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ELECTRICAL TROUBLESHOOTING GUIDE
5. NO CVBS VIDEO OUTPUT
No CVBS video on Display.
Check JK251 and RCA cable connection.
Is there CVBS signal on L2V1? Check IC501’s VCC or replace IC501.
NO
YES
YES
6. NO AUDIO OUTPUT
BD/CD/DVD disc or USB play.
YES
6A
Replace AMP PCB
CN401 pin11, 12, 15
signal OK?
R623, R624 signal OK?
CN600 pin24, 22, 18, 17,
16 signal OK?
IC700 pin35, 39
signal OK?
Check IC501’s I2S output
trace.
Check IC602’s I2S output
trace.
Check IC101’s signal trace.
Check IC700 or replace
IC700, IC701.
NO
NO
NO
NO
YES
YES
YES
YES
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