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4.11 Microphone Trouble
TEST POINT
TP04 :
C114
TP03 :
C113
TP01 :
C107
CIRCUIT
U10
R12
MICN1
T12
MICP1
R13
MICN2
T13
MICP2
P12
VMIC
P13
VUMIC
R10
JACK_DETECT
ACD
P11
AGND
T10
VREF
A16
C110
VSSRF2
T16
220n
NC2
A1
VSSCORE4
T1
NC4
TP01
U102
LGE Internal Use Only
Figure 4.12
VMIC
VHSMIC
TP03
TP04
TP01
C107
C132
1n
1n
C117
C115
C113
C114
47p
47p
47p
47p
TP03
TP04
2. TROUBLE SHOOTING
U102
MICROPHONE
VMIC
MIC_N
TP0
MIC_P
HS_MIC_N
HS_MIC_P
C147
0.1u
MIC_P
TP06
C260
39p
TP02
TP06
C148
0.1u
MIC_N
TP05
C261
39p
MIC_GND
TP05
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Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
TP05 :
C148
TP06 :
C147
TP02 :
L205
MIC201
G4
6
PWR
5
G3
4
G2
3
G1
2
OUT
1
MIC201
C252
C254
VA209
VA208
C253
39p
39p
10u
REPLACE WITH BSE
VA215
Only for training and service purposes
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