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LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
108/140
4. TROUBLE SHOOTING
TEST POINT
CIRCUIT
U100
U200
CN201
L201
C213
C214
.
VBAT
.
VDD_FMR
..
USW_DM
USW_DP
..
HSO_R
HSO_L
u
0
1
5
0
2
C
1
0
2
C
n
5
.
1
0
0
2
U
5
B
5
C
B
2
C
1
C
2
3
C
2
A
4
C
3
D
1
D
4
D
1
A
1
B
3
A
4
B
3
B
5
A
4
A
5
D
2
D
T
A
B
B
V
1
N
D
2
P
D
1
U
D
I
U
2
U
S
E
R
C
I
M
1
D
U
A
P
A
C
2
D
U
A
D
N
G
T
E
S
I
C
I
SC
L
SD
A
IN
T
1
N
M
O
C
2
P
M
O
C
7
4
3
1
2
R
4
1
2
R
7
4
10
K
R
21
5
D
D
V
_
1
8
V
1
10
00
0
0
2
B
F
1
0
2
B
F
10
00
0
0
2
C
n
5
.
1
n
5
.
1
5
1
2
C
2.
2K
R
21
6
D
D
V
_
1
8
V
1
u
2
.
2
2
0
2
C
B
S
U
_
S
U
B
V
D
N
I
R
24
2
7
1
2
R
K
2
.
2
18
00
2
0
2
B
F
u
2
.
2
4
0
2
C
R
21
8
2.
2K
p
7
2
6
0
2
C
7
0
2
C
p
7
2
p
9
3
8
0
2
C
22
n
C
20
9
p
0
2
1
0
1
2
C
C
21
1
22
n
T
A
B
V
u
1
3
0
2
C
P
D
_
B
S
U
M
D
_
B
S
U
T
N
I
_
W
S
U
L
C
S
_
C
2
I
A
D
S
_
C
2
I
X
R
_
T
R
A
U
X
T
_
T
R
A
U
L
_
O
S
H
D
I
_
W
S
U
P
_
C
I
M
_
S
H
N
_
C
I
M
_
S
H
R
_
O
S
H
M
D
_
W
S
U
P
D
_
W
S
U
C
I
U
M
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
108/140
4. TROUBLE SHOOTING
TEST POINT
CIRCUIT
U100
U200
CN201
L201
C213
C214
.
VBAT
.
VDD_FMR
..
USW_DM
USW_DP
..
HSO_R
HSO_L