LG LG-A270 - Microphone Trouble

4. TROUBLE SHOOTING
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Only for training and service purposes
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4.11 Microphone Trouble
Figure 4.11.2
R244 1
SUMY0003815
B4010AL443-49
MIC200
2
1
VA203VA202
10u
C215
39pF
C218
C219
0.033uF
C221
39pF
C216
39pF
R217
2.2Kohms
R213
1Kohms
VMIC_BIAS_P
100ohms
R219
R218
100ohms
2.2Kohms
R220
C220
39pF
0.033uF
C217
L202 27n
27nL203
MAIN_MIC_P
MAIN_MIC_N
(10 uF,6.3V ,M ,X5R ,TC ,1608 ,R/TP)
ECCH0005604
MIC
TP1
TP2
MIC200
TP1
TP2