Microphone Part (Main Mic) - Samsung GT-i9100 Service Manual

Level 3 Repair

8-3-5. Microphone Part (Main MIC)

Check main microphone function
in voice call receiver mode
or in Voice Recording mode
Yes
Check Sub-PCB module
No
where main MIC is placed
Change the Sub-PCB module
for any damage (Tear in FPC,
etc)
Yes
No
Check the voltage at
Resolder or replace U609
C656 = 2.8V
Yes
No
Check component soldering
Resolder or replace C621, C622
statuses of C621, C622
Yes
END
8-12
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