LG gd350 Service Manual page 83

4. TROUBLE SHOOTING
CIRCUIT
B T O B
1 V 8 1 _ V D D
F I _ M O
F
1
L C D _ D A T A 0 0
N I
2
L C D _ D A T A 0 1
N I
3
L C D _ D A T A 0 2
N I
4
L C D _ D A T A 0 3
N I
1 5 p F
F
1
L C D _ D A T A 0 4
N I
2
L C D _ D A T A 0 5
N I
3
L C D _ D A T A 0 6
N I
4
L C D _ D A T A 0 7
N I
1 5 p F
F
1
L C D _ V S Y N C
N I
2
n L C D _ C S
N I
3
L C D _ R S
N I
4
n L C D _ W R
N I
1 5 p F
C
M L E
M L E
M L E
LGE Internal Use Only
V A U X
1 V 8 1 _ V D D
F O L D E R
D 2 0 7
L C D _ D I
D 2 0 6
D E 1
F I _ M O D E 1
L 2 0 4
9
O U T _ A 1 N I O U T _ B 1
8
O U T _ A 2 N I O U T _ B 2
7
O U T _ A 3 N I O U T _ B 3
6
O U T _ A 4 N I O U T _ B 4
L 2 0 5
9
O U T _ A 1 N I O U T _ B 1
8
O U T _ A 2 N I O U T _ B 2
7
O U T _ A 3 N I O U T _ B 3
6
O U T _ A 4 N I O U T _ B 4
L 2 0 6
9
O U T _ A 1 N I O U T _ B 1
8
O U T _ A 2 N I O U T _ B 2
7
O U T _ A 3 N I O U T _ B 3
6
O U T _ A 4 N I O U T _ B 4
D 2 0 5
1 u 1 u
C 2 5 2 C 2 5 1
H A R G E P U M P
1 u
C 2 4 0
1
C - 2
2
P G N D
3
N C 1
4
D 1
B L 1
5
D 2
B L 2
D 3
D 2 0 1 D 2 0 2 D 2 0 3
4. TROUBLE SHOOTING
V B A C K U P
V B A T
C N 2 0 3
G 1 G 2
1 4 4
2 4 3
3
4 4 1
5 4 0
6 3 9
7 3 8
8 3 7
9 3 6
1 0 3 5
1 1 3 4
1 2 3 3
1 3 3 2
1 4 3 1
1 5 3 0
1 6 2 9
1 7 2 8
1 8 2 7
1 9 2 6
2 0 2 5
2 1 2 4
2 2 2 3
G 3 G 4
1 u
C 2 5 0
V B A T
2
M L E D
C 2 4 2
4 7 . u
1 5
L D O 1
U 2 0 3
1 4
L D O 2
1 3
B Y P
1 2
N C 3
1 1
S W F I
C 2 4 3
2 2 n
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Copyright © 2010 LG Electronics. Inc. All right reserved.
M O T O R _ N
M O T O R _ P
D 2 0 8
M L E D
M L E D 1
M L E D 2
M L E D 3
R C V _ S P K
C 2 5 4
2 7 p
R C V _ S P K
n L E D _ R E S E T
L D O _ C N T
V A 2 3 0 V A 2 3 1
2 I C _ S D A
2 I C _ S C L
R 2 3 8
n L C D _ R E S E T
1 0 0
D 2 0 4
V 8 _ V C A M 1 V 8 _ V C A M
C 2 4 4
C 2 4 5
2 2 . u
2 2 . u
S W F I
Only for training and service purposes
_ P
_ N