Troubleshooting

4. Troubleshooting
4-1 Troubleshooting
4-1-1 First Checklist for Troubleshooting

1. Check the various cable connections first.

- Check to see if there is a burnt or damaged cable.
- Check to see if there is a disconnected or loose cable connection.
- Check to see if the cables are connected according to the connection diagram.

2. Check the power input to the Main Board.

3. Check the voltage in and out between the SMPS ↔ Main Board, between the SMPS ↔ X, Y Main Board, and between the
Logic Boards.

Samsung Electronics 4-1

Troubleshooting

4-1-2 Checkpoints by Error Mode

■ No Power
- The LEDs on the front panel do not work when connecting the power cord.
Symptom - The SMPS relay does not work when connecting the power cord.
- The unit appears to be dead.
The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if the cables
are improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
- Check the internal cable connection.
Major Checklist
- Check the fuses.
- Check the output voltage of the SMPS.
- Replace the Main Board.

Troubleshooting
Procedures

Is the AC IN socket connector and No The AC IN socket connector and

① the Main SMPS CN800 connected? the Main SMPS CN800 connected
Yes

Is the Fuse (F801S) of the Main Yes

① SMPS Power Input Part blown?
Replace Fuse (F801S)

Yes

CN801 No
② Check the STD5V vOLTAGE
Check PS_ON voltage if it is 0V
Replace the Main SMPS

Yes

Replace the Main Board

4-2 Samsung Electronics

 Troubleshooting

■ When the unit is repeatedly turning on and off

Symptom - The SMPS relay is repeatedly turning on and off.
In general, the SMPS relay repeatedly turns on and off by the protection function due to a defect on a board
connected to the SMPS.
- Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if
Major Checklist each voltage output is correct.
- If the symptom continues even when SMPS is operated alone, replace the SMPS.
- If the symptom is not observed when operating the SMPS alone, find any defective assemblies by connecting
the cables one by one.

Troubleshooting
Procedures

Does the symptom continue when No Replace the Y Main Board

connecting the power after removing
① CN810 from the SMPS?
Yes

Does the symptom continue when

② connecting the power after removing
No
Replace the X Main Board
CN809 from the SMPS?
Yes

Does the symptom continue when No

③ connecting the power after removing
CN807 from the SMPS?
Replace the Logic Board

Yes

Replace the SMPS

When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701
Caution of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the
high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.

Samsung Electronics 4-3

Troubleshooting

■ No Picture (When audio is normal)

Symptom - Audio is normal but no picture is displayed on the screen.
- This may happen when the Main Board is functioning but the X, Y Main Board, Logic Board, or Y Buffer
Boards are not.
Major Checklist
- The output voltage of the Main SMPS.
- This may happen when the LVDS cable connecting the Main Board and the Logic Board is disconnected.

Troubleshooting
Procedures

Are the Vs and Va voltages normal after No Replace the SMPS

removing all cables from the SMPS?
(CN810, CN809, CN808, CN807)
Yes

No
Did problem improve? Replace the Y Main Board

Yes
No
Did problem improve? Replace the X Main Board

Yes
No
Did problem improve? Replace the Logic Board

Yes

No
Did problem improve? Replace the Y Scan Board

When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701
Caution of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the
high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.

4-4 Samsung Electronics

 Troubleshooting

■ No Sound
Symptom - Video is normal but there is no sound.
- When the speaker connectors are disconnected or damaged.
Major Checklist - When the sound processing part of the Main Board is not functioning.
- Speaker defect.

Troubleshooting
Procedures

Is the cable connection between the No

① Main Board and the speaker
properly connected?
Connect the cable properly or
replace the cable, if necessary.

Yes

Is the output voltage of SMPS normal?

② (CN801 #13)
No
Replace the SMPS

Yes

Is the speaker output terminal No

of the Main Board normal? Replace the Main Board
Yes

③ Replace the Speaker

Samsung Electronics 4-5

Troubleshooting

■ No Video
Symptom - A normal/cable network analog broadcast screen is blank or abnormal but OSD is OK.
- Check the antenna connection settings (Air: NTSC / ATSC, Cable: NTSC)
Major Checklist - Check the CVBS cable connection.
- Check the power input of the Main board.

Troubleshooting
Procedures

Is the antenna connection setting No

properly configured? Configure properly

Yes

No
① Check CN6002_P pin2 for +33V Replace the SMPS
Yes

Replace the Main Board

4-6 Samsung Electronics

 Troubleshooting

■ SMPS Troubleshooting
Power ON

Abnormal
STD_5V Check the ICB802, DB864, FB801, F801S

Normal PS-ON

Abnormal
VA Check the SUB2, QX801,QX802

Check the
Abnormal 5.3V : ICX808, QX806
Multi 12V : ICX803
VG : ICX805
18Vamp : ICX804

Normal VS-ON

Abnormal
VS Check the SUB1,QS801,QS802

Normal

Check the Other board (Image Board or Driver Board) or Cable.

