Sanyo PLC-ET30L - No Sound

-80-
Troubleshooting
INPUT1 INPUT2 INPUT3
IC5001
AUDIO-SW
<NJW1141>
AV JOINT
MAIN
Q1363 Q1361
SPEAKER
SP901
L,R L,R L,R
1,30
10 21 13 14
4 1
2,29 3,28
AUDIO
OUT
L,R 9,22
Q5031
K40E K30A
Q5032
Q5041/Q5042
Q5151
Q5141
Q5042 Q5047
IC5121
AUDIO
OUT
<LM4889>
1 3
K8H
IC301
SCAN
CONVERTER
&
SYSTEM
CONTROL
<PW392>
SCL0_S5V
AUDIO_OUT_DET
SDA0_S5V
PW_SCL0
PW_SDA0
SCL0_S5V
SDA0_S5V
355 444 439
AUDIO
MUTE
MUTE
Mute On: H
33 34 73 74 71 72 37 38 41 42
K30B K8S
87 88 45 46 47 48 53 54 79 80
No Sound
(Check audio signal processing stage)
Check mute signal.
H; Mute on
Is audio signal
observed?
Check AUDIO_OUT_DET signal.
H; Mute on
Is audio signal
observed?