TROUBLESHOOTING GUIDE
PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)
No
No
No
Yes
Yes
Is FM signal at pins 85
and 86 of IC4501 ?
Yes
Is FM signal at TP4502
more than 200mVp-p ?
Is VIDEO waveform at
pin 29 of IC4501 and are
there any noises ?
Check HEAD AMP and interchange
adjustments.
Check CP4501 and peripheral circuit.
Replace IC4501.
Check IC1201 and peripheral circuit.
E-9