Microphone Part - Samsung SGH-Z560 Service Manual

9-5. Microphone Part

Microphone does not work
Check the connection
Change the KEY F_PCB
Check the U301 pin 1 =
Check the Circuit from
UCP100 to HDC301 pin18,20
Yes
from MIC
Yes
Yes
1.8V ?
Yes
Yes
END
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No
Resolder MIC
No
Replace the MIC
No
Resolder the U301
No
Check & Resolder the C343,C353,C341,C352
9-9
Flow Chart of Troubleshooting
R309,R311,R310,R308