Service manual

38
Is
Audio-in OK?
(pin 10, 14 at PC Source
and pin 9, 13 at AV
Source
No Sound
No
No
Yes
Yes
Is VDD(pin2)
of Audio IC(IC 601)
9V?
Check Audio-in
jack(CN 11).
Check speaker.
No
Yes
Is Audio-out
OK?
No
Is input of
9V regulator(IC 602)
12V?
Change 9V Regulator
(IC 602).
Check power board
Are SCL(pin 28),
SDA (pin 27)
OK?
Yes
Change Audio IC(IC601).
Yes
No
Check CA 602.
7. Sound Problem