3.3.2.) 3. Unplug the motor connector. Remove 3 screws. And
release the Pick-up Drive unit 1.
2. Remove the power board shield. (Refer to 3.3.13.)
3.3.16. Pick-up Drive unit 2

release the Pick-up Drive unit 2.

3.3.17. Regi Drive Unit
release the Regi Drive Unit.
3.3.18. Feed Drive Unit

release the Feed Drive Unit.

3.3.19. Fuser Fan
1. Remove the rear cover. (Refer to 3.3.2.) 3. Separate the Fuser Fan Duct and release the fan.
2. Release the harness from the duct. Remove 3 screws.

And release the Fuser Fan duct after unplugging the
fan connector.

3.3.20. Fuser_Exit Drive unit
release the Fuser/Exit Drive unit.
2. Remove the Fuser Fan duct. (Refer to 3.3.19.)
3.3.21. Side Door open sensor
2. Remove the Fuser/Exit Drive unit. (Refer to 3.3.20.)
3. Unplug the connector. Remove 1 screw. And release

the side door open sensor.

3.3.22. Deve Fan
1. Remove the drum unit. (Refer to 3.2.2.1.) 6. Remove the Deve Fan duct.
2. Remove the left cover. (Refer to 3.3.1.)
4. Remove 1 screw. Unplug the connector.
7. Release the Deve fan from the Deve Fan duct.
5. Open the side cover. Then push and release the hook
of the Deve fan.

3.3.23. Auto Size sensor
1. Remove 2 cassettes. 2. Unplug the sensor connector. Remove 2 screws. And

release the auto size sensor.

3.3.24. Inner cover
1. Open the side cover. 4. Remove the cleaner.
2. Remove 2 screw-caps and 2 screws. Then remove the 5. Remove 7 screws securing the Inner Cover.
front-top left cover.
6. Remove 2 screw-caps and 2 screws. Then release the

3. Remove 2 screw-caps and 2 screws. Then remove the Exit Tray.

7. Remove the inner cover while lifting the Exit Tray.

3.3.25. Front Cover Open sensor
1. Remove the Inner cover.(Refe to 3.3.24.)
2. Remove 1 screw. Unplug the sensor connector. And,

release the Front Cover Open sensor.

3.3.26. Waste Toner Container sensor
1. Remove the inner cover. (Refer to 3.3.24.)
2. Release the corresponding sensor.
• [A] : Waste Toner Level sensor
• [B] : Waste Toner Container Detect sensor
3.3.27. HDD (Hard Disk Drive)
1. Remove 2 screw-caps and 2 screws. Then remove the 2. Remove 2 screw-caps and 2 screws. Then remove the
front-top left cover. Exit Tray.
3. Release the HDD cover after removing 4 screws.

4. Remove 4 screws. Unplug the HDD cable. And release

the HDD with its holder.

3.3.28. High Voltage Terminal
1. Remove the rear cover. (Refer to 3.3.1.) 5. Open the side cover. Remove 3 screws. And release
the high voltage terminal.
2. Remove the Main Drive Unit. (Refer to 3.3.12.)
3. Release the harness from its holder.
4. Unplug the connector from the HVPS board.

3.3.29. Side Unit
1. Remove 4 screw-caps and 4 screws. Then release the 3. Release the right stopper.
Right-Rear cover[A].
4. Release the left stopper.

2. Unplug the side unit connector.
5. Release the side unit.

3.3.29.1. Fuser-Out Sensor
1. Remove the Side Unit. (Refer to 3.3.29.) 3. Remove 1 screw. Then turn up the sensor holder.
2. Remove both screws. Then turn up the Cover-Side Exit.
4. Unplug the sensor connector. Then release the

Fuser-Out sensor from its holder.

3.3.29.2. Feed 2 sensor
1. Remove the Side Unit. (Refer to 3.3.29.) 5. Remove 2 screws.
2. Remove 4 screws.
6. Remove the Guide-Take Away Lower.

3. Remove 3 screws. Then remove the Cover-Harness
Lower[A].
7. Unplug the sensor connector. Remove 1 screw. And

then remove the Guide-Take Away Upper.
4. Remove 2 screws.

8. Unplug the sensor connector. Then release the Feed

2 sensor.

3.3.29.3. MP Unit
1. Remove the Side Unit. (Refer to 3.3.29.) 5. Release and place the PTB Assy as shown below. Then
remove 3 screws.
2. Remove the Guide-Take Away Lower and Upper.
(Refer to 3.3.29.2)
3. Remove both E-ring and Bush.
6. Remove the Guide-Duplex Lower.
7. Remove 1 screw.
4. Remove the Shaft.

8. Remove 4 screws. 10. Release the MP Tray Linker.
11. Release the MP Unit.
9. Unplug the sensor connector.

3.3.29.4. MP empty sensor
1. Remove the MP Unit. (Refer to 3.3.29.3.) 2. Unplug the connector. Then release the MP empty
sensor.
3.3.29.5. MP paper length sensor
1. Remove the MP Unit. (Refer to 3.3.29.3.) 3. Unplug the connector. Then remove the MP paper
length sensor.
2. Remove the MP Tray Upper.

3.3.29.6. MP solenoid
1. Remove the MP Unit. (Refer to 3.3.29.3.) 4. Remove 7 screws. Then release the Frame-Base.
2. Remove 2 screws. Remove 3 gears. And then release

the MP tray.
5. Remove 2 screws. Then release the MP solenoid.
3. Remove 2 screws. Remove 3 E-rings and Bushes. And

then release the Bracket-Rear.

3.3.30. Pick-Up Unit 2
1. Remove the Side Unit. (Refer to 3.3.29.)
2. Remove 3 screws. Unplug the connector. And then

release the Pick-Up Unit 2.
3.3.30.1. Pick up Lifting sensor and Empty sensor
1. Remove the Pick-Up Unit 2. (Refer to 3.3.30.)
2. Unplug the corresponding sensor connector. Then

remove the sensor.
• [A] : Empty sensor
• [B] : Pick up Lifting sensor

3.3.30.2. Pre-Feed sensor 2
2. Open the Guide-Pick up. Then remove the Pre-Feed

sensor 2.

3.3.31. Pick-Up Unit 1
1. Side Unit . (3.3.29 )
2. Pick-Up Unit 2 . (3.3.30 )
3. 3 , Pick-Up Unit 1 .
3.3.31.1. Pick-Up Lifting sensor and Empty sensor
2. Unplug the corresponding sensor connector. Then

remove the sensor.
• [A] : Empty sensor
• [B] : Pick up Lifting sensor

3.3.31.2. Pre-Feed sensor 1
1. Remove the Pick-Up Unit 1. (Refer to 3.3.31.) 3. Release the sensor from its holder.
2. Remove 5 screws. Then remove the bracket.
3.3.32. Regi Unit
1. Remove the Side Unit. (Refer to 3.3.29.) 3. Pull out the Regi Unit and then unplug the connector.
2. Remove 2 screws and gear cover.

3.3.32.1. Regi sensor
1. Remove the Regi. Unit. (Refer to 3.3.32) 4. Remove the Regi sensor.
2. Remove 2 screws. Then remove the Guide Regi upper.
3. Remove 1 screw.

3.3.33. Exit Unit
1. Remove the Side Unit. (Refer to 3.3.29.) 4. Unplug the connector. Then release the Right-top cover.
2. Remove 2 screw-caps and 2 screws. Then remove the

5. Remove 4 screws. Then pull out the fuser unit.
3. Remove 4 screws.
6. Unplug the connector. Remove 4 screws.

7. Remove the Exit Unit while pushing the gear to the

right.
3.3.33.1. Return sensor
1. Remove the Exit Unit. (Refer to 3.3.33)
2. Unplug the sensor connector. Then remove the Return

sensor.

3.3.33.2. Duplex 1 sensor
1. Remove the Exit Unit. (Refer to 3.3.33.) 3. Unplug the connector. Then release the Duplex 1
sensor.
2. Remove 2 screws. Then turn up the sensor holder.
3.3.33.3. Exit 1 Bin Full sensor
1. Remove the Exit Unit. (Refer to 3.3.33.)
2. Unplug the sensor connector. Then release the Exit 1

Bin Full sensor.

3.3.33.4. Exit Gate Solenoid
1. Remove the Exit Unit. (Refer to 3.3.33.) 3. Remove 2 screws. Then remove the Exit Gate
solenoid[A].
2. Remove the E-ring. Then remove the gear.

3.3.34. DSDF Unit for LX model
1. Remove the rear cover. 5. Open the DSDF unit. Remove 2 screws.
2. Remove 1 screw. Unplug the DSDF harness from the

main board.
6. Lift up and release the DSDF unit.
3. Remove the DSDF connector cover.
4. Unplug the DSDF harness from the scan joint board.
NOTE
Shading Test for DSDF Unit must be carried out, after

replacing the DSDF unit. (Refer to 4.5.5.3)

3.3.34.1. DSDF PBA
1. Open the DSDF unit. Remove 3 screws from the 3. Release the DSDF rear cover.
bottom of the DSDF. And close the DSDF unit.
2. Open DSDF-open cover. Remove 2 screws.
4. Unplug all harness on the DSDF board. Remove 4

screws. And release the DSDF PBA.

3.3.34.2. DSDF main motor
1. Open the DSDF unit. Remove 3 screws from the 4. Unplug the motor connector. Remove 1 screw securing
bottom of the DSDF. And close the DSDF unit. the harness guide.
5. Remove 5 screws. Release the DSDF main motor while

pulling the harness guide.
3. Release the DSDF rear cover.

3.3.34.3. DSDF paper length sensor
1. Open the DSDF unit. Remove 1 screw from the bottom 4. Release the DSDF front cover.
of the DSDF. And close the DSDF unit.
5. Open the DSDF unit. Remove 3 screws from the

2. Open DSDF-open cover. Remove 2 screws. bottom of the DSDF. And close the DSDF unit.
3. Release the DSDF cover-open link.

7. Release the DSDF rear cover. 10. Release the stacker.
8. Remove 1 screw. 11. Remove 6 screws. Then remove the stacker lower.
9. Unplug the stacker connector from the DSDF board.
12. Remove the paper length sensor after unplugging the

connector.

3.3.35. DSDF Unit for GX model
1. Remove the rear cover. 5. Open the DSDF unit. Remove 2 screws.
2. Remove 1 screw. Unplug the DSDF harness from the

main board.
6. Lift up and release the DSDF unit.
3. Remove the DSDF connector cover.
4. Unplug the DSDF harness from the scan joint board.
NOTE
Shading Test for DSDF Unit must be carried out, after

replacing the DSDF unit. (Refer to 4.5.5.3)

3.3.35.1. DSDF PBA
1. Open the DSDF-open cover. Then, remove 2 screws. 3. Remove the DSDF rear cover.
4. Unplug all harness on the DSDF PBA. Remove 5

screws. And release the DSDF PBA.
2. Remove 3 screws from the rear.

3.3.35.2. DSDF Stacker Sensor
1. Open the DSDF-open cover. 4. Push the lower part of the cover to release the lock by
stopper.
5. Release the Stacker Upper Assy while keep the status

of step 4.
2. Remove 4 screws.
3. Pull the pick up module to the front and unplug the

connector while lifting up its front.
6. Release the harness from the marked position. Place the

Stacker Upper Assy on the rear cover.

7. Check the connection and replace the defective sensor.

[A] : 0604-001381 , Stacker paper detection sensor
[B] : JC39-02087A , Paper width sensor
[C] : 0604-001393 , Paper Length sensor
[D] : 0604-001393 , Stacker elevator position detection
sensor

3.3.36. Scanner Unit(Platen Unit)
1. Remove the DSDF unit. 4. Remove 3 screw-caps and 3 screws. Then release the
scan-left cover.
scan-rear cover.

scan-right cover.
scan-front cover.
6. Unplug the scan cables.

7. Remove 3 screws from the left. 9. Lift up and release the platen unit.
8. Remove 2 screws from the right.

3.3.36.1. Scan Glass
1. Remove the DSDF unit. 4. Remove 3 screw-caps and 3 screws. Then release the
scan-left cover.
scan-rear cover.

scan-right cover.
scan-front cover.
6. Remove 2 screw-caps and 2 screws.

7. Remove the scan glass.

3.3.36.2. LED Lamp Module
1. Remove the scan glass. (Refer to 3.3.36.1) 4. Remove 4 screws. Then, release the LED lamp module.
2. Remove the transparent tape.
3. Unplug the flat cable.

3.3.36.3. Scan Imaging Unit
1. Remove 2 screws. And then, remove the scan glass 4. Remove the 2 screws and 2 plate springs.
holder cover.
2. Lift the scan glass up and release it.
NOTE
Do not loosen the screws marked by green X.
5. Open the connector flip. And then, unplug the flat cable.
NOTE
Be careful not to contaminate the scan glass.
3. Remove 5 screws. And then, release the CCD shield.

6. Remove and replace the Scan Imaging Unit. Check the 7. Match the value between the lens number and the scale.
lens number of the new Scan Imaging Unit. And then, assemble the 2 spring plates with screw.
8. Reassemble the CCD shield.

9. Reassemble the scan glass.

3.3.36.4. Scan Joint PBA
1. Unplug all harness. Remove 4 screws. And release the

scan joint board.

3.3.36.5. APS Sensor
1. Remove the scan glass. (Refer to 3.3.36.1) 4. Unplug the harness.
2. Remove the joint board cover.
5. Release the APS sensor after removing 2 screws.
3. Remove 1 screw.

3.3.37. ADF White Sponge
1. Open the ADF Unit. And then, detach the white sponge 3. Close the ADF unit to attach the white sponge.
from the bottom of the ADF unit.
4. Open the ADF unit. And then, rub the surface of the
2. Place the white sponge on the platen glass and align it white sponge.
with top and left line.
NOTE
Recommendation of Gap : 0.5~1 mm

3.3.38. Double Cassette Feeder(DCF) Unit
3.3.38.1. DCF Feed Motor
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 3. Remove 3 screws. Then, remove the Feed Drive Unit.
remove the COVER-REAR.
2. Unplug 2–motor connectors. Open the harness clamp.
4. Remove 2 screws. Then, replace the Feed Motor.

3.3.38.2. DCF Pick-up Motor
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 2. Unplug the motor connector. Remove 2 screws. And
remove the COVER-REAR. replace the DCF Pick-up Motor.

3.3.38.3. DCF PBA
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 2. Unplug the 8 connectors. Remove 3 screws. And
remove the COVER-REAR. replace the DCF PBA.

3.3.39. High Capacity Feeder(HCF) Unit
3.3.39.1. HCF Feed Motor
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 3. Remove 3 screws. Then, remove the Feed Drive Unit.
remove the COVER-REAR.
2. Unplug 2–motor connectors. Open the harness clamp.

3.3.39.2. HCF Pick-up Motor
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 2. Unplug the motor connector. Remove 2 screws. And
remove the COVER-REAR. replace the HCF Pick-up Motor.

3.3.39.3. HCF PBA
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 2. Unplug the 8 connectors. Remove 3 screws. And
remove the COVER-REAR. replace the HCF PBA.

3.3.39.4. HCF Lift-up Motor
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 2. Unplug the connector. Remove 3 screws. And replace
remove the COVER-REAR. the Lift-up Motor.

3.3.39.5. HCF Shaft Motor
1. Remove 4 “CAP-SCREW”. Remove 4 screws. And 2. Unplug the connector. Remove 3 screws. And replace
remove the COVER-REAR. the Shaft Motor.

3.3.40. High Capacity Feeder Side Unit (Large Cassette Tray Unit)
3.3.40.1. LCT Feed Motor
1. Remove 7 “CAP-SCREW”. Remove 7 screws. And 4. Unplug 2 connectors. Open the harness clamp. Remove
remove the COVER-RIGHT LCT. 3 screws. And, remove the DRIVE-PH.
2. Remove the COVER-HARNESS LCT.
3. Remove 3 screws from the top side. Then, remove the

COVER-REAR LCT.

3.3.40.2. LCT Pick-up Motor
1. Remove 7 “CAP-SCREW”. Remove 7 screws. And 3. Remove 3 screws from the top side. Then, remove the
remove the COVER-RIGHT LCT. COVER-REAR LCT.
4. Unplug the motor connector. Remove 2 screws. And,

replace the Pick-up Motor.
3.3.40.3. LCT PBA
1. Remove 7 “CAP-SCREW”. Remove 7 screws. And 2. Remove the COVER-HARNESS LCT.

remove the COVER-RIGHT LCT.

3. Remove 3 screws from the top side. Then, remove the 4. Unplug all connectors. Remove 3 screws. And, replace
COVER-REAR LCT. the LCT PBA.

3.3.40.4. LCT Lift-up Motor
1. Remove 7 “CAP-SCREW”. Remove 7 screws. And 3. Remove 3 screws from the top side. Then, remove the
remove the COVER-RIGHT LCT. COVER-REAR LCT.
4. Unplug the motor connector. Remove 3 screws. And,

replace the LCT Lift-up Motor.

4. Troubleshooting
4. Troubleshooting
4.1. Control panel
Shows the current machine status and prompts during an operation. You
1 Display screen
can set menus easily using the display screen.
2 Motion sensor hole Motion sensor.
Turn the power on or off. When the blue LED is on, the machine is
3 (Power / Wakeup) button powered on and you can use it. If you turn the machine off, press this
button for more than two seconds. Then, confirmation window appears.
4 Power LED Shows the power status of your machine.
CAUTION
When you use the display screen, use your finger only. The screen may be damaged with a sharpen pen or anything else.

4. Troubleshooting
4.1.1. Display screen and useful buttons
NOTE
For more information, refer to the user guide.
4.1.1.1. Menu navigation
Terms used in this manual

• Tap
Lightly touch items to select or launch them. For example:
- Tap the on screen keyboard to enter characters or text.
- Tap a menu item to select it.
- Tap an application’s icon to launch the application.
• Touch and Hold
Activate on-screen items by a touch and hold gesture. For example:
- Touch and hold a widget on the home screen to move it.
- Touch and hold on a field to display a pop-up menu of options.
• Swipe
To swipe, lightly drag your finger vertically or horizontally across the screen. Use swipe when :
- Scrolling through the home screen or a menu
• Panning
To pan, touch and hold a selected icon, then move the device to the left or right to reposition it to another page.
For example:
- Move icons on your home screens or application menus to another page.
Main Screen

4. Troubleshooting
Command Keys
• (Back) icon : Return to the previous screen, option or step.
• (Home) icon : Display the main Home screen.
• (Recent) icon : Display recently used apps.
• Quick launch : Excute applied settings.
Add quick launch
1) Tap (Setting) icon > Display > More Settings > Quick Launch from the display screen.
2) Select the quick launch option.
• None: Icon not shows.
• Screen Capture ( ): Capture the current screen.
• Applications: Move to all apps.
• Search: Move to search screen.
3) Tap (Back) icon or other settings menu.
4.1.1.2. Home Screen Overview
The main home screen is the starting point for many applications and functions, and it allows you to add items like
application icons, shortcuts or widgets to give you instant access to information and applications. This is the default page
and accessible from any menu by tap icon . The display screen image in this user’s guide may differ from your
machine depending on its options or models.
NOTE
Depending on the authentication setting, the machine’s users have to enter an ID and a password. In this case, the machine can
only be used by an authorized user who has registered an ID and a password on the machine. Contact the machine’s administrator.
Navigating Through the Home Screens

The machine initially has six home screens. If you like, you can place different applications on each of the home screens.
NOTE
From the main Home screen, sweep the screen with your finger in either direction. The main home screen is located in the
middle with three Home screens on each side.
Navigating through the application menus

This machine initially has four application menus available in main home screen. If you want to using all application menus
and widgets, tap icon. Then sweep the screen left or right to access the other menus and widgets.

4. Troubleshooting
NOTE
As you add applications, the number of Application menus that you have available will increase.
Accessing recently-used apps

You can find the recently-used apps easily.
1) Tap icon from any screen to open the recently-used applications window.
2) Tap an icon to open the selected application.
4.1.1.3. Customizing your home screen
You can customize your Home screen.
Creating shortcuts
Shortcuts are different from widgets. While widgets can only launch applications, shortcuts can do this and activate
features and actions.
[ Adding a shortcut from the home screen ]
1) Tap icon to activate the main home screen.
2) Touch and hold the home screen, shows list. Then select your desired shortcut.
• Set wallpaper
- Home Screen : You can setting the wallpaper of Home Screen.
- Login Screen : You can setting the wallpaper of Login Screen.
- Home and Login Screen : You can setting the wallpaper of both.
• Apps, XOA Apps, Widgets and Programs : Place apps, XOA apps, widgets, and program icons on home screen.
• Folder : You can create folder on home screen.
• Page : You can add page.
[ Adding a shortcut from the Apps menu ]
2) Tap icon to display your current applications.
3) Scroll through the list and locate the desired application.
4) Touch and hold the application icon. This creates a shortcut to the application and shows the main home screen.
5) Drag the shortcut to a desired position on the screen and release it. To move to a different page, drag the shortcut to the
edge of the screen until the screen scrolls to the desired page.
[ Deleting a shortcut ]
1) Touch and hold a shortcut until it becomes movable.

4. Troubleshooting
2) You can drag shortcut and place a shortcut in the trash, both items turn red.
NOTE
This action does not delete the shortcut, it just removes it from the current screen.
Adding and removing widgets

Widgets are self-contained applications that reside on your widgets tab and on any page of the home screen. Unlike
shortcuts, a widget appears as an on-screen application.
[ Adding a widget ]
2) Tap icon and tap the Widgets tap at the top of the screen.
3) Scroll through the list and locate your desired widget.
4) Touch and hold the widget icon. This creates a copy of the widget and opens the main home screen.
5) Drag the widget to the desired position on the screen and release it. To move the widget to a different page, drag it to the
edge of the screen until the screen scrolls to the desired page.
[ Removing a widget ]
1) Touch and hold a widget until it becomes movable.
2) You can drag shortcut and place a shortcut in the trash, both items turn red.
NOTE
This action does not uninstall a widget, it only removes the copy from the home screen.
Moving icons in the Apps menu
1) Tap icon to go to the main home screen.
2) Tap icon to display your current applications.
3) Tap the Apps tab at the top of the screen if it is not already selected.
4) Drag the icon to a desired position on the screen and release it. To move to a different page, drag the icon to the edge of
the screen until the screen scrolls to the desired page.
Changing the Wallpaper

You can customize the Wallpaper (background) of your home screens.
1) From any home screen, touch and hold on an empty area of the screen. Then select Set wallpaper option.
2) Tap one of the following options in the window that appears.
• Home Screen : Set the wallpaper for the Home Screen.
• Login Screen : Set the wallpaper for the Login Screen.
• Home and Login Screen : Set the wallpaper for both screens.

4. Troubleshooting
3) Tap one of the following options in the next window that appears.
• Gallery: Select a wallpaper from photographs and images in the machine’s gallery.
• Live wallpapers: Select an animated image.
• Wallpapers: Select from several built-in stationary images.
4) Select a wallpaper and tap OK, Set wallpaper, or Cancel.
4.1.1.4. Notification Bar
The notification bar includes a pull-down list to show information about processes that are running, toner status, darkness,
recent notifications, and alerts.
NOTE
On the home screen, touch and hold the notification bar until the pull-down displays, then drag down vertically.
Accessing additional panel functions

In addition to notifications, this panel also provides quick and ready access to separate device functions. These can be
quickly activated or deactivated by toggling them on or off. The following functions can either be activated (green) or
deactivated (gray): ECO, Wi-Fi, NFC, Log in, Setup and darkness setting.

4. Troubleshooting
4.2. Understanding the LEDs
Understanding the status LED

The color of the status LED indicates the machine's current status.
Status Description
Off • The machine is off-line.
• The machine is in power save mode. When data is received, or any button is pressed, it
switches to online automatically.
Ice-blue On The machine is on-line and can be used.
Blinking Fax The machine is sending or receiving faxes.
Copy The machine is copying documents.
Scan The machine is scanning documents.
Print • When the status LED slowly blinks, the machine is receiving data from the
computer.
• When the status LED blinks rapidly, the machine is printing data.
Red On • The imaging unit is at the end of its lifespan. Remove the old imaging unit and install a new one.
• The toner cartridge life* is totally empty. Remove the old toner cartridge and install a new one.
• A paper jam has occurred.
• The door is open. Close the door.
• There is no paper in the tray. Load paper in the tray
• The machine has stopped due to a major error. Check the display message.
• The waste toner container is not installed in the machine, or full waste toner container.
Blinking • A minor error has occurred and the machine is waiting for the error to be cleared. Check the
display message. When the problem is cleared, the machine resumes its original task.
• The toner cartridge life, imaging unit, or waste toner container is near the end of its life. Order
a new toner cartridge, imaging unit, or waste toner container. You can temporarily improve
print quality by redistributing the toner.

4. Troubleshooting
4.3. Updating Firmware
This chapter includes instructions for updating the printer firmware. You can update the printer firmware by using one
of the following methods :
• Update the firmware by using the printer control panel

• Update the firmware by using the network.
4.3.1. Updating from the Printer Control Panel
WARNING
Failure to follow these instructions could lead to corruption issues and prevent the proper operation of this printer. Follow
all of the instructions carefully.
1) Download the firmware file from the Global Service Partner Network (GSPN) or Technical Support Portal (TSP) website.
2) Unzip the firmware file to a folder on your PC.
3) Copy the firmware file (*.hds or *.par) to a USB flash drive.
4) Plug the USB flash drive into the USB port.
5) Press the button on control panel in this order. (Settings > Admin Settings > Application Management > Application
> Install)
6) The installation window will list the files on the USB drive. Touch the name of the firmware file to select it.
7) Press the “OK” button after selecting the file.
8) Once the installation is complete, “OK” button will be activated. Press “OK” button.

4. Troubleshooting
4.3.2. Updating from the Network
WARNING
Failure to follow these instructions could lead to corruption issues and prevent the proper operation of this MFP. Follow
all of the instructions carefully.
Perform the following procedure to update the MFP firmware from the network.
1) Go to the SyncThruWeb Service (SWS) main home page. Login as Admin in Sync Thru Web Service.
NOTE
Login using the Administrator ID and Password established during initial machine setup.
2) Click on Maintenance > Application Management > Application > Add.

4. Troubleshooting
3) Choose installation file (F/W file) by browsing the file system and click [OK].
4) The uploading step will start.
5) After uploading the f/w file on MFP, validation information will appear. Check the [Overwrite] check-box if you want
to force the firmware update even if the firmware version to be installed is lower or same with the currently installed
firmware in the device. Press [OK] to start the firmware upgrade.

4. Troubleshooting
6) The firmware update will start.
7) Once the installation is complete, the machine power-off and power-on automatically.

4. Troubleshooting
4.4. JAM removal
4.4.1. Clearing original document jams
When an original jams while passing through the document CAUTION

feeder, a warning message appears on the display screen.
To avoid tearing the document, remove the jammed
document slowly and gently.
NOTE
To prevent document jams, use the scanner glass for thick,

thin, or mixed paper-type originals.
Original paper jam in front of scanner

1) Remove any remaining pages from the ADF. 3) Gently remove the jammed paper from the ADF.
2) Open the ADF cover.
4) Close the ADF cover.

4. Troubleshooting
Original paper jam inside of scanner

1) Remove any remaining pages from the ADF. 4) Open the input tray.
2) Open the ADF cover.
5) Pull the jammed paper gently out of the ADF.

3) Gently remove the jammed paper from the ADF.
If you do not see paper in this area, go to the next step.

If you do not see paper in this area, go to the next step. 6) Close ADF cover and ADF input tray.

4. Troubleshooting
7) Open the ADF. 8) Grasp the misfed paper, and remove the paper from the
feed area by carefully pulling it using both hands.
9) Close the ADF.

4. Troubleshooting
4.4.2. Clearing paper jams
When a paper jam occurs, a warning message appears on NOTE

the display screen.
To avoid tearing the paper, pull the jammed paper out slowly
and gently. Follow the instructions in the following sections
to clear the jam.
Paper jam in tray 1, 2

3) Pull out tray 1 or 2.
CAUTION
The fuser area is hot. Take care when removing paper

from the machine.
1) Open the right door.
4) Remove the jammed paper from the machine.
2) Remove the jammed paper by gently pulling it straight

out.
5) Insert tray 1 or 2 back into the machine until it locks

into place. Printing automatically resumes.
Close the right door. If you do not see paper in this

area, go to the next step.

4. Troubleshooting
Paper jam in tray 3, 4

1) Open the right bottom door of the dual cassette feeder. 2) Remove the jammed paper by gently pulling it straight
out.
Close the dual cassette feeder right bottom door. If you

do not see paper in this area, go to the next step.
3) Pull out tray 3 or 4.
4) Remove the jammed paper from the machine.
5) Insert tray 3 or 4 back into the machine until it locks

into place. Printing automatically resumes.
Paper jam in the multi-purpose tray

1) If the paper is not feeding properly, pull the paper out 2) Open and close the front door to resume printing.
of the machine.

4. Troubleshooting
Paper jam inside the machine (Jam feed 1, Jam feed 2)

CAUTION
out.
from the machine.
3) Close the right door.
Paper jam inside the machine (Jam feed 3, Jam feed 4)

1) Open the right bottom door of the dual cassette feeder. 2) Remove the jammed paper by gently pulling it straight
out.
3) Close the dual cassette feeder right bottom door.

4. Troubleshooting
Paper jam inside the machine (Jam Registration)

CAUTION
out.
from the machine.
3) Close the right door.
Paper jam inside of the machine (Jam at Fuser out)

2) Open the fuser cover. Then remove the jammed paper
CAUTION
by gently pulling it straight out.
from the machine.
3) Close the fuser cover and the right door.

4. Troubleshooting
Paper jam in exit area (Jam Exit Face down)

1) Gently pull the paper out of the output tray. 2) Open and close the front door. Printing automatically
resumes.
If this paper jam persists, make sure the bin full sensor
is unfolded. The bin full sensor is located in front of
the output tray.

4. Troubleshooting
4.5. Service Mode (Tech Mode)
4.5.1. Entering the Service Mode
To enter the service mode,
1) Press "Power button“ until the pop up will be displayed.
2) Press pop-up area except “Cancel” and “Turn Off” button until the password window will be displayed.
3) Enter “1934” and press the “Done” button.

4. Troubleshooting
4.5.2. Service Mode Menu Tree
a) Information Tab
Level 1 Level 2 Level 3 Level 4 Page
General P.4–26
Customer Replacement Unit Toner
Imaging Unit
Development Unit
Waste Toner Container
PTB Waste Toner Container
Transfer
Finisher
Supply Status P.4–26
Field Replacement Unit
NOTE
This menu shall be displayed

only if finisher is installed.
Fuser
Roller
ADF Roller
Software
P.4–27
Version
Information
Power On Hours
Service Hours P.4–27
Power Save Hours
Fault Log P.4–27
Supplies Information
Usage Counter
Error Information
Fax Protocol Dump (Line 1)
Fax Protocol Dump (Line 2)
Print Reports Fax Diagnostics (Line 1) P.4–27
Fax Diagnostics (Line 2)
Job Duty
Auto Toning History
Maintenance
Toner Event
RTF Format
Export Reports XML Format P.4–28
PDF Format

4. Troubleshooting
b) Maintenance Counts Tab

Fault Count P.4–29
Pick-up Jam
Feed Jam
Duplex Jam
Print Jam
Exit Jam
Finisher Jam *
Booklet Jam *
Jam Count Feed Jam P.4–29
Regi Jam
Scan Jam
Maintenance
Scan Jam Exit Jam
Counts
Duplex Regi Jam
Duplex Scan Jam
Duplex Exit Jam
Toner Cartridge
Imaging Unit
Development Unit
Part
Replacement Transfer P.4–30
Count
Fuser
Roller
ADF Roller
NOTE
* This menu shall be displayed only if finisher is installed.

4. Troubleshooting
c) Diagnostics Tab
Engine NVM Initialization P.4–31
Engine
Engine NVM Read/Write P.4–31
Diagnostics
Engine Test Routines P.4–31
Fax NVM Read/Write P.4–40
Fax Diagnostics
Fax Test Routines P.4–42
Shade and Print Report
Print Last Shade Report
Shading Test P.4–45
Scanner Shade and Print Report (ADF)
Diagnostics Print Last Shade Report (ADF)
Scanner/ADF NVM Read/Write P.4–46
Scanner/ADF Test Routines P.4–47
Diagnostics Automatic Adjustment P.4–49
Print Adjustment Image Position P.4–50
Print Test Patterns P.4–50
Copy Adjustment Image Position P.4–51
Adjustment
Automatic Adjustment P.4–52
Scan Area Adjustment
Manual Adjustment P.4–53
Automatic Adjustment P.4–54
ADF Adjustment
Manual Adjustment P.4–55
Image Normal
Auto Tone Adjustment Activation P.4–57
Management Full
Print Test Skew Pattern
P.4–57
Patterns

4. Troubleshooting
d) Service Functions
Main Memory
P.4–58
Clear
Device Configuration Data Clear
Temporary & Spool Data Clear
Hard Disk
User Saved Data & Log Clear P.4–58
Maintenance
All Saved Data Clear
HDD Encryption
Count Setting 1 Count Up

P.4–58
of Large Pages 2 Count Up
Enable Telnet
Enable OSGI
Network Port Enable Samba P.4–59
Enable SSH
Enable ADB
Off
Job Status
Debug Log P.4–59
Details
Activation for Boot Logs Off/ On
All
Service Capture Log P.4–59
Functions Period Start Date / End Date
Packet Capture Start/Stop
Network Packet
Capture File Download Export P.4–60
Capture
Capture File Delete Clear
System SYS
P.4–61
Recovery ALL
TR Control Paper Group / Paper Side / Paper
T2 Control Mode P.4–63
Mode Direction / T2 PWM
Clear System
P.4–64
Cache
ON
Hibernation OFF P.4–64
CREATE NEW
Paper Low Off
Warning P.4–64
Message On
Imaging Unit Off / On

Part
Replacement Development Unit Off / On P.4–64
Alert
Fuser Off / On
Type A
FDI P.4–65
Type B

4. Troubleshooting

Type C
Off
EIUL P.4–65
On
SFE Code List
Export
SFE Import P.4–66
Print
OK
Off
Continent
Dealer ID P.4–67
On Branch
Dealer ID
Off
Envelope
90 degrees P.4–67
Rotate
180 degrees

4. Troubleshooting
4.5.3. Information
4.5.3.1. General
• Information > General

This menu displays the following informations.
- Machine Serial Number
- Ethernet IP Address
- Ethernet Mac Address
- Optional Ethernet IP Address
- Optional Ethernet Mac Address
- Total Printed Impressions Machine
- Installed Date & Time
4.5.3.2. Supply Status
Customer Replacement Unit (CRU)

• Information > Supply Status > Customer Replacement Unit
This menu displays the machine’s customer replacement unit status. Users can select one item in the list to check the
information of the selected unit.
Field Replacement Unit (FRU)

• •Information > Supply Status > Field Replacement Unit
This menu displays the machine’s field replacement unit status. Users can select one item in the list to check the
information of the selected unit.
In this menu, there are five columns : Item, Threshold, Status, Count, Maximum Life.
• Status : This shows the current status of the selected item.

