Microphone Part (Sub Mic) - Samsung GT-I9300 Service Manual

8-3-6-1. Microphone Part (Sub MIC)

Check Sub microphone function
in voice call loudSPK mode
or in camcording mode
Check PCB where Sub MIC
is placed
for any damage
Check the voltage at
C605 = 2.8V
Check component soldering
statuses of C643, C645
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Yes
Yes
Yes
Yes
END
No
Replace the PCB module
No
Resolder or replace U603
No
Resolder or replace C643, C645
8-23
Level 3 Repair