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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
LGE Internal Use Only
4.5 Charging Trouble
TEST POINT
FB303,TP1
C312
CN302
R120
R123
U102
CIRCUIT
TP2
)
%
1
(
13Kohm - Charging current : 524mA (080924_kwp)
)
%
1
(
C
I
G
N
I
G
R
A
H
C
P
V
O
A
m
8
0
1
=
n
i
m
I
:
m
h
o
K
1
.
5
)
8
0
6
1
(
)
%
1
(
u
1
0
4
1
C
I
N
D
7
0
1
R
VBAT
3
1
D
N
G
P
0
1
P
Y
B
_
B
S
U
C
D
V
1
P
Y
B
_
C
D
V
2
1
2
B
S
U
V
G
H
C
_
4
N
E
_
5
3
R
P
P
_
1
0
6
1
5
3
0
Y
S
U
E
1
2
2
9
L
S
I
2
0
1
U
T
A
B
1
1
8
D
N
G
6
N
I
M
I
B
S
U
I
7
C
D
V
I
9
8
0
1
R
I
N
D
R118
20K
9
3
1
C
u
1
T
X
E
V
_
3
9
V
2
CHG_ABB
N
I
B
S
U
V
K
0
0
1
7
1
1
R
I
N
D
3
1
1
R
R116
11K
VBUS_USB
8
3
1
C
u
1
u
1
7
3
1
C
u
1
1
4
1
C
K
0
1
4
1
1
R
I
N
D
0
1
1
R
R115
5.1K
9
1
1
R
K
5
1
G
H
C
V
T
E
D
_
B
S
U
C
O
E
R
P
P
_
G
H
C
N
E
_
G
H
C
+
B
S
U
:
6
)
D
x
T
_
T
R
A
U
(
X
R
/
D
:
7
1
X
T
/
D
:
6
1
N
O
/
R
:
1
1
T
T
A
B
:
0
1
,
9
C
I
M
t
e
s
d
a
e
H
:
2
)
D
x
R
_
T
R
A
U
(
B
S
U
V
:
5
1
D
_
K
C
A
J
:
8
R
_
O
S
H
:
5
-
B
S
U
:
7
L
_
O
S
H
:
4
R
S
D
:
4
1
(25V)
G
H
C
:
3
1
,
2
1
p
0
0
1
3
0
3
C
6
1
3
C
u
7
.
4
N
O
R
W
P
R
X
R
_
T
R
A
U
2
2
3
4
5
6
7
8
9
2
0
3
N
C
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
1
2
0
2
1
2
0
0
0
1
E
-
P
8
1
-
1
4
0
U
G
1
0
8
6
0
0
0
Y
R
N
E
p
7
2
0
0
8
1
2
0
3
B
F
4
0
3
C
R
S
D
G
H
C
V
2
0
3
L
H
n
0
0
1
7
4
6
0
3
R
7
4
5
0
3
R
T
X
E
V
_
3
9
V
2
1u
C308
10K
0
0
8
1
1
0
3
B
F
R302
C332
D
NI
C314
1
u
T
U
O
10K
R301
1
0
1
7
0
0
0
Y
E
F
S
3
0
3
B
F
R
F
1
0
3
E
1
8
1
0
1
P
F
V
C
I
1
D
N
G
2
D
N
G
N
I
N
I
B
S
U
V
6
0
0
1
_
E
D
O
I
D
_
I
N
D
1
0
3
D
4
0
3
B
F
0
2
2
39p
C312
C313
39p
X
T
_
T
R
A
U
R303
10K
T
A
B
V
R
_
O
S
H
L
_
O
S
H
P
D
B
S
U
1
C
S
U
T
E
D
_
R
S
D
T
C
E
T
E
D
_
K
C
A
J
2
C
S
U
N
O
R
W
P
R
1
_
T
N
A
_
M
F
M
D
B
S
U
B
B
A
_
G
H
C
K
0
3
0
2
1
R
3
2
1
R
K
0
3
T
E
D
_
G
H
C
To
main
Battery
From
Charger
TP1
TP1
FB303,TP1
TP2