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Does not the sound go out though the picture has come out when UHF/VHF is received?
MAIN UNIT:
Is the IF signal output from pin (8) and pin (9) of
TUNER(TU7001)?
YES
Is the IF signal sent to pin (AD19) and pin (AE19) of
IC U107?
YES
Refer to "No sound output in all modes"
No sound (during the reception of TV broadcasting)
.
NO
Check the tuner and its peripheral circuits. Replace
as required.
NO
Check the peripheral circuits between TU7001 &
U107.
25
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