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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
Symptom - The LEDs on the front panel do not work when connecting the power cord. - 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 the Main SMPS CN800 connected? Yes Is the Fuse (F801S) of the Main SMPS Power Input Part blown? Yes CN801 Check the STD5V vOLTAGE Check PS_ON voltage if it is 0V Yes Replace the Main Board
No
The AC IN socket connector and the Main SMPS CN800 connected
Yes
Replace Fuse (F801S)
No
Replace the Main SMPS
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 connecting the power after removing CN810 from the SMPS? Yes Does the symptom continue when connecting the power after removing CN809 from the SMPS? Yes Does the symptom continue when connecting the power after removing CN807 from the SMPS? Yes Replace the SMPS
No
Replace the Y Main Board
No
Replace the X Main Board
No
Replace the Logic Board
Caution
When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701 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 removing all cables from the SMPS? (CN810, CN809, CN808, CN807) Yes Did problem improve? Yes Did problem improve? Yes Did problem improve? Yes Did problem improve? No Replace the Y Scan Board No Replace the Logic Board No Replace the X Main Board No Replace the Y Main Board No Replace the SMPS
Caution
When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701 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 Main Board and the speaker properly connected? Yes Is the output voltage of SMPS normal? (CN801 #13) Yes Is the speaker output terminal of the Main Board normal? Yes
No
Connect the cable properly or replace the cable, if necessary.
No
Replace the SMPS
No
Replace the Main Board
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 properly configured? Yes
No
Configure properly
Check CN6002_P pin2 for +33V Yes Replace the Main Board
No
Replace the SMPS
4-6
Samsung Electronics
Troubleshooting
SMPS Troubleshooting
Power ON
STD_5V
Abnormal
Check the ICB802, DB864, FB801, F801S
Normal
PS-ON
VA
Abnormal
Check the SUB2, QX801,QX802
Multi
Abnormal
Check the 5.3V : ICX808, QX806 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 No Voltage Output No Display Abnormal Display Sustain Open Sustain Short Address Open Address Short Description Operating Voltage don't exist Operating Voltage exist, but an Image doesn't exist on screen Abnormal Image(not open or short) is no screen Some horizontal lines don't exist on screen Some horizontal lines appear to be linked on screen Some vertical lines don't exist on screen Some vertical lines appear to be linked on screen PSU Y-MAIN, X-MAIN, Logic Main, Cable Y-MAIN, X-MAIN, Logic Main Scan IC, FPC of X/Y Scan IC, FPC of X/Y Logic Main, Logic Buffer, TCP Logic Main, Logic Buffer, TCP Related Board
4-8
Samsung Electronics
Troubleshooting
2) Troubleshooting Procedure in Abnormal Conditions 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 ] LED Blinks
[ Y-MAIN ] Check necessary points
[ X-MAIN ] Check necessary points
[ Logic Main ] Check if power is supplied ( 5V, 3.3V ) YES NO
Check the LED operation
Check the power connectivity
YES Check if internal is Default Black
NO Check the MICOM operation Check the FUSE
Check if any address data output is detected
Check the ASIC Control Signal output
Check the input voltage
Check if the data and control signals between DDR & ASIC are normal
If the input voltage is abnormal, replace the PSU and check it again as this indicates a PSU output error
[ Y-MAIN ] Check several points
[ X-MAIN ] Check several points
F5000 for VDD F5801 for Vs F5800 for VCC
OPEN FUSE Replace the Board
F4001 for VCC F4003 for Vs F4005 for VDD F4004 for Ve
OPEN FUSE Replace the Board
OK Q5500, Q5200, Q5201, Q5202, Q5203, Q5400, Q5401, Q5402, Q5300, D5105 D5104, D5103, Q5101, D5101, Q5100 SHORT Replace the Board Q4002, Q4202, Q4004, D4014, D4013, Q4003 Q4101, Q4001, D4018, Q4007, Q4006, Q4005 D4011, D4004
OK SHORT Replace the Board
FET/ DIODE
FET/ DIODE
OK
OK
Y-MAIN Normal State
X-MAIN Normal State
Samsung Electronics
4-9
Troubleshooting
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 ] Observation of abnormal display
[ Y-MAIN ] Check necessary points
[ X-MAIN ] Check necessary points
[ Logic Main ] LED Blinks ( action of Vsync )
Regular abnormal pattern
NO
Logic Main Normal State
YES
Replace the Board
Replace Panel
[ Y-MAIN ] Check several points
[ X-MAIN ] Check several points
F5000 for VDD F5801 for Vs F5800 for VCC
OPEN FUSE Replace the Board
F4001 for VCC F4003 for Vs F4005 for VDD F4004 for Ve
OPEN FUSE Replace the Board
OK SHORT Q5500, Q5200, Q5201, Q5202, Q5203, Q5400, Q5401, Q5402, Q5300, Q5101, Q5100 FET Replace the Board
OK SHORT FET Replace the Board
Q4002, Q4202, Q4004, Q4003 Q4101, Q4001, Q4007, Q4006, Q4005
OK
OK
Y-MAIN Normal State
X-MAIN Normal State
4-10
Samsung Electronics
Troubleshooting
Sustain Open (some horizontal lines don't exist on screen)
[ Y-FPC ] Sustain Open
After Changing Y-buffer, recheck the status
NG
Replace the Panel There is a defect on the FPC
OK