- OK : The current count is smaller than the default warning value
- Check : The current count is bigger than default warning value
- OFF : The current count exceeds the max life.
• Count : This shows the current count of the selected item.
• Maximum life : This shows the max capacity of the selected item.
The technician can edit the default warning value within the given threshold.
Selecting some items will enable the reset button to reset the current count to 0 after replacing the unit.

4. Troubleshooting
4.5.3.3. Software Version
• Information > Software Version

This menu displays all the version of the software installed in the system in detail.
4.5.3.4. Service Hours
• Information > Service Hours

This menu displays two items, “Power on Hours”, “Power Save Hours”.
- Power on Hours : It indicates the hours of system power on since the first booting of the system.
- Power Save Hours : It indicates the hours of system power save since the first booting of the system.
4.5.3.5. Fault Log
• Information > Fault Log

This menu displays faults occurred while the system was operating.
Pressing clear button will clear all the save fault log of the system.
4.5.3.6. Print Reports
• Information > Print Reports

This menu displays reports which that can be printed from the system. The following reports will be available to print.
- Supplies Information
- Usage Counter
- Error Information
- Fax Protocol Dump (Line 1)
- Fax Protocol Dump (Line 2)
- Fax Diagnostics (Line 1)
- Fax Diagnostics (Line 2)
- Job Duty
- Auto Toning History
- Maintenance
- Toner Event
Auto Toning History

• Information > Print Reports > Auto Toning History
NOTE
TRC means “Tone Reproduction Curve”.
This report shows history of execution of TRC control. TRC control preserves color consistency against changes in supplies
resulting from long-time use and environmental change. The purpose of the history report is to check if TRC control
works normally.

4. Troubleshooting
• If TRC control performs normally, “Pass” count must be non-zero value and “Fail” count must be zero.
• If “Fail” count is not zero, the image density sensor needs to be checked.
4.5.3.7. Export Reports
• Information > Export Reports

This menu exports report to usb stick. Configuration, Error Information, Supplies Information, Usage Counter Reports
are exported as the form of selected format.

4. Troubleshooting
4.5.4. Maintenance Counts
4.5.4.1. Fault Count
• Maintenance Counts > Fault Count

This menu displays the fault counts of the system. Technician can select one fault group and press “OK” to see detailed fault
descriptions. The detailed fault description window displays engine diagnostic code and descriptions of the fault along
with the number of occurrences.
The following list shows the group of the faults defined for the system.
A1 Motor H2 Output (Bins) System S3 Scan System

A2 Fan M1 Input (Trays) System S5 UI System
A3 Sensor M2 Media Path System S6 Network System
C1 Toner Cartridge Unit M3 Output (Bins) System S7 HDD System
C3 Imaging Unit M4 Auto Document Feeder System U1 Fusing Unit
C7 Fusing unit S1 Video System U2 LSU Unit
H1 Input (Trays) System S2 Engine System
4.5.4.2. Jam Count
• Maintenance Counts > Jam Count

This menu displays the jam Counts of the system. Users can select one jam group, which indicates the location of jams, and
press “OK” to see a detailed jam location along with the occurrence of the jam.
The following table shows the jam groups defined for the system :
Level 1 Level 2
Pick-up Jam
Feed Jam
Print Jam
Duplex Jam
Exit Jam
Feed Jam
Regi Jam
Scan Jam
Scan Jam Exit Jam
Duplex Regi Jam
Duplex Scan Jam
Duplex Exit Jam

4. Troubleshooting
4.5.4.3. Part Replacement Count
• Maintenance Counts > Part Replacement Count

This menu displays the replacement Counts for the system parts. Users can select one part group and press “OK” to see the
exact name of the part along with the occurrence of the replacement.
The following table shows groups of the replaceable parts of the system.
Unit Item Sensing Method

Toner Cartridge Toner (Black) Auto Sensing
Imaging Unit Imaging Unit (Black) Auto Sensing
Fuser Fuser Auto Sensing
Transfer Transfer Roller Count Clear
Tray 1 Roller Count Clear
Roller
ADF Roller ADF Roller Count Clear

4. Troubleshooting
4.5.5. Diagnostics
4.5.5.1. Engine Diagnostics
Engine NVM Initialization

• Diagnostics > Engine Diagnostics > Engine NVM Initialization
This menu initializes all engine NVM value to the default.
Engine NVM Read/Write

• Diagnostics > Engine Diagnostics > Engine NVM Read/Write
Purpose To change a configuration value for engine firmware.
Operation When the main “NVM Read/Write” window displays, users can navigate through the list of codes with
Procedure descriptions and saved values.
Users can also input a code to the text box to find a configuration value directly.
After selecting one value, pressing “Edit” button will open an interface for user input.
Code NVM Description Meaning Default Max/ Min

103-0031 Regi Curl Length Buckle Control : Regi On Curl 10 16 / 4
103-0032 Duplex Regi Curl Length Buckle Control : Duplex Regi On Curl 10 16 / 4
(x1)
103-0038 Regi Curl Fast Speed Length Buckle Control : Regi On Curl (Fast 10 16 / 4
Speed)
109-0000 StandBy Temperature offset Target Temperature during standby mode. 10 15 / 5
109-0005 Warmup Temperature offset Target Temperature during warmup Mode. 10 15 / 5
109-0055 Thin Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
109-0065 Plain Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
109-0070 Bond Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
109-0071 Heavy Temperature offset Media type offset for fuser roll remperature. 10 15 / 5
109-0072 Extra Heavy Temperature offset Media type offset for fuser roll remperature. 10 15 / 5
109-0080 Transparency Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
109-0100 Envelopes Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
109-0110 Labels Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
109-0130 Thick Temperature Offset Media type offset for fuser roll temperature. 10 15 / 5
109-0131 Recycled Temperature offset Media type offset for fuser roll temperature. 10 15 / 5
Engine Test Routines

• Diagnostics > Engine Diagnostics > Engine Test Routines
Purpose To perform test routines for the engine.
Operation Procedure When the main Engine Test Routines window displays, users can navigate through the list of routines
that display along with their descriptions. Users can also directly input an EDC code to the text box to
find a routine. Users can select a maximum of 3 routines at the same time.
After selecting one or multiple routines, pressing the “OK” button will open the test window that lists
selected routines. Users can start/stop a desired test routine.

4. Troubleshooting
Code Display Meaning

100-0044 OPC Motor K Black Opc BLDC Motor is On/Off
100-0049 K OPC Motor Ready Detect if Black OPC BLDC Motor runs at normal speed
100-0140 Duplex Motor Forward Duplex Motor Forward On/Off
100-0141 Duplex Motor Forward Slow Duplex Motor Forward Slow On/Off
100-0142 Duplex Motor Forward Slowest Duplex Motor Forward Slowest On/Off
100-0160 Duplex Fan1 Run Start/Stop Duplex Fan1 run
100-0180 Dupelx Fan1 Run Ready Detects if Duplex Fan1 runs at normal speed.
100-0200 T1 Elevating Motor T1 Elevate Motor On/Off
100-0210 T2 Elevating Motor T2 Elevate Motor On/Off (Optional)
100-0241 Waste Toner Led Waste Toner Led On/Off
100-0250 Waste Toner Full Sensor Detect if the waste toner is full or not.
100-0251 PTB Waste Toner Full Sensor Detect level of a PTB waste toner bottle
100-0260 SMPS Fan Run Start/Stop SMPS Fan run
100-0270 SMPS Fan Run Ready Detects if SMPS Fan runs at normal speed.
100-0340 Feed Motor Feed Motor is On/Off
100-0341 Feed Motor Slow Feed Motor Slow On/Off
100-0342 Feed Motor Slowest Feed Motor Slowest On/Off
100-0370 Tray1 Pickup Motor Tray1 Motor is On/Off
100-0371 Tray1 Pickup Motor Slow Tray1 Motor Slow On/Off
100-0372 Tray1 Pickup Motor Slowest Tray1 Motor Slowest On/Off
100-0410 Registration Motor Registration Motor is On/Off
100-0411 Registration Motor Slow Registration Motor Slow On/Off
100-0412 Registration Motor Slowest Registration Motor Slowest On/Off
100-0420 MP Motor MP Motor is On/Off
100-0421 MP Motor Slow MP Motor Slow On/Off
100-0422 MP Motor Slowest MP Motor Slowest On/Off
100-0430 Exit2 Motor Forward Exit2 Motor is On/Off

4. Troubleshooting

100-0431 Exit2 Motor Forward Slow Exit2 Motor Slow On/Off
100-0432 Exit2 Motor Forward Slowest Exit2 Motor Slowest On/Off
100-0490 Duplex2 Motor Forward Duplex Motor Forward On/Off
100-0491 Duplex2 Motor Forward Slow Duplex Motor Slow Forward On/Off
100-0492 Duplex2 Motor Forward Slowest Duplex Motor Slowest Forward On/Off
100-0600 Return Motor Forward Return Motor Forward On/Off
100-0601 Return Motor Forward Slow Return Motor Slow Forward On/Off
100-0602 Return Motor Forward Slowest Return Motor Slowest Forward On/Off
100-0603 Return Motor Backward Return Motor Backward On/Off
100-0604 Return Motor Backward Slow Return Motor Slow Backward On/Off
100-0605 Return Motor Backward Slowest Return Motor Slowest Backward On/Off
101-0101 T3 Shift Gate Solenoid Tray3 Shift Gate Solenoid On/Off
101-0140 T3 Feed Motor T3 Feed Motor On/Off
101-0151 T4 Feed Motor Slow T4 Feed Motor Slow On/Off
101-0152 T4 Feed Motor Slowest T4 Feed Motor Slowest On/Off
101-0161 T5 Feed Motor Slow T5 Feed Motor Slow On/Off
101-0162 T5 Feed Motor Slowest T5 Feed Motor Slowest On/Off
101-0190 Out-Bin Full Sensor Detect when a paper is at Out-Bin Full Sensor
101-0191 Out-Bin2 Full Sensor Detect when a paper is at Out-Bin2 Full Sensor
101-0206 Dev Suction Fan Run Start/Stop Dev Suction Fan run
101-0207 Dev Suction Fan Run Ready Detects if Dev Suction Fan runs at normal speed.
101-0270 MP Clutch MPClutch On/Off
101-0271 MP Solenoid MP Solenoid On/Off
101-0280 Return Gate Solenoid Return Gate Solenoid On/Off
102-0000 Tray1 Home Position Detect when tray1 is closed.
102-0001 Tray1 Lock Detect Detect tray1 lock unit
102-0002 Tray1 Lock Position Check tray1 lock position
102-0010 T1 Paper Empty Sensor Detect when paper is in Tray1.
102-0041 T1 Paper Size Read Detects Paper Tray1 size.
102-0050 T1 Stack Height Sensor Detects if paper in tray1 is elevated to the sensor.
102-0080 T2 Paper Empty Sensor Detect when paper is in tray2.

4. Troubleshooting

102-0201 T3 Level Sensor 1 Detects when the stack height of tray3 Level Sensor 1
102-0273 T4 Install Sensor1 Detect when Tray T4 install sensor 1
102-0280 Bypass Paper Empty Sensor Detects when paper is in Bypass Tray(MP Tray).
102-0281 Bypass Paper Size Read Detects Paper MP size.
102-0292 Pre Feed1 Sensor Detect when a paper is at Pre Feed1 sensor.
102-0300 T2 Feed Sensor (or Door Open) Detect when a paper is at T2 Feed sensor. (optional)
102-0320 T3 Feed Sensor (or Door Open) Detect when a paper is at T3 Feed sensor. (optional)
102-0330 T3 Door Open Sensor Detect when T3 is closed.
102-0350 T4 Door Open Sensor Detect when T4 is closed.
102-0351 T5Door Open Sensor Detect when T5 is closed.
102-0353 Pre Feed5 Sensor Detect when a paper is at Pre Feed5 sensor. (optional)
102-0360 Regi. Sensor Detect when a paper is at Regi. sensor.
102-0361 FuserOut Sensor Detect when a paper is at FuserOut sensor.
102-0371 Exit2 Sensor Detect when a paper is at Exit2 sensor.
102-0380 Duplex Jam1 Sensor Detect when a paper is at Duplex Jam1 sensor.
102-0390 Duplex Jam2 Sensor Detect when a paper is at Duplex Jam2 sensor.
102-0435 Front Cover Sensor Detect status of Front cover.
102-0436 Side Cover Sensor Detect status of Front cover.

4. Troubleshooting

102-0730 T3 Knock Up Home Sensor Detect when Tray T3 knock up home sensor.
102-0731 T3 ShiftTray Paper Empty Sensor Detect when paper is in T3 ShfitTray
102-0732 T3 ShiftTray Level Sensor1 Detects when the stack height of T3 ShiftTray level
sensor 1
102-0733 T3 ShiftTray Level Sensor2 Detects when the stack height of T3 ShiftTray level
sensor 2
102-0734 T3 Shfit Plate Home Sensor Detect when T3 Shfit Plate home sensor
102-0735 T3 Shfit Plate End Sensor Detect when T3 Shfit Plate end sensor
102-0736 T3 Gate Solenoid Home Sensor Detect when T3 Gate Solenoid home sensor
104-0000 Waste Install Sensor Detect if Waste is installed.
105-0030 Black MHV Bias Black MHV bias voltage on at normal drive level
106-0030 Black Dev Bias Black Dev bias voltage on at normal drive level
106-0031 Black Dev AC Bias Black Dev bias AC voltage on at normal drive level
106-0200 HVPS Installed Detect HVPS Unit
107-0033 THV(-) Bias THV minus bias voltage on at normal drive level
107-0034 THV CC Bias THV constant current plus bias voltage
107-0035 THV CV Bias THV constant voltage plus bias voltage
107-0165 K Eraser On K Eraser Lamp On/Off
107-0169 K Eraser Detect Detect K eraser status
109-0000 Fuser Temperature A Detects what the temperature A is on fuser.
109-0010 Fuser Temperature B Detects what the temperature B is on fuser.
109-0012 Inner Temperature Inner Temperature
109-0013 Outer Temperature Outer Temperature
109-0014 Huminity Huminity
109-0020 Fuser Fan Run Ready Detects if Fuser Fan Motor runs at normal speed.
109-0021 Exit2 Fan Run Start/Stop Exit2 Fan run
109-0022 Exit2 Fan Run Ready Detects if Exit2 Fan runs at normal speed.
109-0023 Exit3 Fan Run Start/Stop Exit3 Fan run
109-0024 Exit3 Fan Run Ready Detects if Exit3 Fan runs at normal speed.
109-0030 Fuser Motor Forward Fuser Motor Forward On/Off
109-0034 Fuser Motor Ready Detect if Fuser Motor runs at each speed
109-0040 Fuser Fan Run Fuser Fan Motor On/Off
109-0046 Exit Fan Run Exit Fan Motor On/Off
109-0047 Exit Fan Run Ready Detects if Fuser Fan runs at normal speed.
109-0130 Fuser Gap Motor Fuser press control motor On/Off
109-0140 Fuser Gap Home Sensor Detect if the fuser press is located Home position.
109-0200 Detect Fuser Relay Detect Fuser Relay Status

4. Troubleshooting

109-0210 Detect ZeroCross Period Detect ZeroCross Period
109-0300 Fuser Installed Detect Fuser Unit
110-0000 LSU Motor1 Run Ready Detects if LSU motor1 runs at normal speed.
110-0060 LSU Motor1 Run LSU Motor1 On/Off
110-0110 LSU LD Power4 LSU LD4 Power On/Off (black)
110-0170 LSU HSync4 Detect LSU HSync4 (black)
110-0200 LSU Installed Detect LSU Unit
111-0030 Toner Dispense Motor Black Toner Dispense(Supply) Motor On/Off
111-0070 Toner Sensor Black TC sensor in developer tank.
111-0140 Toner Control Voltage K K Toner Voltage On/Off
111-0230 Toner Supply Lock Sensor K K Supply Motor Lock Sensor
111-0330 Toner Reservior Motor K K Reservior Motor On/Off
111-0370 Toner Reservior Level K K Reservior Level Display
112-0340 Center ID Sensor P Read Show Center ID Sensor P value
112-0350 Center ID Sensor S Read Show Center ID Sensor S value
113-0000 Finisher Present Sensor Detect if the Finisher is in place.
113-0350 Finisher Entrance Sensor Detect when a paper is at Entrance Sensor
113-0360 Finisher Exit Sensor Detect when a paper is at Exit Sensor
113-0361 Finisher Compile Paper Sensor Detect when a paper is at Compile Sensor
113-0370 Finisher Paddle Home Sensor Detect Paddle Home position
113-0380 Finisher Left Tamper Home Sensor Detect Lift Tamper Home position
113-0390 Finisher Right Tamper Home Sensor Detect Right Tamper Home position
113-0410 Finisher Stapler Door Sensor Detect Stapler Door Cover is closed
113-0420 Finisher Jam Cover Sensor Detect Jam Door Cover is closed
113-0430 Finisher Stapler Home Sensor Detect Stapler Home position
113-0440 Finisher Stapler Low Sensor Detect Stapler level
113-0451 Finisher Stapler Ready Sensor Detect Stapler Ready Sensor
113-0461 Finisher Ejector1 Home Sensor Detect Ejector1 Home position
113-0462 Finisher Ejector2 Home Sensor Detect Ejector2 Home position
113-0463 Finisher Ejector2 Encoder Sensor Detect Ejector2 Encoder Sensor
113-0470 Finisher Main Tray Home Sensor Detect Main Tray Home position
113-0471 Finisher Main Tray Beam Sensor Detect Main Tray Beam Sensor
113-0472 Finisher Main Tray LowLimit Sensor Detect Main Tray Low Limit Sensor
113-0473 Finisher Main Tray Encoder Sensor Detect Main Tray Encoder Sensor
113-0481 Finisher Paper Support Sensor Detect Paper Support Home Sensor
113-0491 Finisher Traverse Front Sensor Detect Traverse Front Home Sensor
113-0492 Finisher Traverse Rear Sensor Detect Traverse Rear Home Sensor
113-0501 Finisher Entrance Motor Finisher Entrance Motor On/Off
113-0502 Finisher Exit Motor Finisher Exit Motor On/Off
113-0510 Finisher Paddle Motor Finisher Paddle Motor On/Off

4. Troubleshooting

113-0520 Finisher Left Tamper Motor Finisher Left Tamper Motor On/Off
113-0530 Finisher Right Tamper Motor Finisher Right Tamper Motor On/Off
113-0550 Finisher Staple Unit Motor Finisher Staple Unit Motor On/Off
113-0561 Finisher Ejector1 Motor Finisher Ejector1 Motor On/Off
113-0562 Finisher Ejector2 Motor Finisher Ejector2 Motor On/Off
113-0563 Finisher Ejector2 Reverse Motor Finisher Ejector2 Reverse Direction On/Off
113-0570 Finisher Main Tray Motor Finisher Main Tray Motor On/Off
113-0571 Finisher Paper Support Motor Finisher Paper Support Motor On/Off
113-0581 Finisher Traverse Motor Finisher Staple Unit Traverse Motor On/Off
113-0591 Finisher Paper Hold Solenoid Finisher Paper Hold Soleonid On/Off
113-0600 Finisher Punch Motor Finisher Punch Motor On/Off
113-0610 Finisher Punch Encoder Sensor Detect Finisher Punch Encoder Sensor
113-0611 Finisher Punch Position Sensor Detect Finisher Punch Position Sensor
113-0612 Finisher Punch Home Sensor Detect Finisher Punch Home Sensor
113-0620 Finisher Hopper Install Sensor Detect Finisher Punch Hopper Install Sensor
113-0621 Finisher Hopper Full Sensor Detect Finisher Punch Hopper Full Sensor
113-2000 2BinFinisher Buffer lift Sensor Detect 2Bin Finisher Buffer lift Sensor
113-2010 2BinFinisher Clamp home Sensor Detect 2BinFinisher Clamp home Sensor
113-2020 2BinFinisher Diverter home Sensor Detect 2BinFinisher Diverter home Sensor
113-2030 2BinFinisher Eject1 away Sensor Detect 2BinFinisher Eject1 away Sensor
113-2031 2BinFinisher Eject1 home Sensor Detect 2BinFinisher Eject1 home Sensor
113-2032 2BinFinisher Eject1 encoder Sensor Detect 2BinFinisher Eject1 encoder Sensor
113-2040 2BinFinisher Eject2 home Sensor Detect 2BinFinisher Eject2 home Sensor
113-2041 2BinFinisher Eject2 encoder Sensor Detect 2BinFinisher Eject2 encoder Sensor
113-2050 2BinFinisher End fence Sensor Detect 2BinFinisher End fence Sensor
113-2060 2BinFinisher Paddle home Sensor Detect 2BinFinisher Paddle home Sensor
113-2070 2BinFinisher Bridge entrance Sensor Detect 2BinFinisher Bridge entrance Sensor
113-2071 2BinFinisher Bridge middle Sensor Detect 2BinFinisher Bridge middle Sensor
113-2080 2BinFinisher Entrance Sensor Detect 2BinFinisher Entrance Sensor
113-2090 2BinFinisher Main exit Sensor Detect 2BinFinisher Main exit Sensor
113-2091 2BinFinisher Sub exit Sensor Detect 2BinFinisher Sub exit Sensor
113-2100 2BinFinisher Buffer exit Sensor Detect 2BinFinisher Buffer exit Sensor
113-2110 2BinFinisher Stapler home Sensor Detect 2BinFinisher Stapler home Sensor
113-2111 2BinFinisher Stapler rear Sensor Detect 2BinFinisher Stapler rear Sensor
113-2112 2BinFinisher Stapler front Sensor Detect 2BinFinisher Stapler front Sensor
113-2113 2BinFinisher Stapler manual Sensor Detect 2BinFinisher Stapler manual Sensor
113-2114 2BinFinisher Stapler head Sensor Detect 2BinFinisher Stapler head Sensor
113-2115 2BinFinisher Stapler low Sensor Detect 2BinFinisher Stapler low Sensor
113-2116 2BinFinisher Stapler ready Sensor Detect 2BinFinisher Stapler ready Sensor
113-2120 2BinFinisher Front tamper Sensor Detect 2BinFinisher Front tamper Sensor

4. Troubleshooting

113-2130 2BinFinisher Rear tamper Sensor Detect 2BinFinisher Rear tamper Sensor
113-2140 2BinFinisher Main beam Sensor Detect 2BinFinisher Main beam Sensor
113-2141 2BinFinisher Main Front level Sensor Detect 2BinFinisher Main Front level Sensor
113-2142 2BinFinisher Main Rear level Sensor Detect 2BinFinisher Main Rear level Sensor
113-2143 2BinFinisher Main Encoder Sensor Detect 2BinFinisher Main Encoder Sensor
113-2144 2BinFinisher Main Full Sensor Detect 2BinFinisher Main Full Sensor
113-2145 2BinFinisher Sub Full Sensor Detect 2BinFinisher Sub Full Sensor
113-2150 2BinFinisher Booklet paper Sensor Detect 2BinFinisher Booklet paper Sensor
113-2160 2BinFinisher Staple paper Sensor Detect 2BinFinisher Staple paper Sensor
113-2161 2BinFinisher Staple button Sensor Detect 2BinFinisher Staple button Sensor
113-2170 2BinFinisher Compile paper Sensor Detect 2BinFinisher Compile paper Sensor
113-2180 2BinFinisher Bridge cover Sensor Detect 2BinFinisher Bridge cover Sensor
113-2181 2BinFinisher Top cover Sensor Detect 2BinFinisher Top cover Sensor
113-2182 2BinFinisher Front door Sensor Detect 2BinFinisher Front door Sensor
113-2190 2BinFinisher Stack top Sensor Detect 2BinFinisher Stack top Sensor
113-2200 2BinFinisher Bridge detect Sensor Detect 2BinFinisher Bridge detect Sensor
113-2201 2BinFinisher Punch detect Sensor Detect 2BinFinisher Punch detect Sensor
113-2202 2BinFinisher Booklet detect Sensor Detect 2BinFinisher Booklet detect Sensor
113-2500 2BinFinisher Buffer lift Motor 2BinFinisher Buffer lift Motor On/Off
113-2510 2BinFinisher Clamp Motor 2BinFinisher Clamp Motor On/Off
113-2520 2BinFinisher Diverter Motor 2BinFinisher Diverter Motor On/Off
113-2530 2BinFinisher Eject1 Motor 2BinFinisher Eject1 Motor On/Off
113-2540 2BinFinisher Eject2 Motor 2BinFinisher Eject2 Motor On/Off
113-2560 2BinFinisher Bridge feed Motor 2BinFinisher Bridge feed Motor On/Off
113-2570 2BinFinisher Entrance Motor 2BinFinisher Entrance Motor On/Off
113-2580 2BinFinisher Exit feed Motor 2BinFinisher Exit feed Motor On/Off
113-2590 2BinFinisher End fence Motor 2BinFinisher End fence Motor On/Off
113-2600 2BinFinisher Paddle Motor 2BinFinisher Paddle Motor On/Off
113-2610 2BinFinisher Maintray Motor 2BinFinisher Maintray Motor On/Off
113-2620 2BinFinisher Staple move Motor 2BinFinisher Staple move Motor On/Off
113-2621 2BinFinisher Staple head Motor 2BinFinisher Staple head Motor On/Off
113-2630 2BinFinisher Front tamper Motor 2BinFinisher Front tamper Motor On/Off
113-2640 2BinFinisher Rear tamper Motor 2BinFinisher Rear tamper Motor On/Off
113-2650 2BinFinisher Manual blue LED 2BinFinisher Manual blue LED On/Off
113-2651 2BinFinisher Manual red LED 2BinFinisher Manual red LED On/Off
113-3000 Booklet Stopper home Sensor Detect Booklet Stopper home Sensor
113-3010 Booklet Staple home Sensor Detect Booklet Staple home Sensor
113-3020 Booklet Front Staple empty Sensor Detect Booklet Front Staple empty Sensor
113-3030 Booklet Rear Staple empty Sensor Detect Booklet Rear Staple empty Sensor
113-3040 Booklet Knife home Sensor Detect Booklet Knife home Sensor

4. Troubleshooting

113-3050 Booklet Guide home Sensor Detect Booklet Guide home Sensor
113-3060 Booklet Diverter home Sensor Detect Booklet Diverter home Sensor
113-3080 Booklet Tamper home Sensor Detect Booklet Tamper home Sensor
113-3090 Booklet Paddle home Sensor Detect Booklet Paddle home Sensor
113-3100 Booklet Entrance paper Sensor Detect Booklet Entrance paper Sensor
113-3110 Booklet Tray paper Sensor Detect Booklet Tray paper Sensor
113-3120 Booklet Fold exit paper Sensor Detect Booklet Fold exit paper Sensor
113-3130 Booklet Press home Sensor Detect Booklet Press home Sensor
113-3500 Booklet Feed Motor Booklet Feed Motor On/Off
113-3510 Booklet Fold Motor Booklet Fold Motor On/Off
113-3520 Booklet Stopper Solenoid Booklet Stopper Solenoid On/Off
113-3530 Booklet Stopper Motor Booklet Stopper Motor On/Off
113-3540 Booklet Tamper Motor Booklet Tamper Motor On/Off
113-3550 Booklet Knife Motor Booklet Knife Motor On/Off
113-3560 Booklet Diverter Motor Booklet Diverter Motor On/Off
113-3570 Booklet Press Motor Booklet Press Motor On/Off
113-3580 Booklet Paddle Motor Booklet Paddle Motor On/Off
113-3590 Booklet Guide Motor Booklet Guide Motor On/Off
113-3600 Booklet Staple Motor Booklet Staple Motor On/Off
113-4000 Punch Scan home Sensor Detect Punch Scan home Sensor
113-4010 Punch Scan Edge1 Sensor Detect Punch Scan Edge1 Sensor
113-4020 Punch Home Sensor Detect Punch Home Sensor
113-4030 Punch Position A Sensor Detect Punch Position A Sensor
113-4031 Punch Position B Sensor Detect Punch Position B Sensor
113-4040 Punch Encoder Sensor Detect Punch Encoder Sensor
113-4050 Punch Hopper full Sensor Detect Punch Hopper full Sensor
113-4060 Punch Type1 detect Sensor Detect Punch Type1 detect Sensor
113-4061 Punch Type2 detect Sensor Detect Punch Type2 detect Sensor
113-4500 Punch Scan Motor Punch Scan Motor On/Off
113-4510 Punch Motor Punch Motor On/Off

4. Troubleshooting
4.5.5.2. Fax Diagnostics
Fax NVM Read/Write

• Diagnostics > Fax Diagnostics Fax NVM Read/Write
Purpose To change a configuration value for fax firmware.
Operation Procedure When the main “NVM Read/Write” window displays, users can navigate through the list of
configuration values that display along with description.
Users can also input a code to the text box to find a configuration value directly.
After selecting one value, pressing “Edit” button will open an interface for user input.
Verification N/A
Specification N/A
Reference N/A
Code Name Description Default Range

20-200 Pause Dial Time Pause Time (value * 1000ms) Country 0~200
Value
20-210 Dial Pulse M/B ratio 33 / 66 40 / 60 Country 0=OPTION_DP_33
Value 1=OPTION_DP_40
2=OPTION_DP_37
3=OPTION_DP_50
20-220 Auto Dial Start Pause Time Pause time before auto-dialing (second) 1 0~10
20-300 Ring On Time Ring On Time (ms) 170 90~800
20-310 Ring Off Time Ring Off Time (ms) 560 90~800
20-320 Ring Detection Freq sets the Call Indication frequency range 1 1=12-80hz
that will be detected by LIU 2=16-55hz
3=20-55hz
4=22-55hz
20-330 Ring On Max Time Ring On Max Time (ms) 5100 3000~12000
20-340 Ring Off Max Time Ring Off Max Time (ms) 11100 9000~22000
20-400 DTMF High-Freq Level DTMF High-Freq. Level (dBm) Country 0~15
Value
20-410 DTMF Low-Freq Level DTMF Low-Freq. Level (dBm) Country 0~15
Value
20-420 DTMF Timing DTMF duration of on/off output ( Ms) 8 1=80/80
2=70/70
3=70/150
4=60/60
5=80/100
6=150/50
7=150/240
8=100/100
9=100/80
20-500 Dial Mode Select Tone / Pulse Country 0=OPTION_TONE_MODE
Value 1=OPTION_PULSE_MODE

4. Troubleshooting
Code Name Description Default Range

20-520 Error Rate Adjust Error Rate ( Off / 5% / 10% / 20% ) 2 0=OPTION_RATE_OFF
1=OPTION_RATE_5
2=OPTION_RATE_10
3=OPTION_RATE_20
20-530 Dial Tone Detect detect dial tone prior to sending Country 0=OPTION_OFF
Value 1=OPTION_ON
20-540 Loop Current Detect detect if loop current is present prior to Country 0=OPTION_OFF
sending Value 1=OPTION_ON
20-550 Busy Signal Detect detect busy signal to allow redials Country 0=OPTION_OFF
Value 1=OPTION_ON
20-560 TCF Duration Adjust TCF duration (ms) 1500 1000~3000
20-800 Modem Speed Select Modem Start Speed 24
20-810 Fax Transmission Level Adjust Fax Transmission Level (dBm) Country Country Value
Value
20-830 Auto Dial Timeout Adjust Auto Dial Timeout (second) Country 30~150
Value
20-920 CNG Detection Count CNG Tone Detection check count during 2 1~15
ANS/FAX mode.
20-930 Caller ID This option is needed to guide Caller ID Country 0=OPTION_OFF
off for user environment. Value 1=OPTION_ON
20-940 Ext. Phone Ext. Phone Detection Enable/Disable 1 0=Disable
(Default : Enable 1) 1=Enable
21-999 Fax Line Setting Fax Test Line Setting(Dual Fax) 0 0 = Line 1
1 = Line 2
21-800 Modem Speed Line2 Select Modem Start Speed for Line 2 This 24
item shall be displayed only when Dual
Line Fax Kit is Installed.

4. Troubleshooting
Fax Test Routines

• Diagnostics > Fax Diagnostics > Fax Test Routines
Purpose To perform test routines for the fax machine.
Operation Procedure When the main Fax Test Routines window displays, users can navigate through the list of routines that
display along with description. Users can also input a code to the text box to find a routine directly.
After selecting one routine, pressing “OK” button will open the test window that lists selected routine.
Users can start/stop a desired test routine.
Code Name Description State Displayed

20-012 Sngl Tone 1100Hz Ln1 Emits single tone 1100Hz on line 1 On / Off
20-020 DTMF # Line1 Emits DTMF # on line 1 On / Off
20-021 DTMF * Line1 Emits DTMF * on line 1 On / Off
20-022 DTMF 0 Line1 Emits DTMF 0 on line 1 On / Off
20-040 V.21 300 bps Line1 Emits V.21 300 bps Line1 On / Off
20-041 V.27ter 2400 bps Line1 Emits V.27ter 2400 bps Line1 On / Off

4. Troubleshooting

21-020 DTMF # Line2 Emits DTMF # on line 2 On / Off
21-021 DTMF * Line2 Emits DTMF * on line 2 On / Off

4. Troubleshooting


4. Troubleshooting
4.5.5.3. Scanner Diagnostics
Shading Test
• Diagnostics > Scanner Diagnostics > Shading Test
Purpose • To check quality of scanned images, especially defect in optical devices, including lens,
mirror, lamp, and etc, are suspected.
• To check quality problem as shown below
Operation Procedure [For Platen Unit]

Press "Shade and Print report“ to see if the current shading value is correct.
Mono, red, green, blue gray shading values will be shown on the printed report.
When the previous shading value is needed, press “Print Last Shade Report”.
[For ADF(DSDF) Unit]
1) Load the shading sheet on the DSDF tray.
2) Enter SVC mdoe. Select the following menu.
(Diagnostics > Scanner Diagnostics > Shading Test > Shade and Print Report(ADF) )
(When the previous shading value is needed, press “Print Last Shade Report(ADF)”. )
3) Check if RESULTS on the sheet is OK.
NOTE
• When executing DSDF shading, use only enclosed sheet in accessory package.
• Shading Test for ADF Unit must be carried out, after replacing the DSDF unit or main board.