Samsung Electronics 4-7

Troubleshooting

■ Drive Board Troubleshooting

1) Troubleshooting Summary
Condition Name Description Related Board
No Voltage Output Operating Voltage don't exist PSU
No Display Operating Voltage exist, but an Image doesn't exist on screen Y-MAIN, X-MAIN, Logic Main, Cable
Abnormal Display Abnormal Image(not open or short) is no screen Y-MAIN, X-MAIN, Logic Main
Sustain Open Some horizontal lines don't exist on screen Scan IC, FPC of X/Y
Sustain Short Some horizontal lines appear to be linked on screen Scan IC, FPC of X/Y
Address Open Some vertical lines don't exist on screen Logic Main, Logic Buffer, TCP
Address Short Some vertical lines appear to be linked on screen Logic Main, Logic Buffer, TCP

4-8 Samsung Electronics

 Troubleshooting

2) Troubleshooting Procedure in Abnormal Conditions

① No Display
▶ No Display is related with Y-MAIN, X-MAIN, Logic Main and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.

No Display

[ Logic Main ] [ Y-MAIN ] [ X-MAIN ]

LED Blinks Check necessary points Check necessary points

[ Logic Main ]
Check if power is supplied
( 5V, 3.3V )
YES NO

Check the LED Check the

operation power connectivity

YES NO

Check if internal is Check the Check the FUSE

Default Black MICOM operation

Check the
Check if any address Check the ASIC input voltage
data output is detected Control Signal output

If the input voltage is

Check if the data abnormal, replace the
and control signals PSU and check it
between DDR & ASIC again as this indicates
are normal a PSU output error

[ Y-MAIN ] [ X-MAIN ]
Check several points Check several points

F5000 for VDD OPEN F4001 for VCC OPEN

F5801 for Vs F4003 for Vs
FUSE Replace the Board FUSE Replace the Board
F5800 for VCC F4005 for VDD
F4004 for Ve

OK OK

Q4002, Q4202,
Q5500, Q5200, SHORT SHORT
FET/ Q4004, D4014, FET/
Q5201, Q5202, Replace the Board Replace the Board
DIODE D4013, Q4003 DIODE
Q5203, Q5400,
Q4101, Q4001,
Q5401, Q5402,
D4018, Q4007,
Q5300, D5105
Q4006, Q4005
D5104, D5103,
OK D4011, D4004 OK
Q5101, D5101,
Q5100

Y-MAIN X-MAIN
Normal State Normal State

Samsung Electronics 4-9

Troubleshooting

② Abnormal Display(Abnormal Image is on Screen.(except abnormality in Sustain or Address))

▶ Abnormal Display is related with Y-MAIN, X-MAIN, Logic Main and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.
Abnormal
Display

[ Logic Main ]
[ Y-MAIN ] [ X-MAIN ]
Observation of
Check necessary points Check necessary points
abnormal display

[ Logic Main ]
LED Blinks
( action of Vsync )

Regular NO
Logic Main
abnormal
pattern Normal State

YES

Replace the Board Replace Panel

[ Y-MAIN ] [ X-MAIN ]
Check several points Check several points

F5000 for VDD OPEN F4001 for VCC OPEN

F5801 for Vs F4003 for Vs
FUSE Replace the Board FUSE Replace the Board
F5800 for VCC F4005 for VDD
F4004 for Ve

OK OK

SHORT SHORT
Q4002, Q4202,
Q5500, Q5200, FET Replace the Board FET Replace the Board
Q4004, Q4003
Q5201, Q5202,
Q4101, Q4001,
Q5203, Q5400,
Q4007, Q4006,
Q5401, Q5402,
Q4005
Q5300, Q5101,
OK OK
Q5100

Y-MAIN X-MAIN
Normal State Normal State

4-10 Samsung Electronics

 Troubleshooting

③ Sustain Open (some horizontal lines don't exist on screen)

[ Y-FPC ]
Sustain Open

NG
After Changing Y-buffer, Replace the Panel
recheck the status There is a defect on the FPC

OK

Done
(Defect is from Y-buffer)

④ Sustain Short (some horizontal lines appear to be linked on Video)

[ Y-FPC ]
Sustain Short
(Discharging in unwanted Scan line)

NG
After Changing Y-buffer, Replace the Panel
recheck the status There is a defect on the FPC

OK

Done
(Defect is from Y-buffer)

Samsung Electronics 4-11

Troubleshooting

⑤ Address Open, Short

▶ Address Open and Short is related with Logic Main, Logic Buffer, FFC, TCP film and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.

[ Logic Main ]
Address Open/Short
Check the LED operation

NG NG
Check if the internal mode Check the check the DDR Input voltage.
screen is normal Video Board (Vref)

OK OK
OK

NG
Reload the data onto the
MICOM and recheck it
Check if a specific TCP Block check the DDR Vref Input voltage.
screen is displayed abnormally check the Voltage Divider.

