Philips PL22.06 - Audio Signal Section Troubleshooting

8-4 PL22.06-A_TR
[Audio Signal Section]
SP3801, SP652, CL3801, or CL652 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, 2) of CN3801?
Replace the Digital Main CBA Unit.
No
Ye s
Is approximately +13V voltage supplied to cathode of
D655?
No
Ye s
Are the audio signals output to Pin(1, 2) of CN652?
Replace the Power Supply CBA.
No
Ye s
See FLOW CHART NO.6 <AMP+13V is not output.
[Power Supply Section]>