LG KP500 - Receiver & Speaker Trouble

5.6 Receiver & Speaker trouble
Check Points
- Speaker soldering status
- Audio amp & Analog switch soldering status
- 79 -
5. Trouble shooting
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Only for training and service purposes
A
UDI
O
A
M
P S
U
B
S
Y
ST
E
M & S
IG
N
A
L
D
I
ST
RI
B
U
T
O
R
D2
I
N
A1
D
1
INA
2
I
N
B1
C
2
I
N
B
2
C1
D
5
OUT+
O
UT-
B5
P
G
N
D
C
4
P
V
D
D
C
5
D4
R
X
IN
+
R
X
I
N
-
B
4
C3
S
C
L
B
3
SD
A
V
D
D
B
1
V
SS
A
3
U
2
0
0
M
A
X9
8
7
7
A
EWP
_
TG4
5
E
US
Y0
3
60
201
B
I
AS
B
2
A
4
C
1N
A
5
C
1P
G
N
D
D
3
A2
H
PL
A
1
HPR
IND
012
C
u1
1
0
2C
u1802
C
u
1702
C
2
.
8
0
02R
u
1
302
C
2
12
C
p
72
u
1
6
0
2C
u
1
9
0
2C
V
B
A
T
u1
112
C
u
2
.2
0
0
2C 2
02C
u2
.
2
VBAT
2.
8
1
0
2
R
p7
2
3
1
2
C
R
_
DN
S
_
B
B
P
_
V
C
R_
KPS
N_V
C
R_
K
P
S
L
_
DNS_MF
P_
RA
E
N
_
RA
E
L_
OS
H
R_
OS
H
L_
DNS_
B
B
R
_
DNS_MF
LC
S
_
C2
I
A
D
S_
C
2
I
U200
TP1
TP
2
TP3
TP
4
TP1
TP3
TP4
TP2
Receiver & Speaker
0
0
4
AV
1
04
C
p93
H
n00
1
3
04
L
5
0
4
C
p
22
1
0
4AV
CN40
0
24- 8000- 002-
0
00
-
8
2
9
ENEY000380
1
1
2
0
0
4L
H
n
0
0
1
p
2
2
4
0
4
C
N_V
C
R_
KPS
P
_
V
CR
_K
P
S