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8. Level 3 Repair
8-4-18-1. Main MIC
Check IF USB Board
Connection (SOC200)
Check the signal of
C242 = 1.8V
END
Set the SOC200 connection
NO
Check main microphone function
In voice call Handset / Loud SPK mode
or voice recorder mode
Resolder or replace the U8042 (Codec IC)
YES
YES
NO
YES
Replace the IF USB Board
