8-4
PL12.0ATR
[Audio Signal Section]
SP3801, SP3802 or CL3801 may be defective.
Check and replace these parts.
Audio is not output normally.
FLOW CHART NO.1
Are the audio signals output to Pin(1, 4) of CN3801?
Replace Digital Main CBA Unit.
No
Yes
Is approxi13V voltage supplied to Pin(10, 11)
of CN631?
Is approxi3.3V voltage supplied to Pin(13) of
CN631?
No
No
Yes
See FLOW CHART NO.7 <AL+3.3V is not output.
[Power Supply Section]>
See FLOW CHART NO.6 <AMP+13V is not output.
[Power Supply Section]>
Yes