4. Troubleshooting
Verification
Scanner/ADF NVM Read/Write

• Diagnostics > Scanner Diagnostics > Scanner/ADF NVM Read/Write
Purpose To read and/or write values in the scanner and ADF memory.
Operation Procedure When the main “NVM Read/Write” window displays, users can navigate through the list of codes
with descriptions and saved values.
Users can also directly input a code to the text box to find a NVM.
After selecting a code, the “Edit” button will be enabled only if the code is writable.
If the selected code is writable and the “Edit” button is enabled, press the button to configure the
desired value for the code.
Verification N/A
Specification N/A
Reference N/A
Code NVM LX model GX

model
05-0000 Pick Up Count 0 O O
05-0001 Retard Roller Count 0 O O
05-0030 Simplex Regi Value(Regi1) 0 O O
05-0040 Duplex Regi Value(Regi2) 0 X O
05-0050 Width Guide Max Value Depend on ADF O O
05-0060 Width Guide Min Value Depend on ADF O O

4. Troubleshooting
Scanner/ADF Test Routines

• Diagnostics > Scanner Diagnostics > Scanner/DADF Test Routines
Purpose To perform test routines for the scanner and ADF.
Operation Procedure When the main scanner/ADF Test Routines window displays, users can navigate through the list
of routines that display along with description.
Users can also input a code to the text box to find a routine directly.
After selecting one routine, pressing “OK” button will open the test window that lists selected routine.
Users can start/stop a desired test routine.
Verification N/A
Specification N/A
Reference Table below
Code Item Value LX model GX model

06-0000 Scanner Original Size Detecting Sensor 1 High/Low O O
06-0001 Scanner Original Size Detecting Sensor 2 High/Low O O
06-0010 Scanner Cover Open/Close Sensor 1 High/Low O O
06-0011 Scanner Cover Open/Close Sensor 2 High/Low O O
06-0020 Scanner Platen Motor Forward Start/Stop O O
06-0030 Scanner Platen Motor Backward Start/Stop O O
06-0040 Scanner Platen Home Position Sensor High/Low O O
05-0000 Document Length .1 Sensor High/Low O O
05-0001 Document Length .2 Sensor High/Low O O
05-0002 Document Length .3 Sensor High/Low X O
05-0020 Document Cover Open Sensor High/Low O O
05-0040 Document Detect Sensor High/Low O O
05-0050 Document Feed Sensor High/Low X O
05-0060 Document Simplex Registration Sensor High/Low O O
05-0070 Document Scan Read Sensor1 High/Low O O
05-0071 Document Scan Read Sensor2 High/Low O O
05-0080 Document Exit Sensor High/Low O O
05-0090 Document Pick up Clutch Start/Stop O X
05-0110 Document Motor Forward Start/Stop O O
05-0111 Document Motor Backward Start/Stop O O
05-0123 Document width1 MSO Sensor High/Low X O
05-0130 Document Pickup Motor Forward Start/Stop X O
05-0131 Document Pickup Motor Backward Start/Stop X O
05-0140 Document Pickup Roller Detect Sensor High/Low O X
05-0150 Document Stacker Lift Upper Sensor High/Low X O
05-0151 Document Stacker Lift Lower Sensor High/Low X O
05-0160 Document Regi1 Motor Forward Start/Stop O O

4. Troubleshooting
Code Item Value LX model GX model

05-0162 Document Regi1 Motor Backward Start/Stop O O
05-0170 Document Regi2 Motor Forward Start/Stop X O
05-0171 Document Regi2 Motor Backward Start/Stop X O
05-0180 Document Stacker Lift Motor Forward Start/Stop X O
05-0181 Document Stacker Lift Motor Backward Start/Stop X O
05-0190 Document Width Guide ADC Sensor 10Bit (0~1023) O O
05-0210 Document Jig Test Low Speed Simplex Start/Stop O O
05-0230 Document Jig Test High Speed Simplex Start/Stop O O

4. Troubleshooting
4.5.5.4. Adjustment
Print Adjustment
• Diagnostics > Adjustment > Print Adjustment > Automatic Adjustment
Purpose To calibrate/adjust the lengths of vertical & horizontal image and image position automatically in
print engine.
Operation Procedure 1) Press “Paper Supply” button and select a tray.
2) Press “Paper Size” button and select a paper size of the previously selected tray.
3) Press “Print” button. A test pattern will be printed out.
4) Place the printed pattern on platen.
• The words “front side” on the chart face the glass
• The arrows face left edge of the platen
• Press “Scan 1”
5) Press “OK” button. Automatic scanning will occur .
6) Place the printed pattern on platen.
• The words “back side” on the chart face the glass
• The arrows face left edge of the platen
• Press “Scan 2”
7) Press “OK” button. Automatic scanning will occur .
8) The system will automatically calculate the proper value based on scanning result of the
test pattern.
9) The new values are set to the system.

4. Troubleshooting
• Diagnostics > Adjustment > Print Adjustment > Image Position

Purpose Manually adjust printed image position on paper in print engine
Operation Procedure 1) Select a tray required adjustment.
2) Change the adjustment value with ”+”, “-” then press “OK” button to save changes.
• Simplex Leading Edge
• Simplex Side Edge
• Duplex Leading Edge
• Duplex Side Edge
NOTE
• Adjustment must be done for each tray (Tray X, MP).
• It is recommended not to choose “ALL” for tray selection.
• It is always better to adjust for a particular tray at each time.
3) Print out the test pattern and check if the image is moved as you want. If not, repeat stpe2.
• Diagnostics > Adjustment > Print Adjustment > Print Test Patterns
This menu is to print out the test pattern manually.

4. Troubleshooting
Copy Adjustment
• Diagnostics > Adjustment > Copy Adjustment > Image Position
Purpose Manually adjust copied image position on paper in copy engine
Operation Procedure
NOTE
Before copy adjustment,
1) Please make sure that initial values of margin adjustment must be the same as values of print
adjustment.
2) It is recommended to perform adjustment for each tray at a time. i.e. do not select “All” for
tray selection. It often causes confusing for the adjustment.
3) The Procedure for copy adjustment is almost same as “Print Adjustment”.
NOTE
• Adjustment must be done for each tray (Tray X, MP).
• It is recommended not to choose “ALL” for tray selection.
• It is always better to adjust for a particular tray at each time.
1) Select a tray required adjustment.

2) Change the adjustment value with ”+”, “-” then press “OK” button to save changes.
• Simplex Leading Edge
• Simplex Side Edge
• Duplex Leading Edge
• Duplex Side Edge
3) Print out the test pattern and check if the image is moved as you want. If not, repeat stpe2.

4. Troubleshooting
Scan Area Adjustment

• Diagnostics > Adjustment > Scan Area Adjustment > Automatic Adjustment
Purpose To correct image position and magnification of scanned images automatically.
Operation Procedure 1) Locate the Scanner A/S Chart at the scan glass.
Note that “Lead Edge” arrows need to head to the left side of scan glass and to be placed
face down. Also note that the Scanner A/S Charts come in two sizes, A4 and Letter.
Choose one size to meet your primary size of use.
2) Press “OK” button. Automatic scanning will occur, and the system will automatically
calculate the proper value based on scanning result of the chart .
3) The new value set to the system.
4) Scan the Scanner A/S Chart and send it to a PC. Scanning must be occur from the scan glass.
5) To check the image position, compare the position of scale marks (a,b) of the chart to the
scanned image.
6) To check the magnification, compare the length of line “c” of the chart to the scanned image.
NOTE
Specification
• a,b : 10, ± 1.5 mm
• c: 190, ± 1.5 mm

4. Troubleshooting
• Diagnostics > Adjustment > Scan Area Adjustment > Manual Adjustment
Purpose To correct image position and magnification of scanned images manually.
Operation Procedure 1) Choose one item from the table. There are three items to choose.
• Image Position - Leading Edge (Unit : mm, Scale : 0.1, Min/Max : -6/+6)
• Image Position - Side Edge (Unit : mm, Scale : 0.1, Min/Max : -6/+6)
• Magnification - Vertical Direction (Unit : %, Min/Max: 98.5/101.5)
2) Select one item and press the “Edit” button.
3) Change the adjustment value with arrow button.
4) Image Position (a, b) : If the current value is smaller than the specification, press “+”.
Otherwise, press “-”.
5) Magnification (c) : If the current value is smaller than the specification, press “-”. Otherwise,
press “+”.
6) Press the “OK” button to apply the new value to the system.
7) Scan the Scanner A/S Chart and send it to a PC. Scanning must be occur from the scan glass.
scanned image.
9) To check the magnification, compare the length of line “c” of the chart to the scanned image.
NOTE
Specification
• a,b : 10, ± 1.5 mm
• c: 190, ± 1.5 mm

4. Troubleshooting
ADF Adjustment
• Diagnostics > Adjustment > ADF Adjustment > Automatic Adjustment
Purpose To correct image position and magnification of scanned images via DSDF automatically.
Operation Procedure 1) Locate the Scanner A/S chart on the DSDF tray.
2) Press “OK” button. Automatic scanning will occur, and the system will automatically
calculate the proper value based on scanning result of the chart .
3) The new value set to the system.
4) Copy the Scanner A/S Chart. Scanning must be occur from the DSDF.
copy.
6) To check the magnification, compare the length of line “c” of the chart to the copy.
NOTE
Specification
• a,b : 10, ± 1.5 mm
• c: 190, ± 1.5 mm
NOTE
After executing ADF adjustment, the shading test must be executed. (Refer to 4.5.5.3. Scanner
Diagnostics.)

4. Troubleshooting
• Diagnostics > Adjustment > ADF Adjustment > Manual Adjustment

Purpose To correct image position and magnification of scanned images manually.
Operation Procedure
NOTE
After executing ADF adjustment, the shading test must be executed. (Refer to 4.5.5.3. Scanner
Diagnostics.)
1) Choose one item from the table. There are three items to choose.
• Image Position - Leading Edge (Unit : mm, Scale : 0.1, Min/Max : -6/+6)
• Image Position - Side Edge (Unit : mm, Scale : 0.1, Min/Max : -6/+6)
• Magnification - Vertical Direction (Unit : %, , Min/Max: 98.5/101.5)
2) Select one item and press the “Edit” button.
3) Change the adjustment value with arrow button.
4) Image Position (a, b) : If the current value is smaller than the specification, press “+”.
Otherwise, press “-”.
5) Magnification (c) : If the current value is smaller than the specification, press “-”. Otherwise,
press “+”.
NOTE
Specification
• a,b : 10, ± 1.5 mm
• c: 190, ± 1.5 mm
6) Press the “OK” button to apply the new value to the system.
7) Copy the Scanner A/S Chart. Scanning must be occur from the DSDF.
copy.
9) To check the magnification, compare the length of line “c” of the chart to the copy.
10) If "Auto Skew Correction during job" box is checked, skewed image is corrected by digitally
rotating the scanned images.

4. Troubleshooting
NOTE
When this function is enabled, visual artifact (like checkerboard patterns) may appear on the
image depending on the original contents or copy option settings.
[ Reference Image ]

4. Troubleshooting
4.5.5.5. Image Management
Auto Tone Adjustment Activation

• Diagnostics > Image Management > Auto Tone Adjustment Activation > Normal
Purpose To correct image quality when density of the image is poor. Normal TRC Control is recommended to
be performed after changing a unit, such as toner cartridge, imaging unit, and ITB, and reboot.
Operation Procedure 1) Select “On” or “Off” for Normal TRC Control execution.
• If you select “Off”, Normal TRC Control will not execute.
• If you select “On”, Normal TRC Control will execute as the determined conditions.
2) Change execution condition(s) of Normal TRC Control.
• Page Count: The system executes Normal TRC Control based on the count of printed
pages since the last execution.
• Time Left Alone: The system executes Normal TRC Control when the system returns
from a power save mode and the rest time exceeds the configured value.
Verification Print out a test job and make sure the image quality has recovered.
• Diagnostics > Image Management > Auto Tone Adjustment Activation > Full
Purpose To correct image quality when any OPC drum is replaced or the life of the OPC drum is changed.
replacing any OPC drum or density of the image is poor. And this function will be performed when
temperature and/or humidity in the room changes suddenly.
Operation Procedure 1) Select “On” or “Off” for Full TRC Control execution.
• If you select “Off”, Full TRC Control will not execute.
• If you select “On”, Full TRC Control will execute as the determined conditions.
2) Change execution condition(s) of Full TRC Control.
• Page Count: The system executes Full TRC Control based on the count of printed pages
since the last execution.
• Time Left Alone: The system executes Full TRC Control when the system returns from
a power save mode and the rest time exceeds the configured value.
Verification Print out a test job and make sure the image quality has recovered.
4.5.5.6. Print Test Patterns
• Diagnostics > Print Test Patterns > Skew Pattern

The skew pattern stored in the machine will be printed out as the size you select.

4. Troubleshooting
4.5.6. Service Functions
4.5.6.1. Main Memory Clear
• Service Functions > Main Memory Clear

This function resets the main memory of the system to the factory default setting. It can be used to reset the system to the
initial value when the product is functioning abnormally. All the user configured values return to the default values.
To clear the main memory, users need to select the country of the system locates, and rebooting of the system is required.
4.5.6.2. Hard Disk Maintenance
• Service Functions > Hard Disk Maintenance > Device Configuration Data Clear
- This function formats all device configuration data, for example, user profile, address book, and devices settings,
on the hard disk.
• Service Functions > Hard Disk Maintenance > Temporary and Spool Data Clear
- This function formats all temporary and spool data saved on the hard disk.
• Service Functions > Hard Disk Maintenance > User Saved Data and Log Data Clear
- This function formats all the user data, for example, box data, pending secure jobs, font, form, macro, data related
applications, and job log, on the hard disk.
• Service Functions > Hard Disk Maintenance > All Saved Data Clear
- This function formats all the data that can be erased with 3 functions above. The function will NOT format the
hard disk entirely.
• Service Functions > Hard Disk Maintenance > Hard Disk Check
- This function checks a bad sector in the hard disk. If a bad sector is found, the system will display an error message
and send an email notification to the system administrator.
4.5.6.3. Count Setting of Large Page
• Service Functions > Count Setting of Large Page

This function sets count of large page, such as A3 and ledger size, to 1 count or 2 count of the total count.
For example, the total use of 100 A4 impressions and 100 A3 impressions will become 200 impressions if the configuration
is set to “1 Count Up” while the total will be 300 impression if the configuration is set to “2 Count Up”.

4. Troubleshooting
4.5.6.4. Network Port
• Service Functions > Network Port

This function enables/disables remote connections to the system via telnet, OSGI command shell, and SMB(samba) protocol.
This function can be used when there is a problem that requires developers to access the system or when there is a need for
developers to upload applications for a test.
Since enabling those ports can creates a risk of damaging data stored in the device, agreement of the administrator of the
customer site is necessary. The user must log in as the administrator to enable/disable the services.
4.5.6.5. Debug Log
• Service Functions > Debug Log

This function sets the system log message level. Users can select three options.
- Off : This option disables the logging option.
- Job Status: This option only enables the logging option of user created jobs.
- Details : This option enables all the logging options of the running tasks of the system. Note that this option might
create a trade-off of performance in certain system operation. Use this option when the system behaves abnormally,
and engineers need to investigate problems.
4.5.6.6. Capture Log
• Service Functions > Capture Log

This function copies all the saved log in the system to a UBS memory as a zip file. Note that the size of system log could
reach up to 1GB. If the system log size become considerably huge, it will take longer time to copy to the plugged memory.
1) Connect USB memory to device.
2) Tap “Service Mode” app. When the pop-up appears, press the area below until the passcode window appears. Eenter
“1934” and press the “OK” button.
3) Go to "Service Functions > Debug Log" and change debug log level to “DETAILS”.
4) Go to "Service Functions > Capture Log"
5) Select All or Period. When you select Period, input the start and end date.
6) Press Capture Log button.
7) Once it is completed, the message will be displayed. Then restore the debug log level to ”JOB STATUS”.
NOTE
If the system log size become considerably huge, it will take longer time to copy to the plugged memory.
8) Check is the Log file is created in the USB memory.

4. Troubleshooting
4.5.6.7. Network Packet Capture
• Service Functions > Network Packet Capture

1) Capture Packets
• Start button
a) Start to capture network packet between device and external peer mode
b) Start button shall be changed to Stop button
NOTE
The packet capture is implemented by using “tcpdump-leth0–s1200–w[filename]”
• Packet Size
- Show the file size captured
2) Export Capture File
• Export button
- Export network packet capture file to USB memory stick
3) Delete Capture File
• Delete button
- Clear network packet capture file in a device

4. Troubleshooting
4.5.6.8. System Recovery
• Service Functions > System Recovery
NOTE
There are 3 methods for entering System Recovery mode.
• In case of normal booting,

- Enter SVC mode and select System Recovery menu.
• In case of abnormal booting,

- If the HDD is broken, the machine will enter System Recovery at booting.
- When turning the machine on while pushing the power button on OP panel, you can enter System Recovery forcibly.
This function repairs or formats the HDD of the system. To use this function, a HDD image need to be saved in a USB
memory, and that USB memory needs to be plugged in the system before the execution.
NOTE
• Memory stick file system type : FAT16 or FAT32 not NTFS
• Memory stick must contain the following 3 files only.

- unix script files x 2
- HDD image file x1
1) From the system recovery UI, Choose “SYS” to recover only the system partition of the HDD or “ALL” to recover all
the partition of the HDD.
2) When the system recovery UI is appeared after reboot, choose “HDD Repair” to repair any corrupted data in the selected
partition or choose “HDD Format” to format the data in the selected partition.
a) HDD Format
• Hidden Partition : This can format and reinstall the only System Binary in HDD. User data is not deleted.
• USB : This can format the HDD using USB stick. All data except the stored in MSOK will be deleted.
• Network : This can format the HDD using network. All data except the stored in MSOK will be deleted.
b) HDD Repair : This can restore the internal system by checking the HDD error. This is for HDD recovery itself
and irrelevant to the user data in device.
3) When pushing “Next” button, the login page for authentication will be displayed. The password will be 1934 as the
factory setting password.
4) When pushing “Next” button, the following page will be displayed.
• In case of selecting USB option :

The Next button is pressed after inserting the USB stick.
The system will check for the required packages in the USB stick. If all the packages are present in the USB
stick then the system will be directed to the confirmation page otherwise an Error page will be displayed with
an appropriate error message.
• In case of selecting Network option :

This page contains two sections :
- Configure device IP address
a) Device IP: IP address for the device
b) Gateway IP: Gateway IP address for the device

4. Troubleshooting
c) Subnet Mask: Network Subnet Mask for the device

- Configure samba settings
a) Server IP : IP address of the server.
b) User ID : user ID of the server to login into the server system
c) Password : password of the server system
d) Shared folder : name of the shared folder on the server, where the packages for the system recovery
are present.
The Next button is pressed after providing the above information.
The system will establish the provided IP to the device and try to connect to the server and check for the available
packages on the server.
If Network is establish and all the packages are present in the shared folder of the server then the system will be
directed to the Confirmation page otherwise an Error page will be displayed with an appropriate error message.
5) When pushing “Next” button on option selection page, the confirmation page will be displayed.
6) When pushing “Next” button, progress page will be displayed.
7) When completing HDD Recovery or HDD Repair successfully, reboot the machine.
8) After rebooting, the machine will start the system initialization.
NOTE
If the system initialization is not executed, enter the svc mode and execute “Full memory clear”.
If not, the machine may not work normally.
9) Execute the firmware update using the one ROM FW file after system initialization. This work is a must for all FW
module level.

4. Troubleshooting
4.5.6.9. TR Control Mode
• Service Functions > TR Control Mode

Purpose To correct transfer related problems. This function can be used to change the transfer value to
optimize image quality to a certain type of paper.
Operation Procedure 1) T2 Control Mode
• Choose the paper group, paper side, and paper direction.
• Adjust PWM value based on the problem type.
• Blur : Increase PWM value
• Poor Transfer : Increase PWM value
• Re-transfer : Decrease PWM value
• White Spot : Decrease PWM value
• OPC Cyclic Ghost : Decrease PWM value
Blu r Po o r Tr a n s fe r Re t r a n s fe r
Wh it e Sp o t OPC Cyc lic Gh o s t
Verification Print out a test job and make sure the transfer problem has resolved.
Specification N/A
Reference N/A

4. Troubleshooting
4.5.6.10. Clear System Cache
• Service Functions > Clear System Cache

This function is to clear machine’s cache data for it after installing the XOA app.
4.5.6.11. Hibernation
• Service Functions > Hibernation

Hibernation mode makes the operating system image and it reduces operating time when you turn on the machine.
• ON : Hibernation mode ON
• OFF : Hibernation mode OFF
• Create New Image : Make the new Hibernation system image. When you enable the hibernation mode, you can
use this menu.
4.5.6.12. Paper Low Warning Message
• Service Functions > Paper Low Warning Message

This function enables / disables the warning message of the paper low status.
4.5.6.13. Part Replacement Alert
• Service Functions > Part Replacement Alert

This function enables / disables the alert message of the consumable’s life time.
• ON : Alert message on (Level : Low, Empty, Exhaust, Worn)

• OFF : Alert message off

4. Troubleshooting
4.5.6.14. FDI
• Service Functions > FDI

In this function, user and administrator can choose the type of FDI.
4.5.6.15. EIUL (End of Image Unit Life)
• Service Functions > EIUL

The function is to set the machine hard stop when the drum life is expired.
• Off : No machine stop @ end of drum life

• On : Machine stop @ end of drum life
4.5.6.16. SFE (Special Feature Enablement)
• Service Functions > SFE

Special Feature Enablement (SFE) means to provide the configurable options (On/Off) in service mode for technicians or
dealers to satisfy the requirements from B2B sites easily without changing the firmware installed in a device.
NOTE
The description for some codes like a 003, 020 can not be provided by HQ R&D policy.
SFE menu description

SFE Description
Code
001 In case of printing in directional media (Letterhead/Preprinted/Punched), the device prints as the same output
direction regardless of simplex or duplex.
003 confidential
006 The device supports only user's own email address for scan to email.
007 [PCL6] The device prints as original 1 dot line without 2 dot line compensation.
008 [PCL5] The device ignores paper size command in PRN and prints as paper size in tray.
009 PJL readback response is changed with HPOS.
1) Add <CR><LF> to EOJ response.
2) No EOJ job but EOJ response occurs.
3) Device uses Job name instead of EOJ name.
010 Maximum value of 'Power save time' is increased as 240 min.
012 If the device is in jam status, all print jobs except secure or stored jobs are deleted automatically.
013 The device ignores the USB memory stick and detects only card reader.
014 When the authenticated user uses scan to email, user's email address is added automatically.
015 The device supports to connect to LDAPs server without any certificate.
016 The device fits image appearance in report page
018 The device blocks apk installation.

4. Troubleshooting
SFE Description
Code
019 User ID is not case-sensitive for login
020 confidential
021 confidential
022 The device supports "A6 LEF" in original size for scan service.
023 The device rotates copy output 180 degrees when executed on flatbed.
025 confidential
026 The device maintains HDD encryption as a default.
031 The device shall store confidential/store print without image processing.
032 The device shall print line even though that has less than 1 dot.
4.5.6.17. Dealer ID
• Service Functions > Dealer ID

The SFE functions related to the dealer will be enable.
4.5.6.18. Envelope Rotate
• Service Functions > Envelope Rotate

This menu is enabling rotate when printing on envelope. The machine usually guides to load envelope with SEF direction. If
this function is enabled, the user can load envelope with LEF direction and the machine shall rotate image for printing
exactly on envelope.
This function shall provide the setting options as follows:
• Off (default) : Load envelope SEF direction

• 90 degrees : Load envelope LEF direction
• 180 degrees : Load envelope SEF direction with flap is bottom side

4. Troubleshooting
NOTE
1) If the paper source is 'Auto', the device shall feed from MP Tray. Because the LEF envelope can be loaded only in MP Tray
according to Paper Specification.
2) If the length of envelope is over max size of custom width, the device shall not rotate image and just determine the direction
of envelope is SEF.
For example, the A4 model support custom size like W 98-216 ~ L148-356. This model doesn't support C5 Env.(162x229)
DL Env.(110x220), No9 Env.(98x225), No10 Env.(105x241) rotation.
4.5.6.19. Drain
• Service Functions > Drain

This menu is recovering toner density. The device print grayed image after operating over 500 low coverage images.
This menu support to set 10 levels.
This function shall provide the setting options as follows:
• Off (default)
• On
• Black [1~10]

4. Troubleshooting
4.6. Error Code and Troubleshooting
Messages appear on the control panel display to indicate the machine’s status or errors.
NOTE
Some messages may not appear on the display depending on the options or models.

4. Troubleshooting
4.6.1. 11–2Txx (Paper mismatch error)
Error Code Error Message Troubleshooting Page

11-2T01 Load tray with [Letter], [Plain] paper P.4–69
11-2T11 Load tray 1 with [Letter], [Plain] paper P.4–69
11-2T61 Load MP with [Letter], [Plain] paper P.4–69
► Error Code
11-2T01 / 11–2T11 / 11–2T21 / 11–2T31 / 11–2T41 / 11–2T51 / 11–2T61
► Error message
Load tray with [Letter], [Plain] paper
Load tray 1 with [Letter], [Plain] paper
Load MP with [Letter], [Plain] paper
► Symptom
Paper in tray is not matched to the machine paper setting.
► Troubleshooting method
NOTE
To see the troubleshooting video for this error, click through to the link below.
• 11–2T01 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_11-2T01.html
1) Check and change the paper setting of the corresponding tray properly.

4. Troubleshooting
4.6.2. 61–1xxx (System Error)

61-1111 Booting Failure: #61-1111. Turn off then on. Call for service if the problem
P.4–70
persists
61–1Y70 Scanner Failure: #61-1Y70. Turn off then on. Call for service if the problem
P.4–70
persists
► Error Code
61–1111
► Error message
Booting Failure: #61-1111. Turn off then on. Call for service if the problem persists
► Symptom
Hibernation image creation is failed.
NOTE
(http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_61-1111.html)
1) Turn the machine on with a normal booting.
2) Enter the SVC mode. Select “Hibernation On” again.
► Error Code
61–1Y70
► Error message
Scanner Failure: #61-1Y70. Turn off then on. Call for service if the problem persists
► Symptom
Shading data is broken due to HDD/SD replacement or system format.
NOTE
(http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_61-1Y70.html)
1) Turn the machine off then on.
2) If the error persists, enter the SVC mode.
3) Execute the shading test.

4. Troubleshooting
4.6.3. A1–xxxx (Motor error)

A1-1111 Motor Failure: #A1-1111. Turn off then on. Call for service if the problem
P.4–72
persists
P.4–72
persists
P.4–73
persists
P.4–73
persists
P.4–74
persists
P.4–74
persists
P.4–75
persists
P.4–75
persists
P.4–75
persists
P.4–75
persists

4. Troubleshooting
► Error Code
A1–1111
A1–1113
► Error message
Motor Failure: #A1-1111. Turn off then on. Call for service if the problem persists.
► Symptom
Regi/MP motor does not operate. / Regi/MP motor is operating but machine recognizes status as "Stopped".
NOTE
• A1–1111 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_A1-1111.html
1) Turn the machine off then on. If the error persists, check the following.
2) Open the side cover. Check if there are any foreign substances or paper around Regi./MP unit.
3) Remove the rear cover.
4) Check the connection between the motor and main board.
5) If the connection is OK, enter SVC mode. Execute the motor test.
(Diagnostics > Engine Diagnostics > Engine Test Routines)
a) If the motor is not operational,
i) Check the motor signal(3.3V). If the signal is abnormal, replace the main board.
ii) Check the power(24V). If the power is abnormal, check the SMPS board. If the SMPS board is defective,
replace it.
iii) If the motor signal and power is normal, replace the Feed/MP motor.
b) If the motor is operational, replace the main board.

4. Troubleshooting
► Error Code
A1–1211
A1–1213
► Error message
► Symptom
Fuser motor does not operate. / Fuser motor is operational but machine recognizes status as stopped.
NOTE
2) Open the side cover. Check if there are any foreign substances or paper around fuser unit.
4) Check the connection between the motor and main board.
replace it.
iii) If the motor signal and power is normal, replace the Fuser/Exit motor.

4. Troubleshooting
► Error Code
A1–2111
A1–2113
► Error message
► Symptom
OPC motor does not operate. / OPC motor is operational but machine recognizes status as stopped.
NOTE
2) Remove the drum unit. Check if there are any foreign substances in drum unit.
4) Check the connection between the OPC motor and main board.
replace it.
iii) If the motor signal and power is normal, replace the OPC motor.

4. Troubleshooting
► Error Code
A1–5113
A1–5512
A1–5513
A1–5610
► Error message
► Symptom
The motor related to toner supply has a problem.
NOTE
• A1–5113 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_A1-5113.htm
1) Turn the machine off then on. If the error persists, check the following steps.
2) Enter the SVC mode. Select the toner supply motor test.
i) Check the power(24V). If the power is abnormal, check the SMPS board. If the SMPS board is defective,
replace it.
ii) If the SMPS board is normal, replace the main board.
iii) If the error persists after replacing the main board, replace the toner supply motor.
b) If the motor is operational,
i) Check the toner cartridge remains. If necessary, replace the toner cartridge.
ii) If the toner cartridge remains is enough, replace the drum unit.

4. Troubleshooting
4.6.4. A2–xxxx (Fan error)

A2-1510 Fan Failure: #A2-1510. Turn off then on. Call for service if the problem
P.4–77
persists
P.4–77
persists
A2-1521 Fan Failure: #A2-1521. Open the door, then close it. Call for service if the
P.4–77
problem persists
P.4–77
problem persists
P.4–77
persists
P.4–77
persists
P.4–77
problem persists
P.4–77
problem persists
P.4–77
persists
P.4–77
persists
P.4–77
problem persists
P.4–77
problem persists

4. Troubleshooting
► Error Code
A2–1510 / A2–1511 / A2–1521 / A2–1523
A2–2810 / A2–2811 / A2–2821 / A2–2823
A2–2910 / A2–2911 / A2–2920 / A2–2921
► Error message
Fan Failure: #A2-xxxx. Turn off then on. Call for service if the problem persists
Fan Failure: #A2-xxxx. Open the door, then close it. Call for service if the problem persists
► Symptom
Fan does not operate or fan signal is abnormal.
NOTE
• Duplex fan error : A2–1510 / A2–1511 / A2–1521 / A2–1523
• Deve fan error : A2–2810 / A2–2811 / A2–2821 / A2–2823
• OPC blow-in fan error : A2–2910 / A2–2911 / A2–2920 / A2–2921
1) Turn the machine off then on. If the problem persists, check the followings.
2) Check the connection of the corresponding fan and main board.
3) If the connection is OK, enter SVC mode. Execute the fan test.
a) If the fan is not operational,
i) Check the power(24V).
• If the power is abnormal, check the SMPS board. If the SMPS board is defective, replace it.
• If the SMPS board is normal, replace the corresponding fan.
• If the error persists after replacing the fan, replace the main board.
b) If the fan is operational,
i) Check the fan signal (3.3V) as connected or disconnected.
• If the fan signal as disconnected is abnormal, replace the main board.
• If the fan signal as connected is abnormal, replace the corresponding fan.

4. Troubleshooting
4.6.5. A3–xxxx (Sensor error)

A3-2113 The CTD sensor is dirty. Please clean it with soft cloth or paper P.4–78
A3-3111 Sensor Failure: #A3-3111. Turn off then on. Call for service if the problem
P.4–79
persists
P.4–79
persists
P.4–79
persists
P.4–79
persists
P.4–80
persists
P.4–80
persists
P.4–80
persists
P.4–80
persists
P.4–80
persists
P.4–80
persists
► Error Code
A3–2113
► Error message
The CTD sensor is dirty. Please clean it with soft cloth or paper.
► Symptom
CTD sensor window is contaminated.
NOTE
If the pop up window for cleaning is displayed, follow it.
1) Open the side cover.
2) Clean the sensor window with a soft cloth.
3) Close the side cover.
4) Enter SVC mode. Select the “CTD Sensor Cleaning”

(Diagnostics Image Management > Auto Color Tone Adjustment Condition > CTD Sensor Cleaning)
5) When pop up appears, select the “Yes” button.

4. Troubleshooting
NOTE
a) CTD sensor calibration will start. Then “CTD sensor failure” error will be solved
b) If you don’t execute the CTD sensor cleaning in SVC mode, error message persists.
► Error Code
A3–3111 / A3–3112 / A3–3113 / A3–3114
► Error message
Sensor Failure: #A3-3111. Turn off then on. Call for service if the problem persists
► Symptom
The NC sensor in the fuser unit is defective. / The sensor signal is abnormal due to a defective harness.
NOTE
• A3–3111 : Center NC sensor is in short status.
• A3–3112 : Center NC sensor is in open status.
• A3–3113 : Side NC sensor is in short status.
• A3–3114 : Side NC sensor is in open status.
1) Turn the machine off then on. If the problem persists, check the followings.
2) Enter SVC mode. Execute the fuser temperature test

a) If the temperature test is failed, replace the fuser unit.
b) If the temperature test is normal, replace the main board.

