User Guide

Flow Chart of Troubleshooting
3-6
3-1-4.Microphone Part
* Call with Sim before testing.
Check the soldered status
of microphone
MicroPhone does not work
Resolder microphone
END
No
Yes
Yes
Check the reference
voltage on mic path
C139
≒
2.0V
Yes
Resolder or change
R143,R147,C139,C145,C140,C144,
R148,R149,R150,R152
No
Is microphone OK?
Yes
Check UCP101
No
1
2
441C
051R
041C
841R
741R
541C
V9.2_ACCV
641C
941R
251R
451R
001CIM
341R
931C
911RV811RV
NTUOCIM
PT
UOCIM
PNICIM
NNICIM