Aiwa HV-FX5100 Service Manual page 48

NO TUNER AUDIO (MONO)
Does audio appear
on E-E ?
Yes
Does AUDIO signal
appear at pin 38 of
IC6601 ?
Yes
Does AUDIO signal
appear at pins 1 and 2
of IC6601 ?
Yes
Does AUDIO signal
appear at pins 15 and 18
of IC5501 ?
Yes
Check J4501 and peripheral
circuit.
TROUBLESHOOTING GUIDE
No
No
No
No
E-25
Refer to section " NO E-E
AUDIO (MONO) ".
Check pin 21TU6001.
Replace IC6601.
Replace IC5501.