SAMSUNG LN32A550P3F - LN37A550P3F - LN40A550P3F - LN46A550P3F - LN52A550P3F
SERVICE MODE TROUBLESHOOTING AND T CON BOARD PROBLEMS
Factory Mode Adjustments
Entering Factory Mode
To enter ‘Service Mode’ Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
Power OFF > MUTE > 1 > 8 > 2 > Power On
How to Access Service Mode
Using the Customer Remote
Turn the power off and set to stand-by mode
Press the remote buttons in this order; POWER OFF-MUTE-1-8-2-POWER ON to turn the set on.
The set turns on and enters service mode. This may take approximately 20 seconds.
Press the Power button to exit and store data in memory.
- If you fail to enter service mode, repeat steps above.
Initial SERVICE MODE DISPLAY State
Entering Factory Mode
To enter ‘Service Mode’ Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
Power OFF > MUTE > 1 > 8 > 2 > Power On
How to Access Service Mode
Using the Customer Remote
Turn the power off and set to stand-by mode
Press the remote buttons in this order; POWER OFF-MUTE-1-8-2-POWER ON to turn the set on.
The set turns on and enters service mode. This may take approximately 20 seconds.
Press the Power button to exit and store data in memory.
- If you fail to enter service mode, repeat steps above.
Initial SERVICE MODE DISPLAY State
How to enter the hidden factory mode.
a. into the factory mode
b. key input : 0 + 2 + 1 + 4 + exit
c. select option byte menu -> in menu -> out menu
(... hidden menu appear...) hidden menu : Video/Scaler, Enhancement, SOUND, Dynamic Contrast, LNA+ FBE3(image enhance IC) generate internal pattern
a. into the factory mode
b. key input : 0 + 2 + 1 + 4 + exit
c. select option byte menu -> in menu -> out menu
(... hidden menu appear...) hidden menu : Video/Scaler, Enhancement, SOUND, Dynamic Contrast, LNA+ FBE3(image enhance IC) generate internal pattern
White Ratio (Balance) Adjustment
1.You can adjust the white ratio in factory mode (1:Calibration, 3:White-Balance).
2.Since the adjustment value and the data value vary depending on the input source, you have to adjust these in CVBS, Component 1 and HDMI 1 modes.
3.The optimal values for each mode are configured by default.
1.You can adjust the white ratio in factory mode (1:Calibration, 3:White-Balance).
2.Since the adjustment value and the data value vary depending on the input source, you have to adjust these in CVBS, Component 1 and HDMI 1 modes.
3.The optimal values for each mode are configured by default.
It varies with Panel’s size and Specification.
- Equipment : CS-210
- Pattern: MIK K-7256 #92 “Flat W/B Pattern” as standard
- Use other equipment only after comparing the result with that of the Master equipment.
- Set Aging time : 60min
- Equipment : CS-210
- Pattern: MIK K-7256 #92 “Flat W/B Pattern” as standard
- Use other equipment only after comparing the result with that of the Master equipment.
- Set Aging time : 60min
HDMI : Calibration at #24 Chessboard Pattern >
Manual adjustment #92 pattern (720p)
COMP: Calibration at #24 Chessboard Pattern > Manual adjustment at #92 pattern (720p)
CVBS: Calibration at #24 Chessboard Pattern> Manual adjustment at #92 pattern (NTSC)
COMP: Calibration at #24 Chessboard Pattern > Manual adjustment at #92 pattern (720p)
CVBS: Calibration at #24 Chessboard Pattern> Manual adjustment at #92 pattern (NTSC)
USB Download Method
Samsung may offer upgrades for TV’s firmware in the future. Please contact the Samsung to receive information about downloading upgrades and using a USB drive.
Samsung may offer upgrades for TV’s firmware in the future. Please contact the Samsung to receive information about downloading upgrades and using a USB drive.
Upgrades will be possible by connecting a USB
drive to the USB port located on your TV.
Insert a USB drive containing the firmware upgrade into the WISELINK port on the side of the TV.
Press the MENU button to display the menu.
Press the or button to select “Setup”, then press the ENTER button.
Press the or button to select “SW Upgrade”, then press the ENTER button.
Press the ENTER button.
The message “Scanning for USB... It may take up to 30 seconds.” is displayed.
The message “Upgrade version XXXX to version XXXX?
The system will be reset after upgrade.” is displayed.
Press the or to select the “OK”, then press the ENTER button
Insert a USB drive containing the firmware upgrade into the WISELINK port on the side of the TV.
Press the MENU button to display the menu.
Press the or button to select “Setup”, then press the ENTER button.
Press the or button to select “SW Upgrade”, then press the ENTER button.
Press the ENTER button.
The message “Scanning for USB... It may take up to 30 seconds.” is displayed.
The message “Upgrade version XXXX to version XXXX?
The system will be reset after upgrade.” is displayed.
Press the or to select the “OK”, then press the ENTER button
Please be careful to not disconnect the power
or remove the USB drive while upgrades are being applied. The TV will turn off and
turn on automatically after completing the firmware upgrade. Please check the
firmware version after the upgrades are complete. When software is upgraded,
video and audio settings you have made will return to their default (factory)
settings.
Its recommend write down the settings so that you can easily reset them after the upgrade.
