JVC KD-SX841R Service Manual page 25

QQ
3.2.5 Signal processing section 3 7 63 1515 0
Is the sound output from
both channels (L, R)?
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NO
YES
Normal
Is 9V present at IC101 pin
(including sampling output
components) output to
IC521 pins ^and | during
Is the audio signal output
and7during playback?
Check the muting circuit.
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y
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8
NO
No sound from either
channel.
YES
NO
(8)?
YES
Is the audio signal
NO
YES
NO
at IC101 pins 1
YES
Q Q
3 6 7 1 3
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2 9 9 4 2 8
Compare the L-ch and R-ch
to locate the defective point.
YES
Check the vicinity of the
Q981 audio power supply.
Check IC521 and its
peripheral circuits
Check IC101 and its
peripheral circuits
1 5 0 5 8 2 9 9 4
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co
KD-SX841R
9 9
2 8 9 9
(No.49790)1-25