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SGH-X140 Flow Chart of Troubleshooting
2-
7
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2-1-4. Microphone Part
Is the assembled status
of microphone O.K?
Microphone does not work
Reassembled the microphone
Resolder or change
R511,R510,R512,C515,C512,R516,
R517,R508,R515,R520,R520,C525
END
No
Yes
Yes
Yes
Yes
No
Is microphone ok?
No
Check U101
Check the reference voltage on mic path
ZD632
≒
2.0V ?
Yes