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Distorted audio and loud noise
Distorted audio and
loud noise
Yes
Check the power supply voltages
+12VB and refa to the operation
amplifying are normal.
Yes
Check
whether
mutingtransistorQ22,Q
24, and Q26are normal
Yes
Check
whether
muting
Q23,Q25 are normal
Yes
Checking the U9 leads the
feet has no to break to
open
Yes
if the clock signal AL, AR
output by U1 are normal
Yes
Check whether the U1 or
U19powersupply normal
Yes
Replace U1 or U9
No
the
No
the
No
transistor
No
3-7
Check R9and R117
Replace
Q22,Q24
Replace Q23,Q25
No
No
Replace U1
SACLK waveform
Check U9
Trouble shooting chart
and
Q26
SBCLK waveform SSLRCK waveform
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