4. Troubleshooting
► Error Code
A3–3310 / A3–3311 / A3–3312
A3–3410 / A3–3411 / A3–3412
► Error message
► Symptom
Outer temperature/humidity sensor is defective.
NOTE
• A3–3310 / A3–3311 / A3–3312 : Temperature function is abnormal.
• A3–3410 / A3–3411 / A3–3412 : Humidity function is abnormal.
2) Check the connection between the outer temp sensor and main board. If the connection is OK, replace the outer
temp sensor .
3) If the sensor is normal, replace the main board.

4. Troubleshooting
4.6.6. C1–xxxx (Toner cartridge error)

C1-1110 Prepare new toner cartridge P.4–82
C1-1130 Replace with new toner cartridge P.4–82
C1-1140 End of life, Replace with new toner cartridge P.4–82
C1-1311 Toner Cartridge Failure: #C1-1311. Install toner cartridge again P.4–82
C1-1411 Toner cartridge is not installed. Install the cartridge P.4–83
C1-1512 Toner cartridge is not compatible. Check users guide P.4–83

4. Troubleshooting
► Error Code
C1–1110
► Error message
Prepare new yellow toner cartridge.
► Symptom
Toner remained is 5 ~ 30% of its life.
1) Order new toner cartridge because toner cartridge with level of “Low” will be exhausted soon.
► Error Code
C1–1130 / C1–1140
► Error message
Replace with new toner cartridge
End of life, Replace with new toner cartridge
► Symptom
The toner cartridge is at the end of its life.
1) Open the front cover.
2) Remove the toner cartridge.
3) Install the new toner cartridge.
4) Close the toner cartridge.
► Error Code
C1–1311
► Error message
Toner Cartridge Failure: #C1-1311. Install toner cartridge again
► Symptom
Toner supply is inefficient or abnormal.
NOTE
(http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_C1-1311.html)
1) Turn the machine off. Open the front cover
2) Remove the toner cartridge. Shake the toner cartridge horizontally to distribute the toner evenly inside the cartridge.
3) If the problem persists, check the follows.

a) Check if the Toner Supply Drive Unit is defective. Replace it.
b) If the problem persists, replace the toner cartridge.
c) If the problem persists, replace the drum unit.

4. Troubleshooting
► Error Code
C1–1411
► Error message
Toner cartridge is not installed. Install it.
► Symptom
The toner cartridge is not installed. / The CRUM data is not detected.
NOTE
1) Open the front cover. Check if the toner cartridge is installed.
2) Remove and reinstall the toner cartridge.
3) If the problem persists, check if the toner cartridge modular jack is contaminated or deformed.
4) Replace the toner cartridge with a new one.
► Error Code
C1–1512
► Error message
Toner cartridge is not compatible. Check users guide.
► Symptom
Toner cartridge is not compatible.
1) Open the front cover. Remove the toner cartridge and re-install it.
2) Print the supply information report. Check the toner cartridge information.
3) If the toner cartridge is not a Samsung genuine, replace it with a new one.

4. Troubleshooting
4.6.7. C3–xxxx (Drum unit error)

C3-1110 Prepare new imaging unit P.4–84
C3-1130 Replace with new imaging unit P.4–84
C3-1140 End of life, Replace with new imaging unit P.4–84
C3-1211 Imaging Unit Failure: #C3-1211. Please turn off then on P.4–85
C3-1312 Imaging Unit Failure: #C3-1312. Install imaging unit again P.4–85
C3-1411 Imaging unit is not installed. Install the unit P.4–86
C3-1430 Clean the paper dust stick P.4–86
C3-1512 Imaging unit is not compatible. Check users guide P.4–86
C3–5414 Imaging Unit Failure: #C3-5414. Install imaging unit again P.4–87
► Error Code
C3–1110
C3–1130
C3–1140
► Error message
Prepare new imaging unit
Replace with new imaging unit.
► Symptom
The Imaging unit has almost reached the end of life.
1) Open the front cover and remove the waste toner container.
2) Remove the drum unit.
3) If its life is at the end, replace the drum unit with new one.

4. Troubleshooting
► Error Code
C3–1211
► Error message
Imaging Unit Failure:#C3-1211. Please turn off then on.
► Symptom
Sensor calibration error that detects the toner density for image stabilization control has occurred.
NOTE
► Error Code
C3–1312
► Error message
Imaging Unit Failure: #C3-1312. Install imaging unit again
► Symptom
TC sensor value in Deve unit is abnormal.
NOTE
2) Remove the waste toner container.
3) Check if the connector of the Deve unit is connected correctly.
4) Check if the 4 pin is deformed.
5) If the connector is OK, replace the Deve unit.
6) If the waste toner is full, replace it.

4. Troubleshooting
► Error Code
C3–1411
► Error message
Imaging unit is not installed. Install the unit.
► Symptom
The imaging unit is not installed. / The data of CRUM is not detected.
NOTE
( ebview/EN_K7_C3-1411.html)
► Error Code
C3–1430
► Error message
Clean the paper dust stick
► Symptom
OPC cleaning error has occurred.
2) Pull the paper dust stick out.
3) Remove the paper dust. Then, insert the paper dust stick back.
(Refer to “Cleaning the paper dust stick”.)
► Error Code
C3–1512
► Error message
Imaging unit is not compatible. Check user's guide
► Symptom
Imaging unit is not compatible.

4. Troubleshooting
► Error Code
C3–5414
► Error message
Imaging Unit Failure: #C3-5414. Install imaging unit again
► Symptom
The machine can’t read the charge roller resistance of the drum unit.
NOTE
2) Remove the waste toner container.
4) Remove the drum unit after loosing 1 screw.
5) If there is the contamination or foreign substance of the contact plate in drum unit, clean it.
6) Check if both screws of the charge roller tighten.
7) If there is no problem, replace the drum unit.
8) If the problem, persists, replace the HVPS board.

4. Troubleshooting
4.6.8. C6–xxxx (Fuser unit error)

C6-1120 Replace with new fuser unit P.4–88
C6-1310 Fuser unit is not installed. Install it P.4–88
► Error Code
C6–1120
► Error message
Replace with new fuser unit
► Symptom
The life of the fuser unit has expired.
1) Turn the machine off.
2) Replace the fuser unit.
3) Turn the machine on.
► Error Code
C6–1310
► Error message
Fuser unit is not installed. Install it.
► Symptom
The fuser unit is not installed or fuser unit connector is not connected properly.
NOTE
2) If the problem persists, turn the machine off again.
3) Open the side cover. Check if the fuser unit is installed. If not, install the fuser unit.
4) If the fuser unit is installed, remove it.
5) Check if the fuser draw connector is broken or defective.
6) Install the fuser unit.
7) If the problem persists, replace the fuser unit.
CAUTION
The temperature gets high in the vicinity of the fuser unit. When replacing it, you may get burned. Before replacing
it, make sure that fuser unit has cooled.

4. Troubleshooting
4.6.9. C7–xxxx (Waste toner container error)

C7-1110 Waste toner container is almost full. Order new one P.4–89
C7-1130 Waste toner container is full. Replace it P.4–89
C7-1311 Waste toner container is not installed. Install it P.4–90
► Error Code
C7–1110
C7–1130
► Error message
Waste toner container is almost full. Order new one.
Waste toner container is full. Replace it.
► Symptom
The life of the waste toner container expires soon or has expired.
2) Replace the waste toner container with new one.
3) Close the front cover.

4. Troubleshooting
► Error Code
C7–1311
► Error message
Waste toner container is not installed. Install it.
► Symptom
The waste toner container is not installed.
NOTE
1) Open the front cover and check the waste toner container is installed correctly.
2) Check the waste toner container sensor operates correctly.
3) If the waste toner container sensor is defective, replace it.
4) If the problem persists, replace the waste toner container with new one.

4. Troubleshooting
4.6.10. C8–xxxx (Developer error)

C8-1130 Replace with new developer unit P.4–91
► Error Code
C8–1130
► Error message
Replace with new magenta developer unit
► Symptom
The life of the developer unit has expired.
NOTE
3) Replace the deve unit.

4. Troubleshooting
4.6.11. C9–xxxx (Transfer Belt error)

C9-2110 Prepare new transfer roller P.4–92
C9-2120 Replace with new transfer roller P.4–92
C9-2220 TR Failure: #C9-2220. Install transfer roller again P.4–93
► Error Code
C9–2110
C9–2120
► Error message
Prepare new transfer roller
Replace with new Transfer roller.
► Symptom
Transfer belt (PTB) is at the end of its life.
NOTE
• C9–2110 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_C9-2110.html
• C9–2120 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_C9-2120.html
1) Open the side-cover.
2) Replace the PTB unit.

4. Troubleshooting
► Error Code
C9–2220
► Error message
TR Failure: #C9-2220. Install transfer roller again.
► Symptom
The resistance value of the transfer roller is abnormal.
NOTE
2) Replace the PTB unit.
3) If the problem persists, replace the HVPS board.

4. Troubleshooting
4.6.12. H1–xxxx (Double Cassette Feeder Unit Error)

H1-1311 Paper jam in Tray 3 P.4–95
H1-1314 Paper jam inside of machine P.4–95
H1-1322 Tray 3 cassette is pulled out. Insert it properly P.4–97
H1-1351 Paper is low in Tray 3. Load paper P.4–98
H1-1352 Paper is empty in Tray 3. Load paper P.4–98
H1-1353 Input System Failure: #H1-1353. Pull Tray 3 out and insert it P.4–99
H1-1354 Paper is empty in tray 3. Load paper P.4–98
H1-1422 Tray 4 cassette is pulled out. Insert it properly P.4–102
H1-1451 Paper is low in Tray 4. Load paper P.4–103
H1-1452 Paper is empty in Tray 4. Load paper P.4–103
H1-1453 Input System Failure: #H1-1453. Pull Tray 4 out and insert it P.4–104
H1-1454 Paper is empty in tray 4. Load paper P.4–103
H1-5323 Tray door is open. Close the door P.4–105
H1-5330 DCF Failure: #H1-5330. Check internal DCF connection P.4–106

4. Troubleshooting
► Error Code
H1-1311 / H1–1312 / H1–1313 / H1–1314 / H1–1315 / H1–1317 / H1–1318
► Error message
Paper jam in Tray 3.
► Symptom
Paper jam has occurred in tray3. (Pick up unit connection is defective. / Pickup rollers are defective. / pre Feed
sensor is defective.)
1) Open the DCF Take Away-Cover. Remove the jammed paper.
2) Remove tray3. Remove the jammed paper. Close the DCF Take Away-Cover and insert tray3.
3) If this jam error occurs frequently, check the rollers below.

a) Remove the tray3 and tray4.
b) Check if the pick up/ reverse/ forward rollers are assembled correctly.
c) If the pick up/ reverse/ forward rollers are worn out or contaminated, replace the defective roller.
4) If pick up/ reverse/ forward rollers have no problem, check the following.
a) Remove the DCF pick up unit1. Check if the pre feed sensor cable is connected correctly.
b) Check if the sensor cable on DCF PBA is connected correctly.
c) If the connection is OK, replace the pre feed sensor(0604-001490).
d) Install the DCF pick up unit1.
5) If the problem persists after checking step 3~4, check the following :
a) Remove the DCF pick up unit1. Check if the sensor and actuator are assembled correctly.
b) When pushing the pickup lever, check if the pick up rollers are down.
c) Replace the DCF pick up unit1(JC93-01087A) or defective part.
6) Check the DCF feed motor.

a) Check if the DCF feed motor cable is connected correctly.
b) If the connection is OK, replace the DCF feed drive unit(JC93-01135A).
7) Check the DCF pick up motor.

4. Troubleshooting
a) Check if the DCF pick up motor cable is connected correctly.

b) If the connection is OK, replace the DCF pick up drive unit(JC93-01063A).

4. Troubleshooting
► Error Code
H1-1322
► Error message
Tray 3 cassette is pulled out. Insert it properly.
► Symptom
Tray 3 is pulled out or the auto size sensor connector is not connected or broken.
1) Remove and insert tray3 correctly.
2) If the problem persists, remove tray3 and tray4. Look inside machine.
3) Check if the auto size sensor cable is connected correctly. Unplug and reconnect it.
4) If the connection is OK, replace the auto size sensor(JC32-00013A).
5) If the problem persists, replace the DCF PBA(JC92-02738A).

4. Troubleshooting
► Error Code
H1-1351 / H1–1352 / H1–1354
► Error message
Paper is low in Tray 3. Load paper.
Paper is empty in Tray 3. Load paper.
► Symptom
Paper in the tray is less than 10% of specification. / The photo sensor is defective.
1) Remove tray3. Load the paper in tray3.
2) If paper is loaded but error message has not disappeared, check the following.
a) Remove the DCF pick up unit1.
b) Check if the photo sensor in the DCF pick up unit1 is contaminated. If so, clean it.
c) If the photo sensor(0604-001393) is defective, replace it.
d) If the actuator(JC66-04399A) is defective, replace it.

4. Troubleshooting
► Error Code
H1-1353
► Error message
Input System Failure #H1-1353 : Pull Tray 3 out and insert it.
► Symptom
The paper is not fed from tray3.
3) If the problem persists, turn the machine off.
4) Remove the Rear Cover.
5) Check if the connection between the DCF pick up drive unit and DCF PBA is correct.
6) If the connection is OK, replace the pick up drive unit(JC93-01063A).
7) If the problem persists, check the following.

b) Check if the photo sensor in the DCF pick up unit1 is contaminated, clean it.

4. Troubleshooting
► Error Code
H1-1411 / H1–1412 / H1–1417 / H1–1418
► Error message
► Symptom
Paper jam has occurred in tray4. (Pick up unit connection is defective. / Pickup rollers are defective. / Pre Feed
1) Open the DCF Take Away-Cover. Remove the jammed paper.
2) Remove tray4. Remove the jammed paper. Close the DCF Take Away-Cover and insert tray4.

a) Remove tray3 and tray4.
a) Remove the DCF pick up unit2. Check if the feed sensor cable is connected correctly.
b) Check if the sensor cable on DCF PBA is connected correctly.
d) Install the DCF pick up unit2.
a) Remove the DCF pick up unit2. Check if the sensor and actuator are assembled correctly.
c) Replace the DCF pick up unit2(JC93-00513A) or defective part.
6) Check the DCF feed motor.

a) Check if the DCF feed motor cable is connected correctly.
b) If the connection is OK, replace the DCF feed drive unit(JC93-01135A).
7) Check the DCF pick up motor.

4. Troubleshooting
a) Check if the DCF pick up motor cable is connected correctly.

b) If the connection is OK, replace the DCF pick up drive unit(JC93-01063A).

4. Troubleshooting
► Error Code
H1-1422
► Error message
► Symptom
Tray 4 is pulled out or the auto size sensor connector is not connected or is broken.
2) If the problem persists, remove tray3 and tray4. Look inside machine.
3) Check if the auto size sensor cable is connected correctly. Unplug and reconnect it.
4) If the connection is OK, replace the auto size sensor(JC32-00013A).
5) If the problem persists, replace the DCF PBA(JC92-02738A).

4. Troubleshooting
► Error Code
H1–1451 / H1–1452 / H1–1454
► Error message
► Symptom
Paper in tray4 is less than 10%. / The photo sensor is defective.
1) Remove tray4. Load the paper in tray4.

4. Troubleshooting
► Error Code
H1-1453
► Error message
► Symptom
5) Check if the connection between the DCF pick up drive and DCF PBA is correct.
6) If the connection is OK, replace the pick up drive unit(JC93-00442A).


4. Troubleshooting
► Error Code
H1-5323
► Error message
Tray door is open. Close the door
► Symptom
DCF Takeaway-Cover is open. / I/L-Switch harness or connector is defective.
1) Open and close the DCF Take away-Cover correctly.

a) Check if I/L-Switch(HARNESS-DCF COVER OPEN)(JC39–02268A) is not operating normally. If it is
defective, replace it.
b) If the I/L Switch is OK, replace the DCF PBA(JC92–02738A).

4. Troubleshooting
► Error Code
H1-5330
► Error message
DCF Failure #H1-5330. Check internal DCF connection.
► Symptom
A communication error between the optional tray and the main machine has occurred.
1) Lift up and release the DCF unit from the machine.
3) Check if the interface connector is connected to the DCF PBA. If the interface connector(JC39–02276A) is
defective, replace it.
4) If the problem persists, replace the DCF PBA.

4. Troubleshooting
4.6.13. H1–xxxx (High Capacity Feeder Unit Error)

H1-2311 Paper Jam in tray 3. After open the door & remove paper, Close the door P.4–108
H1-2320 HCF 3 door is open. Close it P.4–110
H1-2322 HCF 3 cassette is pulled out. Insert it properly P.4–110
H1-2330 Input System Failure: #H1-2330. Check HCF 3 connection P.4–110
H1-2351 Paper is low in HCF 3. Load paper P.4–111
H1-2352 Paper is empty in HCF 3. Load paper P.4–111
H1-2353 Input System Failure #H1-2353 : Pull HCF 3 out and insert it P.4–112

4. Troubleshooting
► Error Code
H1-2311 / H1–2312 / H1–2313 / H1–2317 / H1–2318
► Error message
Paper Jam in tray 3. After open the door & remove paper, Close the door
► Symptom
Paper jam has occurred in HCF tray. (Pick up unit connection is defective. / Pickup rollers are defective. / pre feed
1) Open the HCF Take Away-Cover. Remove the jammed paper.
2) Remove HCF tray. Remove the jammed paper. Close the HCF Take Away-Cover and insert HCF tray.

a) Remove the HCF tray.
a) Remove the HCF pick up unit. Check if the pre feed sensor cable is connected correctly.
b) Check if the sensor cable on HCF PBA is connected correctly.
d) Install the HCF pick up unit.
a) Remove the HCF pick up unit. Check if the sensor and actuator are assembled correctly.
c) Replace the HCF pick up unit(JC93-01139A) or defective part.
6) Check the HCF feed motor.

a) Check if the HCF feed motor cable is connected correctly.

4. Troubleshooting
b) If the connection is OK, replace the HCF feed drive unit(JC93-01114A).
7) Check the HCF pick up motor.

a) Check if the HCF pick up motor cable is connected correctly.
b) If the connection is OK, replace the HCF pick up drive unit(JC93-01115A).

4. Troubleshooting
► Error Code
H1-2320
► Error message
Tray 3 door is open. Close it.
► Symptom
HCF Takeaway-Cover is open. / Side door open switch harness or connector is defective.
1) Open and close the HCF Take away-Cover correctly.
2) Check if the side door open switch is connected correctly. Unplug and reconnect it.
3) If the connection is OK, replace the side door open switch(JC39-02279A).
4) If the problem persists, replace the HCF PBA(JC92-02738B).
► Error Code
H1-2322
► Error message
► Symptom
HCF Tray is pulled out or the Tray insertion sensor connector is not connected or broken.
1) Remove and insert HCF tray correctly.
2) If the problem persists, remove HCF tray. Look inside machine.
3) Check if the tray insertion sensor is connected correctly. Unplug and reconnect it.
4) If the connection is OK, replace the tray insertion sensor(0604–001393).
5) If the problem persists, replace the HCF PBA(JC92-02738B).
► Error Code
H1-2330
► Error message
Tray Failure: #H1-2330. Check tray 3 connection & turn off then on. Call for service if the problem persists
► Symptom
A communication error between the optional tray and the main machine has occurred.
3) Check the connection of HCF PBA. If the interface connector is defective, replace it.
4) If the problem persists, replace the HCF PBA.

4. Troubleshooting
► Error Code
H1-2351 / H1–2352
► Error message
► Symptom
Paper in the HCF tray is less than 10% of specification. / The photo sensor is defective.
1) Remove HCF tray. Load the paper in HCF tray.
a) Remove the HCF pick up unit.
b) Check if the photo sensor in the HCF pick up unit is contaminated. If so, clean it.

4. Troubleshooting
► Error Code
H1-2353
► Error message
Tray Failure: #H1-2353. Pull tray 3 out and insert it. Call for service if the problem persists
► Symptom
The paper is not fed from HCF tray.
1) Remove and insert HCF tray correctly.
5) Check if the connection between the HCF pick up drive unit and HCF PBA is correct.
6) If the connection is OK, replace the HCF pick up drive unit(JC93-01115A).

a) Remove the HCF pick up unit.
b) Check if the photo sensor in the HCF pick up unit is contaminated, clean it.

4. Troubleshooting
4.6.14. H1–xxxx (High Capacity Feeder Side Unit(LCT Unit) Error)

H1-4420 Tray 4 door is open. Close it P.4–116
H1-4422 Tray 4 cassette is pulled out. Insert it properly. P.4–117
H1-4430 Tray Failure: #H1-4430. Check tray 4 connection P.4–118
H1-4451 Paper is low in Tray 4. Load paper. P.4–119
H1-4452 Paper is empty in Tray 4. Load paper. P.4–119
H1-4453 Input System Failure #H1-4453 : Pull Tray 4 out and insert it. P.4–120
H1-4513 Paper jam in Tray 5. P.4–114
H1-4517 Paper jam in Tray 5. P.4–114
H1-4520 Tray 5 door is open. Close it P.4–116
H1-4522 Tray 5 cassette is pulled out. Insert it properly. P.4–117
H1-4530 Tray Failure: #H1-4530. Check tray 5 connection P.4–118
H1-4551 Paper is low in Tray 5. Load paper. P.4–119
H1-4552 Paper is empty in Tray 5. Load paper. P.4–119
H1-4553 Input System Failure #H1-4553 : Pull Tray 5 out and insert it. P.4–120

4. Troubleshooting
► Error Code
H1-4411 / H1–4412 / H1–4413 / H1–4417 / H1–4418 (HCF+LCT)
H1-4511 / H1–4512 / H1–4513 / H1–4517 / H1–4518 (DCF+LCT)
► Error message
► Symptom
Paper jam has occurred in LCT. (Pick up unit connection is defective. / Pickup rollers are defective. / Feed sensor
is defective.)
1) Open the LCT Top Cover. Remove the jammed paper. And, close the LCT Top Cover.

a) Open the LCT Top Cover.
c) If the pick up/ reverse/ forward rollers are worn out or contaminated, replace the defective roller(JC93–01091A).
a) Remove the LCT pick up unit. Check if the feed sensor cable is connected correctly.
b) Check if the sensor cable on LCT board is connected correctly.
c) If the connection is OK, replace the feed sensor(0604-001490).
d) Check if the sensor and actuator are assembled correctly.
e) Install the LCT pick up unit.
4) Check the LCT feed motor and pick-up motor.

a) Check if the LCT feed motor and pick-up motor cables are connected correctly.

4. Troubleshooting
b) If the connection is OK, replace the LCT feed drive unit(JC93-01112A).

4. Troubleshooting
► Error Code
H1-4420
H1-4520
► Error message
Tray 4 door is open. Close it
Tray 5 door is open. Close it
► Symptom
LCT Top Cover is open. / I/L-Switch harness or connector is defective.
1) Open and close the LCT Top Cover correctly.

a) Check if I/L-Switch(Top Door Open Switch)(JC39-02346A) is not operating normally. If it is defective,
replace it.
b) If the Top Door Open Switch is OK, replace the LCT PBA(JC92-02738C).

4. Troubleshooting
► Error Code
H1-4422
H1-4522
► Error message
► Symptom
LCT is pulled out or installation detect sensor is not connected or broken.
1) Detach and Attach the LCT
2) If the problem persists, detach LCT and check inside machine.
3) Remove the Front Cover and Rear Cover. Check the connection of the installation detect sensors. And, unplug
and reconnect it.
4) If the connection is OK, replace the installation detect sensor (0604-01393).
5) If the problem persists, replace the LCT PBA (JC92–02738C).

4. Troubleshooting
► Error Code
H1-4430
H1-4530
► Error message
Tray Failure: #H1-4430. Check tray 4 connection
Tray Failure: #H1-4530. Check tray 5 connection
► Symptom
A communication error between the LCT and the main machine has occurred.
2) Remove the LCT Cover-Right and LCT Cover-Rear.
3) Check the connection of LCT PBA. If the interface connector(JC39–02294A) is defective, replace it.
4) If the problem persists, replace the LCT PBA.

4. Troubleshooting
► Error Code
H1-4451 / H1–4452
H1-4551 / H1–4552
► Error message
Paper is low in Tray 4. Load paper. / Paper is empty in Tray 4. Load paper.
Paper is low in Tray 4. Load paper. / Paper is empty in Tray 4. Load paper.
► Symptom
Paper in the LCT is less than 20% of specification. / The photo sensor is defective.
1) Open the LCT Top Cover. Load the paper in LCT.
a) Remove the LCT pick up unit.
b) Check if the photo sensor in the LCT pick up unit1 is contaminated. If so, clean it.

4. Troubleshooting
► Error Code
H1-4453
H1-4553
► Error message
► Symptom
The paper is not fed from the LCT.
3) Remove the Cover-Right and Cover-Rear after removing 16 screws.
4) Check if the connection between the LCT pick up drive and LCT PBA is correct.
5) If the connection is OK, replace the drive unit(JC93–01112A).

a) Remove the LCT pick up unit.
b) Check if the photo sensor in the LCT pick up unit is contaminated, clean it.

4. Troubleshooting
4.6.15. H2–xxxx (Finisher error)
NOTE
For H2–xxxx type error, refer to the Finisher Service Manual.
NOTE
• H2-6xxx : Inner Finisher (Refer to SL-FIN501L Service Manual.)
• H2-7xxx : 3K Finisher (Refer to SL-FIN701B/H Service Manual.)
• H2-8xxx : Booklet (Refer to SL-FIN701B/H Service Manual.)

4. Troubleshooting
4.6.16. Mx–xxxx (Jam error)

M1-1113 Paper jam in tray 1 P.4–123
M1–1121 Paper jam in tray 2 P.4–124
M1-1610 Paper jam in MP tray P.4–125
M1-1613 Paper jam in MP tray P.4–125
M2–1114 Paper jam inside of machine P.4–126
M2–1117 Paper jam at the bottom of duplex path P.4–126
M2-1125 Paper jam inside of machine P.4–127
M2-1213 Paper Mismatch at tray. Load tray with setting paper, and remove the jammed
P.4–129
paper
M2-1333 Check whether the pieces of paper remain in the paper path P.4–130
M2-2111 Paper jam at the top of duplex path P.4–131
M2–2112 Paper jam at the top of duplex path P.4–131
M2-2114 Paper jam at the top of duplex path P.4–131
M3-1411 Paper jam in exit area P.4–132
M3–1412 Paper jam inside of machine P.4–132
M3-1414 Paper jam in exit area P.4–132

4. Troubleshooting
► Error Code
M1–1113
► Error message
► Symptom
Paper jam has occurred in tray1.
NOTE
(http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_M1-1113.html)
1) Open the side cover and check if a foreign substance or paper is jammed inside the machine.
2) Remove tray1 and remove the jammed paper.
3) If this jam error occurs frequently, check the rollers of the pick up unit1.
4) If the problem persists, check the pick-up unit1.

a) Check if the pre-feed sensor is connected correctly. If the sensor is defective, replace it.
b) If there is any defective part in pick-up unit 1, replace it or pick up unit 1.
5) If the problem persists, replace the pickup drive unit 1.

4. Troubleshooting
► Error Code
M1–1211 / M1–1213
► Error message
► Symptom
Paper jam has occurred in tray2.
NOTE
• M1–1211 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_M1-1211.html
1) Open the side cover and check if a foreign substance or paper is jammed inside the machine.
2) Remove tray2 and remove the jammed paper.
3) If this jam error occurs frequently, check the rollers of the pick up unit2.
4) If the problem persists, check the pick-up unit2.

a) Check if the pre-feed sensor is connected correctly. If the sensor is defective, replace it.
b) If there is any defective part in pick-up unit 2, replace it or pick up unit 2.
5) If the problem persists, replace the pickup drive unit 2.

4. Troubleshooting
► Error Code
M1–1610 / M1–1613
► Error message
Paper jam in MP Tray.
► Symptom
Paper jam has occurred in MP tray.
NOTE
1) Open the side cover. Remove the jammed paper from the MP tray.
2) If this jam error occurs frequently, check the rollers of the MP unit.
a) Check if MP pick up/ reverse/ forward rollers are assembled correctly.
b) If the MP pick up/ reverse/ forward rollers are worn out or contaminated, replace the defective roller.
3) If the problem persists, check if the MP solenoid operates correctly.

a) Enter SVC mode. Execute MP solenoid test.
b) If the MP solenoid operation is abnormal, check the harness connection of MP unit.
c) If the harness has no defects, replace the MP solenoid.
4) If the problem persists, check the Feed/MPdrive unit.

a) Enter SVC mode. Execute Feed/MP motor test.
b) Remove the rear cover.
c) Check if the motor harness is connected correctly.
d) If the problem occurs, replace the Feed/MP Drive Unit.

4. Troubleshooting
► Error Code
M2–1114 / M2–1117
► Error message
Paper jam inside of machine
Paper jam at the bottom of duplex path
► Symptom
Paper jam has occurred inside the machine.
NOTE
• M2–1114 : The paper has not left from the feed sensor within the specified time.
• M2-1117 : The paper passed duplex path has not reached the feed sensor within the specified time.
1) Open the side cover. Remove the jammed paper.
2) If jammed paper occurs continually, check the following.

a) Enter SVC mode. Execute the feed 1 sensor test.
b) Check connection between the feed 1 sensor and main board.
c) If the connection is OK, replace the feed 1 sensor.
d) If the feed 1 sensor is normal, check the feed motor.
e) Execute feed motor test.
f) Check if the feed motor cable is connected correctly.
g) If the connection is OK, replace the feed/MP drive unit.

4. Troubleshooting
► Error Code
M2–1121 / M2–1124 / M2–1125
► Error message
Paper jam in tray 1
Paper jam inside of machine.
► Symptom
NOTE
• M2–1121 : The paper is detected by feed 1 sensor.
• M2–1124 : The leading edge of the paper has not reached the feed 1 sensor within the specified time.
• M2-1125 : The paper has not left from the feed 1 sensor within the specified time.


4. Troubleshooting
► Error Code
M2–1131 / M2–1134 / M2–1135
► Error message
Paper jam in tray 2
Paper jam in tray 1
► Symptom
NOTE
• M2–1131 : The paper is detected by feed 2 sensor.
• M2–1134 : The leading edge of the paper has not reached the feed 2 sensor within the specified time.
• M2-1135 : The paper has not left from the feed 2 sensor within the specified time.


4. Troubleshooting
► Error Code
M2–1211 / M2–1213 / M2–1214
► Error message
Paper jam inside of machine.
► Symptom
NOTE
• M2–1211 : When the machine is warming-up, jammed paper inside machine is detected.
• M2–1213 : The leading edge of the paper has not reached the regi. sensor within the specified time.
• M2-1214 : The paper has not left from the regi. sensor within the specified time.

a) Enter SVC mode. Execute the regi sensor test.
b) Check connection between the regi sensor and main board.
c) If the connection is OK, replace the regi sensor.
d) If the regi sensor is normal, check the regi motor.
e) Execute regi motor test.
f) Check if the regi motor cable is connected correctly.
g) If the connection is OK, replace the regi drive unit.

4. Troubleshooting
► Error Code
M2–1331 / M2–1332 / M2–1333 / M2–1334
► Error message
Paper jam at the top of duplex path
► Symptom
NOTE
• M2–1332 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_M2-1332.htm
• M2-1331 : Paper is detected by the fuser out JAM sensor.
• M2-1332 : Paper has not reached the fuser out JAM sensor within the specified time.
• M2-1333 : Paper escaped from feed sensor has reached to the fuser out JAM sensor faster than the specified time.
• M2–1334 : The paper has not left from the fuser out JAM sensor within the specified time.
1) Open the side cover. Remove jammed paper.
2) If the problem persists, check the following:

a) Enter SVC mode. Execute the fuser out sensor test.
b) Check connection between the fuser out sensor and main board.
c) If the connection is OK, replace the fuser out sensor.
d) If the fuser out sensor is normal, check the fuser/exit motor.
e) Execute fuser/exit motor test.
f) Check if the fuser/exit motor cable is connected correctly.
g) If the connection is OK, replace the fuser/exit drive unit.

4. Troubleshooting
► Error Code
M2–2111 / M2–2112 / M2–2113 / M2–2114 / M2–2311 / M2–2312 / M2–2314
► Error message
Paper jam at the top of duplex path
► Symptom
Paper jam has occurred in duplex path.
NOTE
1) Open the side cover. Remove jammed paper.

a) Enter SVC mode. Execute the fuser out sensor test.
b) Check connection between the fuser out sensor and main board.
c) If the connection is OK, replace the fuser out sensor.
d) If the fuser out sensor is normal, check the fuser/exit motor.
e) Execute fuser/exit motor test.
f) Check if the fuser/exit motor cable is connected correctly.
g) If the connection is OK, replace the fuser/exit drive unit.

4. Troubleshooting
► Error Code
M3–1411 / M3–1412 / M3–1413 / M3–1414
► Error message
Paper jam in exit area.
Check whether the pieces of paper remain in the paper path
► Symptom
Paper jam has occurred around the fuser unit.(Job separator connection is defective. / Actuator-Exit is defective.)
NOTE

a) Remove the exit unit.
b) Check if the return sensor is connected correctly. If the connection is OK, replace the sensor.
c) Check if the return sensor actuator is broken or deformed. If necessary, reassemble or replace it.
d) Check if the exit gate solenoid connected correctly. If the connection is OK, replace the solenoid.
e) If the problem persists, replace the fuser unit.

