Level 3 Repair
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8-14
8-3-4. Microphone Part
(SUB MIC)
Check Power&Volume key
FPCB where MIC is placed
for any damage (Tear in
FPCB, etc)
Check the voltage at
TP_403 = 2.8V
Replace the Power&Volume key FPCB
Resolder or replace C414
END
No
Yes
Yes
Yes
No
Check microphone function
in voice call speaker mode
or in voice recording mode
Check component soldering
status of L902, L903, C924,
C938.
Resolder or replace L902, L903, C924, C938.
No
Yes