Done (Defect is from Y-buffer)
Sustain Short (some horizontal lines appear to be linked on Video)
[ Y-FPC ] Sustain Short (Discharging in unwanted Scan line)
After Changing Y-buffer, recheck the status
NG
Replace the Panel There is a defect on the FPC
OK
Done (Defect is from Y-buffer)
Samsung Electronics
4-11
Troubleshooting
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
Check if the internal mode screen is normal
NG
Check the Video Board OK
NG
check the DDR Input voltage. (Vref) OK
OK NG Reload the data onto the MICOM and recheck it Check if a specific TCP Block screen is displayed abnormally check the DDR Vref Input voltage. check the Voltage Divider.
OK
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 NG NG Replace Logic Main / Address Buffer (E or F) / FFC OK NG Replace the Panel
Check the detailed waveform and control the signal waveform
DONE
4-12
Samsung Electronics
Troubleshooting
Logic board Troubleshooting
50" Logic Board Item 1 2 3 4 5 6 7 8 9 Name Y Connector LVDS Connector Power Connector X Connector ASIC Chip DDR Memory for MENCON SDR Memory for Frame Delay JTAG Port Start Screen Option Pin Description The connector to output the Y Drive Board control signal. The connector to receive LVDS-encoded RGB, H, V, DATAEN, and DCLK inputs from the Video Board. The connector to receive power (5V) for the Logic Board. The connector to output the X Drive Board control signal. The main processor that generates and outputs the logic drive signal and the address data. The memory to save the Address output data to. The memory to save FCR-applied data to. 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)
10 11 12 13 14 15
The connector to load the MICOM drive program by connecting GA-WRITER. This MICOM Loading 5 Pin Connector or connector is also used to load and adjust 512K data and to connect the key-scan UART Communication Connector board. Flash Memory Buffer Connection Connector Operation LED Buffer Connection Connector V-TOGG The flash memory to save the MICOM data to. The connector to output the address data and the control signal to the E-buffer Board at the bottom. The LED indicating that the Sync and clock signals have been received normally 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 Board at the bottom. The V-SYNC Output Pin 4-13
Samsung Electronics
Troubleshooting
42" Logic Board Item 1 2 3 4 5 6 7 8 9 Name Y Connector LVDS Connector Power Connector X Connector ASIC Chip DDR Memory for MENCON SDR Memory for Frame Delay JTAG Port Start Screen Option Pin Description The connector to output the Y Drive Board control signal. The connector to receive LVDS-encoded RGB, H, V, DATAEN, and DCLK inputs from the Video Board. The connector to receive power (5V) for the Logic Board. The connector to output the X Drive Board control signal. The main processor that generates and outputs the logic drive signal and the address data. The memory to save the Address output data to. The memory to save FCR-applied data to. 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)
10 11 12 13 14 15 4-14
The connector to load the MICOM drive program by connecting GA-WRITER. This MICOM Loading 5 Pin Connector or connector is also used to load and adjust 512K data and to connect the key-scan UART Communication Connector board. Flash Memory Buffer Connection Connector Operation LED Buffer Connection Connector V-TOGG The flash memory to save the MICOM data to. The connector to output the address data and the control signal to the E-buffer Board at the bottom. The LED indicating that the Sync and clock signals have been received normally 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 Board at the bottom. The V-SYNC Output Pin 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 - 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. - 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. Lower Part E Buffer Board Delivers the data and the control signals to the bottom left TCP. 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. 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. 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. Single Scan Remarks
Logic Main
Buffer Board
Samsung Electronics
4-15
Troubleshooting
3) Troubleshooting Procedure in Abnormal Conditions No Display
[ Logic Main ] Check if power is supplied ( 5V, 3.3V ) YES NO
Check the LED operation
Check the power connectivity
YES Check if internal is Default Black
NO Check the MICOM operation Check the FUSE
Check if any address data output is detected
Check the ASIC Control Signal output
Check the input voltage
Check if the data and control signals between DDR & ASIC are normal
If the input voltage is abnormal, replace the PSU and check it again as this indicates a PSU output error
Abnormal Display
[ Logic Main ] Address Open/Short Check the LED operation
Check if the internal mode screen is normal
NG
Check the Video Board OK
NG
check the DDR Input voltage. (Vref) OK
OK NG Reload the data onto the MICOM and recheck it Check if a specific TCP Block screen is displayed abnormally check the DDR Vref Input voltage. check the Voltage Divider.
