Charging Trouble - LG GM200 Service Manual

4. TROUBLE SHOOTING

4.5 Charging Trouble

TEST POINT
CN302
CIRCUIT
F B 3 0 1 1 8 0 0
H S O _ L
F B 3 0 2 1 8 0 0
H S O _ R
U S B D P
U S B D M
J A C K _ D E T E C T
R P W R O N
D S R _ D E T
R 3 0 5 4 7
( U A R T _ T x D ) U S C 2
R 3 0 6 4 7
( U A R T _ R x D ) U S C 1
LGE Internal Use Only
LGE Internal Use Only
C312
FB303,TP1
C H G _
C H G
2 V 9 3 _ V E X T
D 3 0 1
D N _ I I D O D E
V U S B N I
V C H G
F B 3 0 3
S F E Y 0 0 0 7 1 0 1
C I V F P 1 0 1 8 1 E 3 0 1 F R
R P W R O N
O U T N I
G N D 2 G N D 1
D S R
U A R T _ T X
U A R T _ R X
C 3 1 6
4 7 . u
R120 R123
TP2
O V
2 V 9 3 _ V E X T
V C H G
V U S B N I
R 1 0 7 R 1 0 8
1
D I N D I N
2
R 1 1 0 D I N
3
P P R
R 1 1 3 D I N
4
E O C
5
_ E N
6
R 1 1 7
C 1 3 7 C 1 3 8
5 1 . K
1 u 1 u
1 0 0 K
1 ( 6 0 ) 8
1 ( % )
F M _ A N T _ 1
C 3 0 3
1 0 0 p
C 3 0 4
L 3 0 2
2 7 p
_ 1 0 0 6 1 0 0 n H
V B A T
C N 3 0 2
2 1
1 9
1
2
2 : H e a d s t e M C I
3
4
4 : H S O _ L
5
5 : H S O _ R
6
6 : U S B +
7
7 : U S - B
8
8 : J A C K _ D
9
1 0 9 1 , 0 : B A T T
From Charger
1 1
1 1 : / R O N
1 2
1 3 1 2 1 , 3 : C H G
1 4
1 4 : D S R
1 5
1 5 : V U S B
1 6
1 6 : / D T X
1 7
1 7 : / D R X
1 8
2 0
2 2
F B 3 0 4
2 2 0
G U 0 4 1 1 - 8 P E - 1 0 0 0
E N R Y 0 0 0 6 8 0 1
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To main Battery
P C H A R G N I G C I
U 1 0 2 S I L 9 2 2 1
1 3
P G N D
V D C
1 2
V D C _ B Y P
V U S B
1 1
B A T
_ P P R
1 0
U S B _ B Y P
_ C H G
9
FB303,TP1
V I D C
TP1 TP1
_ E N
8
G N D
I M N I
7
U I S B
E U S Y 0 3 5 1 6 0 1
C 1 3 9 C 1 4 0
o h m I : m n i = 1 0 8 m A
1 u 1 u
1 ( % )
1 ( % )
C H G _ A B B
R 1 2 0
3 0 K
C H G _ D E T
R 1 2 3
3 0 K
TP2
Only for training and service purposes
R 1 1 4
1 0 K
U S B _ D E T
R 1 1 9
C 1 4 1
1 5 K
1 u