Sound Problem - Daewoo L700C Service Manual

7. Sound Problem

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