BenQ G700 Service Manual
BenQ G700 Service Manual
BenQ G700 Service Manual
Service Manual
Version: 001 Date:07/06/12 Notice: - For RO to input specific Legal Requirement in specific NS regarding to responsibility and liability statements. - Please check BenQs eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (June, 2006) Copyright BenQ Corporation 2006. All Right Reserved.
BenQ G700
Content Index
Service Manual
1. Precautions & Safety Notices.....................................................................................................................4 1.1 .Safety Precaution4 1.2 Produce Safety Notice 4 1.3 Service Notes4 2. Product Overview 4 2.1. Power supply4 2.2 Signal interface. 5 2.3 Video performance.5 2.4 Scan range..6 2.5 Plug & Play DDC2B DDC-CI Support 6 2.6 Support Timings. 7 2.7 Operational &Function Specification.. 8 2.7.1 Video performance.... 8 2.7.2 Brightness Adjustable Range 9 2.7.3 Acoustical Noise.. 9 2.7.4 Environment. 9 2.7.5 Transportation.. 9 2.7.6 Electrostatic Discharge Requirements 10 2.7.7 Reliability. 10 2.7.8 Audio performance. 10 2.8 LCD Characteristics.. 10 2.8.1 The Physical definition & Technology summary of LCD panel 10 2.9 User Controls. 11 2.10 Mechanical Characteristics 11 2.10.1 Dimension. 11 2.10.2 Weight 11 2.10.3 Plastic 11 2.10.4 Carton 12 2.11 Pallet & Shipment 12 2.11.1 Container Specification 12 2.11.2 Carton Specification Product: /Package.. 13 3. Disassembly & Assembly.. 14 3.1 Exploded Diagram. 14 3.2 Assembly Block.. 15 3.3 Disassembly Block 18 4. Level 1 Cosmetic / Appearance / Alignment Service 20
BenQ G700
Content Index
Service Manual
4.1 Software / Firmware Upgrade Process..20 4.2. Alignment procedure (for function adjustment).. 21 4.2.1 Preparation. 21 4.2.2 Timing adjustment. 21 4.2.3 Function key Definitions 21 4.2.3.1 Control buttons on the Back bezel21 4.2.3.2 OSD Control 22 4.2.3.3 Factory Mode Introduction 23 4.2.3.4. After repair, to ensure the quality you should do the following test and adjustment. 23 5. Level 2 Circuit Board and Standard Parts Replacement.. 25 5.1. Block diagram.. 25 5.2 Circuit operation theory.. 28 5.2.1. Electronic Circuit Theory.. 28 5.2.2 Power board diagram 30 5.3 Inverter board diagram. 31 5.3.1 I/F Circuit . 31 5.3.2 Trouble Shooting Guide 33 5.4 Spare Parts List. 40
BenQ G700
1. Precautions & Safety Notices 1.1 Safety Precaution
Service Manual
This monitor is manufactured and tested on a ground principle that a users safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user. WARNINGS: This monitor should be operated only at the correct power sources indicated on the label on the rear of the monitor. If youre unsure of the power supply in you residence, consult your local dealer or Power Company. Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. This monitor should only be repaired by a qualified technician. Do not remove the monitor cabinet. There is high-voltage parts inside that may cause electric shock to human bodies. Stop using the monitor if the cabinet is damaged. Have it checked by a service technician. Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable immediately and consult your closed dealer. Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply non-ammonia based cleaner onto the cloth, not directly onto the class screen. Do not place heavy objects on the monitor or power cord.
1.2 PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety visual inspections and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Before replacing any of these components read the parts list in this manual carefully. The use of substitute replacement parts, which do not have the same safety characteristics as specified in the parts list, may create shock, fire, or other hazards. 1.3 SERVICE NOTES When replacing parts or circuit boards, clamp the lead wires around terminals before Keep wires away from high voltage, high temperature components and sharp edges. Keep wires in their original position so as to reduce interference. Adjustment of this product please refers to the user manual. soldering.
