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