Check if there is an open or

short circuit on the Buffer Board
and the Logic Main address
data output section.
Check the FFC connection status
OK
NG NG

Check the detailed waveform Replace Logic Main /

and control the signal waveform Address Buffer (E or F) /
FFC

NG
OK
DONE
Replace the Panel

4-12 Samsung Electronics

 Troubleshooting

■ Logic board Troubleshooting

ྙ ྚ ྛ ྜ
ྠ ྡ

ྞ
ྟ ྜྷ

ྞ
ྡྷ ྣ
ྦྷ

ྤ ྦ
ྥ

50" Logic Board

Item Name Description

1 Y Connector The connector to output the Y Drive Board control signal.
The connector to receive LVDS-encoded RGB, H, V, DATAEN, and DCLK inputs
2 LVDS Connector
from the Video Board.
3 Power Connector The connector to receive power (5V) for the Logic Board.
4 X Connector The connector to output the X Drive Board control signal.
The main processor that generates and outputs the logic drive signal and the
5 ASIC Chip
address data.
6 DDR Memory for MENCON The memory to save the Address output data to.
7 SDR Memory for Frame Delay The memory to save FCR-applied data to.
8 JTAG Port The port for uCOM communication
Select the NTSC/PAL Mode Rolling Option for the initial screen (CN2007)
Internal Black Internal NTSC Mode (Rolling) Internal PAL Mode (Rolling)
9 Start Screen Option Pin
‫ڏ‬ ‫ڎ‬ ‫ڏ‬ ‫ڎ‬ ‫ڏ‬ ‫ڎ‬

‫ڍ‬ ‫ڌ‬ ‫ڍ‬ ‫ڌ‬ ‫ڍ‬ ‫ڌ‬

The connector to load the MICOM drive program by connecting GA-WRITER. This
MICOM Loading 5 Pin Connector or
10 connector is also used to load and adjust 512K data and to connect the key-scan
UART Communication Connector
board.
11 Flash Memory The flash memory to save the MICOM data to.
The connector to output the address data and the control signal to the E-buffer
12 Buffer Connection Connector
Board at the bottom.
The LED indicating that the Sync and clock signals have been received normally
13 Operation LED
by the Logic Board (Normal Status: It blinks at 0.5 second interval.)
The connector to output the address data and the control signal to the F-buffer
14 Buffer Connection Connector
Board at the bottom.
15 V-TOGG The V-SYNC Output Pin

Samsung Electronics 4-13

Troubleshooting

ྡྷ ྤ ྦྷ ྚ

ྟ ྛ
ྙ
ྜྷ
ྣ
ྞ ྜ

ྤ ྠ ྦ

42" Logic Board

Item Name Description

1 Y Connector The connector to output the Y Drive Board control signal.
The connector to receive LVDS-encoded RGB, H, V, DATAEN, and DCLK inputs
2 LVDS Connector
from the Video Board.
3 Power Connector The connector to receive power (5V) for the Logic Board.
4 X Connector The connector to output the X Drive Board control signal.
The main processor that generates and outputs the logic drive signal and the
5 ASIC Chip
address data.
6 DDR Memory for MENCON The memory to save the Address output data to.
7 SDR Memory for Frame Delay The memory to save FCR-applied data to.
8 JTAG Port The port for uCOM communication
Select the NTSC/PAL Mode Rolling Option for the initial screen (CN2007)
Internal Black Internal NTSC Mode (Rolling) Internal PAL Mode (Rolling)
9 Start Screen Option Pin
‫ڏ‬ ‫ڎ‬ ‫ڏ‬ ‫ڎ‬ ‫ڏ‬ ‫ڎ‬

‫ڍ‬ ‫ڌ‬ ‫ڍ‬ ‫ڌ‬ ‫ڍ‬ ‫ڌ‬

The connector to load the MICOM drive program by connecting GA-WRITER. This
MICOM Loading 5 Pin Connector or
10 connector is also used to load and adjust 512K data and to connect the key-scan
UART Communication Connector
board.
11 Flash Memory The flash memory to save the MICOM data to.
The connector to output the address data and the control signal to the E-buffer
12 Buffer Connection Connector
Board at the bottom.
The LED indicating that the Sync and clock signals have been received normally
13 Operation LED
by the Logic Board (Normal Status: It blinks at 0.5 second interval.)
The connector to output the address data and the control signal to the F-buffer
14 Buffer Connection Connector
Board at the bottom.
15 V-TOGG The V-SYNC Output Pin

4-14 Samsung Electronics

 Troubleshooting

1) Definition of a Logic Circuit

A Logic Circuit consists of a Logic Main Board, which decodes the video signal encoded on the Video Board, outputs the address
data signal, and generates and outputs the X, Y drive signals, and an Address Buffer Board which buffers and outputs the address
data output signal to the TCP IC.
Logic Board Function Remarks
- A built-in LVDS for video signal processing (W/L, Error Diffusion,
APC, FCR, etc.) adopted and 1 ASIC chip.
- Outputs the Address Drive IC control signal and data signal to
the Buffer Board.
- Outputs the X and Y Drive Board control signals.
Logic Main
- Monitors the major drive voltages (MICOM circuit part)
; Detects any surge voltage to protect the drive circuit.
- Temperature Adaptive Operating Mode (Low Temperature /
Room Temperature / High Temperature)
; Optimizes discharges depending on the temperature.