OK
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 NG NG Replace Logic Main / Address Buffer (E or F) / FFC OK NG Replace the Panel
Check the detailed waveform and control the signal waveform
DONE
4-16
Samsung Electronics
Troubleshooting
4-1-3 Faults and Corrective Actions
Symptom A blank vertical cell (block) appears on the screen. Related Image Causes and Countermeasures Address buffer defect - Replace the corresponding upper/lower buffers (E, F) COF defect (burnt) - Replace the module
A green screen appears when the TV is turned on.
The Scale is not reseting - Replace the Main board
The OSD box appears but there is no text.
Incorrect program version - Check the version of each program - Replace the Main board
A blank upper (or lower) block appears on the screen.
Upper/Lower Y Buffer defect - Replace the corresponding upper/lower buffers (E, F)
Samsung Electronics
4-17
Troubleshooting
Symptom Either the main or sub picture does not appear.
Related Image
Causes and Countermeasures Replace the Main board
A vertical green line appears on the screen.
The SMPS voltage is incorrect - 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 1 2 3 4 5 6 7 8 9 SMPS-PDP TV ASSY PDP MODULE P-X-MAIN ASSY PDP MODULE P-Y-MAIN ASSY PDP MODULE P-LOGIC MAIN ASSY PDP MODULE P-X-MAIN BUFFER ASSY PDP MODULE P-ADDRESS E BUFFER ASSY PDP MODULE P-ADDRESS F BUFFER ASSY PCB MISC-MAIN ASSY BOARD P-FUNCTION Assembly No power, Blank screen, the Relay repeats On and Off. Blank screen Blank screen Blank screen, Screen noise Row Bar screen is blank Corresponding Buffer Board block screen is blank. Corresponding Buffer Board block screen is blank. No Power, Abnormal screen for each input source, PIP screen trouble, Sound trouble The side function key does not work properly The side function key does not work properly. The remote control does not work properly, the LED does not work properly. Major Symptoms
10 ASSY BLUE P
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 PDP Option of Factory Mode set the Factory Data Type item as the suitable value of relevant model. Adjust Calibration of Factory Mode for each mode. Adjust White Balance of Factory Mode. Write down the value of HDMI White Balance of Factory Mode before replacing Board. PDP Option of Factory Mode set the Factory Data Type item as the suitable value of relevant model. 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 1 2 3 4 5 6 7 Item Picture Mode Color Tone Mode Picture Size Dynamic Contrast Digital NR PIP Gama Mode Dynamic Cool 1 Wide Off Off Off Off OSD is ON Remark
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
1. Option Table(Service)
NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 15 16 17 18 Item Factory Reset Country Ready Panel Inch Dimm Type Panel Type Model Option Anynet+ Light Effect TTX TTX List TTX Group Carrier Mute High Devi Volume Curve Hot Plug HotPlugCtrl HotPlugDelay Auto Power LNA Menu
The underlined are items applied during the service adjustment. None of the others should be adjusted.
