Aiwa HV-FX7800 Service Manual page 66

ELECTRICAL TROUBLESHOOTING -14/17
(2) No sound (Mono Model Only)
Check the Vcc of IC301 Pin 75.
Check the Tuner Audio signal
at IC301 Pin 76.
Check the Audio signal at IC301 Pin 96.
Check the signal flow from IC301
pin 96 to IC901 Pin 6.
No sound
YES
YES
YES
YES
NO
Check 5VT power.
NO
Chekc the signal flow from TU701
Pin21 to IC301 Pin 76.
NO
Replace IC301.
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