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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.15.4 Loud speaker path (voice speaker phone)
Loud speaker path as below:
MSM62780 HPH_R, HPH_L
→
C208,C209
→
U201 (audio codec)
→
C237,C238
→
U209 (Audio
Syb system)
→
70 Pin BtoB Connector
→
FPCB pads for Left speaker, PAD of LCD Module for Right
speaker
Start
The sine wave appear at
C208,C209?
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Set phone with speaker phone mode
The sine wave appear at
C237, C238?
YES
Check the U201 or
Change the Main board
NO
Check the U209
and 70pin connector
NO
YES
YES
Can you hear the tone?
Change the speaker
or LCD Module
NO
YES
END
The sine wave appear at
pads of speaker?
2
C
N
X
R
1
B
P
X
R
2
A
1
E
N
I
L
2
E
N
I
L
1
A
1
C
I
M
1
C
2
D
N
1
C
I
M
N
I
C
A
3
A
P
O
C
A
3
B
DBVDD
H6
J7
DCVDD
H7
DGND
u
1
9
0
2
C
p
3
3
7
6
8
C
p
3
3
p
3
3
6
6
8
C
p
3
3
5
6
8
C
4
6
8
C
C213
1u
C204
0.1u
V
8
.
1
_
O
I
_
D
D
V
_
P
A
0
0
0
2
R
u
1
8
0
2
C
D
D
V
D
_
M
W
u
1
0
1
2
C
C203
0.1u
u
1
1
1
2
C
10u
C
202
N
1
C
I
M
_
M
W
P
1
C
I
M
_
M
W
P
X
R
_
M
W
N
X
R
_
M
W
R
_
H
P
H
_
M
W
L
_
H
P
H
_
M
W
A
D
S
3
B
S
A
I
B
V
VDD
D6
VSS
B5
N
D
H
S
_
2
E
6
B
1
A
N
I
3
E
4
E
2
A
N
I
1
B
N
I
5
E
2
B
N
I
5
D
4
B
1
C
N
I
2
C
N
I
5
C
+
L
T
U
O
1
C
1
E
-
L
T
U
O
4
F
+
R
T
U
O
-
R
T
U
O
2
F
6
C
X
R
T
U
O
D1
PGND1
PGND2
F3
PVDD
F1
2
D
L
C
S
2
C
N
1
C
4
A
P
1
C
2
A
B2
CL_H
CL_L
B1
3
A
D
N
G
P
C
1
A
D
D
V
P
C
CPVSS
A5
CR_H
F5
E6
CR_L
GND
F6
L
P
H
6
A
R
P
H
9
0
2
U
T
+
X
B
E
5
7
7
9
X
A
M
1
5
2
C
7
3
2
C
u
1
K
0
1
6
3
8
R
2.2u
C232
R843
2.2K
4
1
8
P
T
0
4
2
C
u
1
u
1
8
3
2
C
u
1
4
3
2
C
u
1
6
3
2
C
3
1
8
P
T
R
W
P
V
+
_
P
A
R
W
P
V
+
_
P
A
1
4
2
C
u
1
3
0
2
P
T
u
0
1
2.2K
R844
3
3
2
C
5
3
2
C
u
2
.
2
A
D
S
_
M
P
N
E
_
P
M
A
_
K
P
S
L
C
S
_
M
P
2
T
U
O
R
_
M
W
1
T
U
O
R
_
M
W
1
T
U
O
L
_
M
W
2
T
U
O
L
_
M
W
C237,C238
C208, C209
U201
Содержание KT610
Страница 1: ...Date June 2008 Issue 1 0 Service Manual Model KT610 Service Manual KT610 Internal Use Only ...
Страница 163: ... 164 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 175: ... 176 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
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Страница 233: ...Note ...
Страница 234: ...Note ...