Toshiba SD-V280UA Service Manual page 89

DVD/CD ANLOG AUDIO DOES
NOT APPEAR
Is there audio
waveform at J8009?
YES
Is there audio
waveform at pin 3,5 of
IC8001?
NO
Is there audio waveform
at pin 1,14 of IC8504?
NO
Is there audio waveform
at pin 3,14 of IC8007?
NO
Is there audio
waveform at pin 3,5
of IC8004?
NO
Is there audio waveform
at pin 7,8 of IC8503?
NO
Change IC8503 or IC4001.
TROUBLESHOOTING GUIDE
NO
YES
YES
YES
YES
YES
Check PINS 7,8 of IC8503.
Check circuit around of J8001.
Check circuit around of IC8007.
E-35
Change IC8504.
Change IC8007.
Change IC8007.