Buffer Board Lower Part E Buffer Board Delivers the data and the control signals to the bottom left TCP. Single Scan

Lower Part F Buffer Board Delivers the data and the control signals to the bottom right TCP.

2) Waveform for Normal Operations

When the PDP and the Logic Board are normal, the Operating LED blinks at a half second interval. In this case, the V-SYNC and
data signals are output normally.

In case of problems with the product, please refer to the troubleshooting procedures described below.
① Visual Inspection: Check if the Operating LED on the Logic Main blinks at a half second interval.
▶ If the frequency of the blinking is too fast or slow, it means that the MICOM has failed to process the data properly.
Therefore, you have to reload the data onto the MICOM. Load the data using GA-WRITER when the power is
connected to the module.
② If no problem is found during the Visual Inspection, check if the drive waveform and the address data outputs are normal using
an oscilloscope. (Checkpoint: The DAMPING R-NET part output of each data output terminal.)
▶ If no drive waveform or address output is measured, this means that there is a drive problem due to MICOM data corruption,
which was the reason in the Visual Inspection. Therefore, in this case, reload the data as you did in the Visual Inspection.
▶ When data output is measured but it is abnormal, and the drive waveform is abnormal, it is probably due to a short-circuit of
the hardware. If the address data is abnormal, the screen may be abnormal due to abnormal data output by an abnormal
operation of the DDR memory due to an abnormal Vref voltage, or the screen may be abnormal due to a short-circuit in the
ass'y inside the board. You have to conduct a short-circuit test for each case.
▶ If the Vref voltage (the voltage of the Voltage Divider) is lower than 1.25V, check the resistance of the resistance output part
and check if the circuit is normal. If the Vref voltage is normal, the screen operates normally.
▶ If the screen is abnormal, even though the Vref voltage is normal, check if there is a short circuit by conducting a
short-circuit test. If a short-circuit is found, repair it. If the short-circuit is an internal one, replace the board.
▶The following waveforms represent normal V-sync and address data output waveforms.

Samsung Electronics 4-15

Troubleshooting

3) Troubleshooting Procedure in Abnormal Conditions

① No Display

[ Logic Main ]
Check if power is supplied
( 5V, 3.3V )
YES NO

Check the LED Check the

operation power connectivity

YES NO

Check if internal is Check the Check the FUSE

Default Black MICOM operation

Check the
Check if any address Check the ASIC input voltage
data output is detected Control Signal output

If the input voltage is

Check if the data abnormal, replace the
and control signals PSU and check it
between DDR & ASIC again as this indicates
are normal a PSU output error

② Abnormal Display

[ Logic Main ]
Address Open/Short
Check the LED operation

NG NG
Check if the internal mode Check the check the DDR Input voltage.
screen is normal Video Board (Vref)

OK OK
OK

NG
Reload the data onto the
MICOM and recheck it
Check if a specific TCP Block check the DDR Vref Input voltage.
screen is displayed abnormally check the Voltage Divider.

Check if there is an open or

short circuit on the Buffer Board
and the Logic Main address
data output section.
Check the FFC connection status
OK
NG NG

Check the detailed waveform Replace Logic Main /

and control the signal waveform Address Buffer (E or F) /
FFC

NG
OK
DONE
Replace the Panel

4-16 Samsung Electronics

 Troubleshooting

4-1-3 Faults and Corrective Actions

Symptom Related Image Causes and Countermeasures
A blank vertical cell (block) Address buffer defect
appears on the screen. - Replace the corresponding upper/lower
buffers (E, F)

COF defect (burnt)

- Replace the module

A green screen appears when The Scale is not reseting

the TV is turned on. - Replace the Main board

The OSD box appears but there Incorrect program version

is no text. - Check the version of each program
- Replace the Main board

A blank upper (or lower) block Upper/Lower Y Buffer defect

appears on the screen. - Replace the corresponding upper/lower
buffers (E, F)

Samsung Electronics 4-17

Troubleshooting

Symptom Related Image Causes and Countermeasures

Either the main or sub picture Replace the Main board
does not appear.

