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