Microphone Part - Main Mic - Samsung SM-A920F Service Manual

8. Level 3 Repair

8-4-9-1. Microphone Part - Main MIC

Check main microphone function
in Loopback Test RCV_1stMic mode
Yes
No
Check the voltage at
Replace U8008 of MAIN PBA
C1031 = 1.8V of sub PBA
Yes
No
Check the Replace s u b P B A
MAIN_DMIC_DATA at Or replace Main BtoB FPCB
C1032 of sub PBA?
Yes
END
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