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NO PICTURE
Is the setting of
the BRIGHT center
and CONTRAST max?
YES
Is the voltage at
pin23,36,53 of
IC601 DC9V?
YES
Is the voltage at
pin2,13 of IC601
DC5V?
YES
Is VIDEO signal
output from pin55
of IC601?
YES
Is CHROMA signal
input from pin42,47
of IC601?
YES
Check IC601 and associated
circuit.
TROUBLESHOOTING GUIDE
NO
NO
NO
NO
Is VIDEO signal
NO
output from pin25
of IC701?
YES
Check Q702 and associated
circuit.
BRIGHT is adjusted to center,
CONTRAST is adjusted to max.
Check P.CON+9V Line.
Check CHROMA+5V Line.
Check IC601 and associated
circuit.
NO
Check IC701 and associated
circuit.
AV-20FD22
23
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