4. Troubleshooting
4.6.17. Mx–xxxx (Tray not install_Paper empty_Outbin full)

M1-3122 Tray 1 cassette is pulled out. Insert it properly P.4–134
M1-3222 Tray 2 cassette is pulled out. Insert it properly P.4–135
M1-4111 Tray Failure: #M1-4111. Pull tray 1 out and insert it. Call for service if the
P.4–136
problem persists
M1-4211 Tray Failure: #M1-4211. Pull tray 2 out and insert it. Call for service if the
P.4–137
problem persists
M1-5111 Paper is low in tray 1. Load paper P.4–138
M1-5112 Paper is empty in tray 1. Load paper P.4–138
M1-5120 Paper is empty in all tray. Load paper P.4–138
M1-5211 Paper is low in tray 2. Load paper P.4–139
M1-5612 Paper is empty in MP tray. Load paper P.4–140
M3-2230 Paper in output bin is full. Remove printed paper P.4–141
M3-2430 Paper in output bin is full. Remove printed paper P.4–141

4. Troubleshooting
► Error Code
M1-3122
► Error message
► Symptom
NOTE
1) Remove and insert Tray1 correctly.
2) If Tray1 is not locked or pulled out without holding the locking lever, remove Tray1.
3) Check if foreign substance or paper is inside the space between Tray1,2. If so, please remove it.
4) If the problem persists, check that the auto size sensor is connected properly.
5) If the problem persists, replace the main board.

4. Troubleshooting
► Error Code
M1-3222
► Error message
► Symptom
NOTE
1) Remove and insert Tray2 correctly.
2) If Tray2 is not locked or pulled out without holding the locking lever, remove Tray2.
3) Check if foreign substance or paper is inside the space between Tray1,2. If so, please remove it.
4) If the problem persists, check that the auto size sensor is connected properly.

4. Troubleshooting
► Error Code
M1-4111
► Error message
Input System Failure #M1–4111 : Pull Tray 1 out and insert it.
► Symptom
NOTE
1) Remove tray1 and re-install it.
2) If the problem persists, turn the machine off then on.
3) Enter SVC mode. Execute pickup motor test.

4) If the pick up motor operation is abnormal, turn the machine off.
6) Check if the connection between pickup drive unit1 and main board is secure.
7) If the connection is OK, replace the pickup drive unit.
8) If the problem persists, check the pickup unit1.

a) Check if the photo sensor in the pickup unit1 is defective.
b) If the sensor is defective, replace it.

4. Troubleshooting
► Error Code
M1-4211
► Error message
Input System Failure #M1-4211 : Pull Tray 2 out and insert it.
► Symptom
NOTE
1) Remove tray2 and re-install it.
2) If the problem persists, turn the machine off then on.
3) Enter SVC mode. Execute pickup motor test.

4) If the pick up motor operation is abnormal, turn the machine off.
6) Check if the connection between pickup drive unit2 and main board is secure.
7) If the connection is OK, replace the pickup drive unit.
8) If the problem persists, check the pickup unit2.

a) Check if the photo sensor in the pickup unit2 is defective.
b) If the sensor is defective, replace it.

4. Troubleshooting
► Error Code
M1–5111 / M1–5112 / M1–5113 / M1–5120
► Error message
► Symptom
Paper in the tray1 is less than 10%. / The photo sensor is defective.
NOTE
1) Remove tray 1. Load paper in the tray. And insert tray 1.
2) If paper is loaded but error message has not disappeared, check the following:
a) Turn the machine off. Open the Side Cover.
b) Remove Pick-Up Unit1.
c) If the photo sensor is contaminated, clean it.
d) If the photo sensor is defective, replace it.
e) If the actuator is defective, replace it.

4. Troubleshooting
► Error Code
M1–5211 / M1–5212
► Error message
► Symptom
Paper in the tray is less than 10% of specification. / The photo sensor is defective.
NOTE
1) Remove tray 2. Load paper in the tray, and insert the tray 2.
2) If paper is loaded but error message has not disappeared, check the following :
a) Turn the machine off. Open the Side Cover.
b) Remove Pick-Up Unit2.
c) If the photo sensor is contaminated, clean it.
d) If the photo sensor is defective, replace it.
e) If the actuator is defective, replace it.

4. Troubleshooting
► Error Code
M1–5612
► Error message
Paper is empty in MP Tray. Load paper.
► Symptom
Paper in the MP tray is less than 10%. / The photo sensor is defective.
NOTE
1) Load the paper in the MP tray.
2) If paper is loaded but error message has not disappeared, check the following :
a) If the photo sensor is contaminated, clean it.
b) If the photo sensor is defective, replace it.
c) If the actuator is defective, replace it.

4. Troubleshooting
► Error Code
M3–2230 / M3–2430
► Error message
Output tray is full. Remove printed media.
► Symptom
There is too much paper in output bin tray or inner tray.
NOTE
• M3-2230 : There is too much paper in output bin tray.
• M3-2430 : There is too much paper in inner tray.
1) Remove the paper from output bin tray or inner tray.
2) If this error occurs continually, check the following.

a) Check if the bin-full sensor and actuator is assembled correctly.
b) Check if the bin-full sensor is defective.

4. Troubleshooting
4.6.18. Sx–xxxx (System error)

S1-1113 Video System Failure: #S1-1113. Turn off then on P.4–144
S1-1313 The clock became initial time. Set a time again P.4–145
S1-2433 System Failure: #S1-2433 . Call for service P.4–147
S1-2434 There is not enough space on the hard disk. Please delete the information
P.4–148
stored in the address book
S1-2435 There is not enough space on the hard disk. Please delete the stored file P.4–148
S1-2436 There is not enough space on the hard disk. Please delete the stored file P.4–148
S1-2437 There is not enough space on the hard disk. Please wait a moment P.4–148
S1-2438 There is not enough space on the hard disk. Please check your printer P.4–148
S1-2439 There is not enough space on the hard disk. Please check your printer P.4–148
S1-2443 HDD System Failure #S1-2443 : Call for service P.4–147
S1-2510 MSOK Failure: #S1-2510. Call for service and change MSOK P.4–149
S1-2521 MSOK Failure: #S1-2521. Call for service P.4–149
S1-5221 Wireless network card is not installed. Install the card P.4–151
S1-5521 FDI device is not installed. Install the device P.4–151
S2-1211 Engine System Failure: #S2-1211. Turn off then on P.4–152
S2-2311 Engine System Failure: #S2-2311. Turn off then on P.4–152
S2-3321 Supplying and mixing toner to developer unit. Please wait... P.4–153
S2-3421 Calibrating image density. Please wait... P.4–153
S2-4210 Front door is open. Close it P.4–153
S2-4410 Right door is open. Close it P.4–154
S3-3121 Scanner is locked P.4–155
S3-3211 Scan System Failure: #S3-3211. Turn off then on P.4–156
S4-3131 There has been a problem with fax modem card(Line 1). Install again. Call for
P.4–157
service if the problem persists
S4-3132 There has been a problem with fax modem card(Line 2). Install again. Call for
P.4–157
service if the problem persists

4. Troubleshooting

S5-3111 UI System Failure: #S5-3111. Call for service P.4–158
S6-3113 Network Failure: #S6-3113. Turn off then on. Call for service if the problem
P.4–159
persists
S6-3114 Network Failure: #S6-3114. Turn off then on. Call for service if the problem
P.4–159
persists
S6-3122 Network cable is disconnected. Check it P.4–159
S6-3123 This IP address conflicts with that of other system. Check it P.4–160
S6-3128 802.1x authentication failed. Please contact the system administrator P.4–160
S7-2110 Fuser Failure: #S7-2110. Turn off then on. Call for service if the problem
P.4–161
persists

4. Troubleshooting
► Error Code
S1–1113 / S1–1114
► Error message
Video System Failure #S1-1113: Turn off then on.
► Symptom
The system has some problems due to CPU overheating.
NOTE
• S1–1113 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_S1-1113.html
2) Wait until the machine is cool, and then turn the machine on.
5) Replace the main board.
NOTE
Insert the MSOK to the new main board.
6) Assemble the rear cover. Turn the machine on.

4. Troubleshooting
► Error Code
S1–1313
► Error message
The clock became initial time. Set a time again.
► Symptom
Saved time is invalid
1) Set up the time and reboot the machine.
a) Select “Machine Setup” on touch screen.
b) Select “General Setting”.
c) Select “Date and Time” and set the time.

a) Remove the rear cover.
b) Remove the fax holder from the main board.
c) Measure the voltage of the battery. If the battery is normal, the measured value is over 3V.
3) If the battery is normal, replace the main board.
► Error Code
S1–1411 / S1–1413
► Error message
Video System Failure: #S1-1411. Turn off then on
Video System Failure: #S1-1413. Turn off then on
► Symptom
Video chip in main board is defective.
NOTE
NOTE

4. Troubleshooting
► Error Code
S1–2111
► Error message
► Symptom
The machine can’t detect memory during booting.
NOTE
(http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_S1-2111.html)
NOTE
5) Assemble the rear cover. Turn the machine on.

4. Troubleshooting
► Error Code
S1–2433 / S1–2443 / S1–2444 / S1–2445 / S1–2446 / S1–2447 / S1–2448 / S1–2449
► Error message
HDD System Failure #S1-24xx: Turn off then on.
► Symptom
HDD partition is full or corrupted.
NOTE
• S1–2448 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_S1-2448.htm
1) Enter SVC mode. Select “System Recovery” in Service Function menu.
2) Execute hard disk format and firmware re-installation.
3) If the problem persists, replace the HDD.

4. Troubleshooting
► Error Code
S1–2434 / S1–2435 / S1–2436 / S1–2437 / S1–2438 / S1–2439
► Error message
HDD Error #S1-243x. Check users guide.
► Symptom
HDD partition or memory is full.
NOTE
NOTE
• S1-2434 : Addresses in Address book / User data in User profile
• S1-2435 : Documents in Document box / Jobs in Secure job list / Fonts / Forms
• S1-2436 : System Logs
• S1-2437/3438/3439 : Printing Error / No Paper in Tray
1) Enter SVC mode. Select “Hard Disk Maintenance” in Service Function menu.
2) Execute hard disk format.
3) If the problem persists, replace the HDD.

4. Troubleshooting
► Error Code
S1–2510 / S1–2521
► Error message
MSOK System Failure #S1-2510: Turn off then on.
MSOK Failure: #S1-2521. Call for service
► Symptom
MSOK is not installed properly. / MSOK is defective.
NOTE
2) Check if the MSOK is inserted correctly. Remove and reinstall it.

4. Troubleshooting
► Error Code
S1–4111
► Error message
► Symptom
The main board can’t send the data through the network channel.
1) Check if the green LED of the network port is on.
2) If not, unplug and reconnect the network cable.

4. Troubleshooting
► Error Code
S1–4311
► Error message
► Symptom
The USB device chip is defective.
NOTE
3) Replace the OPE hub board.
► Error Code
S1–5221
► Error message
Wireless network card is not installed. Install the card
► Symptom
Wireless network card is not installed correctly.
NOTE
1) Check if the WLAN card is installed correctly. If necessary, re-install or replace it with new one.
► Error Code
S1–5521
► Error message
FDI device is not installed. Install the device
► Symptom
FDI device was removed.
1) Check if the FDI is installed correctly. If necessary, re-install or replace it with new one.

4. Troubleshooting
► Error Code
S2–1211
S2–2311
► Error message
Engine System Failure: #S2-1211. Turn off then on
Engine System Failure: #S2-2311. Turn off then on
► Symptom
The main board is defective.
NOTE
• Power chip error
• EEPROM detection error
• Communication error

4. Troubleshooting
► Error Code
S2–33xx
S2–34xx
► Error message
Engine is power save
Supplying and mixing toner to developer unit. Please wait…
Calibrating image density. Please wait...
► Symptom
These error show the engine status.
1) Wait until error will be disappeared.
► Error Code
S2–4210
► Error message
Front door is open. Close it.
► Symptom
Front cover or Side cover is opened.
NOTE
1) Close the front cover correctly.
2) Check if the cover open sensor connector is connected properly. Reconnect it.
3) If the sensor is defective, replace it.

4. Troubleshooting
► Error Code
S2–4410
► Error message
Right door is open. Close it.
► Symptom
Front cover or Side cover is opened.
NOTE
1) Close the side cover correctly.
2) Check if the cover open sensor connector is connected properly. Reconnect it.

4. Troubleshooting
► Error Code
S3–3121
► Error message
Scanner is locked.
► Symptom
Scanner module does not move.
NOTE
1) Turn off the machine then on. Check if the scanner module works normally.
2) If the initial operation does not occurred normally, turn the machine off.
3) Remove the scan glass.
4) Check if the home position sensor cable is connected correctly.
5) Remove the scan rear cover. Check if all cables on scan joint board are connected correctly.
6) If the connection is OK, replace the scan joint board.

4. Troubleshooting
► Error Code
S3–3211
► Error message
Scan System Failure #S3-3211: Turn off then on.
► Symptom
ADF is not connected or communication error occurs with CIP6 board.
NOTE
1) Turn the machine off then on. If the problem persists, check the following:
2) Turn the machine off again.
3) Remove the scan rear cover. Check if the connector on scan joint board is connected correctly.
4) Remove the ADF rear cover. Check if the connector on ADF board is connected correctly.
5) If the connection is OK, replace the ADF board.

4. Troubleshooting
► Error Code
S4–3131
► Error message
There has been a problem with fax modem card(Line 1). Install again. Call for service if the problem persists
► Symptom
1st Fax card is not installed properly. / Fax card is defective.
1) Remove and reinstall the 1st fax card.
2) If the 1st fax card is defective, replace it.
► Error Code
S4–3132
► Error message
There has been a problem with fax modem card(Line 1). Install again. Call for service if the problem persists
► Symptom
2nd Fax card is not installed properly. / Fax card is defective.
1) Remove and reinstall the 2nd fax card.
2) If the 2nd fax card is defective, replace it.

4. Troubleshooting
► Error Code
S5–3111
► Error message
UI System Failure #S5-3111:Turn off then on.
► Symptom
Communication error between main board and OPE board has occurred.
NOTE
2) Check if the OPE cable is connected to the main board correctly.
3) Replace the OPE hub board.

4. Troubleshooting
► Error Code
S6–3113 / S6–3122
► Error message
Network Failure: #S6-3113. Turn off then on. Call for service if the problem persists
Network cable is disconnected. Check it.
► Symptom
Network cable is disconnected.
► Error Code
S6–3114
► Error message
Network Failure: #S6-3114. Turn off then on. Call for service if the problem persists
► Symptom
Network chip in option network kit is defective.
3) Re-install the optional network kit.
4) If the problem persists, replace the optional network kit.

4. Troubleshooting
► Error Code
S6–3123
S6–3128
► Error message
This IP address conflicts with that of other system. Check it.
802.1x authentication failed. Please Contact the System Administrator.
► Symptom
Network error. (IP address conflicts with that of another system. / Communication error / There is no response when
checking the ping test.)
• Change the machine’s IP address.
1) Select “Machine Setup” on the touch screen.
2) Select “Networking Setting”.
3) “Log-In”.
4) Select “TCP/IP”.
5) Select the proper item for your machine.
6) Select “IP Setting”.
7) Select the proper item for your machine.
8) Change the IP address.

4. Troubleshooting
► Error Code
S7–2110
► Error message
Fuser Failure: #S7-2110. Turn off then on
► Symptom
Heater control relay is abnormal.
NOTE
1) Turn the machine off. Re-install the fuser unit, then turn the machine on.
2) If the problem persists, replace the fuser unit.

4. Troubleshooting
4.6.19. U1–xxxx (Fuser error)

U1-2113 Fuser Unit Failure: #U1-2113. Turn off then on P.4–163
U1-2115 Fuser Unit Failure: #U1-2115. Turn off then on. Call for service if the problem
P.4–164
persists
P.4–163
persists
P.4–163
persists
P.4–163
persists
U1-2316 Fuser Failure: #U1-2316. Turn off then on. Call for service if the problem
P.4–163
persists
U1-2317 Fuser Failure: #U1-2317. Turn off then on. Call for service if the problem
P.4–163
persists
P.4–163
persists
P.4–163
persists
P.4–163
persists
U1-2335 Fuser Failure: #U1-2335. Turn off then on P.4–163
U1-2337 Fuser Failure: #U1-2337. Turn off then on P.4–163
U1-233A Fuser Failure: #U1-233A. Turn off then on P.4–163
U1-233D Fuser Failure: #U1-233D. Turn off then on P.4–163
P.4–163
persists
U1-234H Fuser Unit Failure: #U1-234H. Turn off then on. Call for service if the problem
P.4–163
persists

4. Troubleshooting
► Error Code
U1–2xxx
► Error message
Fuser Unit Failure: #U1-2xxx Turn off then on
► Symptom
The thermistor can’t measure temperature. The hear-roller will not heat-up. / Temperature of the fuser increases
abnormally.
NOTE
• U1–2316 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_U1-2316.html
• U1–2320 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_U1-2320.htm
• U1-2332 : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_U1-2332.html
• U1–234H : http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_U1-234H.html
1) Remove the fuser unit. After opening the jam cover, check if jammed or wrapped paper is in the fuser unit.
2) Re-install the fuser unit, then turn the machine on.
3) If the problem persists, check the following :

a) Check if the Halogen lamp is broken or disconnected.
b) Check if the AC connection of the Halogen lamp is disconnected or contaminated.
c) Check if the thermostat is disconnected.
d) Check if the non-contact type thermistor is broken.
4) If the problem persists, replace the Fuser unit
5) If the problem persists, replace the Main board or FDB board, SMPS

4. Troubleshooting
► Error Code
U1–2115
► Error message
Fuser Unit Failure: #U1-2115. Turn off then on.
► Symptom
The pressure control unit(Cam unit)of the fuser is abnormal.
NOTE
(http://tsp.samsung.com/tsp_file/spds/samsungprinter/K7/Webview/EN_K7_U1-2115.html)
1) Turn the machine off then open the side cover.
2) Remove and re-install the fuser unit, then turn the machine on.

a) When the side-cover closes, check if the operation sound of the pressure control unit occurs.
b) Check if the parts of the pressure control unit are abnormal.
- Check if the shape of the CAM-REAR is broken.
- Check if there are abnormal parts of the pressure control unit.
c) Check if the fuser-motor is abnormal via SVC mode.
4) If the problem persists, replace the Fuser unit.
5) If the problem persists, replace the pressure control unit or cam-motor or main board.

4. Troubleshooting
4.6.20. U2–xxxx (LSU error)

U2-1111 LSU Failure: #U2-1111.Turn off then on. Call for service if the problem
P.4–166
persists
U2-1112 LSU Failure: #U2-1112. Turn off then on. Call for service if the problem
P.4–166
persists
U2-1113 LSU Failure: #U2-1113.Turn off then on. Call for service if the problem
P.4–167
persists
U2-1114 LSU Failure: #U2-1114. Turn off then on. Call for service if the problem
P.4–166
persists

4. Troubleshooting
► Error Code
U2–1111 / U2–1112 / U2–1114
► Error message
LSU Failure: #U2-111x.Turn off then on. Call for service if the problem persists
► Symptom
LSU motor does not operate or it operates abnormally. Motor ready signal is abnormal.
NOTE
CAUTION
Before unplugging the LSU harness, the machine must be turned off and power cord must be removed.
1) Turn the machine off then on. Check for the LSU motor operation sound during warm-up.
2) Print a demo page to check that the machine operates normally.

a) If the LSU motor makes a sound,
i) Enter SVC mode to check the LSU motor ready signal.
( Diagnostics > Engine Diagnostics > Engine Test Routines)
ii) Select “LSU Motor1 Run Ready”.

iii) Press ‘Start’ button. Check that the status has changed to ‘Executing -> Low -> High’.
iv) If the status has not changed, the motor ready signal is abnormal. Replace the LSU.
b) If the LSU motor does not makes a sound,
i) Turn the machine off and open the side cover. Unplug and reconnect the LSU cable. Check that the LSU
motor make a sound after turning the machine on.
ii) Turn the machine off and remove the rear cover. Unplug and reconnect the LSU cable on main board.
Check that the LSU motor make a sound after turning the machine on.
iii) If the LSU cable is defective, replace it. Check that the LSU motor make a sound after turning the
machine on.
iv) If the problem persists, replace the LSU.

4. Troubleshooting
► Error Code
U2–1113
► Error message
LSU Failure: #U2-1113.Turn off then on. Call for service if the problem persists
► Symptom
Hsync signal of the LSU is abnormal.
NOTE
CAUTION
Before unplugging the LSU harness, the machine must be turned off and power cord must be removed.
1) Turn the machine off then on. Check for the LSU motor operation sound during warm-up.
2) Print a demo page to check that the machine operates normally.

a) Turn the machine off and open the side cover. Unplug and reconnect the LSU cable. Print a demo page to
check that the machine operates normally.
b) Turn the machine off and open the side cover. Unplug and reconnect the LSU cable on main board. Print a
demo page to check that the machine operates normally.
c) If the LSU cable is defective, replace it. Check that the LSU motor makes a sound after turning the machine on.
d) If the problem persists, replace the LSU.

4. Troubleshooting
4.6.21. U3–xxxx (Document Feeder error_DSDF for LX model)

U3-3111 Original paper jam in front of the scanner P.4–169
Documents are inserted incorrectly. After open the scanner`s door, put it again.
U3-3122 P.4–170
Call for service if the problem persists
U3-3211 Original paper jam inside of scanner P.4–169
U3-3213 Original paper jam inside the scanner P.4–169
U3-3611 Original paper jam in the exit area of scanner P.4–172
U3-4210 Top door of scanner is open P.4–173

4. Troubleshooting
► Error Code
U3–3111 / U3–3113 / U3–3114 / U3–3211 / U3–3213 / U3–3214 / U3–3311 / U3–3313 / U3–3314
► Error message
Original paper jam in front of the scanner
► Symptom
Jam has occurred inside the DSDF unit.
1) Open the DSDF cover. If there is jammed paper, remove it.
2) If this error occurs continually, check the Regi. sensor and Regi actuator.
Push and release the regi actuator. Check if the pick up module returns the original position.
If the sensor is defective, replace it.
3) If the regi sensor is OK, check the scan 1 sensor and reflect film.
• If the scan 1 sensor is defective, replace it.
• If the reflect film is contaminated, clean it.

4. Troubleshooting
► Error Code
U3–3122
► Error message
Documents are inserted incorrectly. After open the scanner`s door, put it again. Call for service if the problem persists
► Symptom
DSDF pick up module has the problem.
1) Open and close the DSDF cover. Check if the error message is disappeared.
2) Open the DSDF cover. Push and release the pick up module. Check if the pick up module returns the original
position.
• Check if the spring is deformed. If the spring is defective, replace it.
3) Check If the regi sensor is OK, check the scan sensor and scan actuator. If their operation is abnormal, replace
the defective part.

4. Troubleshooting
► Error Code
U3–3511 / U3–3513 / U3–3514
► Error message
Original paper jam inside of scanner.
► Symptom
2) If this error occurs continually, check the Regi. sensor and Regi actuator.
Push and release the regi actuator. Check if the pick up module returns the original position.
3) If the regi sensor is OK, check the scan 2 sensor and exit sensor.
• If the exit sensor is defective, replace it.

4. Troubleshooting
► Error Code
U3–3611 / U3–3613 / U3–3614
► Error message
Original paper jam in the exit area of scanner
► Symptom
Jam has occurred in exit area of the DSDF unit.
2) If the regi sensor is OK, check the scan 2 sensor and exit sensor.
• If the exit sensor is defective, replace it.

4. Troubleshooting
► Error Code
U3–4210
► Error message
Top door of scanner is open.
► Symptom
DSDF cover is open.
2) If the problem persists, check the cover open sensor.

a) Open the DSDF cover. Remove the spring.
b) Check if the sensor connector is connected correctly.

4. Troubleshooting
4.6.22. U3–xxxx (Document Feeder error_DSDF for GX model)

U3-3122 Documents are inserted incorrectly. After open the scanner`s door, put it again.
P.4–176
Call for service if the problem persists
U3-3211 Original paper jam inside of scanner P.4–175
U3-4210 Top door of scanner is open P.4–179

4. Troubleshooting
► Error Code
U3–3111 / U3–3113 / U3–3114 / U3–3211 / U3–3213 / U3–3214
► Error message
► Symptom
NOTE
1) Find and remove the jammed paper.
2) If this error occurs continually, remove 4 screws and the upper cover.
3) Check the Pick-up Position Sensor(0604–001393) and Pick-up Feed Sensor(0604–001381) connection.
4) Check if the black sheet from the bottom of the pick up feed sensor is attached properly. If it is contaminated, clean it.

4. Troubleshooting
► Error Code
U3–3122
► Error message
Documents are inserted incorrectly. After open the scanner`s door, put it again. Call for service if the problem persists
► Symptom
DSDF pick up module has the problem.
NOTE
2) Open the DSDF cover. Push and release the pick up module. Check if the pick up module returns the original
position.
• Check if the spring is deformed. If the spring is defective, replace it.
3) Check If the regi sensor is OK, check the scan sensor and scan actuator. If their operation is abnormal, replace
the defective part.

4. Troubleshooting
► Error Code
U3–3311 / U3–3313 / U3–3314
► Error message
► Symptom
NOTE
2) If this error occurs continually, open the DSDF-open cover and check the Pre-Regi sensor and Regi sensor. If the
sensor is defective, replace it(0604–001381).
3) Open the DSDF Unit and check the Scan In sensor operation. Check if the sensor harness is connected correctly. If
the sensor is defective, replace it. If the black sheet in the middle of the platen ADF glass is contaminated, clean it.

4. Troubleshooting
► Error Code
U3–3511 / U3–3613 / U3–3614
U3–3611 / U3–3613 / U3–3614
► Error message
Original paper jam in the exit area of scanner
► Symptom
Jam has occurred in exit area of the DSDF unit.
NOTE
2) If this error occurs continually, push the locking lever and pull down the Scan Out.
3) Check the Scan Out sensor and Exit sensor. If the sensor is defective, replace it(0604–001381).

4. Troubleshooting
► Error Code
U3–4210
► Error message
Top door of scanner is open.
► Symptom
DSDF cover is open.
NOTE
2) If the problem persists, check the cover open sensor.

a) Open the DSDF cover. Remove 4 screws.
b) Remove the cover and check if the sensor harness is connected correctly.

4. Troubleshooting
4.7. Image quality problems and solutions
Print-quality defects can be attributed to printer components, consumables, media, internal software, external software
applications and environmental conditions.
To successfully troubleshoot print-quality problems, as many variables as possible must be eliminated.
The first step is to generate prints using printable pages embedded in the printer on laser paper. The paper should be from
an unopened ream that has been acclimated to room temperature and you should ensure that genuine Samsung Toner
is installed in the printer.
Samsung A/S chart (A3)

4. Troubleshooting
[1] Grid pattern For adjusting margin and magnification

[2] Black patches For adjusting skew error
[3] Barcode For checking the reproduction of barcode
[4] Note area For recording the date, conditions, etc.
[A] Halftone band For checking banding and jitter (K 50%)
[B, L] Resolution patterns For checking resolution
[C, D, Images For checking color reproduction
E]
[F] Map image For checking fine line reproduction
[G] Color patches For checking color reproduction and uniformity
[H] Gradation pattern For checking tone reproduction of 7 colors (C, M, Y, K, R, G, B/ 10~100%)
[I] Color/Mono text For checking the reproduction of color, mono text
[J] Multilingual Feature For checking the reproduction of small text
[K] White Gap pattern For checking color to color, color to mono white gap
[M] Rulers For checking the magnification error (unit : cm)
[N] Rulers For checking the magnification error (unit : inch)

4. Troubleshooting
How to analysis the defect image

See the next flow chart.
TIP
1) According to the part remain life, cause can vary. Check the part remain life.
2) Check the defect whether periodic or not.
P O W E R !O N
C h e c k ! S e t ! S t a t u s ! & ! P a r t s ! L if e
1 .! C h e c k !O P E ! L E D
2 .! P r i n t ! R e p o r t
3 .! P r in t ! T e s t ! P a g e
A n y !I m a g e !
D e fe c t?
zft
A s s u m e !D e f e c t ! T y p e ! & !
C au ses
op T e s t !a ! c a u s e
P r in t !T e s t !
P a g e ,! C le a r ?
zft
V e r if ic a t io n
( 2 ~ 3 !T im e s )

4. Troubleshooting
4.7.1. Vertical Black Lines
A. Typical faulty images
B. Troubleshooting procedure
Step Check item Action
1 OPC is scratched or contaminated in the vertical Replace the drum unit.
direction.
2 Scanner unit is contaminated. Wife the surface of contaminated parts with a soft cloth.
(ADF Glass / Mirror / CCD Sensor)

4. Troubleshooting
4.7.2. Vertical Light or White Lines
1 Some foreign substance is stuck between magnetic roller Remove foreign substances.
and Blade.
No toner on magnetic roller partially.
• Make the hook (Transparency sheet is

recommended.)
• Put the hook into the gap between magnetic roller
and Blade.
• Pull out foreign substances.
2 Developer in Deve unit is empty or Deve unit life is Check the deve unit remain on supplies information
expired. report.
If its life is expired, replace the deve unit.
Check the developer layer on magnetic roller is uniform
or not.
If the developer layer is short seriously, replace the deve
unit.

4. Troubleshooting

3 The path of Laser beam is blocked. Clean the LSU window.
(Foreign substance is on the LSU window.)
4 OPC is scratched or contaminated in the vertical Replace Drum unit.

direction. (Refer to 3.2.2.1.)

4. Troubleshooting
4.7.3. Horizontal periodic Black Band or Dot
Step Cause Action
1 Check if the horizontal band or spot occurs at approx. 1) Clean the contaminated surface on the charge
38 mm period. roller with a soft cloth.
• Check if the surface of the charge roller is 2) If the surface is scratched, replace the drum unit.
contaminated or scratched.
2 Check if the horizontal band or spot occurs at approx. 1) Clean the contaminated surface on the OPC drum
188 mm period. with a soft cloth.
• Check if the surface of the OPC drum is 2) If the surface is scratched, replace the drum unit.
contaminated or scratched.
3 Check if the charge roller contact plate is contaminated 1) Clean the charge roller contact plate.
or has the debris. 2) If the problem persists, replace the drum unit.
3) If the problem persists after replacing the drum
unit, replace the HVPS board.

4. Troubleshooting
4.7.4. Horizontal Periodic Light/Dark Lines, Dots.
1 Horizontal periodic bands (OPC, 188 mm) As some time passes, most of bands will disappear.
– OPC was exposed for long hours. Replace Drum unit.
– Damaged by high voltage in a short time. (Refer to 3.2.2.1.)
2 Horizontal periodic Light/Dark bands (Roller-Magnetic, Replace Deve unit.
35.7mm) (Refer to 3.2.2.1.)
– Roller-Magnetic is inferior in quality.
– V-groove of the surface of Roller-Magnetic is not
uniform.

4. Troubleshooting
4.7.5. Blurred image
1 Humidity of the circumstances and paper. Change to the new and better grade paper.
2 Thv transfer voltage is low. Turn up the THV transfer voltage.
(Refer to 4.5.6.9.)
3 Connection between HVPS and THV is incorrect. Check if the connection between THV high voltage
terminal and HVPS THV terminal is correct.
Check if the connection of HVPS and TR correct.

4. Troubleshooting
4.7.6. Foggy image
1 Voltage of OPC is abnormally low. Replace Drum unit.
(Refer to 3.2.2.1.)
2 Toner is over supplied by abnormal TC sensor. Replace the Toner cartridge.
3 T1 Voltage is abnormally high Check the connection in HVPS.
– Connection of Transfer rollers in THV, TR
Replace HVPS.
(Refer to 3.3.8.)
4 HVPS operates abnormally. Replace HVPS.
HVPS is damaged or broken.

4. Troubleshooting
4.7.7. Light image
1 Occur the poor Transfer. Replace HVPS.
(Refer to 3.3.8.)
2 Output voltage of HVPS is abnormally low. Replace HVPS.
– Color density becomes low. (Refer to 3.3.8.)
3 TC Sensor operates abnormally. Replace Deve unit.
(Refer to 3.2.2.1.)

4. Troubleshooting
4.7.8. Uneven pitch and jitter image
P a p e r fe e d in g
d ire c tio n
1 Under 3mm periodic jitters or horizontal bands has Remove foreign substances at the drive gears.
occurred. Apply grease.
- Toner cartridge gears.
- OPC unit gears.
- Main drive unit gears.

Replace the abnormal units.
- Toner cartridge.
- Drum unit.
- Main drive unit.
2 Under 1mm periodic jitter or horizontal bands has Check if the LSU is assembled incorrectly, replace the
occurred. screws.
Replace LSU
(Refer to 3.3.3.)

4. Troubleshooting
4.7.9. Skewed image
1 Is the cassette properly installed? Reinstall the cassette properly.
2 Is too much paper loaded in the cassettes? Reduce paper.
3 Are the cassette side guides properly set? Adjust the side guides.
4 Is the surface of pick up/ separation / forward roller Clean or replace the contaminated roller.
dirty? (Refer to 3.2.2.4.)
5 Is the DSDF installed and adjusted properly? Reinstall the DSDF unit.
Adjust DSDF skew.
(Refer to 4.9.)
6 Is the transfer belt installed properly? Reinstall PTB unit.

4. Troubleshooting
4.7.10. Poor fusing performance
1 Check the paper type. Check the paper type on control panel is same as paper
Depending on what type of paper used, print speed will user uses.
vary.
(ex)
- Plain (71~90g/), Thick (91~105g/) : 100%
- Heavy weight (106~175g/) : 50%
- Envelope (75~90 g/), Label (120~150 g/) : 50%
2 The fuser unit is worn out. Replace the fuser unit.
3 Check if the surface of the fuser belt & pressure roller Replace the fuser unit.
is scratched.
4 Check if the temperature control system has problems. Check the Non-contact thermistor sensor.
- Thermistor is broken or operates abnormally
– Halogen lamp is broken or operates abnormally.
Check the Halogen lamp.

If you find some problems, replace the broken parts or
Fuser unit.
5 Check if the pressure control system operates properly. Check the pressure control system.
The problem persists, replace Fuser unit.
6 Paper is wrapped on the Heating roller. Remove a wrapped paper and print the demo page.
If there are some problems on the printout, replace Fuser
unit.

4. Troubleshooting
4.7.11. Stain on the paper back side
1 Is the transfer belt dirty or worn out? Clean or replace the PTB Unit.
2 Are the fuser belt and pressure roller dirty? Clean the fuser belt and pressure roller.
3 Check the pressure roller surface is damaged or Replace Fuser unit.
scratched.

