Samsung GT-C5510 - Page 28

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Flow Chart of Troubleshooting
9-5
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9-1-3.
Microphone Part
Microphone does not work
Yes
Is the assembled status of
microphone O.K?
Yes
No
Reassembled the microphone
Check the reference voltage on mic path
Yes
On booting,
HSED_BIAS
≒
1.8V ?
Yes
END
No
No
Check UCP300
On booting,
between MIC+&MIC-
≒
0.8V?
Resolder or change
L512, C513, C514, C516, R545
Yes