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TROUBLESHOOTING GUIDE
Is FM signal at pin6 of
IC1002 more than 1V ?
PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)
No
Yes
No
Yes
Check CYLINDER UNIT.
Is FM signal at pin 79
of IC4001 270mVp-p ?
No
Yes
Is VIDEO output at the
emitter of Q4802 2Vp-p,
and are there any noises ?
Replace J4501.
Check IC4001 and Q4802.
E-15
Perform the interchangeable
adjustment of DECK.