Its recommend write down the settings so that you can easily reset them after the upgrade.
TROUBLESHOOTING
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 units appears to be dead.
The SMPS relay does not work when connecting the power cord.
The units appears to be dead.
CHECK POINTS
The IP 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 status inside the unit.
Check the fuses of each part.
Check the output voltage of SMPS.
Replace the Main Board.
Check the internal cable connection status inside the unit.
Check the fuses of each part.
Check the output voltage of SMPS.
Replace the Main Board.
Lamp(Backlight) Off, power indicator LED on?
> Check power cable. P/N: BN39-00702F
Does proper Stand-By DC STB5V appear at BD100?
Change the Main Power assembly BN44-00202A
Does proper Main DC B13V,B12V,B5V appear at
BD105L,C1261,BD101?
Does proper Inverter DC 120V appear at CN801
in IP?
Does proper DC STB3.3V appear at C101? > Check
IC105 Change the Main assembly BN94-01628C
Does proper DC D3.3V,B8V,CORE1.1V appear at
C108,C110,C137? > Check IC101,IC108,IC102 Change the Main assembly BN94-02077B
Does proper D1.8V,A2.5V,A1.2V appear at C115,
C111, C112? > Check IC104, IC106, IC107 Change the Main assembly BN94-02077B
No Video (Analog PC signal)
SYMPTOM
Audio is normal but no picture is displayed on
the screen.
CHECK POINTS
Check the PC source
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the PC source and check the connection
of DSUB? > Input an analog PC signal. Check the connected cable.
Does the signal appear at #AE18,#AE17,#AF16,#AC16,#AB17
(R, G, B, H, V) of IC400? > Check CN1000, PC cable. Change the PC cable.
Change the main PCB Assembly.
Does the digital data appear at output of
R721-R740,R788-R791? > Check IC400 Change
the main PCB assembly.
Does the digital data appear at output of
R1109, R1110, R1113P, R1114P, R1116P, R1120P, R1122-R1128, R1133, R1135, R1137P-R1141P,
R1143-R1150? > Check IC1101
Change the main PCB assembly
Change the main PCB assembly
No Video (HDMI - Digital Signal)
SYMPTOM
Audio is normal but no picture is displayed on
the screen.
CHECK POINTS
Check the HDMI source
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the HDMI source and check the connection
of HDMI cable? > Input an HDMI signal. Check the connected cable.
Does the signal appear at R1027, R1029, R1034,
R1036, R1040, R1042, R1063, R1065, R1067, R1069, R1071, R1073(DATA), R1020, R1023,
R1059, R1061(Clk+/-)? > Check JA1000,JA1002, HDMI cable. Change the HDMI
cable. Change the main PCB assembly.
Does the digital data appear at output of
R721-R740,R788-R791? > Check IC400 Change
the main PCB assembly
Does the digital data appear at output of
R1034-7, R1039, RA061-063, RA065, RA067, RA068? > Check IC1101 Change the main PCB assembly
No Video (Tuner_CVBS)
SYMPTOM
Audio is normal but no picture is displayed on
the screen.
CHECK POINTS
Check the Tuner CVBS source
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the RF source and check the connection
of RF cable? > Input the RF signal. Check the connected cable.
Does the signal appear at TU301? > Check
TU301 Change the main PCB assembly or tuner.
Does the digital data appear at output of
R721-R740, R788-R791? > Check IC400 Change the main PCB assembly.
Does the digital data appear at output of
R1109, R1110, R1113P, R1114P, R1116P, R1120P, R1122-R1128, R1133, R1135,
R1137P-R1141P, R1143-R1150? > Check
IC1101 Change the main PCB assembly.
No Video (Tuner DTV)
SYMPTOM
Audio is normal but no picture is displayed on
the screen.
CHECK POINTS
Check the DTV source
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the MT5382
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the RF source and check the connection
of RF cable? > Input the RF signal. Check the connected cable.
Does the digital data appear at output of
R721-R740,R788-R791? > Check IC400 Change the main PCB assembly
Does the digital data appear at output of
R1109, R1110, R1113P, R1114P, R1116P, R1120P, R1122-R1128, R1133, R1135,
R1137P-R1141P, R1143-R1150?> Check IC400
Change the main PCB assembly
Change the main PCB assembly
No Sound
SYMPTOM
Video is normal but there is no sound..
CHECK POINTS
When the speaker connectors are disconnected
or damaged.
When the sound processing part of the Main Board is not functioning.
Speaker defect..
When the sound processing part of the Main Board is not functioning.
Speaker defect..
Check component source and check the
connection of component cable? > Check IC400 or Side-AV. Change the main PCB
ass’y or side-AV assembly
Does the digital data appear at #27-#30 (Mclk,
Sclk, LRclk, data) of IC1203? > Check IC1203 Change the main PCB assembly.
Does the signal appear at L1201, L1202 (L/R
output)? > Check IC1203 Change the main PCB assembly
T-Con Board Problem
Symptom 1 : Abnormal Picture
Symptom 1 : Abnormal Picture
Symptom 2 : No Picture [No Display but the
BLU(Back Light Unit) is on]
It is easy to check if the BLU is on or off. If
you can see the light as above picture when you push the screen, the BLU is on.
