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9-4. Microphone Part - Phone MIC
Phone mic. does not work
( When UCP200 operate
SAMSUNG Proprietary-Contents may change without notice
Yes
Check the connection
from MIC
OK
R325=2.15V?
and call is connected )
Yes
Check the circuit
OF MIC_BIAS part
OK
Check the circuit
of MIC part
OK
Is Phone MIC working?
Yes
END
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Not OK
No
Resolder R325, Check U400
Not OK
Resolder TA301, R323, R324, R326
Not OK
Resolder C308, C310, L308,
L309,C307, C311, L310, L311, R321
No
9-7
Flow Chart of Troubleshooting
Resolder MIC
Replace MIC
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