Microphone Trouble - LG -A100 Service Manual

4.10 Microphone Trouble

TEST POINT
CIRCUIT
MAIN_MIC_P
MAIN_MIC_N
LGE Internal Use Only
VMIC_BIAS_P
R222
1Kohms
TP1
C219
R226
2.2u
2.2Kohms
ECZH0001421
C221
R227
(2.2uF 10% 6.3V X5R 1608)
100ohms
0.033uF
C223
R228
100ohms
0.033uF
R229
DNI
- 78 -
4. TROUBLE SHOOTING
TP1
TP2
MIC201
TP1
TP2
C220
39pF
TP2
C222
39pF
C224 C225
VA203 VA204
39pF 39pF
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Only for training and service purposes
MIC201
1
2