JVC CH-X1500 Service Manual page 28

CH-X1500
3.3.6 Signal processing section
Is the sound output from
both channels (L, R)?
YES
Normal
1-28
NO
No sound from either
channel.
YES
Is 9V present at IC101 pin
(8)?
YES
Is the audio signal
(including sampling output
components) output to
IC521 pins ^and | during
YES
Is the audio signal output
at IC101 pins 1
and7during playback?
YES
Check the muting circuit.
NO
Compare the L-ch and
R-ch to locate the
defective point.
NO
Check the vicinity of the
Q981 audio power
supply.
NO
Check IC521 and its
peripheral circuits.
NO Check IC101 and its
peripheral circuits