Download SERVICE MANUAL PLC

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