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Samsung Galaxy Note 3 SM-N900 Sub ,Second Mic not working Solution

Samsung Galaxy Note 3 SM-N900 Sub ,Second Mic not working Solution  Schematic, Diagram , Circuit 

Samsung Galaxy Note 3 SM-N900 Sub ,Second Mic not working Solution Step by Step 

Step 1

Check Sub(2nd) microphone function
in voice call loudSPK NS Off mode
or in camcording mode

Step 2

Check PCB where Sub MIC
(MIC701) is placed
for any damage
Replace the PCB module

Step 3

Check the voltage at
C753 = 2.8V
resolder or replace U703

Step 4

Check component soldering
statuses of L701, L702
Resolder or replace L701, L702

Step 5

END

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Updated: 09/12/2015 — 11:03 PM

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