LG GB220 - Microphone Trouble

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4.12 Microphone Trouble
TEST POINT
CIRCUIT
Figure 4.12.1
R200
R201
C207
VA200
VA201
R202
C206
R204
R210
R203
MICN1
R12
R13
MICP1
T12
MIC_N
MIC_P
MIC
OB4-15L42-C33L
MIC200
1
2
C210
47p
RCLAMP0521P_TCT
EDTY0009601
VA201VA200
2.2K
R204
0.1u
R203
R202
0.1u
R201
2.2K 1K
R200
47p
C207
10u
ECTH0005601
C205
VMIC
MIC_P
MIC_N