LG GD330 - Page 75

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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
u0
1
62
2
C
p
72
04
2
C
u
1
.
0
9
2
2
C
0
02
L
H
n0
01
T
A
B
V
9
3
1
42C
p
72
H
n0
0
1
10
2
L
5
D
5
B
-
T
U
O
C4
PGND
C5
PVDD
+
N
IXR
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
AI
B
N1C
4
A
P1C
5
A
D3
GND
L
P
H
2
A
RPH
1A
1
A
NI
2
D
2
ANI
1
D
2
C
1
BNI
1
C
2
B
NI
+
T
U
O
5
4
G
T_
PW
E
A
77
89
X
A
M
0
02CI
8
2
2
C
u1
N_
V
CR_KP
S
P_
V
CR_KP
S
TP1
TP2