Sony TA-ZH1ES Service Manual page 30

TA-ZH1ES
3-3. No sound from COAX IN and OPT IN input
In advance to check the following two points.
• Using sound source of the support sampling frequencies of up to 192 kHz for COAX IN, and up to 96 kHz for OPT IN.
• Cannot decode multi-channel signals such as Dolby Digital or DTS.
No sound from COAX IN and OPT IN input.
Yes
The condition does not change even after
connecting the new POWER SUPPLY
board to the DIGITAL board.
Yes
No problems with the surroundings of
IC400 and the jack (J400) on the DIGITAL
board.
Yes
No problems with the surroundings of
IC401, IC402, IC403, IC405 on the
DIGITAL board.
Yes
Sound is outputted from COAX IN and
OPT IN input.
Yes
End
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No
Replace the POWER SUPPLY board to
new board.
Replace the parts around IC400 and the
No
jack (J400) on the DIGITAL board to new
parts.
Replace the parts around IC401, IC402,
No
IC403, IC405 on the DIGITAL board to new
parts.
No
Replace the DIGITAL board to new board.
Yes
Yes
Yes
Yes