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Flow Chart of Troubleshooting
Microphone
MICROPHONE
Close to microphone
M400
JACK_IN
C406
C405
C411
C414
C417
C418
VDD2_2V85
R409
5
7
6
U401-2
R415
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MIC_BIAS_2V1
R400
R401
MIC+
L400
L401
VDD2_2V85
VDD2_2V85
R412
3
8
1
2
U401-1
4
R416
7-12
Close to MCP
C400
C407
C408
C413
R402
C412
C416
R404
R407
EAR_SWITCH
MIC_P
MIC_N
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