Receiver & Speaker Trouble - LG KP500 Service Manual

5.6 Receiver & Speaker trouble
Check Points
- Speaker soldering status
- Audio amp & Analog switch soldering status
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
TP1
B _ B N S D
B _ B N S D
F _ M N S D
F _ M N S D
TP2
2 I _ C D S
I C 2 S _ L C
E R A
E R A
S K P R _ V C
S K P R _ V C
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Only for training and service purposes
2 C 0 0 2 C 1 0
. 2 u 2 u 1
2 C 3 0
A4
C1N
u 1
A5
C1P
2 C 6 0 u 1
D1 U200
R _ INA2
2 C 7 0 u 1
D2
MAX9877AEWP_TG45
L _ INA1
EUSY0360201
2 C 8 0 u 1
C1
R _ INB2
2 C 9 0 u 1
C2
L _ INB1
B2
BIAS
B3
A SDA
C3
SCL
2 R 0 0 8 2 .
D4
P _ RXIN+
2 R 1 0 8 2 .
B4
N _ RXIN-
2 C 1 1
u 1
Receiver & Speaker
4 L
N _
1
4 C 1 0
3 p 9
4 L
P _
1
V 4 A 0 0 V 4 A 1 0
4 C 4 0 4 C 5 0
2 p 2 2 p 2
TP1
TP2
TP3
TP4
VBAT VBAT
2 C 2 0
. 2 u 2
A1
HPR
A2
HPL
TP3
D5
OUT+
B5
OUT-
2 C 2 1 2 C 3 1
2 p 7 2 p 7
0 0
CN400
0 0 H n
2
3 0
1
0 0 H n
24- 8000- 002- 000- 829
ENEY0003801
- 79 -
5. Trouble shooting
H S O R _
H S O L _
S K P R _ V C P _
2 C 0 1
D I N
S K P R _ V C N _
TP4
U200
LGE Internal Use Only