LG LG-H815 - Main MIC

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reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
3.19.3 Audio - Main MIC
Circuit Diagram
Image
Check parts about
MIC Output (FB6920)
works well ?
Start
Check the MIC signal by test mode
or Voice recording.
Check MIC-
hole and mesh and
MIC- Rubber
Voice Signal OK?
Check parts about
MIC Bias VA6923
works well ?
No
Yes
No
Yes
No
Yes
End
Change Main Board
A Main MIC is located at the bottom of PCB
It operates in case of voice call (handset), voice recording, camcorder recording
TP1
: (FB6920)
TP2:
(VA6923)
Checking Flow
MIC Rubber
Folder
PCB
Bottom
PCB
Top
MIC Mash
TP1
: (FB6920)
TP2:
(VA6923)
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