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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
IC200 is broken.
Replace the IC200.
NO
Play the Ring tone.
Check the output
(TP1, TP2) of IC200
The signal is a Analog
YES
1
2 (Next page)
<Fig.> OUTPUT of IC200
TP1
TP2
IC200
TP1
TP2
u
0
1
6
2
2
C
p
7
2
0
4
2
C
u
1
.
0
9
2
2
C
0
0
2
L
H
n
0
0
1
T
A
B
V
9
3
1
4
2
C
p
7
2
H
n
0
0
1
1
0
2
L
5
D
5
B
-
T
U
O
C4
PGND
C5
PVDD
+
N
I
X
R
4
D
4
B
-
N
I
X
R
L
C
S
3
C
A
D
S
3
B
B1
VDD
A3
VSS
2
B
S
A
I
B
N
1
C
4
A
P
1
C
5
A
D3
GND
L
P
H
2
A
R
P
H
1
A
1
A
N
I
2
D
2
A
N
I
1
D
2
C
1
B
N
I
1
C
2
B
N
I
+
T
U
O
5
4
G
T
_
P
W
E
A
7
7
8
9
X
A
M
0
0
2
C
I
8
2
2
C
u
1
N
_
V
C
R
_
K
P
S
P
_
V
C
R
_
K
P
S
TP1
TP2
Содержание GD330
Страница 1: ...Service Manual Model GD330 Internal Use Only Service Manual GD330 Date April 2009 Issue 1 0 ...
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