A vertical green line appears on The SMPS voltage is incorrect

the screen. - Adjust the SMPS voltage according to
the voltage printed on the module label

Dim screen (blurred in red) X-Main board defect

- Replace the X-Main board

A blank screen appears - Replace the Y-Main board

4-18 Samsung Electronics

 Troubleshooting

4-1-4 Troubleshooting Procedures by assembly

No Assembly Major Symptoms
1 SMPS-PDP TV No power, Blank screen, the Relay repeats On and Off.
2 ASSY PDP MODULE P-X-MAIN Blank screen
3 ASSY PDP MODULE P-Y-MAIN Blank screen
4 ASSY PDP MODULE P-LOGIC MAIN Blank screen, Screen noise
5 ASSY PDP MODULE P-X-MAIN BUFFER Row Bar screen is blank
6 ASSY PDP MODULE P-ADDRESS E BUFFER Corresponding Buffer Board block screen is blank.
7 ASSY PDP MODULE P-ADDRESS F BUFFER Corresponding Buffer Board block screen is blank.
8 ASSY PCB MISC-MAIN No Power, Abnormal screen for each input source, PIP screen trouble, Sound trouble
9 ASSY BOARD P-FUNCTION The side function key does not work properly
The side function key does not work properly.
10 ASSY BLUE P
The remote control does not work properly, the LED does not work properly.

<PDP 42”> <PDP 50”>

Samsung Electronics 4-19

Troubleshooting

4-2 Adjustment
4-2-1 Service Instruction

■ Before Performing After Sales Services

1. Check if the measurement and test equipment is working properly.
2. Secure sufficient work space for disassembling the product.
3. Prepare a soft pad for disassembling the product.

■ Service adjustment item after replacement of Board

<If adjustment equipment is available>
① PDP Option of Factory Mode → set the Factory Data Type item as the suitable value of relevant model.
② Adjust Calibration of Factory Mode for each mode.
③ Adjust White Balance of Factory Mode.

<If adjustment equipment is not available>

① Write down the value of HDMI White Balance of Factory Mode before replacing Board.
② PDP Option of Factory Mode → set the Factory Data Type item as the suitable value of relevant model.
③ Set the value of HDMI White Balance with the value written down before.

4-20 Samsung Electronics

 Troubleshooting

4-2-2 How to Access Service Mode

1. General Remote
1) Stand by
- Europe: INFO → MENU → MUTE → POWER ON
2. Factory Remote
1) You can enter as pushing Display + Factory in state of power-on.

2) Push Factory Key again, and you can enter Aging mode. Push Factory Key again, and you can go back Factory mode.
(Factory ↔ Aging)

3) Push Display + 3 Speed Key, and you can enter aging mode.

3. Settings when entering Factory mode

- Sharp Screen (Dynamic), Color Tone (Cool1), Factory (Dynamic CE Off)

4. The contents to change when entering Service Mode

No Item Mode Remark
1 Picture Mode Dynamic
2 Color Tone Mode Cool 1
3 Picture Size Wide
4 Dynamic Contrast Off
5 Digital NR Off
6 PIP Off
7 Gama Off OSD is ON

5. Adjustment Procedures
- Channel ▲ ▼ Key: Select an item.
- Volume ◀▶ Key: Adjust the value up or down.
- MENU Key: Save the changes to the EEPROM and return to the higher-level mode.
- Using the Numeric (0~9) keys, you can select a channel.
- Using the SOURCE key, you can switch AV modes.

5. Initial SERVICE MODE DISPLAY State

Panel On Time(Hour) 00003 L24E_DS TV P1

1.Option Table(Service) 023A 7805 0401 3309 0801 0401

2. WB Adjust
3.Information 4. Advanced Menu
Checksum
T-PRP42PEUMD-0000.0
Nov 19 2007 Month/Day/Year
12:51:42 Hour/Min/Sec

※ The version of the firmware displayed at the bottom of the screen may differ and the firmware is subject to change for the
improvement of product functions.
※ If you have adjusted the settings in Service Mode, you have to reset the product.

Samsung Electronics 4-21

Troubleshooting

4-2-3 Factory Data ★ The underlined are items applied during the service adjustment. None of the others should be adjusted.

