FUNAI DRVR-B778S - Page 34

1-11-10 E9G01TR
IC1513 1PIN AUDIO (L)-OUT
IC1513 7PIN AUDIO (R)-OUT
IC1513 2PIN AUDIO (L)-OUT
IC1513 6PIN AUDIO (R)-OUT
Check the periphery between Pin(21,25) of IC1518
and the audio terminal (JK1502), and service it if
defective.
Check each line between each pin of CN1502
and each pin of IC1513, and service it if defective.
CN1502 17PIN → IC1513 2PIN AUDIO(L)-OUT
CN1502 15PIN → IC1513 6PIN AUDIO(R)-OUT
Are the analog audio signals inputted to each pin
of IC1513?
Are the analog audio signals outputted to each pin
of IC1513?
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the audio
terminal (JK1502)?
Are the audio signals outputted to the audio
terminal (JK2001)?
Are the audio signals outputted to the audio
terminal (JK1505)?
Ye s
Ye s
Ye s
No
IC1508 1PIN AUDIO (L)-OUT
IC1508 13PIN AUDIO (R)-OUT
Check each line between each pin of IC1513
and each pin of IC1508, and service it if defective.
IC1513 1PIN → IC1508 1PIN AUDIO(L)-OUT
IC1513 7PIN → IC1508 13PIN AUDIO(R)-OUT
Are the analog audio signals inputted to each pin
of IC1508?
Ye s
No
Check each line between each pin of IC1508
and each pin of IC1518, and service it if defective.
IC1508 15PIN → IC1518 6PIN AUDIO(L)-OUT
IC1508 14PIN → IC1518 12PIN AUDIO(R)-OUT
No
IC1518 21,25PIN AUDIO-OUT 1 (AV1)
IC1518 22,26PIN AUDIO-OUT 2 (AV2)
Are the analog audio signals outputted to each pin
of IC1518?
Ye s
No
No
No
No
Check the periphery between Pin(22,26) of IC1518
and the audio terminal (JK2001), and service it if
defective.
No
Check the periphery between Pin(1,7) of IC1513
and the audio terminal (JK1505), and service it if
defective.
No
Do Pin(26,29) of IC501 become "H" level?
If Pin(26) of IC501 become "L" level, replace
DVD MECHANISM & DVD MAIN CBA ASSEMBLY.
If Pin(29) of IC501 become "L" level, replace
IC501.
"C"
Check the AL+12V(1) line and
service it if defective.
Replace IC1518.
Ye s
No
Is 12V voltage supplied to Pin(2,4) of IC1518?
Check the P-ON+10V line and
service it if defective.
Replace IC1513.
Ye s N o
Is 10V voltage supplied to Pin(8) of IC1513?
IC1508 15PIN AUDIO (L)-OUT
IC1508 14PIN AUDIO (R)-OUT
Are the analog audio signals outputted to each pin
of IC1508?
Ye s
IC1518 6PIN AUDIO (L)-OUT
IC1518 12PIN AUDIO (R)-OUT
Are the analog audio signals inputted to each pin
of IC1518?
Ye s
No
Check the AL+5V(1) and
AL-5V line, and service it if
defective.
Replace IC1508.
Ye s N o
Is 5V voltage supplied to Pin(16) of IC1508?
Is -5V voltage supplied to Pin(7) of IC1508?