No Monitor image <AV-OUT>
YES
NO
Is the video signal sent from
pin (4) of IC1301 (AV
switch)?
YES
Check lines and devices
between pin (41) of IC1301 and
monitor image output pin (20)
(J1101).
(Q1403 and Q1113)
Check IC1301 and its
peripheral circuits.
No monitor image <S-OUT>
YES
NO
Are Y and C signals sent from
pins (39) and (37) of IC1301
(AV switch) respectively?
YES
Check lines and devices
between pins (39), (37) of
IC1301 and monitor S-OUT
pins (3), (4) (SC1102).
(Q1401-2)
Check that input signal is
S-INPUT.
NO
Check IC1301 and its
peripheral circuits
No image (7)
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