SGH-X200 Flow Chart of Troubleshooting
2-6
2-1-4.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
R169
≒
2.0V
Yes
Resolder or change
R169,C185,R148,R149,R150,R151,
R152,R153,C156,C157,C158,C160,C161
No
Is microphone OK?
Yes
Check
U107
No
1
2
C185
1 1
2 2
L107
R168
R152
10K
VCCA_2.9V
R169
C156
R148
R153
10PF
C157
50V
C158
C161
R149
R150
C160
R151
MIC+
MICINN
MICOUTN
MICOUTP
MICINP
Содержание SGH SGH X200
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