Level 3 Repair
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8-10
8-3-4. Microphone Part
Check Power&Volume key
FPCB where MIC is placed
for any damage (Tear in
FPCB, etc)
Check component soldering
status of C418, L401
Replace the Power&Volume key FPCB
Resolder or replace C418, L401
END
No
Yes
Yes
Yes
No
Check microphone function
in voice call speaker mode
or in voice recording mode
Check the voltage at
C422 = 1.65V
Resolder or replace C422
No
Yes
