3. TROUBLE SHOOTING
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3.13.5 Sub MIC Trouble Shooting
A sub MIC is located on Main PCB.
It operates in case of voice call (Speaker phone).
START
Check the Mic signal by test mode
End
2. Check parts about Mic Bias(1.77V)
works well ?
3. Check parts about
Mic Output (FB10006) works well ?
Change Main Board
1. Check Mic
hole and mesh filter and Mic Cap.
Voice Signal OK?
No
No
No
Yes
Yes
Yes