LG GD350, Service Manual

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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
ͽ͸Ͷ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑΀ΟΝΪ
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4. TROUBLE SHOOTING
TEST POINT
CIRCUIT
Figure 4.11
U202
U200
FB200 FB201
C223
C225
2 0 2 U
E4 D
4
D
3
C
4
A
2
2 E 3 B
2 B
1 A
3 C
3 E
2 C
2 D 1 C
3 A 1 D
4 A 1 E
B
4
B
1
VD
D
LS
VD
D
+ M N I + T U O S L
- M N I - T U O S L
L N I T E S
R N I
L P H
S S A P Y B
D D V C 2 I
A D S
L C S R P H
G
N
D
C
PV
SS
C
1N
C
1P
C
PG
N
D
C
22
3
1u
22
0n
C
22
4
1u C
22
5
C
22
6
22
0n
7 2 2 C
p 9 3 p 9 3
8 2 2 C
C
23
1
2.
2u
2 3 2 C
u 1 . 0
3 3 2 C
u 2 . 2 u 2 . 2
4 3 2 C
u 1 . 0
5 3 2 C
D D V _ 1 8 V 1
T A B V
u 1
6 3 2 C
u 7 . 4
7 3 2 C
R
23
2
10
0K
u 1 . 0
8 3 2 C
L C S _ C 2 I
A D S _ C 2 I
L _ O S H
R _ O S H
L _ S H
N _ V C R
P _ V C R
N _ K P S _ V C R
P _ K P S _ V C R
R _ S H
P M A O I D U A 4 1 R
6 1 M
5 1 M
N P E
P P E
N _ V C R
P _ V C R
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
10
00
0 0 2 B F
1 0 2 B F
10
00
0 0 2 C
n 5 . 1
u 2 . 2
2 0 2 C
P D _ B S U
M D _ B S U
X R _ T R A U
X T _ T R A U
L _ O S H
R _ O S H