TROUBLESHOOTING GUIDE
E-30
NO AUDIO ON PLAYBACK
Is there AUDIO signal at pin 7
and 8 of IC7301 ?
No
No
Check IC7301 and peripheral
circuit.
Yes
Yes
Check IC7304 and peripheral
circuit.
Is there waveform at pin
1 and 7 of IC7304 ?
Check VCR block
No
Check VCR block.
Yes
Check VCR block.
VIDEO CAN NOT
RECORD TO DVD
Is there a signal in at pin 17 and
19 of CP7301 and at pin 1 and
19 of CP7302 with each input ?
No
Yes
Check IC4009, DVD DECK
and peripheral circuit.
Is there a signal in at
pin 79, 98, 128 and 142 of
IC4001 ?
No
Yes
Check IC7302 and peripheral
circuit.
Is there a composite
signal in at pin 4 of
IC4009 ?
No
Yes
Check IC4001, DVD DECK
and peripheral circuit.
Is there a signal in at
pin 97, 107, 108, 117,
118 and 127 of IC4001 ?