Microphone Part - Samsung SGH-X160 Service Manual

Flow Chart of Troubleshooting

10-1-4.Microphone Part

* Call with Sim before testing.
MicroPhone does not work
Check the soldered
status of microphone
Check the reference
voltage on mic path
Is microphone OK?
MICINP
MICOUTP
MICINN
MICOUTN
Yes
Yes
R335 ≒ 2.0V
Yes
Yes
END
R358
C316
R359
R363
C322
R364
No
Resolder microphone
No
R335,R336,R337,R338,R339,R340,R341,
C318,C320,C321,C322,C323,C361
No
R354
R355
L301
1
1
C319
2
2
C326
C327
10-6
Resolder or change
Check UCP107
VCCA_2.9V
R353
MIC+
C336
1
2