Level 3 Repair
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8-10
8-3-5. Microphone Part
Check the main MIC(in Sub
PBA[GH59-13075A]) is placed
for any damage
Check Sub PBA 'Open/Short'
status between below each two
point
(38)
&
(40)
Resolder the main MIC.
replace Sub PBA.
END
No
Yes
Yes
Yes
No
Check microphone function
in voice call receiver mode
or in Voice Recording mode
Check the offset voltage
at below test
point
(40;Main_MIC_P)
> 0.4V
Resolder main MIC or replace Sub PBA.
If the voltage level is not fixed, then
you have to change U902.
No
Yes
