40
TV-13142
TV-13142W
TROUBLESHOOTING GUIDE
PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)
Yes
No
Is FM signal at TP4001
more than 250mVp-p ?
Check IC1004, CYLINDER UNIT and
IC4001.
No
Yes
Replace IC4001.
Is VIDEO waveform at pin
26 of IC4001 2V, and are
there any noises ?
Check CHROMA BLOCK.
No
Yes
No
Check J701 and VIDEO input
circuit.
NO COLOR DURING SELF
RECORDING AND PLAYBACK
Replace IC4001.
Check IC4001 and peripheral circuit.
Does VIDEO signal
appear at pins 28 and
32 of IC4001?
Does CHROMA
signal at TP4001
during recording?