4. Troubleshooting
4.7.12. Setting Standard Tone
1. Setting Standard Tone

• <Purpose>
- To adjust the color tone to the standard set by factory.
NOTE
▪ After first machine installation, this functions must be executed.
• <Procedure>
1) Load A4 or Letter with SEF (Short Edge Feeding) direction on tray.
2) Select [Setting] on main UI.
3) Log in as Admin.
4) Select [Adjustment] -> [Tone Adjustment] -> [Setting Standard Tone].
5) Select ”OK” on confirmation window.
6) The scan ID chart will be printed out.
7) Load the chart on platen glass. (Horizontal direction)
8) Start scan.
9) When the scan complete window appears, select “OK”.

4. Troubleshooting
2. Cancel Setting Standard Tone
NOTE
When the machine is installed for the first time, “Cancel Setting Standard Tone” does not need to be executed.
• <Purpose>
- To cancel the setting standard tone.
- To return the customized tone by user after setting the standard tone.
• <Procedure>
1) Select [Adjustment] -> [Tone Adjustment] -> [Cancel Setting Standard Tone].
2) When the cancel setting standard toner will be appeared, select “OK”.
3) Select “FullTRC” : [Adjustment] -> [Tone Adjustment] -> [Auto Tone Adjustment] -> *Full + Execute Now
3. Error message
• <Scan Image Fail>
- When there is any problem on the scanned ID chart, error message will be appeared.
• <Check items>
- Check if the scanned ID chart is placed.
- Check if the chart direction is horizontal.
- Re-try the setting standard tone procedure.
4. In case of need
• When installing the machine for the first time.
• When the brightness is changed in comparison to previous image.

4. Troubleshooting
NOTE
If the problem persists after executing the setting standard tone, find another causes.

4. Troubleshooting
4.7.13. Scan Waveform Drop Image
1) Remove 2 screws. And then, remove the scan glass holder cover.
2) Lift the scan glass up and release it.
NOTE
3) Cyan Background
a) Mark a point on the screw with the pen.
b) Rotate the ‘R’ screw 90 degrees in a clockwise direction. (This is the -1.2 mm align adjustment.)
c) Execute a copy or scan job to check the image improvement.
d) Repeat step 2,3 for improvement.
NOTE
If the image does not improve by three attempts, please stop the adjustment.

4. Troubleshooting
4) Yellow Background
a) Mark a point on the screw with the pen.
b) Rotate the ‘R’ screw 90 degrees in a counterclockwise direction. (This is the 1.2 mm align adjustment.)
c) Execute a copy or scan job to check the image improvement.
d) Repeat step 2,3 for improvement.
NOTE
If the image does not improve by three attempts, please stop the adjustment.

4. Troubleshooting
4.8. Other Errors
4.8.1. Image system problem
No Problem Description Troubleshooting Page

1 Toner cartridge detection error P.4–198
2 Image contamination (Pressure roller contamination) P.4–199
1) Toner cartridge detection error

• Symptom : Toner cartridge is installed, but “Not Install” message occurs.
• Cause :
- Toner cartridge is not installed properly.
- CRUM harness of the toner cartridge is defective.
- CRUM PBA or CRUM Chip is defective.
- CRUM connection(Modular connector) is defective.
- CRUM Joint PBA is defective.
- Bad connection between the main board and the CRUM Joint PBA
• Troubleshooting
1) Toner cartridge install problem
- Check if the toner cartridge is installed properly.
- If the cartridge comes out automatically from set, check the cartridge fixing hook.
- If there are some problems of hook, replace cartridge cap or cartridge.
2) CRUM harness problem of the toner cartridge

- Check if CRUM harness of the toner cartridge is connected correctly.
Check if modular jack of the toner cartridge is broken or assembled abnormally.
- If the modular jack harness is defective, replace it with new one.

If the modular jack is entered to the toner cartridge, pull out it with hands.
3) CRUM PBA problem or CRUM data broken

- Replace the toner cartridge with new one.
4) CRUM connection(Modular connector) installation problem

a) Open the front cover. Pull out the toner cartridge.
b) Check the CRUM connection (Modular connector) is installed properly.
c) If the modular connector is not installed properly, open the front cover and re-install it.
5) CURM Joint PBA problem

- If CRUM Joint PBA has some problems of the modular jack pin or the main board interface connector etc,
replace the PBA with new one like No.4.
6) Bad connection between the main board and the CRUM Joint PBA
- Check the connection between the main board and the CRUM Joint PBA.
If the connection is bad, replace the harness or the CRUM Joint PBA or main board.

4. Troubleshooting
2) Image contamination (Pressure roller contamination)

• Symptom :
Image (Front/Back side of paper) is contaminated with toner
• Cause :
Toner is contaminated on the surface of pressure-poller with low coverage, mainly simplex, and low duty jobs.
• Troubleshooting
1) Install Vx.D6.08 or latest version.
2) Make sure ‘Clean Fuser’ function is set to ‘Auto’.

Vx.D6.08 or later version has Auto ‘Clean Fuser’ function as default.
If you are using ‘On’ mode previously, that pre-existing setting value will be kept as before. Otherwise, it will be
changed to ‘Auto’.
You can use ‘On’ mode and set desired interval as you need.
(SVC mode → Service Functions → Clean Fuser → Auto)
3) To execute fuser cleaning function manually, press ‘Execute Now’.
4) Repeat step ’3)’ up to 6 times until you cannot find any contamination on the fuser cleaning sheet.
If the contamination on the fuser cleaning sheet still exists, you may need to clean the pressure-roller with soft
brush or scraper with care.
a) Open the fuser jam cover. Remove 3 screws. And, remove the brush.

4. Troubleshooting
b) Check the surface of pressure roller and remove the toner contamination while rotating the pressure roller
1 cycle carefully.

4. Troubleshooting
4.8.2. Fuser problem

1 Acoustic noise in Fuser unit P.4–201
2 Image ‘Hot offset’ problem P.4–202
3 Error ‘Fusing unit not compatible’ problem P.4–203
1) Acoustic noise in Fuser unit

• Symptom : Acoustic noise from fuser assembly in early stage of printing
• Cause : Fuser belt edges is damaged.
• Troubleshooting
1) Replace the fuser unit with new one.

4. Troubleshooting
2) Image ‘Hot offset’ problem

• Symptom : Image at the leading edge of the paper is duplicated after 110mm.
• Cause : The fusing temperature was quite high.
• Troubleshooting
1) Lower the fusing temperature in SVC mode until the problem disappears.
Default value is 10, and it is recommended to change the value up to 8.
- How to change the plain temperature offset
a) Enter SVC mode. Select ‘Engine NVM Rear/Write’ tap.
b) Select ‘Plain Temperature offset’ menu.
c) Press ‘OK’ button after adjusting the value. (1 = 2℃)

d) Press ‘Home’ button to exit SVC mode.

4. Troubleshooting
3) Error ‘Fusing unit not compatible’ problem

• Symptom : Error ‘Fusing unit not compatible’ happens.
• Cause : Harness for EEPROM signal is damaged by the sharp edge of the Fuser frame.
• Troubleshooting
1) Check if the EEPROM signal harness is damaged.
If so, replace the fuser unit (from 2015.08.11 the new part was applied) or insulate the damaged spot of harness
by wrapping each harness up.
NOTE
You may need to remove the pre-existing AT tape, and re-apply the insulation for damaged each harness.
NOTE
New design was applied from 2015.08.11 which doesn’t have the sharp edge on the harness path.

4. Troubleshooting
4.8.3. Scanner and Document Feeder problem

1 Noise of ADF Hinge / Crack of ADF Hinge / ADF can’t be fixed as open P.4–205
2 ADF is not recognized. P.4–205
3 During copy or scan job, the original paper JAM and U3–3213 error occur. P.4–206

4. Troubleshooting
1) Noise of ADF Hinge / Crack of ADF Hinge / ADF can’t be fixed as open
• Symptom :
- When ADF is opened or closed, the noise from its hinge happened.
- ADF hinge is cracked.
- When the ADF unit is lifted to access the platen glass, the unit should remain at a 50° angle (± 10°). ADF unit
does not remain open as expected.
• Troubleshooting
1) Remove the ADF connector cover.
2) Remove the connector and 1 screw.
3) Lift up and remove the ADF unit.
4) Replace the hinge unit with new one.
5) Reassemble the ADF unit again.
2) ADF is not recognized

• Symptom :
- ADF installation is not recognized.
• Cause :
ADF power cable fails.
• Troubleshooting
1) Reassemble the ADF power cable and if it does not solve the problem, replace the cable.
2) Adjust harness and make it fixed with cable tie.

4. Troubleshooting
3) During copy or scan job, the original paper JAM and U3–3213 error occur.
• Symptom :
- During copy or scan job, the original paper JAM and U3–3213 error occur. (SL-K7xxx LX series / SL-X7xxx
LX series)
• Troubleshooting
1) Check if the “Sponge-Damper Separation” is moved to other position.
2) If yes, refer to following guide.

a) Remove 3 screws.
b) Remove the linker pressing its upper side to the inner direction. And then, remove the front cover.
c) Remove 4 screws.

4. Troubleshooting
d) Remove the Pick up Assy.
e) Replace the DSDF-HOUSING SEPARATION.

4. Troubleshooting
4.8.4. Drive unit problem

1 Machine makes noise when paper print out P.4–208
1) Machine makes noise when paper print out

• Symptom : Machine makes noise when paper print out
• Cause :
- Lack of grease in gear-train
- Old type gear is assembled.
• Troubleshooting
1) Enter the service mode.
2) Execute the fuser motor test.

(Service Mode > Diagnostics > Engine Diagnostics > Engine Test Routines > Fuser Motor Forward)
3) Remove the fuser unit. And execute the fuser motor test again.
4) If the machine still makes noise, replace the “DRIVE-FUSER EXIT” Assy.
5) If not, replace the fuser unit.

4. Troubleshooting
4.8.5. Feeding system problem

1 Tray1, Tray2, MP Tray can not pick up the paper. P.4–209
2 Machine can not feed the paper. P.4–210
3 Envelope wrinkle P.4–210
1) Tray1, Tray2, MP Tray can not pick up the paper.

• Symptom : Tray1, Tray2, MP Tray can not pick up the paper.
• Cause :
- Bad harness connection on the main board
- Connector defect of the main board
• Troubleshooting
1) Check the harness connection. If the harness is not connected correctly, reconnect it.
2) Check the pick up unit and pick up drive unit connector on main board.
If the connector has some problem of soldering, replace the main board.

4. Troubleshooting
2) Machine can not feed the paper.

• Symptom : The machine can not feed the paper from Tray1 or Tray2.
• Cause :
- Feed motor problem
- Feed motor connection problem
- Main board defect
• Troubleshooting
1) Check the Feed motor operation.
a) Open the side cover, and push the cover switch with paper forcibly.
b) Enter the service mode.
c) Select the menu below.
(EDC Mode > Diagnostics > Engine Diagnostics > Engine Test Routine > Feed motor > on/off )
Check the two feed rollers operating status.
d) If the feed rollers can not rotate, open the rear cover and check the motor and gears.
2) Check the connection between the main board and feed motor.
3) Envelope wrinkle
• Symptom :
Envelope is wrinkled when printing from MP tray.
• Troubleshooting
1) Enter SVC mode.
2) Select “Envelope Rotate”. (Service Functions > Envelope Rotate)
3) Select one menu among ‘off’, ‘90 degree’, ‘180 degree.

(Refer to 4.5.6.18. Envelope Rotate)

4. Troubleshooting
4.8.6. LSU problem

1 Loud noise sound of LSU motor P.4–211
1) Loud noise sound of LSU motor

• Symptom : The machine makes some noise like a siren from LSU motor in printing mode.
• Cause : LSU motor defect
• Troubleshooting
1) Enter the service mode and execute the LSU motor test.
2) If the LSU motor run sound is loud, replace the LSU.
3) If not, check the other unit.

4. Troubleshooting
4.8.7. Electrical circuit problem

1 SMPS output voltage drop error P.4–212
2 HDD makes a loud noise. P.4–213
3 Networking is not working. P.4–213
4 UI touch malfunction P.4–214
5 Home screen icon is disappeared or UI screen is broken. P.4–216
1) SMPS output voltage drop error

• Symptom : Some error messages occur on the OPE(C3-1312,S3-3121,M1-4111,M1-4211).
• Cause : 24V channels output voltage drop to under 21.6V and 5V channels output is normal.
• Troubleshooting
1) Check all 24V output channels (24VS1, 24VS2, 24VS3, 24VS4) whether 24V voltage comes out or not.
2) If 24V voltage doesn’t come out, check ‘24V on/off signal pin’ on the main board.
a) The voltage at ‘24V on/off signal pin’ is 0V. → Main board and signal is normal.
b) The voltage at signal pin is 4~5.3V → Main board and signal is abnormal.
3) If Main board and signal is normal and all 24V output channels are nearly 0V, check other parts( i.e. Fuser, motor,
scanner harness, etc.) driven by 24V voltage before replacing the SMPS.
4) If Main board and signal is normal and just one or two or three 24V output channels are nearly 0V, inspect some
harness from abnormal 24V output channel before replacing the SMPS.
5) If Main board and signal is abnormal and all 24V output channels are nearly 0V, inspect the harness, connector and
main board.

4. Troubleshooting
2) HDD makes a loud noise.

• Symptom : The Hard Disk Drive makes a loud noise when working.
• Cause : HDD itself has defects.
• Troubleshooting
1) Replace the HDD with new one.
3) Networking is not working.

• Symptom : Network is not working suddenly.
• Cause :
- Network line itself is not working properly.
- Network configuration is wrong.
- Some related electronic components have the defect in the main board.
• Troubleshooting
1) Do a ping test after connecting the network line which was used in the SET to a PC to check the network line itself.
2) Do a ping test after connecting the network line to the SET. If it is okay, check the network configuration which may
set wrong by some users without notice.
3) If the result of the ping test is not good, then open the rear cover and see the main board if there are some visible
defects on the network related components such as connector(CN16), capacitor(C192), and any other components
nearby. Surge voltage from the outside may cause the defects.
4) If those components have visible defects, then the main board should be changed.

4. Troubleshooting
4) UI touch malfunction
• Symptom : When touching a button, another button is entered.
• Cause :
- Touch IC is influenced by the interference between TX frequency and power noise frequency.
• Troubleshooting
1) If the power cord is connected to the multi tap, unplug and plug it to the independent outlet.
2) If the touch malfunction persists, check the followings.

a) Press "Power button“ until the pop up will be displayed.
b) Press pop-up area except “Cancel” and “Turn Off” button until the password window will be displayed.

4. Troubleshooting
c) Enter “8378” and press the “Done” button.
d) Select “Utilities “ Tap.
e) Change “Touch Config” value.

- After changing “Touch Config”, press “Home” button.
- Proiority : 1.(default) → 4. 401K_500K → 5. 500K_599K → 3. 148K_290K → 2. 86K_216K
f) Check the touch operation.
- If the touch malfunction persists, change “Touch Config” to another value and test the touch operation again.

4. Troubleshooting
5) Home screen icon is disappeared or UI screen is broken.

• Symptom : Home screen icon is disappeared or UI screen is broken.
• Cause :
- UI software error
• Troubleshooting
1) Enter SVC mode. (Refer to 4.5.1)
2) Execute “Main Memory Clear” (Service Functions > Main Memory Clear)

4. Troubleshooting
4.9. Adjustment
4.9.1. Adjusting the ADF(DSDF) skew
1) Stand the ADF unit. Loosen 2 screws securing both hinge units slightly.
2) Adjust the position of the ADF hinge as the skew status.
a) If the skew image is like a below sample, adjust the hinge unit to the direction of arrow. (1 scale => 1.0 mm
skew adjustment)

4. Troubleshooting
b) If the skew image is like a below sample, adjust the hinge unit to the direction of arrow. (1 scale => 1.0 mm
skew adjustment)
3) Detach the ADF sponge after adjusting the skew. Place the ADF sponge on platen glass. And then close the ADF
unit to stick the sponge.

4. Troubleshooting
4.9.2. Adjusting the Scan FR Carriage Flatness
1) Remove 7 screws. And then, release the scan front cover and scan glass holder cover.
NOTE
3) Tap 4 corners of the FR carriage to check the direction that adjustment is needed.

4. Troubleshooting
4) Move the FR carriage as shown below. And then, remove the transparent sheet.
5) Rotate the slider-adjust to adjust the FR carriage flatness.
6) Reassemble in reverse order of disassembly.

4. Troubleshooting
4.9.3. Adjusting the Scan Top Skew
1) Remove 2 screws. And then, remove the scan glass holder cover.
NOTE
3) Adjust ‘R’, ‘S’ screws as the skew status.

For example,
a) If the top skew is like a below sample (@AS chart, 1.5mm clockwise direction skew), rotate ‘S’ screw one turn and
‘R’ screw a half turn in a clockwise direction.
NOTE
The combination of ‘S’ screw one turn and ‘R’ screw a half turn must be kept.

4. Troubleshooting
b) If the top skew is like a below sample (@AS chart, 1.5mm counterclockwise direction skew), rotate ‘S’ screw one
turn and ‘R’ screw a half turn in a counterclockwise direction.
NOTE
The combination of ‘S’ screw one turn and ‘R’ screw a half turn must be kept.
4) Reassemble in reverse order of disassembly.

4. Troubleshooting
4.10. SPDS (Smart Printer Diagnostic System) Application
This application is based on Android and the purpose of SPDS is to help the service engineer when repairing a machine.
Specification of SPDS App.

1) Mobile
a) Support model : Galaxy series, All android phone.
• Galaxy S series (S2, S3, S4,…)
• Galaxy Note series (Note1, Note2, Note3,…)
• Galaxy Tab series (Tab7.0, Tab7.7, Tab8.9, Tab10.1,…)

b) Android version
• Android 4.0 or later (Ice Cream Sandwich)
2) Printer
a) USB support model
b) Wifi-Direct support model

4. Troubleshooting
4.10.1. SPDS App Installation and Login
4.10.1.1. SPDS App Installation
1) Run Google Play Store
• Run Google Play Store to download SPDS App.
2) Search SPDS App
• SPDS App can be found by searching ‘SPDS’.
3) Start Installation
• Press ‘INSTALL’ after checking App information.
4) Check Authority
• Press ‘ACCEPT’ after checking required authority.
5) Installing
• SPDS App will be installed.
6) Installation Complete
• After completing install App you can see installation result. If you want to run App press ‘OPEN’.

4. Troubleshooting
4.10.1.2. User Registration Request
1) Screen that is running
• User registration is required for first time users. Press ‘User Registration Request’.
2) Input User Information
• Input ID, Name, E-mail, Partner ID. ID is required more than 4 characters. Blank spaces are not allowed. Utilize
capital and small letters.
NOTE
If E-mail address is invalid you cannot progress to the next step.
• If Partner ID is invalid you cannot receive approval of administrator.
3) Request User Registration
• After request of user registration wait for approval of administrator.
• If approved by the administrator email notification will be sent out.

4. Troubleshooting
4.10.1.3. Change_Reset Password
1) Screen is running
• After approval of ‘User Request Registration’, you can proceed ‘Change/Reset your Password’.
• Press ‘Change/Reset your Password’ at the bottom of screen.
2) Registration Password
• Press ‘OK’ after ID input ‘User Request Registration’.
3) Send Authentication Code
• Confirm Authentication Code to e-mail of registered user.
4) Input Authentication Code
• Press ‘OK’ after input authentication code.
5) Registration Password
• Input your password.
6) Complete Registration
• Press ‘OK’ and then login at login screen.

4. Troubleshooting
4.10.1.4. Login
1) Screen is running
• Input ID and password that registered at ‘User Request Registration’, ‘Change/Reset your Password’.
2) Try login
• Try login after input ID and Password.
• If you forget your password, press ‘Change/Reset your Password’.
3) Success login
• If you have successful login you can see the four device connectivity method.

4. Troubleshooting
Login (USIM Change)

1) Screen that is running
• Utilize your ID and password to login.
2) USIM Certification Error
• When present device USIM and USIM that used at sign up are different you can login after USIM Change Request.
3) USIM Change Request
• You can login via new ID and password after administrator approve USIM change.
• USIM information will be updated you cannot login with existing USIM.

4. Troubleshooting
4.10.1.5. Select Connect Method
WIFI-Direct
1) Device Connect Method
• Press ‘Wi-Fi Direct’. If ‘Wi-Fi’ is disabled ‘Wi-Fi’ will be turn on automatically.
2) Select Device
• After searching Peer you can see printer list that is available.
• Select printer for connectivity.
3) Device Connect
• Press WPS or Connect button of printer for connectivity.
• Once SPDS has connected you can see User Information Consent Screen.
4) Fail Device Connect
• When your printer firmware is not supported by SPDS a temporary device error pop-up message will occur.

4. Troubleshooting
WIFI-Direct with NFC

1) Preparation
• After checking NFC availability of your device find NFC Tag.
• Go to Setting of your Phone, enable the NFC function.
2) NFC Tag
• After login select NFC protocol on your device at ‘Device Connect Method’.
3) Connect Device
• When NFC tagging ‘Wi-Fi Direct’ device connection is made confirmation window pops up.
• Unlike ‘Wi-Fi Direct’ NFC Tagging method is directly connected to the printer. The list of available devices
is omitted.

4. Troubleshooting
USB-OTG
• Connect to Printer using USB (OTG) cable.
• Press ‘USB OTG)’ after ‘printer is connected’ message at the top of screen.
2) Confirm USB Authority
• Press ‘OK’ when pop-up occurs. Once SPDS has connected you can see User Information Consent Screen.
Without Connection
• Press ‘Without Connection’.
• Need no connection to device ‘Approval process of user information’ is omitted.
2) Initial Screen
• -You can see initial screen does not include any device information.

4. Troubleshooting
4.10.1.6. Consent to customer information
1) Confirm Registered User Information
• When customer consent has been completed this screen comes out.
• If user information is correct press ‘YES’. Press ‘NO’ for customer consent.
2) Customer Information Consent
• Customer consent has not been completed this screen comes out.
3) Input information
• Check the checkbox after reading terms.
• Input name, company, e-mail of customer, and then press ‘Consent’.

4. Troubleshooting
4.10.2. SPDS Menu Introduction
4.10.2.1. Error Mode
Device Error Inquiry

1) Menu Screen
• At menu screen error mode menu comes out by press error icon.
• As a subordinate menu of error mode there are Device Error, Action Guide, Corrective History, Requesting
Statistics, and Movie Guide.
2) Error Inquiry
• Error Code of Connected device shows by pressing ‘device error inquiry’.
3) Detailed Inquiry
• You can see detailed information of connected device by selecting Error code.
4) When there is no error
• If connected device has no error code pop-up comes out.
5) Auto Complete
• If you input more than two characters, Error Code auto complete function is offered.

4. Troubleshooting
Action Guide
1) Menu Screen
• Select Error → Action Guide → Service Bulletin.
2) Search Condition
• You can search by input Basic model, Title, Doc No, Start Date, End Date.
• Start Date and End date is requirement condition.
3) Select Date
• When click Start Date or End date, calendar comes out, you can select date.
4) Conduct Search
• After input search condition conduct search.
5) Result list
• The results of search condition comes out as a list.
6) See the detail
• By selecting items from list you can see detail.

4. Troubleshooting
Connected Device History

1) Menu Screen
• Press Error → Corrective History → Connected Device History.
2) Initial Screen
• As a subordinate menu of Connected Device History there are History of Each Error Code, History of Each
Corrective Part and History of Each Service Engineer.
3) Subordinate Menu Selection
• Corrective Histories are listed by selecting menu.
4) See the detail
• Detailed Action comes out by selecting Corrective history list.

4. Troubleshooting
Requesting Statistics
1) Menu Screen
• Press ‘Requesting Statistics’ of Error mode.
2) Authority Confirm
• Requesting Statistics require administrator authority. So if you have no administrator authority, you cannot use
this function.
3) Requesting Statistics
• Usage/Statistics History will be sent to e-mail of requester.

4. Troubleshooting
Movie Guide
1) Menu Screen
• Press ‘Movie Guide’ of Error Mode.
2) Search Condition
• Movie list comes out related to Error Code. Select movie that you want.
3) Check SD Card
• Check whether selected movie exist.
NOTE
If SD Card of the mobile phone does not exist it is not downloaded.
• If there is movie at SD Card, movie will be played.
• If movie does not exist a download confirmation pop-up comes out.
NOTE
Movie is saved to SD Card. (/Card/Android/data/com.sec.spds/files/video/)
4) Play Movie
• Play Movie that exist in SD card.
• Movie support landscape mode.

4. Troubleshooting
4.10.2.2. Diagnosis Mode
1) Menu Screen
• Diagnosis mode allows user to diagnosis or check status of connected device.
• SHADING TEST is menu that report status of SCANNER.
2) Subordinate Menu Selection
• Diagnosis mode consist of ON/OFF, HIGH/LOW, OPEN/CLOSE, INSTALL/UNINSTALL, 3DIGI.
• Only ON/OFF run diagnosis by Start Button.
• Other function except ON/OFF Diagnosis Mode indicate status value of connected device.
3) Device Sleep Mode
• If device status is sleep you can use diagnosis mode after wake-up process.
4) Device in use
• However, wake-up device you cannot use diagnosis before status become ready.

4. Troubleshooting
4.10.2.3. Test Mode
1) Menu Screen
• Press Test → Printout Pattern.
2) Printout Pattern
• You can print by selecting Printout pattern, Paper size, 1 sided, Simplex/2 sided, Duplex, Number of Pages to Print.
• There are five types of pattern. 5%, Skew, Black, Solid, Prints out a blank sheet.
• There are four types of pattern. A4, Letter, A3, Ledger.
• 1 sided, Simplex/2 sided, Duplex, Number of Pages to Print is only enable at ‘Prints out a blank sheet’.
• ‘Prints out a blank sheet’ 1 to 100 can be entered.
3) Print
• When press Print, options set in the print are utilized.

4. Troubleshooting
4.10.2.4. Information Mode
Configuration Menu
1) Menu Screen
• Information Mode consist of Configuration, Supplies, Network, Fax report, Tech mode.
2) Configuration
• Configuration mode consist of Preferences Information, Date of First Set Installation, Firmware information.
3) Preferences Information
• Preferences Information indicates Model Name, Device Serial Number, Date of Installation, Firmware Version.
4) Date of First Set Installation
• Date of First Set Installation, Firmware information indicate each information.
5) Print
• Press ‘Print’, information indicated on UI will print out.

4. Troubleshooting
Other Menu
1) Supplies
• Supplies indicate Supplies information of connected device.
2) Network
• Network indicate Network information of connected device.
3) Fax Report
• FAX REPORT Fax Sent, Fax Received, Fax Protocol Dump, Fax Diagnostics .

4. Troubleshooting
4.10.2.5. Service Mode
Cloning Menu
1) Menu Screen
• Press Service button
• Press Cloning menu.
2) Admin Login
• Input admin account of connected device and press Login Button.
3) Export
• Export data of printer press ‘OK’.
4) Import
• Importing data of data that exported from connected printer press ‘OK’.
5) Complete
• After end of Import press ‘OK’, Export menu ends.
• Device will reboot.

4. Troubleshooting
Send Debug Log

1) Menu Screen
• Press ‘Service’.
• Press ‘Send Debug Log’.
2) Select Date
• Select Date. Press request button.
3) Transport Position Selection-1

• Log names that can transport are indicated on screen.
• Select save method (SD Card)
4) SD Card Transport Complete

• If you select SD Memory, Log will be saved at ”/Phone/SPDS/DEBUGLOG”.
• Press ‘OK’, then ‘Send Debug Log’ Menu end.
5) Transport Position Selection-2

• Log names that can transport are indicated on screen. Select save method(Server)
6) Server Transport Complete

• After completing upload pop-up comes out.
• Press ‘OK’ then ‘Send Debug Log’ Menu end.

4. Troubleshooting
IP Settings
1) Menu Screen
• Press Service → Device Settings. Press IP Settings.
2) IP Setting
• Input IP Address, Subnet Mask, Gateway.
• Press OK.
3) Change Complete
• If IP changing complete normally, above pop-up comes out.
• Press ‘OK’, then ‘IP Setting’ Menu end.

4. Troubleshooting
Counter Initialization
1) Menu Screen
• Press Service → Device Settings. Press Counter Initialization
2) Counter Initialization
• Select item to initialize.
3) Initialization Complete
• If initialization complete normally, pop-up comes out. Press ‘OK’ you can initialize other counter value.

4. Troubleshooting
Footer ON/OFF
1) Menu Screen
• Press Service → Device Settings. Press Footer ON/OFF.
2) Footer Setting
• When press ‘ON’ button, activate Footer value.
• When press ‘OFF’ button, inactivate Footer value.
3) Footer Change Request
• If Footer Setting is requested normally toast message will occur.

4. Troubleshooting
4.10.3. Corrective Upload
1) Menu Screen
• You can go to Corrective Screen by pressing ‘Corrective’.
2) Confirmation Window before Shutdown.
• Before shutdown App. upload Corrective is required.
• You can go to Corrective Screen by Press ‘OK’.
• If you shutdown App forcibly without upload Corrective will be aggregated with abnormal action.
3) Corrective
• In the Corrective you can input Part of Action, Detailed Action, Attached Image.
4) Select Part for Action
• Part for Actions are Feeding, Main board, Delivery, Belt, Scan, Sensor, Power, Fixing, Option, Fax, Frame,
Phenomenon, LSU, Application, Driver, Firmware, Others.
5) Input Detailed Action
• Part of Action and Detailed Action are required.
• Input requirements and press ‘Upload’ button

4. Troubleshooting
4.10.4. Exceptions
Exceptions (Device Interface)

1) Menu Screen
• Need to I/F the device menu first check the connection status of the device.
• If connection between App and device ( e.g. device reboot, Timeout ), go to device connection menu.
2) Disconnected Devices
• For App reconnect to device go to device connection menu before indicate subordinate menu.
3) Subordinate Menu
• If device connection perform normally you can see subordinate menu.

4. Troubleshooting
Exceptions (Server Interface)

1) Menu Screen
• Need to Server I/F the device menu first check the connection status of network (3G, LTE, WIFI).
2) Network Error Occurrence
• When network isn’t connected (3G, LTE, WIFI), try search.
3) Error Message
• If network error (3G, LTE, WIFI) occur, error message pop-up print out and cannot proceed.
• In this case it is necessary to check the network.
4) Network Normal
• When network (3G, LTE, WIFI) is connected normally, try search.
5) Normal Result
• Because there is no problem with the network App will show normal results.

