Level 3 Repair
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8-11
8-3-4. Microphone Part
(MAIN MIC)
Check 11pin USB FPCB
where MIC is placed
for any damage (Tear in
FPCB, etc)
Check the voltage at
TP402 = 2.8V
Replace the 11pin USB FPCB
Replace U404
END
No
Yes
Yes
Yes
No
Check microphone function
in voice call RCV mode
or in voice recording mode
Check component soldering
status of L400, L401, C400,
C401.
Replace L400, L401, C400, C401
No
Yes