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TROUBLE SHOOTING GUIDE
NO PLAYBACK PICTURE
OF AV JACK
Check loader block.
Yes
No
No
Yes
Check CP2601
and peripheral circuit.
Check IC2601
and peripheral circuit.
No
Yes
Check IC8001
and peripheral circuit.
No
Yes
Change IC4001.
Is there a oltage
(beam current) at
TP40 and TP42?
Is there a signal at
pin 9,10,11 and 12
of IC2601?
Is there a signal at
pin 9,10,11 and 12
of IC2601?
Is there video signal
at pin 159 of IC4001?
NO AUDIO ON PLAYBACK
Is there AUDIO signal at
pin 9,10,11,12,13 and 14
of IC7302 ?
Yes
Check IC7302 and
peripheral circuit.
No
Change IC4001.