2. Product Overview
2.1 Power supply
Item Input Voltage range Input Current range condition Universal input full range 100Vac 240Vac Spec 100~240V AC 1.5A (max.) 0.6A (max.) Power consumption DMPS In rush Current 100Vac,cold star,25C; normal on operation OK NA Remark
38W
<2W 40A (max)
BenQ G700
240Vac,cold star,25C Earth Leakage Current Hi-pot Power Line Transient 60A(max)
Service Manual
Pin 1 2 3 4 5
Pin 6 7 8 9 10
Pin 11 12 13 14 15
BenQ G700
2.4 Scan range Item condition Spec OK NA Remark
Service Manual
Horizontal
31.0~83KHz
Vertical
56~76Hz
BenQ G700
Service Manual
Preset 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
Pixel Format 640x350 640x400 640x480 640x480 640x480 640x480 720x400 832x624 800x600 800x600 800x600 800x600 848x480 848x480 848x480 848x480 848x480 720x576 1024x768 1024x768 1024x768 1024x768 1024x768 1152x720 1152x864 1152x864 1152x870 1152x900 1152x900 1280x720 1280x720 1280x720 1280x768-R 1280x768
Horz Freq(kHz) 31.47 31.47 35.00 31.47 37.86 37.50 31.47 49.71 35.16 37.88 48.08 46.88 31.02 29.83 35.00 36.07 37.68 35.83 48.36 56.48 57.67 60.24 60.02 44.86 63.85 67.50 68.68 61.80 71.73 45.00 44.77 56.46 47.40 47.78
Horz Polarity + + + + + + + + +
Vert Freq (Hz) 70.09 70.09 66.67 59.94 72.81 75.00 70.08 74.53 56.25 60.32 72.19 75.00 60.00 59.66 70.00 72.00 74.77 60.00 60.00 70.07 72.00 74.93 75.03 60 70.01 75.00 75.06 65.95 76.07 59.94 59.86 74.78 60.00 59.87
Vert Polarity + + + + + + + + + + +
Pixel Clk (MHz) 25.18 25.18 30.24 25.17 31.50 31.50 28.32 57.27 36.00 40.00 50.00 49.50 33.75 31.50 37.52 39.25 41.00 32.71 65.00 75.00 78.43 80.00 78.75 66.75 94..50 108.00 100.00 92.94 105.59 74.25 74.50 95.75 68.25 79.50
BenQ G700
Service Manual
Preset 35 36 37 38 39 40 41 42 43 44
Pixel Format 1280x768 1280x800 1280x800 1280x960 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024
Horz Freq(kHz) 60.29 61.648 62.8 60.00 63.98 74.88 74.40 77.90 79.98 81.18
Horz Polarity
Vert Freq (Hz) 74.89 59.81 75 60.00 60.02 69.85 70.00 72.00 75.02 76.16
Vert Polarity
Pixel Clk (MHz) 102.25 83.50 106.5 108.00 108.00 126.99 124.90 134.60 135.00 135.09
2.7 Operational &Function Specification 2.7.1 Video Performance * All Spec. of monitor need to warm up at lease 1hr
Item Resolution condition Any input resolution modes which are list in the timing table (under 1280x1024). Contrast ratio Brightness Response time Viewing angle CR>10 CR>10 CIE coordinate of white 700:1 300 cd/m2 (Typ.) Spec Max. resolution 1280x1024 OK NA Remark
5ms(typ.)
160 160
Display colors
16.7M (6bit+Hi-FRC)
BenQ G700
2.7.2 Brightness Adjustable Range
Item Brightness adjustable range condition At default contrast level (saturate point)& Full-white color pattern Spec 100 cd/m2 (Setting brightness max. value 100%; Min. brightness value) OK NA Remark
Service Manual
2.7.4 Environment
Item Temperature condition Operating Non-operating Humidity Operating Non-operating Altitude Operating Non-operating Spec 0C to 40C -20C to 60C 20% to 80% 10% to 80% 0 to 3048 M (10000 ft) 0 to 12192M (40000 ft) OK NA Remark
2.7.5 Transportation
Item Vibration condition Spec OK NA Remark
Package, Non-operating
1. Sweep frequency :5~200Hz 2. Amplitude: 1.47 Grms 3. Duration Time: 20 minute each axistotal is 60 Min :4. Direction: 3 mutually perpendicular axes (x, y, z) 5. Fix direction : Only fix top&buttom
Unpackage , Non-operating
Package, Non-operating
shock
BenQ G700
2.7.6 Electrostatic discharge Requirements
Item Electrostatic discharge condition IEC61000-4-2(EN 55024) Spec OK NA
Service Manual
Remark
2.7.7 Reliability
Items Condition Spec Note
50,000 Hours
40,000 Hours(min)
Note. Display an all WHITE field at mid Brightness and Contrast settings 2.7.8 Audio performance
