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SGH-E880 Flow Chart of Troubleshooting
2-
7
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2-1-4. Microphone Part
The assembled status of
microphone is O.K
Microphone does not work
Reassembled the microphone
Resolder or change
C417,R413,R418,R442
END
No
Yes
Yes
Yes
Yes
No
The microphone is O.K
No
Check U100
Check the reference voltage on mic path
The Voltage @ C417 is
about 2.2V ±10%
Yes