LG KG920 - Microphone Trouble

4. TROUBLE SHOOTING
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4.16 Microphone Trouble
Figure 4-93.
Figure 4-94.
Connect to
CN101(Key)
Connect to
CN700
MIC1(Key)
CN101(Key)
CN700
U100
MIC
Components
CLOSE TO AD6535
C141
39p
NC_R12
R12
AIN1N
P16
AIN1P
AIN2N
R15
AIN2P
P15
AIN3L
R13
R14
AIN3R
R16
39p
C139
39p
C142
C140
39p
MIC_IN-
MIC_IN+
AUX_MIC_N
AUX_MIC_P
MAIN MICROPHONE
C416
39p
2.2K
R427
100
R422
39p
C420
R417
1K
2V5_VMIC
C423 0.1u
C413
39p
10u
C421
R426
100
C425
39p
2.2K
R420
0
R423
39p
C426
MIC_IN+
MIC_IN-
MIC_P
MIC_N
VA102
EVLC14S02050 EVLC14S02050
VA101
MIC1
OBG-415L42-C33LH
MIC_P
MIC_N
TEST POINT
CIRCUIT