DEFAULT OPTION Default Off 50 INT 32CMO Carnelian Off On On FLOF Lang OSD Off Off Small On On 12 On Off On/Off On/Off 0-63 On/Off On/Off On/Off 19/22/23/26/27/32/37/40/42/46/50/52/57
OPTIONS
Amber/Coral/Jade/Tanzanite/Pyrope/Carnelian On/Off On/Off ON/Off List/FLOF W Europe/E Europe/Russia/Greek/Turkey/Arab/Farsi/ArabHbrw/Lang OSD On/Off On/Off
19
Hotel Option
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 (099)OffPower On Source TV/EXT1/AV2/S-Video1/SVideo2/Component1/Component2/PC/HDMI2/HDMI3/HDMI4/Wise LinkVideoMute CH1 2 (099)VideoMute CH2 2 (0-99)VideoMute CH3 2 (0-99)" OFF; 0.85 32; 0.95 32; 0.85; 0.88; 0,90; 0,93; 0,95; 0,98; 22_19 On/Off "English/Germany/French/Italia/Spain/Netherland/Portuguese/Greek/Czech/Serbian/Croatian/Ro manian/Hungarian/Polish/Russian/Bulgarian/Turkish/Swedish/Norwgian/Danish/Finnish" SUWON/SESK/SEH/TTSEC/SEIN/SDMA/TTSED/SAVINA/Lang OSD On/Off On/Off "Opens the ""Control"" sub page with the following items:WM Calib : OffEDID ProtectEDID TypeEDID WriteWB DataEEPROM ResetLogic Download"
20 21 22 23 24 25 26 27 28 29 30 31
D.Gamma PC Ident Language Ch Table DDR Shop Mode Nordic NT Conversion Control PDP Filter PDP Group Spread Spectrum
OFF On English SESK Etron Off On Off
50" EU SPU L25E_DS
50" EU MRT/50" EU MESH/50" EU SPU/50" EA MRT/50" EA MESH/50" EA SPU/42" EU MRT/42" EU MESH/42" EU SPU/42" EA MRT/42" EA MESH/42" EA SPU L25E_DS/L24E_RS/L25E_RS/L24E_DS
4-22
Samsung Electronics
Troubleshooting
2. WB Adjust
No Item Sub Page AV Calibration 1 Calibration COMP Calibration PC Calibration HDMI Calibration Sub Bright Red Offset Green Offset 2 White Balance Blue Offset Sub Contrast Red Gain Green Gain Blue Gain Std Contr Std Bright 3 EPA Standard Std Sharp Std Color Std Tint Std Backlight WB Movie Color Mode Color Tone MSub Brigh MSub Contr W1_RGAIN W1_BGAIN W1_ROFFS W2_RGAIN W2_BGAIN W2_ROFFS W2_BOFFS NO_RGAIN 4 Movie WB NO_BGAIN NO_ROFFS NO_BOFFS C2_RGAIN C2_BGAIN C2_ROFFS C2_BOFFS Movie Contr Movie Brigh Movie Color Movie Sharp Movie Tint Mv BkLight M.Gamma Failure/Success Failure/Success Failure/Success Failure/Success 128 128 128 128 128 128 128 128 80 45 50 50 50 7 On/Off Dynamic/Movie/Standard Cool1/Normal/Warm1/Warm2/Cool2 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 50 128 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 CVBS Y Gain Ana Y/G Offs Ana U/B Offs Ana V/R Offs Ana Y/G Gain ADC Calibration Ana U/B Gain Ana V/R Gain RGB R Offs RGB G Offs RGB B Offs RGB R Gain RGB G Gain RGB B Gain AV ADC Target Low Hight Delta Comp ADC Target Low Hight 1 MST68981 Calibration Target Delta Pc ADC Target Low Hight Delta All RGB Target Low Hight Delta IPC/MJC Sharpness H1 Gain H2 Gain H3 Gain H4 Gain V1 Gain Picture Enhance V2 Gain D1 Gain D2 Gain Over Shoot2 Over Shoot3 Under Shoot2 Under Shoot3 Sub Color 30 24 16 16 24 20 16 16 20 20 20 20 60 2 235 1 17 234 3 17 234 3 17 234 3 128 128 127 127 127 82 82 82 65 65 65 111 111 111
4-24
Samsung Electronics
Troubleshooting
NO
Item
SUB PAGE
SUB PAGE Pattern Select B-Slope Gain B-Tilt Min B-Tilt Max LFunc-Basis Hfunc-Basis Mean-Offset1 Mean-Offset2 0 80 20 150 110 120 30 235 112 15 20 120 1 125 125 145 135
FBE
Mean Slope ACR Offset ACR Th1 ACR Th2 Skin Enable Skin Uv MSkin Uv Sub Color MSub Color
2
Option Block
FRCS FRCM LD Pattren Select CCD Sw CCD Strengh Th BRE Sw FRC Repeat Mode FRC DBG MarkOn FRC Bypass PDPLOGIC CCD L Gain CCD U Gain Panel Type Panel Inch Panel Ver. Logic Sw Ver. Panel Temp 0-31 Off/On 0-31 Off/On Off/On 0-15 Off/On 0-31 0-31 82 50 HD Nicam Threshold 07Y 10M 23D + 43
Samsung Electronics
4-25
