3. TROUBLE SHOOTING
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3.8.3 Main Mic Trouble Shooting
It’s operating voice call(including speaker phone), voice recording and camcorder recording.
START
Check the Mic signal by test mode or Voice
recording.
Change the Main Board
Check the parts about Mic Bias.
Mic works well?
Check a Mic hole & rubber to
make the voice signal?
Yes
Yes
Yes
Yes
Reconnect or change Mic(MIC6921).
Voice signal OK?
Change MSM8210(U2100)
Mic works well?
No
No
No
No
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