8-5 FL11.4ATR
[Audio Signal Section]
SP3801, SP3802, CL3801 or CL3802 may be
defective. Check and replace these parts.
Audio is not outputted normally.
FLOW CHART NO.1
Are the audio signals outputted to Pin(1) of CN
3801
and Pin(1) of CN3802?
Replace Digital Main CBA Unit.
No
Ye s
Is approximately +24V voltage supplied to Pin(13, 14)
of CN632?
Is
approximately +
24V voltage supplied to Pin(16, 17) of
CN632?
No
No
Ye s
Is approximately +5.7V voltage supplied to Pin(11) of
CN632?
See FLO
W CHART NO
.9 <AL+5V is not output.
[Power Supply Section]>
See FLO
W CHART NO
.5 <P-ON+24V is not output.
[Power Supply Section]>
See FLO
W CHART NO
.8 <AMP+24V is not output.
[Power Supply Section]>
No
Ye s
Ye s
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