Troubleshooting NO Item SUB PAGE Saturation Mute FM Prescale AM Prescale Nicam Prescale FM M Prescale SC1 Vol SC2 Vol Audio Delay Audio Delay Time Ch1 BW Ch2 BW Num of Check Num of Double Check Mono Weight Stereo Weight Dual Weight BG M2S Threshold DK M2S Threshold BG S2M Threshold DK S2M Threshold FINE VOL SUB PAGE Off/On 26 24 24 20 20 20 On/Off 8 2 1 1 5 1 1 1 144 80 176 0 20 Carier1 Treshold BG Amp On Thr 3 Sound BG NSR On Thr DK Amp On Thr DK NSR On Thr I Amp On Thr I NSR On Thr M Amp On Thr M NSR On Thr Carier2 Treshold BG Amp On Thr Detection Threshold BG NSR On Thr DK Amp On Thr DK NSR On Thr Nicam Treshold BG SIG_ERR On Thr BG SIG_ERR Off Thr DK SIG_ERR On Thr DK SIG_ERR Off Thr I SIG_ERR On Thr I SIG_ERR Off Thr L SIG_ERR On Thr L SIG_ERR Off Thr Ext Volume Scale Ext Prescale Speaker R2E Scart2 Offset NPT 3000 0 0 0 95 84 95 84 95 84 95 84 4 11 4 11 5 13 5 13 5 13 5 13
4-26
Samsung Electronics
Troubleshooting NO Item SUB PAGE NTP Master Volume 3 NPT 3000 NTP PWM Modulation NTP DRC Tresh NTP Speaker EQ PAL BG PAL DK PAL I SECAM BG SECAM DK 4 YC Delay SECAM L NTSC 358 NTSC 443 AV PAL AV SECAM AV NT443 AV PAL60 Video Mute Time Dynamic Dimming Dynamic CE SUB PAGE 30 254 17 On/Off 4 4 4 5 5 4 17 1 1 2 1 17 8 Off/On On/Off RF dB 1 Level LNA Plus RF dB 2 Level RF dB 3 Level RF dB 4 Level Megazine LNA DTV WatchDog Main WatchDog UART Select 5 Adjust Debug Mode BackEndMute Tuner Select Tuner TOP Semco Tuner TOP Alps PixelShift Test FBE Select Hp Detect ????? D WatchDog Count PDP FRC Visual Test 6 7 Bus Stop LogList1 Defect Log LogList2 LogList3 Shows the defect Log if any Shows the defect Log if any Shows the defect Log if any Off/On Off/On Off/On Main/iDTV/LVDS On MSTAR/RunTime/Normal/NONE Off/On ALPS_SLIM/SEMCO_SLIM/SEMCO_CABLE/ALPS_OLD 10 13 Off/On FBE2X/FBE High/Low OK 0 On/Off Off/On 4 10 20 33
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 )
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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
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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.
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Samsung Electronics
Troubleshooting
4-2-5 Replacements & Calibration
* PDP 42" Check items listed after changing each Replaced assembly items ASSY PCB MISC-MAIN SMPS-PDP TV ASSY PDP MODULE P-LOGIC MAIN ASSY PDP MODULE P-X-MAIN ASSY PDP MODULE P-Y-MAIN ASSY PDP MODULE P-ADDRESS E BUFFER ASSY PDP MODULE P-ADDRESS F BUFFER Not to be adjusted 1) Auto Program 2) White Balance Adjust Vs, Va voltage check and adjust Check Items
* PDP 50" Check items listed after changing each Replaced assembly items ASSY PCB MISC-MAIN SMPS-PDP TV ASSY PDP MODULE P-LOGIC MAIN ASSY PDP MODULE P-X-MAIN ASSY PDP MODULE P-Y-MAIN 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. Not to be adjusted 1) Auto Program 2) White Balance Adjust Vs, Va voltage check and adjust Check Items
Samsung Electronics
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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 Vs Va Vset Ve Vscan 210 63 94 -190 SMPS Board Adjustment
SMPS
Voltage Label
2. A point of adjusting SMPS-MAIN voltage.
Va Adjustment Vs Adjustment Vs Test point Vs Test point
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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 205V
Vsc_l -190V
Ve 100V
Va 56V(FIX)
< Voltage Adjustment Specifications >
Rising ramp
Falling
ramp
Y-Main
Samsung Electronics
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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"
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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 Nov 19 2007 12:51:42
S/W Version
Samsung Electronics
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