Samsung GT-S5230 - Microphone Part

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Flow Chart of Troubleshooting
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9-9
9-5.
Microphone Part
Microphone does not work
Yes
Resolder MIC
Check the connection
from MIC
No
Check the circuit related to R142
Check the JACK_IN
=
3.0V ?
Yes
Check the path from Main IC to MIC
Check the circuit
from UCP20
0 to
MIC
No
Yes
Replace the MIC
Check the MIC
No
Yes
END