1. Option Table(Service)

DEFAULT
NO Item OPTIONS
OPTION
1 Factory Reset
2 Country Default
3 Ready Off On/Off
4 Panel Inch 50 19/22/23/26/27/32/37/40/42/46/50/52/57
5 Dimm Type INT
6 Panel Type 32CMO
7 Model Option Carnelian Amber/Coral/Jade/Tanzanite/Pyrope/Carnelian
8 Anynet+ Off On/Off
9 Light Effect On On/Off
10 TTX On ON/Off
11 TTX List FLOF List/FLOF
12 TTX Group Lang OSD W Europe/E Europe/Russia/Greek/Turkey/Arab/Farsi/ArabHbrw/Lang OSD
13 Carrier Mute Off On/Off
14 High Devi Off On/Off
15 Volume Curve Small
16 Hot Plug On On/Off
15 HotPlugCtrl On On/Off
16 HotPlugDelay 12 0-63
17 Auto Power On On/Off
18 LNA Menu Off On/Off
"Off or opens the ""Hotel Option"" sub page with the following items:Hotel Mode Off
(Off/On)Power on Channel 1 (0-99)Power on Volume 10 (0-99)Max Volume 100 (0-
19 Hotel Option Off 99)OffPower On Source TV/EXT1/AV2/S-Video1/S-
Video2/Component1/Component2/PC/HDMI2/HDMI3/HDMI4/Wise LinkVideoMute CH1 2 (0-
99)VideoMute CH2 2 (0-99)VideoMute CH3 2 (0-99)"
20 D.Gamma OFF OFF; 0.85 32; 0.95 32; 0.85; 0.88; 0,90; 0,93; 0,95; 0,98; 22_19
21 PC Ident On On/Off
"English/Germany/French/Italia/Spain/Netherland/Portuguese/Greek/Czech/Serbian/Croatian/Ro
22 Language English
manian/Hungarian/Polish/Russian/Bulgarian/Turkish/Swedish/Norwgian/Danish/Finnish"
23 Ch Table SESK SUWON/SESK/SEH/TTSEC/SEIN/SDMA/TTSED/SAVINA/Lang OSD
24 DDR Etron
25 Shop Mode Off On/Off
26 Nordic On On/Off
27 NT Conversion Off
"Opens the ""Control"" sub page with the following items:WM Calib : OffEDID ProtectEDID
28 Control
TypeEDID WriteWB DataEEPROM ResetLogic Download"
50" EU MRT/50" EU MESH/50" EU SPU/50" EA MRT/50" EA MESH/50" EA SPU/42" EU
29 PDP Filter 50" EU SPU
MRT/42" EU MESH/42" EU SPU/42" EA MRT/42" EA MESH/42" EA SPU
30 PDP Group L25E_DS L25E_DS/L24E_RS/L25E_RS/L24E_DS
31 Spread Spectrum

4-22 Samsung Electronics

 Troubleshooting

2. WB Adjust
No Item Sub Page
AV Calibration Failure/Success
COMP Calibration Failure/Success
1 Calibration
PC Calibration Failure/Success
HDMI Calibration Failure/Success
Sub Bright 128
Red Offset 128
Green Offset 128
Blue Offset 128
2 White Balance
Sub Contrast 128
Red Gain 128
Green Gain 128
Blue Gain 128
Std Contr 80
Std Bright 45
Std Sharp 50
3 EPA Standard
Std Color 50
Std Tint 50
Std Backlight 7
WB Movie On/Off
Color Mode Dynamic/Movie/Standard
Color Tone Cool1/Normal/Warm1/Warm2/Cool2
MSub Brigh 128
MSub Contr 128
W1_RGAIN 128
W1_BGAIN 128
W1_ROFFS 128
W2_RGAIN 128
W2_BGAIN 128
W2_ROFFS 128
W2_BOFFS 128
NO_RGAIN 128
4 Movie WB NO_BGAIN 128
NO_ROFFS 128
NO_BOFFS 128
C2_RGAIN 128
C2_BGAIN 128
C2_ROFFS 128
C2_BOFFS 128
Movie Contr 128
Movie Brigh 128
Movie Color 128
Movie Sharp 128
Movie Tint 50
Mv BkLight 128
M.Gamma OFF; 0.85; 0.88; 0.90; 0.93; 0,95; 0,98; 22_19

Samsung Electronics 4-23

Troubleshooting

4. Advanced Menu

NO Item SUB PAGE SUB PAGE

CVBS Y Offs 128
CVBS Y Gain 128
Ana Y/G Offs 127
Ana U/B Offs 127
Ana V/R Offs 127
Ana Y/G Gain 82
Ana U/B Gain 82
ADC Calibration
Ana V/R Gain 82
RGB R Offs 65
RGB G Offs 65
RGB B Offs 65
RGB R Gain 111
RGB G Gain 111
RGB B Gain 111
AV ADC Target
Low 17
Hight 234
Delta 3
Comp ADC Target
Low 17
Hight 234
Delta 3
Calibration Target
1 MST68981 Pc ADC Target
Low 17
Hight 234
Delta 3
All RGB Target
Low 2
Hight 235
Delta 1
IPC/MJC
Sharpness
H1 Gain 30
H2 Gain 24
H3 Gain 16
H4 Gain 16
V1 Gain 24
V2 Gain 20
Picture Enhance
D1 Gain 16
D2 Gain 16
Over Shoot2 20
Over Shoot3 20
Under Shoot2 20
Under Shoot3 20
Sub Color 60

4-24 Samsung Electronics

 Troubleshooting

NO Item SUB PAGE SUB PAGE

Pattern Select 0
B-Slope Gain 80
B-Tilt Min 20
B-Tilt Max 150
LFunc-Basis 110
Hfunc-Basis 120
Mean-Offset1 30
Mean-Offset2 235
FBE Mean Slope 112
ACR Offset 15
ACR Th1 20
ACR Th2 120
Skin Enable 1
Skin Uv 125
MSkin Uv 125
Sub Color 145
MSub Color 135
2 Option Block FRCS
FRCM
LD
Pattren Select 0-31
CCD Sw Off/On
CCD Strengh Th 0-31
BRE Sw Off/On
FRC Repeat Mode Off/On
FRC DBG MarkOn 0-15
FRC Bypass Off/On
PDPLOGIC CCD L Gain 0-31
CCD U Gain 0-31

