Monday, October 12, 2015

SAMSUNG UA55C6900VF TROUBLE SHOOTING AND SERVICE MODE

SAMSUNG  UA55C6900VF

LED TV


TROUBLE SHOOTING AND SERVICE MODE 

TROUBLE SHOOTING  
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.
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.
No Video (Analog PC signal)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the PC sourceCheck the Arsenal, Check the Valencia.
 CN201 or IC201 SVC 
No Video (HDMI 1, 2, 3, 4 - Digital Signal)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the HDMI source.Check the HDMI switch, Check the Valencia.
 CN201 or IC201 SVC 
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 Tuner, Check the Valencia.
 CN201 or IC201 SVC 
No Video (Tuner DTV)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the DTV source.Check the Tuner, Check the Valencia.
CN201 or IC201 SVC 
No Video (Video CVBS 1, 2)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the Video CVBS sourceCheck the Valencia.
CN201 or IC201 SVC 
No Video (Component 1, 2)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the Component sourceCheck the Valencia.
CN3004, IC6001 SVC 
No Sound (1.Speaker 2.Monitor_out, 3.Optical)
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.

General Alignment instruction
1. Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync.
2. Use the specified test equipment or its equivalent.
3. Correct impedance matching is essential.
4. Avoid overload. Excessive signal from a sweep generator might overload the front-end of the TV. When inserting signal markers, do not allow the marker generator to distort test result.
5. Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate.
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts.
7. To protect against shock hazard, use an isolation transformer.
Factory Mode Adjustments
How to Enter to Factory Mode
To enter ‘Service Mode’ Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
INFO > MENU > MUTE > Power on- If you have Factory remote - control
PICTURE ON > INFO > FACTORY
- The buttons are active in the service mode.
1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0~9)
2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO(Enter)
How to Access Service Mode
Using the Customer Remote
1. Turn the power off and set to stand-by mode
2. Press the remote buttons in this order; POWER OFF - INFO - MENU - MUTE - POWER ON to turn the set on.
3. The set turns on and enters service mode. This may take approximately 20 seconds.
4. Press the Power button to exit and store data in memory.
- If you fail to enter service mode, repeat steps 1 and 2 above.
5. Initial SERVICE MODE DISPLAY State
Method of Color Calibration (AV)
1) Apply the NTSC Lattice (N0.2) pattern signal to the AV IN 1 port
2) Press the Source key to switch to “AV1” mode
3) Enter Service mode
4) Select the “ADC/WB” and “ADB” menu
5) Select the “AV Calibration” menu.
6) In “AV Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “AV Calibration” status from Failure to Success.
Method of Color Calibration (Component)
1) Apply the 720p Lattice (N0. 6) pattern signal to the Component IN 1 port
2) Press the Source key to switch to “Component1” mode
3) Enter Service mode
4) Select the “ADC/WB” and “ADB” menu
5) Select the “Comp Calibration” menu.
6) In “Comp Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “Comp Calibration” status from Failure to Success.
Method of Color Calibration (PC)
1) Apply the VESA XGA Lattice (N0. 21) pattern signal to the PC IN port
2) Press the Source key to switch to “PC” mode
3) Enter Service mode
4) Select the “ADC/WB” and “ADB” menu
5) Select the “PC Calibration” menu.
6) In “PC Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “PC Calibration” status from Failure to Success.
Method of Color Calibration (HDMI)
1) Apply the 720p Lattice (N0. 6) pattern signal to the HDMI1/DVI IN port
2) Press the Source key to switch to “HDMI1” mode
3) Enter Service mode
4) Select the “ADC/WB” and “ADB” menu
5) Select the “HDMI Calibration” menu.
6) In “HDMI Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “HDMI Calibration” status from Failure to Success.