4-3
4. Troubleshooting
4-1-2. No Video (Analog PC signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the PC source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
LA22B480Q1
LA26B480Q1, LA32B480Q1
No
PC cable. Change a PC
cable. Change a main PCB ass’y.
No
Does the digital data appear at the
output of LVDS Cable?
Power Indicator is off.
Lamp on, no video.
No
Check a PC source and check
the connection of DSUB cable?
Check a IC6003.
Change a main PCB ass’y
Yes
Check a LVDS cable?
Replace a lcd panel?
Does the signal appear at C6008(R),
C6007, C6006 (R,G,B) of IC6003?
Please, Call to Samsung Co. LTD.
Yes
Yes
Input a analog PC signal and
connected cable(DPMS).
Yes
1
Yes
2
3
Caution
Make sure to disconnect the power before working on the IP board.
www.freeservicemanuals.info
12/9/2016
Published in Heiloo, Holland
Summary of Contents for LA22B480Q1
Page 89: ...1 4 1 Precautions Memo www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...
Page 126: ...6 3 6 Wiring Diagram www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...
Page 127: ...6 4 6 Wiring Diagram www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...