Panel Type 82
Panel Inch 50 HD
Panel Ver. Nicam Threshold
Logic Sw Ver. 07Y 10M 23D
Panel Temp + 43

Samsung Electronics 4-25

Troubleshooting

NO Item SUB PAGE SUB PAGE

Saturation Mute Off/On
FM Prescale 26
AM Prescale 24
Nicam Prescale 24
FM M Prescale 20
SC1 Vol 20
SC2 Vol 20
Audio Delay On/Off
Audio Delay Time 8
Ch1 BW 2
Ch2 BW 1
Num of Check 1
Num of Double Check 5
Mono Weight 1
Stereo Weight 1
Dual Weight 1
BG M2S Threshold 144
DK M2S Threshold 80
BG S2M Threshold 176
DK S2M Threshold 0
FINE VOL 20
Carier1 Treshold
BG Amp On Thr 5
BG NSR On Thr 13
3 Sound
DK Amp On Thr 5
DK NSR On Thr 13
I Amp On Thr 5
I NSR On Thr 13
M Amp On Thr 5
M NSR On Thr 13
Carier2 Treshold
BG Amp On Thr 4
Detection Threshold BG NSR On Thr 11
DK Amp On Thr 4
DK NSR On Thr 11
Nicam Treshold
BG SIG_ERR On Thr 95
BG SIG_ERR Off Thr 84
DK SIG_ERR On Thr 95
DK SIG_ERR Off Thr 84
I SIG_ERR On Thr 95
I SIG_ERR Off Thr 84
L SIG_ERR On Thr 95
L SIG_ERR Off Thr 84
Ext Volume Scale 0
Ext Prescale Speaker 0
R2E Scart2 Offset 0
NPT 3000

4-26 Samsung Electronics

 Troubleshooting

NO Item SUB PAGE SUB PAGE

NTP Master Volume 30
NTP PWM Modulation 254
3 NPT 3000
NTP DRC Tresh 17
NTP Speaker EQ On/Off
PAL BG 4
PAL DK 4
PAL I 4
SECAM BG 5
SECAM DK 5
SECAM L 4
4 YC Delay
NTSC 358 17
NTSC 443 1
AV PAL 1
AV SECAM 2
AV NT443 1
AV PAL60 17
Video Mute Time 8
Dynamic Dimming Off/On
Dynamic CE On/Off
RF dB 1 Level 4
RF dB 2 Level 10
LNA Plus
RF dB 3 Level 20
RF dB 4 Level 33
Megazine LNA Off/On
DTV WatchDog Off/On
Main WatchDog Off/On
UART Select Main/iDTV/LVDS On
Debug Mode MSTAR/RunTime/Normal/NONE
5 Adjust
BackEndMute Off/On

Tuner Select ALPS_SLIM/SEMCO_SLIM/SEMCO_CABLE/ALPS_OLD

Tuner TOP Semco 10

Tuner TOP Alps 13
PixelShift Test Off/On
FBE Select FBE2X/FBE
Hp Detect High/Low
????? OK
D WatchDog Count 0
PDP FRC On/Off
Visual Test Off/On
6 Bus Stop
LogList1 Shows the defect Log if any
7 Defect Log LogList2 Shows the defect Log if any
LogList3 Shows the defect Log if any

Samsung Electronics 4-27

Troubleshooting

4-2-4 Service Adjustment

■ White Balance - Calibration

If picture color is wrong, do calibration first.

Execute calibration in Factory Mode (AV mode example):

1. Source : VIDEO (AV mode)
2. Setting Video Mode (Timing) : PAL Video (MODE : #2)
3. Setting pattern : Pattern #24 (Chess Pattern)
4. Use Equipment : K-7256 or Equipment of equality level
5. Work order:
1) Enter Factory Mode and select "2. WB Adjust" → "Calibration"
2) Select "AV CALIBRATION" and press the right button on the remocon ( ▶ )
3) After completing calibration, the "Success..." message will be displayed next by "AV CALIBRATION"

For Component/HDMI mode use resolution of 1280x720/60Hz (MODE: #6)

For PC mode use resolution of 1024x768/60Hz (MODE: #21)

( Chess Pattern )

4-28 Samsung Electronics

 Troubleshooting

■ White Balance - Adjustment

If picture color is wrong, check White Balance condition.

