TROUBLESHOOTING GUIDE
D-5
NO DIGITAL AUDIO ON
PLAYBACK OF COAXIAL JACK
Is there waveform at pin
6 of J7001 about 1Vp-p?
Check connection at RCA
Cable.
Is the voltage at 16 pin
of IC8504 about 3.3V?
Yes
When DVD Playback,
Is there waveform at pin
1 of IC8504?
No
Yes
Yes
No
No
Check AT+3.3V line on
POWER BLOCK.
Yes
Pin 9 and 10 of IC8504
is LOW?
No
Replace IC8504.
Check IC4001 and peripheral
circuit.
When CD Playback,
Is there waveform at pin
4 of IC8504?
Yes
Check IC4001 and peripheral
circuit.
No
Check IC2001 and peripheral
circuit.