Microphone Part - Samsung SGH-X105 Service Manual

SG H- X105 F low Chart of Troubleshooting

5. Microphone Part

M icrophone does not work
Y es
No
Is the assem bled status
R eassemble the m icrophone
of microphone O .K ?
Y es
C heck the reference voltage on mic path
No
Solder the microphone again or
C 247 = 2.5V
R eplace C 225, R 220, C247, R 219 R 214
Y es
No
Is microphone ok?
C heck U200
Y es
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