Items
Speaker Input impedance Frequency response range Signal to noise ratio Output power NA NA NA NA NA
Specification
2.8. LCD Characteristics 2.8.1 The physical definition &technology summary of LCD panel
Item LCD panel supplier Panel type of supplier condition Spec OK NA Remark
Screen diagonal Display area Pixel pitch Pixel arrangement Display mode Support color
10
BenQ G700
2.9 User Controls Users hardware control definition:
Item Monitor power button Enter button Right/Inc.button Left/Dec. button I-key button Mode selection button Input Select key Mute button Input source select button condition Spec OK NA Remark
Service Manual
condition
OK
NA
2.10.3 Plastic
Item condition Spec OK NA Remark
11
BenQ G700
Texture MT11000&MT11010&MT11 020& & polishing2000& polishing3000& polishing6000 Special Texture
Service Manual
1.BEZEL: MT11000 & MT11010& polishing2000 2.BACK COVER: MT11000 & MT11020& polishing2000 3.STAND: MT11010& polishing2000 4.POWER KEY BUTTON: polishing2000 5.LED: polishing6000 Others:MT11020 Bezel painting
Color
BCS-7015A(BLACK)/BCST8110C(SILVER)
2.10.4 Carton Carton:Item Color Material Compression strength Burst strrngth Stacked quantity condition Spec Kraft C Flute 440 KGF 15 KGF/cm2 7 Layers OK NA Remark
20 With Pallet
1140
40
2414
20
N/A
N/A 12
N/A
BenQ G700
Without Pallet 40 N/A N/A N/A
Service Manual
4.70.3Kg
370x365.9x93.7mm
370x371.35x137.91mm
Dimension (mm)
440x434x120mm
13
BenQ G700
3. Disassembly & Assembly 3.1 Exploded Diagram
Service Manual
14
BenQ G700
3.2 Assembly Block
PCBA I/F BOARD *1 SCREW,P,CROSS W/WAS,M3*6,Zn ROHS *1
Service Manual
*1
*! *1
15
BenQ G700
Service Manual
Keypad assembly
16
BenQ G700
Service Manual
Lock screw
10
Base assembly
17
BenQ G700
3.3 Disassembly Block
Service Manual
ASSY STAND
SCREW,B,CROSS,T.T-4*10,BLK ,ROHS *2
ASSY,BACK COVER
*1
*! *1
SCREW,P,CROSS,M4*8,BLACK,N L(NYLOK*2
18
BenQ G700
Service Manual
19
BenQ G700
Service Manual
4 Level 1 Cosmetic / Appearance / Alignment Service 4.1 Software / Firmware Upgrade Process Upload firmware to MCU via VGA Cable 1. Connect ISP board between monitor and PC as below configuration.
LCD Monitor
ISP Board
Insert to Parallel Parallel Port on PC Port
D-Sub
D-SUB
2. Press the connect button in ISP.exe, and select the device type, which is used in this monitor. Choose the 20
BenQ G700
corresponding firmware version, and load to MCU. 3. After finish, please plug out power cable and re-start monitor again.
Service Manual
4.2 Alignment procedure (for function adjustment) 4.2.1 Preparation: 1. Setup input timing VESA to 1280*1024@60Hz,32-Grays pattern. 2. Setup units and keep it warm up for at least 30 minutes. 4.2.2 Timing adjustment 1. Enter to factory mode setting area (by pressing ENTER+ MENU + POWER at the same time during power off). 2. Check the settings to following values: Contrast =50; Brightness=100; Color enhancement=general; 3. Then turn off the monitor power. 4.2.3 Function key Definitions 4.2.3.1 Control buttons on the Back bezel UP
Activate the Brightness/Contrast Control menu View the next function in the OSD Main menu Increase the value of the specific function which has been selected Activate the Control Button Description menu Activate the OSD Main menu View the next function in the OSD Main menu Activate the Theme Mode menu View the previous function in the OSD Main menu Decrease the value of the specific function which has been selected Activate the Auto Adjustment function Go back to the OSD Main menu from the sub-menus Exit from the OSD Main menu Perform function of menu icon that is highlight or enter next level menu Enter the OSD item
MENU
DOWN
AUTO
ENTER
21
BenQ G700