Checking Flow
Check Voltage Level of
R512 VMIC = 2.2 V ?
Check status of MIC
Replace U200(MTK6223D)
or Change PCB
Start
Make a Call
YES
YES
Check Component
status around Mic
OK
OK
NO
Replace U200 MTK6223D
NG
Re-solder or Replace
Component
NG
Re-solder or replace
Microphone
63
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