TROUBLE SHOOTING GUIDE
E-4. COLOUR IN THE PLAYBACK MODE
Is the RF signal obtained NOTO PREAMP IN THE
from pin13 of IC401? PLAYBACK MODE
YES
Is the RF signal from pin13NO
Check Q401, adjacent
of IC401 fed to pin15 of
and PCB pattern
IC301?
YES
Is ON/OFF 5V supplied toNO
Check the ON/OFF 5V
pin36 and 47 of IC301?
YES
Is the colour signal fromNO
pin15 of IC301 fed to Check IC301
pin48 and 50 of IC301?
YES
Is the colour sinal fromNO
Check C351, C354, IC302
pin48 and 50 of IC301
and adjacent circuit
fed to pin13 of IC302?
YES
Is the colour signal from
NO
pin13 of IC302 fed toCheck Q304, C332, and
pin45 of IC301 through R317
pin52 and 46?
YES
Is the C.ROTARY suppliedNO
Check C.ROTARY
to pin66 of IC301?
YES
To output buffer circuit
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