Equipment : CA210, Patten : Toshiba

Adjust W/B in Factory Mode

Sub brightness and R/G/B Offset controls low light region

Sub contrast and R/G/B Gain controls high light region
Source AV : PAL composite, Component : 1280*720/60Hz,
HDMI[DVI] : 1280*720/60Hz

[ Test Pattern : MSPG-945 Series Pattern #16 ]

* Color temperature
1500K +/-500, -6 ~-20 MPCD

* Color coordinate
H/L : 270/280 +/- 2
L/L : 270/280 +/- 3, 2.1 Ft +/-0.05 Ft

( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD )

■ Conditions for Measurement

1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
- INPUT SIGNAL GENERATOR : MSPG-925LTH
* Mode No 2 : 744X484@60 Hz
No 6 : 1280X720@60 Hz
No 21 : 1024X768@60 Hz
* Pattern No 36 : 16 Color Pattern
No 16 : Toshiba ABL Pattern

2. Optical measuring device : CA210 (FL)

Please use the MSPG-925 LTH generator for model PS-42Q96HD, PS-50Q96HD.

Samsung Electronics 4-29

Troubleshooting

■ Method of Adjustment

1. Adjust the white balance of AV, Component and DVI Modes.

(AV → Component)
a) Set the input to the mode in which the adjustment will be made (RF → DTV → PC → DVI).
* Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16
- DTV, DVI Mode : Model #6 (1280*720 Mode), Pattern #16
- HDMI Mode : Model #6 (1280*720 Mode), Pattern #16

b) Enter factory color control, confirm the data.

c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)

- Adjust sub - Brightness to set the 'Y' value.
- Adjust red offset ('x') and blue offset ('y') to the color coordinates.

Low light
Measurement point

( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD )

* Do not adjust green offset data.

d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)

- Adjust red gain ('x') and blue gain ('y') to the color coordinates.

Hight light
Measurement point

( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD )

* Do not adjust the green gain and sub-contrast (Y) data.

4-30 Samsung Electronics

 Troubleshooting

4-2-5 Replacements & Calibration

* PDP 42" Check items listed after changing each

Replaced assembly items Check Items
1) Auto Program
ASSY PCB MISC-MAIN
2) White Balance Adjust
SMPS-PDP TV Vs, Va voltage check and adjust
ASSY PDP MODULE P-LOGIC MAIN
ASSY PDP MODULE P-X-MAIN
ASSY PDP MODULE P-Y-MAIN Not to be adjusted
ASSY PDP MODULE P-ADDRESS E BUFFER
ASSY PDP MODULE P-ADDRESS F BUFFER

* PDP 50" Check items listed after changing each

Replaced assembly items Check Items
1) Auto Program
ASSY PCB MISC-MAIN
2) White Balance Adjust
SMPS-PDP TV Vs, Va voltage check and adjust
ASSY PDP MODULE P-LOGIC MAIN
ASSY PDP MODULE P-X-MAIN
ASSY PDP MODULE P-Y-MAIN
Not to be adjusted
ASSY PDP MODULE P-X-MAIN BUFFER
ASSY PDP MODULE P-ADDRESS E BUFFER
ASSY PDP MODULE P-ADDRESS F BUFFER

※ When replacing the SMPS or PDP panel, you have to check the voltage printed on the panel sticker and adjust it.

Samsung Electronics 4-31

Troubleshooting

■ Voltage Adjustment

1. After replacing the SMPS or PDP panel, you must adjust the voltage referring to the voltage label printed on the panel.
(If you do not adjust the voltage, an abnormal discharge symptom may appear.)
Value Board Adjustment
Vs 210
Va 63
Vset - SMPS
Ve 94
Vscan -190

SMPS

Voltage Label

2. A point of adjusting SMPS-MAIN voltage.

Va Adjustment
Vs Adjustment

Vs Test point

Vs Test point

4-32 Samsung Electronics

 Troubleshooting

■ Y-RR and Y-FR controls

Test Point

For the Drive Waveform, adjust the Main Reset (Rising Ramp and Falling Ramp) in the F/W pattern as shown by the figure.

Yrr

Yfr

Vs Vsc_l Ve Va
205V -190V 100V 56V(FIX)

< Voltage Adjustment Specifications >

Rising ramp

Falling ramp

Y-Main

Samsung Electronics 4-33

Troubleshooting

4-3 Upgrade
4-3-1 How to Update Flash ROM (with RS-232C Cable)

▶Please upgrade set only when standby.

1. Installthe Flash Downloader

ConnectSet(Service Jack)and Jig Cable to execute Program Update.

2. Flash Downloader program update

- Turn on the TV Set
- Click "Connect" icon on the MSTAR tool.
- Click "Read", and Choose a new S/W.
- Click "Auto", and "Run"

4-34 Samsung Electronics

 Troubleshooting

4-3-2 How to Check the Version of the Program

1. Procedures for checking in the Factory Menu.

When entering Factory Mode, the version of the software is displayed at the bottom of the menu as described on page 4-17.

Panel On Time(Hour) 00003 L24E_DS TV P1

1.Option Table(Service) 023A 7805 0401 3309 0801 0401

2. WB Adjust
3.Information 4. Advanced Menu
Checksum
T-PRP42PEUMD-0000.0 S/W Version
Nov 19 2007
12:51:42

Samsung Electronics 4-35