Service manual

TROUBLESHOOTING GUIDE
E-12
YES
NO
PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)
Is noisy a wave of video
signal at pin 26 of IC101?
Check CYLINDER.
YES
NO
Is noisy a wave of video
signal at pin 7 of IC8006 ?
Change IC8006.
YES
NO
Is noisy a wave of video
signal at pin 16, 17 of
IC3001 ?
Check IC8006
and peripheral circuit.
YES
NO
Is noisy a wave of video
signal at pin 19 of IC3001 ?
Change IC3001.
Check J8001
and peripheral circuit.