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4. Troubleshooting
4-1-6. No Video (Component)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the Component source
-
Major
Check the A1B
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Caution
Make sure to disconnect the power before working on the IP board.
9
Diagnostics
5
4-14
Power Indicator is off.
Lamp(Backlight) Off, no video
Yes
Check component source and
check the connection of
component cable ?
Yes
Does the signal appear at R248, R249,
R250 (Comp) (Y, Pb, Pr)?
Yes
Does the digital data appear at
RA605, RA606, RA646, RA647(Rout)
RA603, RA604, RA633, RA634(Gout)
RA601, RA602, RA631, RA632(Bout)?
Yes
Does the digital data appear at output
of R1308 ~R1321, R1323~R1336?
Yes
Does the digital data appear at output
of FLB_CLKA/B, FLF_CLKA/B,
FRB_CLKA/B, FRF_CLKA/B,
BLB_CLKA/B, BLF_CLKA/B,BRB_
CLKA/B, BRF_CLKA/B
(On FRCM Board)?
Yes
Check the LVDS cable?
Replace the LCD panel?
Input a component signal.
No
Check the connected cable.
No
Check CN201
Change the main PCB ass'y
No
Change the main PCB assembly
No
Check IC1001
Change the main PCB assembly
No
Change the FRCM Board assembly
No
Please, contact Tech support
Check IC601
Check IC7
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