Microphone Part - Samsung SGH-E840 Service Manual

3-1-5. Microphone Part

Microphone does not work Microphone does not work
Check the Check the
assembled status of assembled status of
microphone. microphone.
YES YES
Check the reference Check the reference
voltage on mic path voltage on mic path
R402=2.9V R402=2.9V
YES YES
Is microphone ok? Is microphone ok?
YES YES
END END
NO NO
NO NO
NO NO
3-11
Flow Chart of Troubleshooting
Reassemblage microphone Reassemblage microphone
resolder or change resolder or change
(R402, (R402,
TA400,C407,R400) TA400,C407,R400)
Check Check UCP300 UCP300