KLV-52X200A, KLV-52X250A - Sony TV Service Manual (repair manual). Page 18

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KLV-52X200A/
52X250A
 (GA)     2-6
Here is trouble shooting flow related Video
5. Video Problem
5. Video Problem
Video 
problem
All inputs 
have 
problem?
YES
NO
Analog 
Channel 
Problem
Digital 
Channel 
Problem? 
HDMI 
Problem
Check
LVDS harness 
(B2 and Panel)
G2/D4/D5 boards
B2 board
Panel
NO
NO
Check
B2 board
Check
TUG board
AG board
B2 board
Check
B2 board 
AG board
YES
YES
YES
NO
Check
B2 board
AG board
Back Light 
Blinks?
NO
Check
LVDS harness 
(B2 and Panel)
B2 board
Panel
YES
2-2. DIAGNOSIS MODE
Method of start/end
Method of start/end
Start
Start
It starts with 
It starts with 
Sircs
Sircs
Command(<Off> 
Command(<Off> 
-
-
> <Display> 
> <Display> 
-
-
> <5> 
> <5> 
-
-
> <
> <
vol
vol
-
-
-
-
> <On>). 
> <On>). 
End
End
It ends by the remote control OFF. 
It ends by the remote control OFF. 
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