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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
^]VX[W
ʹΠΡΪΣΚΘΙΥ͑ι ͣͨ͑͡͡ͽ͑ͶΝΖΔΥΣΠΟΚΔΤ͑͟ͺΟΔ͑͑͟ͲΝΝ͑ΣΚΘΙΥ͑ΣΖΤΖΣΧΖΕ͑͟
ΟΝΪ͑ΗΠΣ͑ΥΣΒΚΟΚΟΘ͑ΒΟΕ͑ΤΖΣΧΚΔΖ͑ΡΦΣΡΠΤΖΤ
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
CIRCUIT
TROUBLESHOOTING
2.
VMIC
41
C
31
D
21
A
11
A
01
D
01
B
7
A
7
B
01
A
9
B
21
C
11
B
N
SL
P
SL
1
N
CI
M
1
P
CI
M
2
N
CI
M
2
P
CI
M
CI
M
U
V
CI
M
V
N
P
E
P
P
E
L
S
H
R
SL
P_
CI
M
N_
CI
M
N_
C
E
R
P_
C
E
R
P_
CI
M_
S
H
N_
CI
M_
S
H
T
U
O
R_
P
H
T
U
OL
_
P
H
N_
K
P
S
P_
K
P
S
VBAT
0.1uF
C217
DG2735DN-T1-E3
U201
EUSY0347001
6
5
7
4
8
3
9
2
10
1
V+
NO2
NO1
COM2
COM1
IN2
IN1
NC2
NC1
GND
DNI
R271
DNI
R272
REC_N
REC_P
REC_SPK_P
REC_SPK_N
REC_IN_P
REC_IN_N
REC_PATH_SEL
REC_PATH_SEL
0
R253
390p
C201
30K
R217
RF
05
1
X5
05
0
N
V
CI
VA204
TPA6202A1ZQVR
EUSY0404001
U204
B2
C1
A1
B1
B3
C2
A3
C3
IN-
VDD
IN+
VO+
_SHUTDOWN
VO-
BYPASS
GND
33n
C227
0
R254
39pF
C210
C211
39pF
R205
100Kohms
R_S_N
R_S_P
VBAT
0.22uF
C226
33n
C233
C228
39pF
30K
R240
10K
R218
R215
4.7ohms
4.7ohms
R216
C234
2.2uF
10K
R219
390p
C202
1n
L201
RF
05
1
X5
05
0
N
V
CI
VA203
L203
1n
SPK_AMP_EN
REC_SPK_P
REC_SPK_N
REC_IN_P
SPK_N
SPK_P
REC_IN_N
ECCH0005603
(2.2uF,10V,10%,X5R,1608)