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V-FT450S
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NO NORMAL SOUND
Set volume to maximum. Is there
any sound output signal at pin 11 &
9 of IC301 ?
Check output
signal at pin 68,
69 of IC2100 and
its related circuit.
No sound from the
speaker.
No sound
comes out at
AV-out J905.
Check if there is
sound input signal
at pin 2 & 4 of
IC301.
NO
YES
Check connection
to the speaker.
NO
Check sound output
signal from pin 92 &
93 of IC2100 and its
related circuit.
