Advertisement
AV-20FD24
GOOD PICTURE BUT NO SOUND
Is CD301 and CD302
inserted?
Yes
Is the voltage at pin 10
of IC351 DC 21.5V ?
Yes
Is the voltage at pin 11
of IC351 DC 10.3V ?
Yes
Is the voltage at pin 8
of IC351 LESS than DC
2.0V ?
Yes
Is the AUDIO OUT
signal at pins 7 and 11 of
IC301?
Yes
Check IC301, speaker and
Earphone jack.
32
No
No
No
No
No
No. 52133
Insert CD301 and CD302.
Check Sound+B line and
peripheral circuit.
Check P.CON+12V line and
peripheral circuit.
Check IC101 and peripheral circuit.
Check A_OUT_L, A_OUT_R line
and peripheral circuit.
Advertisement