5.1. Connection Diagram (FUSER_EXIT_DUPLEX_TONER)

HDD
1
2
3
4
5
6
7
8
9
1
2
3
4
SATA SIGNAL
SATA POW ER
CN22-SATA POW ER
CN19-SATA SIGNAL
SATA_RX_N
SATA_RX_P
SATA_TX_P
SATA_TX_N
5V2_SATA
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
EXIT/DUPLEX
I.5m m /14*2P
Color
CN33 EXIT/DUPLEX
4 1 14 1 A_DUP_RET TONER CRUM
DUP_RET 3 2 13 2 nA_DUP_RET 1.5mm /17*1P
M OT STEP 2 3 12 3 nB_DUP_RET CN50 TB CRUM JC39-02261A JC39-02214A
1 4 11 4 B_DUP_RET 3.3V_CRUM 1 5 1 4 1 4
SDA_CRUM_ TB_K 2 4 2 3 2 3
5 10 5 A_DUPLEX1 3 3 3 2 3 2 TB CRUM K
4 SCL_CRUM_ TB_K
3 6 9 6 nA_DUPLEX1 DGND 4 2 4 1 4 1
DUP1 M OT STEP 2 7 8 7 nB_DUPLEX1 1 5
1 8 7 8 B_DUPLEX1
JC39-02214A
3.3V_CRUM 5 5 1 4 1 4
3 9 6 9 R_5V_PS SDA_CRUM_ TB_C 6 4 2 3 2 3
Dup RETURN 10 5 10 DGND 7 3 3 2 3 2 TB CRUM C
2 SCL_CRUM_ TB_C
SEN 11 4 11 nSENSE_P_DUP_RETURN DGND 8 2 4 1 4 1
1
1 5
2 12 3 12 DGND
EXIT TEM P JC39-02214A
1 13 2 13 ADC_EXIT_TEMP 3.3V_CRUM 9 5 1 4 1 4
SDA_CRUM_ TB_M 10 4 2 3 2 3
14 1 14 NC SCL_CRUM_ TB_M 11 3 3 2 3 2 TB CRUM M
JC39-02189A JC39-02188A
DGND 12 2 4 1 4 1
3 1 14 15 R_5V_PS 1 5
BINFULL1 2 2 13 16 DGND
1 3 12 17 nSENSE_P_BINFULL_EXIT1 3.3V_CRUM 13 1
JC39-02214A
5 4 1 4
SDA_CRUM_ TB_Y 14 4 2 3 2 3
3 1 5 4 11 18 R_5V_PS SCL_CRUM_ TB_Y 15 3 3 2 3 2 TB CRUM Y
BINFULL2 2 2 4 5 10 19 DGND DGND 16 2 4 1 4 1
1 3 3 6 9 20 nSENSE_P_BINFULL_EXIT2 1 5
NC 17
JC39-02190A
7 8 21 R_5V_PS
4 2 8 7 22 DGND
5 1 9 6 23 nDETECT_JOB_SEP
TONER CRUM
1.5mm /17*1P M ono
SOL
EXIT GATE 3 10 5 24 24V4

SOLENOID 2 CN50 TB CRUM
1
JC39-02237A 5
11 4 25 EN_EXIT_SOL 3.3V_CRUM 1 1 4 1 4
SDA_CRUM_ TB_K 2 4 2 3 2 3
12 3 26 R_5V_PS 3 3 2 3 2 BTL CRUM
3 SCL_CRUM_ TB_K 3
DUP 13 2 27 DGND DGND 4 2 4 1 4 1
2
JAM 1 14 1 28 nSENSE_JAM_ DUPLEX1 1 5
1
3.3V_CRUM 5 5 1 4 1 4
SDA_CRUM_ TB_C 6 4 2 3 2 3
FUSER DRIVE 3 2 3 2 DEVE CRUM
SCL_CRUM_ TB_C 7 3
1.5mm /16*2P 8 2 4 1 4 1
DGND
1 5
JC39-02195A CN30 FUSER DRIVE
10 1 R_DGND 3.3V_CRUM 9
9 2 CLK_BLDC_FUSER 5V_PS 10 2 1 ERASER LED
8 3 nREADY_BLDC_FUSER M_ ON_ERASER 11 1 2
7 4 nEN_BLDC_FUSER
FUSER BLDC
6 5 DGND 12
BLDC 5 6
NC
R_DGND 3.3V_CRUM 13
4 7 DGND SDA_CRUM_ TB_Y 14
3 8 DGND SCL_CRUM_ TB_Y 15
2 9 24V2_SW DGND 16
1 10 24V2_SW NC 17
3 11 FAN_FUSER_OUT
FUSER OU T 2 12 FB_OUT_FAN_FUSER_OUT
FAN 1 13 DGND
SIDE COM 1 3 14 DGND

2 2 TONER RESERVOIR
N.O. 15 COVER_OPEN_SIDE
COVER OPEN
N.C. 3 1 16 nCOVER_OPEN_SIDE
I.5mm /11*2P Color
CN27 TonerM otor/L
ock JC39-02257A
4 17 A_FUSER_REL A_TNR_SUP_KC 1 4
TONER
3 18 nA_FUSER_REL nA_TNR_SUP_KC 2 3
SUPP
FUSER REL M OT STEP 2 19 nB_FUSER_REL nB_TNR_SUP_KC 3 2
M OT_KC
1 20 B_FUSER_REL B_TNR_SUP_KC 4 1
3 3
1 9 21 FAN_EXIT1 R_5V_PS 5 TNR LOCK
2 2
EXIT FAN 1 2 8 22 FB_OUT_FAN_EXIT1 DGND 6 SENS_KC
1 1
3 7 23 DGND nSENSE_TNR_LOCK_KC 7
3 4 6 24 FAN_EXIT2 A_RES_KC 8 4
EXIT FAN 2 2 5 5 25 FB_OUT_FAN_EXIT2 nA_RES_KC 9 3 RESERVOIR
1 6 4 26 DGND nB_RES_KC 10 2 M OT_KC
JC39-02191A B_RES_KC 11 1
3 7 3 27 FAN_EXIT3
EXIT FAN 3 2 8 2 28 FB_OUT_FAN_EXIT3 A_TNR_SUP_M Y 12 4
29 DGND 13 TONER
1 9 1 nA_TNR_SUP_M Y 3
SUPP
nB_TNR_SUP_MY 14 2
30 R_5V_PS 15 M OT_M Y
3 3 B_TNR_SUP_M Y 1
Fuser 2 31 DGND
2
POSI 1 32 nSENS_FUSER_POS1 R_5V_PS 16 3
1 RES LOCK
DGND 17 2
nSENSE_TNR_LOCK_MY 18 1 SENS_M Y
FUSER DRAWE R
A_RES_MY 19 4
I.5m m /9*2P
JC39-02218A JC39-02217A nA_RES_M Y 20 3 RESERVOIR
CN40 FUSER DRAW ER nB_RES_M Y 21 2 M OT_M Y
1 11 1 DGND B_RES_M Y 22 1
3 2 10 2 DGND
FUSER NC THERM
CENTER
2
1
3
4
9
8
3
4
NC_C_TD
NC_C_TC
TONER RESERVOIR
3 5 7 5
I.5mm /11*2P M ono
NC THERM DGND CN27 TonerM otor/L
ock JC39-02242A
2 6 6 6 NC_S_TD A_TNR_SUP_KC 1 4
SIDE TONER
1 7 5 7 NC_S_TC nA_TNR_SUP_KC 2 3
SUPP
nB_TNR_SUP_KC 3 2
M OT
8 4 8 nDETECT_FUSER B_TNR_SUP_KC 4 1
9 3 5 3
R_5V_PS TNR LOCK
10 2 6 2
DGND SENS
21P-RW ZV-K4GG-P4
21R-RW ZV-K2GG-P4
11 1 7 1
nSENSE_TNR_LOCK_KC
JC39-02243A
JST
JST
A_RES_KC 8 7 1 4
nA_RES_KC 9 6 2 3 RESERVOIR
6 1 10 9 R_5V_PS 10
nB_RES_KC 5 3 2 M OT
5 2 9 10 3.3V_CRUM 11
B_RES_KC 4 4 1
4 3 8 11 ADC_CURL_TEST
3 7 3 5 3
4 12 DGND RES FULL
FUSER 2 6 2 6 2
5 13 SDA2_FUSER SENS
EEPROM 1 5 1 7 1
6 14 SCL2_FUSER
7 4 15 THERM_ REAR1
8 3 16 THERM_ REAR2
JC39-02244A 4
DGND 12 4 1
M_ TC_VIN_K 13 3 2 3 TC
9 2 17 THERM_ FRONT1 14 2 3 2 SENSOR
24V1_TC
10 1 18 THERM_ FRONT2 15 1 4 1
M_ TNR_VCON _K
R_5V_PS 16
DGND 17
nSENSE_RES_FULL 18
A_RES_MY 19
nA_RES_M Y 20
nB_RES_M Y 21
To FDB B_RES_M Y 22

5.2. Connection Diagram (Scanner)
???
CN55 ???
1 3.3V_M ICOM
2 PA30|SWCLK
3 PA31|SW DIO
4 DGND
5 nRST_XM EGA
DSDF
-1.5mm /17*2P
CN42 DSDF
M S1_STEP_SCAN 1
CUR_STEP_SCAN 2
DIR_STEP_SCAN 3
nEN_STEP_SCAN 4
PLS_STEP_SCAN 5
PW M _W LED 6
nCOVER_OPEN_PLATEN2 7
nCOVER_OPEN_PLATEN1 8
??? nSENSE_SCAN_HOM E 9
-1.5mm /6*1P nSENSE_APS2 10
nSENSE_APS1 11
CN51 ??? nDETECT_RSDF 12
6 1 6 1 DGND nSENSE_PAPER_RADF 13
5 2 5 2 nSENSE_P_REGI_R1 nSENSE_SCAN_POS_1 14
4 3 4 3 5V_PS TXD_DSDF 15
3 4 3 4 DGND RXD_DSDF 16
2 5 2 5 nSENSE_P_REGI_R2 nRST_RSDF 17
1 6 1 6 5V_PS nSENSE_SCAN_POS_2 18
DGND 19
DGND 20
DGND 21
DGND 22
3.3V_SCAN 23
DGND 24
5V_W KUP 25
DGND 26
5V_SCAN 27
5V_SCAN 28
DGND 29
24V_SCAN 30
24V_SCAN 31
24V_SCAN 32
24V_SCAN 33
M S2_STEP_SCAN 34
DCIS
40P FFC
CN43 DCIS
CLK_M AIN_DCIS_P 1
CLK_M AIN_DCIS_N 2
DGND 3
LVDO_DCIS_4_P 4
LVDO_DCIS_4_N 5
DGND 6
LVDO_DCIS_3_P 7
LVDO_DCIS_3_N 8
DGND 9
LVDO_DCIS_2_P 10
LVDO_DCIS_2_N 11
DGND 12
RX_CLK_DCIS_P 13
RX_CLK_DCIS_N 14
DGND 15
DCIS
LVDO_DCIS_1_P 16
LVDO_DCIS_1_N
DSDF
17
DGND 18
LVDO_DCIS_0_P 19
LVDO_DCIS_0_N 20
DGND 21
DGND 22
SDI_DCIS 23
SCLK_DCIS 24
ScannerUnit
SDO_DCIS 25
SLOAD_DCIS 26
DGND 27
DGND 28
PI_SH_DCIS 29
DGND 30
3.3V_SCAN 31
3.3V_SCAN 32
3.3V_SCAN 33
3.3V_SCAN 34
3.3V_SCAN 35
3.3V_SCAN 36
3.3V_SCAN 37
3.3V_SCAN 38
DGND 39
DGND 40
CCDM
BBP 50P FFC
50P
CN41 BBP CN44 CCDM
1 5V DGND 1
2 NEN_STEP_DUPLEX1 CLK_M AIN_CCDM_ P 2
3 EN_M P_CLUTCH CLK_M AIN_CCDM_ N 3
4 NEN_STEP_FUSER_REL DGND 4
5 COVER_OPEN_SIDE SLOAD_CCDM 5
6 NEN_STEP_TNR_SUP_KC SCLK_CCDM 6
7 DIR_STEP_TNR_SUP_KC SDI_CCDM 7
8 EN_EXIT_SOL DGND 8
9 NEN_STEP_DUP_RET PITG_CCDM 9
10 NSENSE_T1_POS nRST_AFE 10
11 NEN_STEP_TNR_SUP_KC SDO_CCDM 11
12 PW M _M P_SOL DGND 12
13 CLK_BLDC_FUSER LVDO_CCDM _4_N 13
14 NEN_BLDC_FUSER LVDO_CCDM _4_P 14
15 COVER_OPEN_FRONT DGND 15
16 NSENSE_P_EM PTY2 LVDO_CCDM _3_N 16
17 PLS_STEP_T1 LVDO_CCDM _3_P 17
18 NEN_STEP_T1 DGND 18
19 nEN_STEP_FEED RX_CLK_CCDM _N 19
20 NSENSE_FUSER_POS1 RX_CLK_CCDM _P 20
21 nEN_STEP_REGI DGND 21
22 PLS_STEP_DUPLEX1 LVDO_CCDM _2_N 22
23 nSENSE_CURL1 LVDO_CCDM _2_P 23
24 NSENSE_P_BINFULL_EXIT1 DGND 24
25 DIR_STEP_TNR_SUP_M Y LVDO_CCDM _1_N 25
26 NEN_STEP_DUPLEX2 LVDO_CCDM _1_P 26
27 PLS_STEP_DUP_RET DGND 27
28 NSENSE_JAM_ DUPLEX1 LVDO_CCDM _0_N 28
29 NSENSE_P_DUP_RETURN LVDO_CCDM _0_P 29
30 NSENSE_P_REGI DGND 30
31 PLS_STEP_DUPLEX2 3.3V_SCAN 31
32 PLS_STEP_FEED 3.3V_SCAN 32
33 PLS_STEP_PICKUP1 3.3V_SCAN 33
34 PLS_STEP_PICKUP2 3.3V_SCAN 34
35 PLS_STEP_REGI 3.3V_SCAN 35
36 nSENSE_CURL2 3.3V_SCAN 36
37 NSENSE_P_PRE_FEED1 3.3V_SCAN 37
38 NSENSE_P_PRE_FEED2 3.3V_SCAN 38
39 NSENSE_P_FEED DGND 39
40 NSENSE_P_FUSER_OUT DGND 40
41 NSENSE_JAM_ DUPLEX2 5V_SCAN 41
42 NEN_STEP_PICKUP1 5V_SCAN 42
43 NEN_STEP_PICKUP2 5V_SCAN 43
44 ADC_FB_FR 5V_SCAN 44
45 ADC_FB_REGI DGND 45
46 ADC_FB_FEED DGND 46
47 FB_DUP2 10V_CCD 47
48 FB_PU1 10V_CCD 48
49 FB_PU2 10V_CCD 49
50 DGND 10V_CCD 50
BBP
16P
CN54 BBP
1 5V
2 NEN_BLDC_OPC_K
3 NREADY_BLDC_OPC_K
4 NEN_BLDC_OPC_C
5 NREADY_BLDC_OPC_C
6 NEN_BLDC_OPC_M
7 NREADY_BLDC_OPC_M
8 NEN_BLDC_OPC_Y
9 NREADY_BLDC_OPC_Y
10 NSENSE_SHUT_ACR
11 NREADY_BLDC_FUSER
12 NEN_STEP_RES_KC
13 DIR_STEP_RES_KC
14 NEN_STEP_RES_M Y
15 DIR_STEP_RES_M Y
16 DGND

5.3. Connection Diagram (LSU_OPE_USB)

SPEAKER
HUB
FDIJOINT
-1.5m m / 11P
CN20 FDIJO INT

DGND 1
DGND 2
3.3VSUSP 3
5V_SUSP 4
nDETECT_FDI 5
NOT_READY_FDI 6
EN_COPY_EXIT_FDI 7
nEN_COPY_CNT_FDI 8
nDETECT_PSIZE_FDI 9
nDETECT_COLOR_DFI 10
nEN_FDI 11
N/W RJ45
CN1 NETW ORK 1
TD+ 2
TD- 3
RD+ 4
TERM1 5
LSU SIGNAL M Y
ColorOnly 50FFC
TERM2
RD-
6
7
CN25 LSU SIGNAL TERM3 8
MY TERM4 9
1 DGND GREEN- 10
2 PW M _LD_POW ER_M GREEN+ 11 NTW ORK
3 DGND YELLOW - 12
4 nHSYNC_M _DP YELLOW +
5 nHSYNC_M _DN
6 DGND
7 nVDO_M _B1_DP
USB
8 nVDO_M _B1_DN
9 DGND CN14 USB 1
10 nSH_M1 USB3D_VBUS 2
11 nSH_M2 USB3D_DN 3
12 DGND USB3D_DP 4
13 VDO_M _B2_DP DGND 5
14 nVDO_M _B2_DN USB3D_PXN 6
15 DGND USB3D_PXP 7
16 nVDO_M _B3_DP DGND 8
17 nVDO_M _B3_DN USB3D_RXN 9
18 DGND USB3D_RXP
19 nSH_M3
20 nSH_M4
21 DGND PC
22 nVDO_M _B4_DP
23 nVDO_M _B4_DN USB HOST Ch2
24 DGND
25 CN17 USB HOST Ch2 1
nLDON_LSU_M
26 USB3H_VBUS_REAR2 2
nLDON_LSU_Y
27 USB3H_REAR2_DN 3
DGND
28 USB3H_REAR2_DP 4
nHSYNC_Y_DP
29 DGND 5
nHSYNC_Y_DN
30 USB3H_REAR2_RXN 6
DGND
31 USB3H_REAR2_RXP 7
nVDO_Y_B1_DP
32 DGND 8
VDO_Y_B1_DN
33 USB3H_REAR2_TXN 9
DGND
34 USB3H_REAR2_TXP
nSH_Y1
35 nSH_Y2
36 DGND
EXT.DRIVE
37 nVDO_Y_B2_DP
38 nVDO_Y_B2_DN USB HOST Ch1
39 DGND
40 nVDO_Y_B3_DP CN16 USB HOST Ch1 1
41 nVDO_Y_B3_DN USB3H_VBUS_REAR1 2
42 DGND USB3H_REAR1_DN 3
43 nSH_Y3 USB3H_REAR1_DP 4
44 nSH_Y4 DGND 5
45 DGND USB3H_REAR1_RXN 6
46 nVDO_Y_B4_DP USB3H_REAR1_RXP 7
47 nVDO_Y_B4_DN DGND 8
48 DGND USB3H_REAR1_TXN 9
49 PW M _LD_POW ER_Y USB3H_REAR1_TXP
50 DGND
LSU LD
(COLR) CARD READER
LSU SIGNAL KC
60FFC
CN2 LSU SIGNALKC
1 DGND
2 DGND
3 DGND
4 DGND
5 DGND
6
7
DGND
DGND
LSU
40FFC
Mo no Only
8 DGND
9 DGND CN28 LSU
10 PW M _LD_POW ER_C DGND 1
11 DGND NC 2
12 nVDO_C_B4_DN 24V3 3
13 nVDO_C_B4_DP 24V3 4
14 DGND NC 5
15 nSH_C4 DGND 6
16 nSH_C3 nSTART_LSU_M OT 7
17 DGND nREADY_LSU 8
18 nVDO_C_B3_DN CLK_LSU_M OT 9
19 nVDO_C_B3_DP 5V_LSU 10
20 DGND 5V_LSU 11
21 nVDO_C_B2_DN DGND 12
22 nVDO_C_B2_DP PW M _LD_POW ER_K 13
23 DGND DGND 14
24
25
nSH_C2
nSH_C1
nHSYNC_K_DP
nHSYNC_K_DN
15
16
LSU LD
26 DGND DGND 17
27
28
nVDO_C_B1_DN nVDO_K_B1_DP 18
19
(M ON O)
nVDO_C_B1_DP nVDO_K_B1_DN
29 DGND DGND 20
30 nHSYNC_C_DN nSH_K1 21
31 nHSYNC_C_DP nSH_K2 22
32 DGND DGND 23
33 nLDON_LSU_C nVDO_K_B2_DP 24
34 nLDON_LSU_K nVDO_K_B2_DN 25
35 DGND DGND 26
36 nVDO_K_B4_DN nVDO_K_B3_DP 27
37 nVDO_K_B4_DP nVDO_K_B3_DN 28
38 DGND DGND 29
39 nSH_K4 nSH_K3 30
40 nSH_K3 nSH_K4 31
41 DGND DGND 32
42 nVDO_K_B3_DN nVDO_K_B4_DP 33
43 nVDO_K_B3_DP nVDO_K_B4_DN 34
44 DGND DGND 35
45 nVDO_K_B2_DN nLDON_LSU_K 36
46 nVDO_K_B2_DP DGND 37
47 DGND DGND 38
48 nSH_K2 DGND 39
49 nSH_K1 CON_DETECT_LSU 40
50 DGND
51 nVDO_K_B1_DN
52 nVDO_K_B1_DP
53 DGND
54 nHSYNC_K_DN
55 nHSYNC_K_DP
56 DGND
57 PW M _LD_POW ER_K
58 DGND
59 ADC_LSU_TEMP
60 CON_DETECT_LSU

5.4. Connection Diagram (Side_MP_Feed_Regi_Pick-Up)
REAR/FRONT/LED
ColorOnly I.5m m /10*2P TB CRUM
1.5m m /8*1P Color
JC39-02229A JC39-02230A CN35 REAR/FRONT/LED
1 1 15 1 ACR_REAR CN48 TB CRUM
LEFT 2 2 14 2 5VA ADC_CTD_CENTER_P 1
ACR 3 3 13 3 DGND 5VA 2
REAR 4 4 12 4 NC DGND 3
5 5 11 5 PW M _ACR_LED_REAR ADC_CTD_CENTER_S 4
JC39-02239A JC39-02258A
1 6 10 6 ADC_ACR_FRONT_P R_5V_PS 5 1 3 3
2 2 T1 POSI
RIGHT 2 7 9 7 5VA DGND 6 2
3 1 SENSOR
ACR 3 8 8 8 DGND SENS_T1_POS 7 1
FRONT 4 9 7 9 NC
5 10 6 10 PW M _ACR_LED_FRONT DGND 8 3
nSENSE_P_REGI 9 PAPER REGI
2
5V_PS 10 SENSOR
1 11 5 11 ADC_CTD_CENTER_P 1
2 12 4 12 5VA
CENTER
3 13 3 13 DGND
CTD
4 14 2 14 ADC_CTD_CENTER_S TB CRUM
5 15 1 15 PW M _ACR_LED_CENTER 1.5m m /8*1P
CN48 TB CRUM
M ono
ACR SHUTTER 2 1 5 16 DGND ADC_CTD_CENTER_P 1 JC39-02236A 7 1 JC39-02235A 1
M OT DC 1 2 4 17 OUT_DC_ACR_SHUT1 6 2
5VA 2 2
JC39-02220A DGND 3 5 3 3 CTD SENSOR
3 3 3 18 R_5V_PS 4 4
ACR SHUTTER ADC_CTD_CENTER_S 4 4
2 4 2 19 DGND 3 5
SENS PW M _ACR_LED_CENTER 5 5
1 5 1 20 nSENSE_SHUT_ACR
DGND 6 2 6 2 INNER
ADC_INNER_TEM P 7 1 7 1 TEM P
PICKUP 8
DGND 3 1 3
9 PAPER REGI
nSENSE_P_REGI 2 2 2
10 SENSOR
CN49 PICKUP 5V_PS 1 3 1
JC39-02234A 1 JC39-02204A
3 1 9 R_5V_PS
PAPER_EM PTY1 2 2 8 2 DGND
1 3 7 3 nSENSE_P_EM PTY1
JC39-02201A 4 m icroSD SOCKET
3 4 6 R_5V_PS
2 5 5 5 DGND
PAPER_LIFT1 CN12 microSD SOCKET
1 6 4 6 nSENSE_C_LIFT1 1
DATA2_SD
2
3 7 3 7 DGND DATA3_SD
3
FEED1 2 8 2 8 nSENSE_P_PRE_FEED1 CM D_SD
4
1 9 1 9 5V_PS 3.3V
5
CLK_SD
6
4 10 A_PICKUP1 DGND
7
3 11 nA_PICKUP1 DATA0_SD
PICKUP1 8
M OT STEP 2 12 nB_PICKUP1 DATA1_SD
9
1 13 B_PICKUP1 DGND
10
DGND
11
3 14 R_5V_PS DGND
1 10 12
2 15 DGND DGND
PAPER_EM PTY2 2 9 13
1 16 nSENSE_P_EM PTY2 DGND
3 8 14
DGND
3
JC39-02202A 17 R_5V_PS
4 7
2 5 6 18 DGND M SOK
PAPER_LIFT2
1 6 5 19 nSENSE_C_LIFT2
CN21 M SOK
20 DGND 1
3 7 4 DGND
FEED2 21 nSENSE_P_PRE_FEED2 2
2 8 3 SCK_M SOK
22 5V_PS 3
1 9 2 DGND
4
10 1 M SOI_M SOK
5
DGND
4 23 A_PICKUP2 6
nSS_M SOK
PICKUP2 3 24 nA_PICKUP2 7
DGND
M OT STEP 2 25 nB_PICKUP2 M SIO_M SOK
8
1 26 B_PICKUP2 9
3_3V_PS
10
SCL0_M SOK
11
3_3V_PS
FEED_REGI 12
SDA0_M SOK
DEBUGGER M AIN
CN53 FEED_REGI
JC39-02336A -2.0mm /4*1P
1 6 1 A_FEED
2 5 2 24V4 CN8 DEBUGGER M AIN
FEED M OT
STEP 3 4 3 nA_FEED 3.3V 1
4 3 4 nB_FEED RXD_M CB 2
HYBRID
5 2 5 24V4 TXD_M CB 3
6 1 6 B_FEED DGND 4
1 6 7 A_REGI DEBUGGER SCAN

2 5 8 24V1_SW -2.0mm /4*1P
REGIM OT
STEP 3 4 9 nA_REGI
CN9 DEBUGGER SCAN
4 3 10 nB_REGI
HYBRID 3.3V 1
5 2 11 24V1_SW
RXD_SCB 2
6 1 12 B_REGI
TXD_SCB 3
M P CLUTCH DGND 4
1 2 13 24V4
CL 2 1 14 EN_M P_CLUTCH
DEBUGGER ENGINE
-2.0mm /4*1P
SIDE /MP CN10 DEBUGGER
ENGINE
1.5m m /20*2P
3.3V 1
JC39-02206A JC39-02205A CN32 SIDE / M P /PTB RXD_ENG 2
2 1 5 1 20 1 24V3 TXD_ENG 3
M P SO L
1 2 4 2 19 2 PW M _MP _SOL DGND 4
INNER
3
JC39-02210A 3 ENGINE PANEL
3 3 3 18 R_5V_PS FINISHER
M P EM PTY 2 4 2 4 17 4 DGND -1.5m m /5*1P
1 5 1 5 16 5 nSENSE_P_M P_EM PTY CN11 ENGINE PANEL
DGND 1
3 1 6 6 15 6 1.8V_PS 5V_SUSP 2
M P PAPER 2 2 5 7 14 7 ADC_P_M P_W IDTH RXD_ENG_PANEL 3
W IDTH 1 3 4 8 13 8 DGND R_5V_SUSP 4
JC39-02211A TXD_ENG_PANEL 5
3 4 3 9 12 9 R_5V_PS
M P PAPER
2 5 2 10 11 10 DGND
LENGTH
1 6 1 11 10 11 nSENSE_P_M P_LENGTH DUAL FAX
3 1 3 12 9 12 DGND CN24 DUALFAX

PRE FEED 2 2 2 13 8 13 nSENSE_P_FEED 5V_SUSP 1 FINISHER
1 3 1 14 7 14 5V_PS DGND 2
JC39-02208A 3.3V 3
3K
4 15 6 15 A_DUPLEX2 3.3V 4
DUP2 3 16 5 16 nA_DUPLEX2 DGND 5
M OT STEP 2 17 4 17 nB_DUPLEX2 DGND 6
1 18 18 B_DUPLEX2 CM L_M ODEM 1 7
3 CM L_M ODEM 2 8 *****-****/
19 2 19 NC AOUT0 9 M OLEX
20 1 20 NC AOUT1 10
nRST_M ODEM 1 11
JC39-02338A 1 6
JC39-02240A 1 10 1 20 21 R_5V_PS nCTS_M ODEM 1 12
3 54679-1619/
CURL1 2 2 5 2 9 2 19 22 DGND nCTS_M ODEM 2 13
M OLEX
1 3 4 3 8 3 18 23 nSENSE_CURL1 nRTS_M ODEM 1 14
nRTS_M ODEM 2 15
3 4 3 4 7 4 17 24 R_5V_PS DGND 16
CURL2 2 5 2 5 6 5 16 25 DGND nDETECT_MO DEM 1 17
1 6 1 6 5 6 15 26 nSENSE_CURL2 nDETECT_MO DEM 2 18
TXD_M ODEM1 19
4 7 4 TXD_M ODEM2 20
3 8 3 RXD_M ODEM1 21
PTB CRUM
2 9 2 RXD_M ODEM2 22
Mon o 1 10 1 nRI_MOD EM _1
nRI_MOD EM _2
23
24
nINT_M ODEM _1 25
nINT_M ODEM _2 26
nDCD_M ODEM _1 27
PTB 4 1 7 27 DGND nDCD_M ODEM _2 28
7 14
W ASTE 3 2 6 28 ADC_PTB_W TB_FULL nRST_M ODEM _2 29
8 13
FULL 2 3 5 29 EN_PTB_W TB_LED DGND 30
9 12
1 4 4 30 R_5V_PS
10 11
11 10 31 3.3V_CRUM
JC39-02207A 12 9 32 SCL2_PTB
13 8 33 SDA2_PTB
14 7 34 DGND
3 5 3 15 6 35 R_5V_PS
DUPLEX 6 2
2 16 5 36 DGND
JAM 2 7 1
1 17 4 37 nSENSE_JAM _DUPLEX2
3 1 3 18 3 38 R_5V_PS
P FUSER 39 DGND
2 2 2 19 2
OUT 40 nSENSE_P_FUSER_OUT
1 3 1 20 1
JC39-02209A
3 1 3
FAN
2 2 2
SIDE
1 3 1
To FDB
2-292246-2/
JC39-02338A JC39-02341A TYCO
3 1 6 1
CURL1 2 2 5 2
1 3 4 3
2-292249-2/
3 4 3 4 TYCO
CURL2 2 5 2 5
1 6 1 6
7
8 DCF
9
Color 10
LC T HCF

5.5. Connection Diagram (OPC_WTB_CST Lock)
T1 /ERASER /OPC CRUM

-1.5mm /16*2P OPC HOM E
CN36 T1 / ERASER /
JC39-02256A JC39-02255A OPC CRUM CN29 O PC HO M E
1 1 6 1 6 1 5V_PS
JC39-02240A
R_5V_PS 1 3
2 2 5 2 5 2 ON_ERASER_K DGND 2 2
3 3 4 3
nSENSE_OPC_HOM E_K 3 1
4 4 3 4 4 3 3.3V_CRUM
3 4 SDA_CRUM _OPC_K
2 R_5V_PS 4 3
5 2 5 2 5 SCL_CRUM _OPC_K
1 DGND 5 2
6 1 6 1 6 DGND nSENSE_OPC_HOM E_C 6 1
R_5V_PS 7 3
JC39-02256A DGND 8 2
1 1 6 1 6 7 5V_PS 9 1
nSENSE_OPC_HOM E_M
2 2 5 2 5 8 ON_ERASER_C
3 3 4 3 R_5V_PS 10 3
4 4 3 4 4 9 3.3V_CRUM 11 2
DGND
3 10 SDA_CRUM _OPC_C 12 1
nSENSE_OPC_HOM E_Y
2 5 2 5 2 11 SCL_CRUM _OPC_C
1 6 1 6 1 12 DGND
2 13 ADC_INNER_TEMP
1 14 DGND OPC K
15 NC
16 NC CN29 OPC K JC39-02239A
JC39-02256A 1 10
DIR_BLDC_OPC_K 9
1 1 6 1 6 17 5V_PS 2
CLK_BLDC_OPC_K 8
2 2 5 2 5 18 ON_ERASER_M 3
nREADY_BLDC_OPC_K 7
3 3 4 3 4
nEN_BLDC_OPC_K 6
4 4 3 4 4 19 3.3V_CRUM 5
3 20 SDA_CRUM _OPC_M
NC
6 5 BLDC
2 BRK_BLDC_OPC_K 4
5 2 5 2 21 SCL_CRUM _OPC_M 7
1 DGND 3
6 1 6 1 22 DGND 8
DGND 2
9
DGND 1
10
DGND
11
JC39-02256A NC
1 6 1 6 23 5V_PS 12
1
2 2 5 2 5 24 ON_ERASER_Y
3 3 4 3
4 4 3 4 4 25 3.3V_CRUM
3 26 SDA_CRUM _OPC_Y
2 5 2 5 2 27 SCL_CRUM _OPC_Y T/C SENSOR
1 6 1 6 1 28 DGND -1.5m m /15*2P
CN34 T/C SENSOR
1 4 29 A_T1 DGND 1 JC39-02260A JC39-02259A
2 3 30 nA_T1 4 1 4
TC_VIN_K 2 3 2 3
3 2 31 nB_T1 3
24V1_TC 2 3 2
4 1 32 B_T1 4
TNR_VCON_K 1 4 1
DGND 5 4 1
JC39-02259A 4
TC_VIN_C 6 3 2 3
24V1_TC 7 2 3 2
TNR_VCON_C 8 1 4 1
R_5V_PS 9
12 1 3
DGND 10
11 2 2
nSENSE_FULL_RES_K 11
10 3 1
R_5V_PS 12
9 4 3
DGND 13
BLDC OPC KCMY 8 5 2
nSENSE_FULL_RES_C 14
7 6 1
JC39-02342A
CN47 BLDC OPC NC 15
6 7 3
JC39-02232A KCM Y 5 8 2
10 1 DIR_BLDC_OPC_K 4 9 1
9 2 CLK_BLDC_OPC_K
8 3 nREADY_BLDC_OPC_K 3 10 3
7 4 nEN_BLDC_OPC_K 2 11 2
6 5 NC
BLDC 5 6 BRAKE_BLDC_OPC_K
1 12 1
4 7 DGND DGND 16 JC39-02259A
4 1 4
3 8 DGND TC_VIN_M 17
3 2 3
2 9 24V1_SW 24V1_TC 18
2 3 2
1 10 24V1_SW TNR_VCON_M 19
1 4 1
10 11 DIR_BLDC_OPC_C DGND 20
4 1
JC39-02259A 4
9 12 CLK_BLDC_OPC_C TC_VIN_Y 21
3 2 3
8 13 nREADY_BLDC_OPC_C 24V1_TC 22
2 3 2
7 14 nEN_BLDC_OPC_C TNR_VCON_Y 23
1 4 1
6 15 NC
BLDC 5 16 BREAK_BLDC_OPC_C R_5V_PS 24
4 17 DGND DGND 25
3 18 DGND nSENSE_FULL_RES_M 26
2 19 24V7
1 20 24V7 R_5V_PS 27
DGND 28
10 21 DIR_BLDC_OPC_M nSENSE_FULL_RES_Y 29
9 22 CLK_BLDC_OPC_M
8 23 nREADY_BLDC_OPC_M NC 30
7 24 nEN_BLDC_OPC_M
6 25 NC
BLDC 5 26 BREAK_BLDC_OPC_M
4 27 DGND
3 28 DGND
2 29 24V7
1 30 24V7 HVPS2 /SKEW MO TOR
-1.5mm /12*2P
10 31 DIR_BLDC_OPC_Y CN4 HVPS2 / SKEW CN2
9 32 CLK_BLDC_OPC_Y M O TOR
33 nREADY_BLDC_OPC_Y
JC39-02228A 12 nEN_DEVE_AC_K
8 nEN_DEVE_AC_K 1 12
7 34 nEN_BLDC_OPC_Y nEN_DEVE_AC_C 2 11 11 nEN_DEVE_AC_C
6 35 NC nEN_DEVE_AC_M 3 10 10 nEN_DEVE_AC_M
BLDC 5 36 BRK_BLDC_OPC_Y nEN_DEVE_AC_Y 4 9 9 nEN_DEVE_AC_Y
4 37 DGND ADC_READ_HVPS_24V 5 8 8 ADC_READ_HVPS_24V
3 38 DGND DGND 6 7 7 GND
2 39 24V5 DGND 7 6 6 GND
1 40 24V5 DGND 8 5 5 GND
3.3V_PS 9 4 4 3.3V
24V2_SW 10 3 3 24V
24V2_SW 11 2 2 24V
24V2_SW 12 1 1 24V
A_SKEW _Y 13 12
nA_SKEW _Y 14 11
B_SKEW _Y 15 10
nB_SKEW _Y 16 9
A_SKEW _M 17 8
nA_SKEW _M 18 7
B_SKEW _M 19 6
nB_SKEW _M 20 5
A_SKEW _C 21 4
nA_SKEW _C 22 3
B_SKEW _C 23 2
nB_SKEW _C 24 1
W TB/CST LOCK/FAN_LSU
CN38 W TB/CST
LOCK/FAN_LSU JC39-02337A
FAN_LSU 1 3
FB_OUT_ FAN_LSU 2 2
DGND 3 1
A_W TB 4 4
nA_W TB 5 3
nB_W TB 6 2
B_W TB 7 1
DGND 8 3 1 COM
COVER_OPEN_FRONT 9 2 2 N.O.
nCOVER_OPEN_FRONT 10 1 3 N.C.
DGND 11 4 1 4
ADC_W TB_FULL 12 3 2 3
EN_W TB_LED 13 2 3 2
5V_PS 14 1 4 1
R_5V_PS 15 3
DGND 16 2
nDETECT_W TB 17 1
OUT_DC_CST_LOCK1_2 18 10 1 2 1
R_5V_PS 20 8 3 3
DGND 21 7 4 2
nSENSE_CST_LOCK1 22 6 5 1
JC39-02186A
R_5V_PS 25 3 8 3
DGND 26 2 9 2
nSENSE_CST_LOCK2 27 1 10 1
NC 28
LSU PD /RESERVOIR SENSOR

