Main Mic - Samsung SM-G973F Service Manual

8. Level 3 Repair

8-4-18-1. Main MIC

Check main microphone function
In voice call Handset mode
or voice recorder mode
Check the signal of
NO
C9029 = 1.8V
Resolder or replace the U9025 (Codec IC)
R9003 = 2.4MHz
YES
Resolder or replace the MIC9000
YES
END
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