SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
9-6
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9-1-3.
Microphone Part
(
MAIN)
Microphone does not work
Yes
Is the assembled status of
microphone O.K?
Yes
No
Reassemble the microphone
Check the reference voltage on mic path
Yes
On booting,
HSED_BIAS(L500)
≒
1.8V ?
Yes
No
No
Check UCP300
On calling,
MIC1+(C502)
&
MIC1-(C507)
≒
1.0V?
Yes
On booting,
voltage between
MIC1+(L502) and MIC1-(GND)
≒
0.8V?
No
Yes
Change MIC_500
On calling,
MIC_SEL(U500 pin4&8) are
≒
0V ?
Yes
No
Check UCP300
Check UCP300
END
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