-1.5m m /22*1P
CN26 LSU P M OTOR JC39-02231A

5V_LSU 1
5V_LSU 2
DGND 3
24V2 4
DGND 5
nSTART_LSU_M OT 6
nREADY_LSU 7
CLK_LSU_M OT 8

5.6. Connection Diagram (HVPS_SMPS_FDB)
M ono Only
HVPS(MONO)
HVPS
HEATER SW ITCH
M AIN SW ITCH
24FFC
CN31 HVPS
nDETECT_HVPS 1 1 nDETECT_HVPS
24V2_SW 2 2 24V
24V2_SW 3 3 24V
ADC_HVPS_24V 4 4 ADC_HVPS_24V
24V2_SW 5 5 24V
GND 6 6 GND
GND 7 7 GND
3.3V 8 8 3.3V
GND 9 9 GND
NC 10 10 NC
JC39-02197A
AC ADC_READ_M HV
PW M _THV+_CV_hybrid
11
12
11
12
ADC_READ_M HV
PW M _THV+_CV_hybrid
JC39-02203A
PW M _M HV 13 13 PW M _M HV
PW M _THV+_CV_SELECT_hybrid 14 14 PW M _THV+_CV_SELECT_hybrid
9
3
C
J
1
2
0
-
A
7
ToFUSER
PW M _SAW 15 15 PW M _SAW
ADC_READ_THV 16 16 ADC_READ_THV
INLET
PW M _THV_N 17 17 PW M _THV_N
nEN_DEVE 18 18 nEN_DEVE
PW M _FUSER_BIAS 19 19 PW M _FUSER_BIAS
PW M _DEVE_DC 20 20 PW M _DEVE_DC
GND
PW M _THV_P 21 21 PW M _THV_P
JC39-02199A
PW M _DEVE_VPP 22 22 PW M _DEVE_VPP
PW M _DEVE_AC 23 23 PW M _DEVE_AC
GND 24 24 GND
JC39-02248A
4
3
2
1
HEATER SW ITCH
4
3
2
1
2
1
3
2
1
M AIN SW ITCH
1
LIVE
LIVE
NEUTRAL
NEUTRAL
CN10
LIVE
LIVE
NEUTRAL
NEUTRAL
CN5
NEUTRAL
LIVE
CN1
COM M ON
LAM P2
LAM P1
CN6
FUSER
INLET
DEVE HV M 2
JC39-02249A
To INPUT OPTION
THV M
JC39-02247A
SAW /M HV
CN2 1
1 LIVE
2 NEUTRAL 2
M ono :SM PS TYPE3R
Color SM
TYPE5 3
(OPTI
INPUT OPTION
CN7 (Blue)
1 LIVE CN3
JC39-02246A
2 NEUTRAL 1 LIVE
O N/SCAN)
: PS TYPE4
1
FDB
2 NEUTRAL FUSER HV M 2
TYPE3R TYPE3R
JC39-02193A
DCF
CON1 CN8(Red)
LIVE 1 1 LIVE CN4
NEUTRAL 2 2 NEUTRAL 1 LIVE
2 NEUTRAL JC39-02196A
9
3
C
J
1
2
0
-
A
6
JC39-02192A
ColorOnly
220V Only
HVPS
35FFC
HVPS(COLOR)
CN11
CN3 HVPS
ON_FUSER_CENTER 1
REACTOR
1
ON_FUSER_RELAY 5
ON_SM PS_RELAY 7
nDETECT_HVPS 1 1 nDETECT_HVPS
FUSER_ON
24VS
RELAY_ON
24V_ON/OFF
GND
CON4
+24V3
GND
+24V2
GND
+24V1
GND
+5V
CON3
ON_FUSER_SIDE 2
2
PW M _D_AC_FREQ 2 2 PW M _D_AC_FREQ
TYPE3R S
ZERO_CROSS 10
SM PS TYPE 3R
M AIN IF
PW M _D_AC_VPP_Y 3 3 PW M _D_AC_VPP_Y
AC_SENSE 9
ADC_R_M HV_K 4 4 ADC_R_M HV_K

+24VS2 6
+24VS1 4
PW M _D_DC_Y 5 5 PW M _D_DC_Y
GND 8
GND 3
CN9
IGNAL
CN12
NC 6 6 NC
1
PW M _DC_AC_VPP_M 7 7 PW M _DC_AC_VPP_M
2
5
4
3
2
1
7
6
5
4
3
2
1
PW M _THV+_CC_SEL 8 8 PW M _THV+_CC_SEL
PW M _D_DC_M 9 9 PW M _D_DC_M
JC27-00009A PW M _THV+CC_Hyb 10 10 PW M _THV+CC_Hyb
2
C
J
0
-
7
A
9 PW M _D_AC_VPP_C 11 11 PW M _D_AC_VPP_C
PW M _M HV_K 12 12 PW M _M HV_K
SM PS TYPE5 6*2P PW M _D_DC_C 13 13 PW M _D_DC_C
CN5 SM PS TYPE5 PW M _M HV_C 14 14 PW M _M HV_C
1 5V1 PW M _D_AC_VPP_K 15 15 PW M _D_AC_VPP_K
2 5V2 PW M _M HV_M 16 16 PW M _M HV_M
SM PS TYPE 5 PW M _D_DC_K 17 17 PW M _D_DC_K
TYPE5 3 24V1
4 24V2 PW M _M HV_Y 18 18 PW M _M HV_Y
CN3 JC39-02213A(C) 19 19 ADC_R_THV2
1 5 24V3 ADC_R_THV2
CN1 +24V1 1 9
3
C
J
2
0
-
(
A
4
) M)
M
JC39-02344A( 6 ADC_R_M HV_C 20 20 ADC_R_M HV_C
24V4 HV_OPC_Y
JC39-02225A
1 LIVE GND 2
7 DGND PW M _THV_2 21 21 PW M _THV_2
2 NEUTRAL +24V2 3
8 DGND ADC_R_M HV_M 22 22 ADC_R_M HV_M HV_OPC_M
GND 4 23 23 PW M _THV2_CLEAN
9 DGND PW M _THV2_CLEAN
+24V3 5 ADC_R_M HV_Y 24 24 ADC_R_M HV_Y
10 DGND HV_OPC_C
GND 6 25 25 PW M _SAW
11 DGND PW M _SAW
+24V4 7 ADC_R_ITHV_Y 26 26 ADC_R_ITHV_Y
(M ain SYSTEM )
12 DGND HV_OPC_K
GND 8 PW M _FUSER_BIAS
SM PS TYPE5
PW M _FUSER_BIAS 27 27
SM PS TYPE3 4*2P ADC_R_ITHV_M 28 28 ADC_R_ITHV_M
ADC_R_IHTV_K 29 29 ADC_R_IHTV_K
TYPE5SIGNAL CN6 SM PS TYPE4
PW M _ITHV_Y 30 30 PW M _ITHV_Y
/ TYPE3R
JC39-02212A(C) 8 ADC_R_IHTV_C 31 31 ADC_R_IHTV_C
JC39-02223A
CN4 1 5V_OPT HV_DEVE_Y
GND 1 1
3
C
J
2
0
-
9
A
4
) M)
M
(
JC39-02343A( 7 2 24V5 PW M _ITHV_M 32 32 PW M _ITHV_M
+24V_ON/OFF 2 6 3 PW M _ITHV_K 33 33 PW M _ITHV_K
24V6 HV_DEVE_M
GND 3 5 4 PW M _ITHV_C 34 34 PW M _ITHV_C
24V7
4 5 GND 35 35 GND
DGND HV_DEVE_C
3 6 DGND
SM PS TYPE 5 2 7 DGND
1 HV_DEVE_K
8 DGND
CN2
+5V1 1 JC39-02226A
GND 2
HV_T1_Y 1
+5V2 3 AC CTRL./FDB /PAPER 2
GND 4
DET 1.5m m /17*2P HV_T1_M 3
JC39-02221A(C) CN39 AC CTRL./ 4
1
J
-
9
3
C
2
0
M
(
A
) M)
JC39-02233A( FDB / PAPER DET HV_T1_C 5
JC39-02196A
9
3
C
J
1
2
0
-
A
6 6
17 1 ZEROCROSS
10 1 HV_T1_K 7
16 2 AC_SENS
9 2
15 3 DGND
8 3
14 4 ON_SM PS_RREAY
7 4
JC39-02227A
13 5 24V3
6 5
12 6 ON_FUSER_RELAY T2 HV
5 6
11 7 24VS_FUSER
4 7
10 8 DGND
3 8
9 9 ON_FUSER_SIDE
2 9
8 10 ON_FUSER_CENTER
1 10 1
3
2 11 11 EN_24V_ENGINE 2
7
JC39-02224A
1 12 6 12 DGND HV_SAW
3
5
4
3
2 13 5 13 EN_24V_OPTION
1 14 4 14 DGND
3 15 15 FAN_SM PS
SM PS
3
FAN
2 16 2 16 FB_OUT_FAN_SM PS
1 17 1 17 DGND
18 nDETECT_CST1
PAPER SIZE1 PAPER SIZE2
4
3 19 DGND
2 20 ADC_P_SIZE1
1 21 DGND
4 22 nDETECT_CST2
3 23 DGND
2 24 ADC_P_SIZE2
1 25 1.8V_PS
DEVE / OPC
3 26 FAN_DEVE
27 FB_OUT_FAN_DEVE
FAN
2
1 28 DGND
4 29 ADC_OUT_TEM P
3 30 DGND
2 31 ADC_OUT_HUM I
1 32 3.3V_PS
OU T TEM P
/HUM ID
33 NC
34 NC

This chapter contains the tools list, list of abbreviations used in this manual, and a guide to the location space required when
installing the printer. A definition of test pages and Wireless Network information definition is also included.
6.1. Tools for Troubleshooting
The following tools are recommended safe and easy troubleshooting as described in this service manual.
Tool Image Use Remark

Hand DVM Checking the fuser lamp. Service
Checking the SMPS fuse.
Spring hook When disassembling the spring Service

Small vacuum To remove the toner and contamination Service
inside of the machine.
Driver To tighten screws. Service

To remove the hinge of the cover.
Tweezers To unplug the pin connector of the fuser Service

unit.
To remove the E-ring.
Soft cloth To clean the rollers Service
To clean the frame and scan glass
Black soft cloth To cover the OPC drum Service
Install guide, User guide, When installing the machine. Installation

Admin guide
Software CD When installing the machine. Installation

Tool Image Use Remark

Test Chart To check the image quality Service
• A4 image, A3 image,
Skew
Spare Kit To fix the unit or parts Service

• Screw, E-Ring
Clamp To form the harness Service
Grease To remove the noise by gear. Service

• G-8050 : JC81–08663A (200g)
• SPY272 : JC81–08664A (100g)

6.2. Glossary
The following glossary helps you get familiar with the product by understanding the terminologies commonly used with
printing as well as mentioned in this user’s guide and service manual.
802.11 is a set of standards for wireless local area network (WLAN) communication, developed by
802.11
the IEEE LAN/MAN Standards Committee (IEEE 802).
802.11b/g/n can share same hardware and use the 2.4 GHz band. 802.11b supports bandwidth up to 11
802.11b/g/n Mbps, 802.11n supports bandwidth up to 150 Mbps. 802.11b/g/n devices may occasionally suffer
interference from microwave ovens, cordless telephones, and Bluetooth devices.
Access Point or Wireless Access Point (AP or WAP) is a device that connects wireless communication
Access point devices together on wireless local area networks (WLAN), and acts as a central transmitter and
receiver of WLAN radio signals.
An Automatic Document Feeder (ADF) is a scanning unit that will automatically feed an original
ADF
sheet of paper so that the machine can scan some amount of the paper at once.
AppleTalk is a proprietary suite of protocols developed by Apple, Inc for computer networking. It
AppleTalk was included in the original Macintosh (1984) and is now deprecated by Apple in favor of TCP/IP
networking.
A computer graphics term describing the number of bits used to represent the color of a single pixel in
a bitmapped image. Higher color depth gives a broader range of distinct colors. As the number of bits
BIT Depth
increases, the number of possible colors becomes impractically large for a color map. 1-bit color is
commonly called as monochrome or black and white.
A bitmapped graphics format used internally by the Microsoft Windows graphics subsystem (GDI),
BMP
and used commonly as a simple graphics file format on that platform.
Bootstrap Protocol. A network protocol used by a network client to obtain its IP address automatically.
This is usually done in the bootstrap process of computers or operating systems running on them. The
BOOTP
BOOTP servers assign the IP address from a pool of addresses to each client. BOOTP enables 'diskless
workstation' computers to obtain an IP address prior to loading any advanced operating system.
Charge Coupled Device (CCD) is a hardware which enables the scan job. CCD Locking mechanism is
CCD
also used to hold the CCD module to prevent any damage when you move the machine.
Collation is a process of printing a multiple-copy job in sets. When collation is selected, the device
Collation
prints an entire set before printing additional copies.
A control panel is a flat, typically vertical, area where control or monitoring instruments are displayed.
Control Panel
They are typically found in front of the machine.
It is the printing term used for a toner usage measurement on printing. For example, 5% coverage
means that an A4 sided paper has about 5% image or text on it. So, if the paper or original has
Coverage
complicated images or lots of text on it, the coverage will be higher and at the same time, a toner
usage will be as much as the coverage.
Comma Separated Values (CSV). A type of file format, CSV is used to exchange data between
CSV disparate applications. The file format, as it is used in Microsoft Excel, has become a de facto standard
throughout the industry, even among non-Microsoft platforms.
A Duplex Automatic Document Feeder (DADF) is a scanning unit that will automatically feed and
DADF
turn over an original sheet of paper so that the machine can scan on both sides of the paper.
Default The value or setting that is in effect when taking a printer out of its box state, reset, or initialized.
A Dynamic Host Configuration Protocol (DHCP) is a client-server networking protocol. A DHCP
server provides configuration parameters specific to the DHCP client host requesting, generally,
DHCP
information required by the client host to participate on an IP network. DHCP also provides a
mechanism for allocation of IP addresses to client hosts.
Dual Inline Memory Module (DIMM), a small circuit board that holds memory. DIMM stores all
DIMM
the data within the machine like printing data, received fax data.

The Digital Living Network Alliance (DLNA) is a standard that allows devices on a home network to
DLNA
share information with each other across the network.
The Domain Name Server (DNS) is a system that stores information associated with domain names in
DNS
a distributed database on networks, such as the Internet.
A dot matrix printer refers to a type of computer printer with a print head that runs back and forth
Dot Matrix Printer on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like a
typewriter.
Dots Per Inch (DPI) is a measurement of resolution that is used for scanning and printing. Generally,
DPI
higher DPI results in a higher resolution, more visible detail in the image, and a larger file size.
Distinctive Ring Pattern Detection. Distinctive Ring is a telephone company service which enables a
DRPD
user to use a single telephone line to answer several different telephone numbers.
A mechanism that will automatically turn over a sheet of paper so that the machine can print (or
Duplex scan) on both sides of the paper. A printer equipped with a Duplex Unit can print on both sides of
paper during one print cycle.
Duty cycle is the page quantity which does not affect printer performance for a month. Generally the
printer has the lifespan limitation such as pages per year. The lifespan means the average capacity
Duty Cycle
of print-outs, usually within the warranty period. For example, if the duty cycle is 48,000 pages per
month assuming 20 working days, a printer limits 2,400 pages a day.
Error Correction Mode (ECM) is an optional transmission mode built into Class 1 fax machines
ECM or fax modems. It automatically detects and corrects errors in the fax transmission process that
are sometimes caused by telephone line noise.
Emulation is a technique of one machine obtaining the same results as another. An emulator
duplicates the functions of one system with a different system, so that the second system behaves like
Emulation the first system. Emulation focuses on exact reproduction of external behavior, which is in contrast
to simulation, which concerns an abstract model of the system being simulated, often considering
its internal state.
Ethernet is a frame-based computer networking technology for local area networks (LANs). It defines
wiring and signaling for the physical layer, and frame formats and protocols for the media access
Ethernet
control (MAC)/data link layer of the OSI model. Ethernet is mostly standardized as IEEE 802.3. It
has become the most widespread LAN technology in use during the 1990s to the present.
A suite of protocols developed by Apple Computer for computer networking. It was included in the
EtherTalk
original Macintosh (1984) and is now deprecated by Apple in favor of TCP/IP networking.
Foreign Device Interface (FDI) is a card installed inside the machine to allow a third party device
FDI such as a coin operated device or a card reader. Those devices allow the pay-for-print service
on your machine.
A File Transfer Protocol (FTP) is a commonly used protocol for exchanging files over any network
FTP
that supports the TCP/IP protocol (such as the Internet or an intranet).
The part of a laser printer that fuses the toner onto the print media. It consists of a heat roller and
a pressure roller. After toner is transferred onto the paper, the fuser unit applies heat and pressure
Fuser Unit
to ensure that the toner stays on the paper permanently, which is why paper is warm when it comes
out of a laser printer.
A connection between computer networks, or between a computer network and a telephone line. It is
Gateway
very popular, as it is a computer or a network that allows access to another computer or network.
A shades of gray that represent light and dark portions of an image when color images are converted
Grayscale
to grayscale; colors are represented by various shades of gray.
An image type that simulates grayscale by varying the number of dots. Highly colored areas consist of
Halftone
a large number of dots, while lighter areas consist of a smaller number of dots.
Hard Disk Drive (HDD), commonly referred to as a hard drive or hard disk, is a non-volatile storage
HDD
device which stores digitally-encoded data on rapidly rotating platters with magnetic surfaces.

The Institute of Electrical and Electronics Engineers (IEEE) is an international non-profit, professional
IEEE
organization for the advancement of technology related to electricity.
The 1284 parallel port standard was developed by the Institute of Electrical and Electronics Engineers
IEEE 1284 (IEEE). The term "1284-B" refers to a specific connector type on the end of the parallel cable that
attaches to the peripheral (for example, a printer).
A private network that uses Internet Protocols, network connectivity, and possibly the public
Intranet telecommunication system to securely share part of an organization's information or operations with
its employees. Sometimes the term refers only to the most visible service, the internal website.
An Internet Protocol (IP) address is a unique number that devices use in order to identify and
IP address
communicate with each other on a network utilizing the Internet Protocol standard.
The Images Per Minute (IPM) is a way of measuring the speed of a printer. An IPM rate indicates the
IPM
number of single-sided sheets a printer can complete within one minute.
The Internet Printing Protocol (IPP) defines a standard protocol for printing as well as managing print
jobs, media size, resolution, and so forth. IPP can be used locally or over the Internet to hundreds
IPP
of printers, and also supports access control, authentication, and encryption, making it a much more
capable and secure printing solution than older ones.
IPX/SPX stands for Internet Packet Exchange/Sequenced Packet Exchange. It is a networking
protocol used by the Novell NetWare operating systems. IPX and SPX both provide connection
IPX/SPX services similar to TCP/IP, with the IPX protocol having similarities to IP, and SPX having similarities
to TCP. IPX/SPX was primarily designed for local area networks (LANs), and is a very efficient
protocol for this purpose (typically its performance exceeds that of TCP/IP on a LAN).
The International Organization for Standardization (ISO) is an international standard-setting body
ISO composed of representatives from national standards bodies. It produces world-wide industrial and
commercial standards.
The International Telecommunication Union is an international organization established to standardize
and regulate international radio and telecommunications. Its main tasks include standardization,
ITU-T
allocation of the radio spectrum, and organizing interconnection arrangements between different
countries to allow international phone calls. A -T out of ITU-T indicates telecommunication.
ITU-T No. 1 chart Standardized test chart published by ITU-T for document facsimile transmissions.
Joint Bi-level Image Experts Group (JBIG) is an image compression standard with no loss of accuracy
JBIG or quality, which was designed for compression of binary images, particularly for faxes, but can
also be used on other images.
Joint Photographic Experts Group (JPEG) is a most commonly used standard method of lossy
JPEG compression for photographic images. It is the format used for storing and transmitting photographs
on the World Wide Web.
The Lightweight Directory Access Protocol (LDAP) is a networking protocol for querying and
LDAP
modifying directory services running over TCP/IP.
LED A Light-Emitting Diode (LED) is a semiconductor device that indicates the status of a machine.
Media Access Control (MAC) address is a unique identifier associated with a network adapter. MAC
address is a unique 48-bit identifier usually written as 12 hexadecimal characters grouped in pairs (e.
MAC address
g., 00-00-0c-34-11-4e). This address is usually hard-coded into a Network Interface Card (NIC) by its
manufacturer, and used as an aid for routers trying to locate machines on large networks.
Multi Function Peripheral (MFP) is an office machine that includes the following functionality in one
MFP
physical body, so as to have a printer, a copier, a fax, a scanner and etc.
Modified Huffman (MH) is a compression method for decreasing the amount of data that needs to be
transmitted between the fax machines to transfer the image recommended by ITU-T T.4. MH is a
MH
codebook-based run-length encoding scheme optimized to efficiently compress white space. As most
faxes consist mostly of white space, this minimizes the transmission time of most faxes.
MMR Modified Modified READ (MMR) is a compression method recommended by ITU-T T.6.

A device that modulates a carrier signal to encode digital information, and also demodulates such a
Modem
carrier signal to decode transmitted information.
Modified Read (MR) is a compression method recommended by ITUT T.4. MR encodes the first
MR scanned line using MH. The next line is compared to the first, the differences determined, and then the
differences are encoded and transmitted.
A network operating system developed by Novell, Inc. It initially used cooperative multitasking to
NetWare run various services on a PC, and the network protocols were based on the archetypal Xerox XNS
stack. Today NetWare supports TCP/IP as well as IPX/SPX.
Organic Photo Conductor (OPC) is a mechanism that makes a virtual image for print using a laser
beam emitted from a laser printer, and it is usually green or rust colored and has a cylinder shape.
OPC An imaging unit containing a drum slowly wears the drum surface by its usage in the printer, and
it should be replaced appropriately since it gets worn from contact with the cartridge development
brush, cleaning mechanism, and paper.
The first example of something, such as a document, photograph or text, etc, which is copied,
Originals reproduced or translated to produce others, but which is not itself copied or derived from something
else.
Open Systems Interconnection (OSI) is a model developed by the International Organization for
Standardization (ISO) for communications. OSI offers a standard, modular approach to network
OSI design that divides the required set of complex functions into manageable, self-contained, functional
layers. The layers are, from top to bottom, Application, Presentation, Session, Transport, Network,
Data Link and Physical.
A private automatic branch exchange (PABX) is an automatic telephone switching system within a
PABX
private enterprise.
Printer Command Language (PCL) is a Page Description Language (PDL) developed by HP as a
PCL printer protocol and has become an industry standard. Originally developed for early inkjet printers,
PCL has been released in varying levels for thermal, dot matrix printer, and laser printers.
Portable Document Format (PDF) is a proprietary file format developed by Adobe Systems for
PDF
representing two dimensional documents in a device independent and resolution independent format.
PostScript (PS) is a page description language and programming language used primarily in the
PostScript(PS)
electronic and desktop publishing areas. - that is run in an interpreter to generate an image.
Printer Driver A program used to send commands and transfer data from the computer to the printer.
The media like paper, envelopes, labels, and transparencies which can be used in a printer, a scanner, a
Print Media
fax or, a copier.
Pages Per Minute (PPM) is a method of measurement for determining how fast a printer works,
PPM
meaning the number of pages a printer can produce in one minute.
An interface for a device driver, this allows software to interact with the device driver using standard
PRN file
input/output system calls, which simplifies many tasks.
A convention or standard that controls or enables the connection, communication, and data transfer
Protocol
between two computing endpoints.
The Public-Switched Telephone Network (PSTN) is the network of the world's public circuit-switched
PSTN
telephone networks which, on industrial premises, is usually routed through the switchboard.
Remote Authentication Dial In User Service (RADIUS) is a protocol for remote user authentication
and accounting. RADIUS enables centralized management of authentication data such as usernames
RADIUS
and passwords using an AAA (authentication, authorization, and accounting) concept to manage
network access.
The sharpness of an image, measured in Dots Per Inch (DPI). The higher the dpi, the greater the
Resolution
resolution.
Server Message Block (SMB) is a network protocol mainly applied to share files, printers, serial ports,
SMB and miscellaneous communications between nodes on a network. It also provides an authenticated
Interprocess communication mechanism.

Simple Mail Transfer Protocol (SMTP) is the standard for e-mail transmissions across the Internet.
SMTP is a relatively simple, text based protocol, where one or more recipients of a message are
SMTP
specified, and then the message text is transferred. It is a client server protocol, where the client
transmits an email message to the server.
Service Set Identifier (SSID) is a name of a wireless local area network (WLAN). All wireless devices
SSID in a WLAN use the same SSID in order to communicate with each other. The SSIDs are case-sensitive
and have a maximum length of 32 characters.
The subnet mask is used in conjunction with the network address to determine which part of the
Subnet Mask
address is the network address and which part is the host address.
The Transmission Control Protocol (TCP) and the Internet Protocol (IP); the set of communications
TCP/IP
protocols that implement the protocol stack on which the Internet and most commercial networks run.
Transmission Confirmation Report (TCR) provides details of each transmission such as job status,
TCR transmission result and number of pages sent. This report can be set to print after each job or only
after failed transmissions.
Tagged Image File Format (TIFF) is a variable-resolution bitmapped image format. TIFF describes
image data that typically come from scanners. TIFF images make use of tags, keywords defining the
TIFF
characteristics of the image that is included in the file. This flexible and platform-independent format
can be used for pictures that have been made by various image processing applications.
A kind of bottle or container used in a machine like a printer which contains toner. Toner is a powder
used in laser printers and photocopiers, which forms the text and images on the printed paper. Toner
Toner Cartridge
can be fused by a combination of heat/pressure from the fuser, causing it to bind to the fibers in
the paper.
An industry standard for scanners and software. By using a TWAINcompliant scanner with a
TWAIN TWAIN-compliant program, a scan can be initiated from within the program. It is an image capture
API for Microsoft Windows and Apple Macintosh operating systems.
Uniform Naming Convention (UNC) is a standard way to access network shares in Window NT and
UNC Path other Microsoft products. The format of a UNC path is: \\<servername>\<sharename>\<Additional
directory>
Uniform Resource Locator (URL) is the global address of documents and resources on the Internet.
URL The first part of the address indicates what protocol to use, the second part specifies the IP address or
the domain name where the resource is located.
Universal Serial Bus (USB) is a standard that was developed by the USB Implementers Forum, Inc., to
USB connect computers and peripherals. Unlike the parallel port, USB is designed to concurrently connect
a single computer USB port to multiple peripherals.
A watermark is a recognizable image or pattern in paper that appears lighter when viewed by
transmitted light. Watermarks were first introduced in Bologna, Italy in 1282; they have been used by
Watermark
papermakers to identify their product, and also on postage stamps, currency, and other government
documents to discourage counterfeiting.
Wired Equivalent Privacy (WEP) is a security protocol specified in IEEE 802.11 to provide the same
WEP level of security as that of a wired LAN. WEP provides security by encrypting data over radio so that
it is protected as it is transmitted from one end point to another.
Windows Imaging Architecture (WIA) is an imaging architecture that is originally introduced in
WIA Windows Me and Windows XP. A scan can be initiated from within these operating systems by
using a WIAcompliant scanner.
Wi-Fi Protected Access (WPA) is a class of systems to secure wireless (Wi-Fi) computer networks,
WPA
which was created to improve upon the security features of WEP.
WPA-PSK (WPA Pre-Shared Key) is special mode of WPA for small business or home users. A
shared key, or password, is configured in the wireless access point (WAP) and any wireless laptop or
WPA-PSK
desktop devices. WPA-PSK generates a unique key for each session between a wireless client and the
associated WAP for more advanced security.

The Wi-Fi Protected Setup (WPS) is a standard for establishing a wireless home network. If your
WPS wireless access point supports WPS, you can configure the wireless network connection easily
without a computer.
XML Paper Specification (XPS) is a specification for a Page Description Language (PDL) and a new
document format, which has benefits for portable document and electronic document, developed
XPS
by Microsoft. It is an XML-based specification, based on a new print path and a vector-based
device-independent document format.

6.3. Model Name and Code
1) Sub brand name Information

- Applying Independent sub brand name by Segment : Xpress / ProXpress / MultiXpress
2) Model code Information
• Basic Structure : [SL-●○○■□◆◆]
• ◆◆ : Function Information
Function
N Network
W Wireless Network
D Duplex Printing
R Reverse Type ADF

F Fax
X XOA (eXtensible Open Architecture)
H Handset
A Auto Document Feeder

6.4. Document Revision List
Version Date Page Description

1.00 16/Jan/2015 - Release
1.01 24/Apr/2015 P.4–193 Add the Setting Standard Tone description.
1.02 09/Jun/2015 P.2–97 Add SMPS information for GX model.
P.3–23
1.03 02/Jul/2015 P.2–17 Change Fuser life.(300K → 360K)
1.04 29/Jul/2015 P.4–55 Add explanation for Auto Skew Correction during job box in ADF
manual adjustment.
1.05 10/Aug/2015 P.2–20 Modify option table.
1.06 21/Aug/2015 P.4–69~ Add URL information for error code troubleshooting video.
1.07 02/Sep/2015 P.3–7 Update the deve unit replacement.
1.08 23/Oct/2015 P.2–114 Modify OPE Unit description.
1.09 21/Jan/2016 P.4–198 Add tech tips in other error sections.
1.10 03/Jan/2017 P.2–17 Rectify PTB code in maintenance parts table.
P.4–78 Add A3–2113 error code.
1.11 08/Jun/2017 P.4–220~ Add adjustment for platen unit.
1.12 24/Aug/2017 P.2–17 Update the maintenance parts table.

GSPN (GLOBAL SERVICE PARTNER NETWORK)
Area Web Site
Europe, MENA,
https://gspn1.samsungcsportal.com
CIS, Africa
E.Asia, W.Asia,
https://gspn2.samsungcsportal.com
China, Japan
N.America, S.America https://gspn3.samsungcsportal.com
This Service Manual is a property of Samsung Electronics

© 2017 Samsung Electronics Co.,Ltd.
Co.,Ltd.
All rights reserved.
Any unauthorized use of Manual can be punished under
Printed in Korea
applicable International and/or domestic law.
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A3 Mono Copier

2. Product Specifications and Description

3. Disassembly and Reassembly

i Copyright© 1995-2017 SAMSUNG. All rights reserved.

2.5.4.1. PTB unit overview ........................................................................................ 2 − 44

Copyright© 1995-2017 SAMSUNG. All rights reserved. ii

2.11.3.5. DSDF Original Exit Assembly......................................................................... 2 − 89

iii Copyright© 1995-2017 SAMSUNG. All rights reserved.

3.2.2.5. MP Pick Up_Reverse_Forward roller ................................................................ 3 − 12

Copyright© 1995-2017 SAMSUNG. All rights reserved. iv

3.3.29.3. MP Unit ...................................................................................................... 3 − 47

v Copyright© 1995-2017 SAMSUNG. All rights reserved.

3.3.39.5. HCF Shaft Motor .......................................................................................... 3 − 87

Copyright© 1995-2017 SAMSUNG. All rights reserved. vi

4.5.5.5. Image Management ...................................................................................... 4 − 57

vii Copyright© 1995-2017 SAMSUNG. All rights reserved.

4.6.18. Sx–xxxx (System error) .............................................................................................. 4 − 142

Copyright© 1995-2017 SAMSUNG. All rights reserved. viii

4.10.2.1. Error Mode ................................................................................................ 4 − 235

ix Copyright© 1995-2017 SAMSUNG. All rights reserved.

1.1. Safety warning

1) Only to be serviced by a factory trained service technician.

2) Use only Samsung replacement parts.

3) Laser Safety Statement

• Maximum power of energy output: 17 mW

4) Lithium battery not replaceable by user

Copyright© 1995-2017 SAMSUNG. All rights reserved. 1-1

1.2. Caution for safety

1.2.1. Toxic material

1.2.2. Electric shock and fire safety precautions

1-2 Copyright© 1995-2017 SAMSUNG. All rights reserved.

Copyright© 1995-2017 SAMSUNG. All rights reserved. 1-3

1.2.3. Handling precautions

1.2.4. Assembly and Disassembly precautions

3) Disconnect interface cables and power cables.

7) Handling of the OPC Drum

1-4 Copyright© 1995-2017 SAMSUNG. All rights reserved.

1.2.5. Disregarding this warning may cause bodily injury

1) Be careful with the high temperature part.

2) Do not put fingers or hair into the rotating parts.

4) Ensure the printer is installed safely.

Copyright© 1995-2017 SAMSUNG. All rights reserved. 1-5

1.3. ESD precautions

3) Use only a grounded tip soldering iron to solder or desolder ESDs.

1-6 Copyright© 1995-2017 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.1. Product Overview

Copyright© 1995-2017 SAMSUNG. All rights reserved. 2-1

Product Specifications are subject to change without notice.

2.2.1. General Specification

2-2 Copyright© 1995-2017 SAMSUNG. All rights reserved.

Acoustic Noise Copying mode • Simplex

Copyright© 1995-2017 SAMSUNG. All rights reserved. 2-3

2.2.2. Print Specifications

2-4 Copyright© 1995-2017 SAMSUNG. All rights reserved.

Copyright© 1995-2017 SAMSUNG. All rights reserved. 2-5

2.2.3. Scan specification

2-6 Copyright© 1995-2017 SAMSUNG. All rights reserved.

2.2.4. Copy specification

SDMC (Single • K7600 series : Up to 60 cpm in A4