![background image](http://html.mh-extra.com/html/samsung/gt-i9300/gt-i9300_service-manual_1192600050.webp)
Level 3 Repair
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-23
8-3-6-1. Microphone Part (Sub MIC)
Check PCB where Sub MIC
is placed
for any damage
Check component soldering
statuses of C643, C645
Replace the PCB module
Resolder or replace C643, C645
END
No
Yes
Yes
Yes
No
Check Sub microphone function
in voice call loudSPK mode
or in camcording mode
Check the voltage at
C605 = 2.8V
Resolder or replace U603
No
Yes