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Level 3 Repair
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8-11
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 C422, C424, L403,
L405
Replace the Power&Volume key FPCB
Resolder or replace C422, C424, L403, L405
END
No
Yes
Yes
Yes
No
Check microphone function
in voice call speaker mode
or in voice recording mode
Check the voltage at
C414 = 2.8V
Resolder or replace C414
No
Yes