Main Mic - LG -H815 Service Manual

3.19.3 Audio - Main MIC
A Main MIC is located at the bottom of PCB
It operates in case of voice call (handset), voice recording, camcorder recording
Checking Flow
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 ?
Check parts about
MIC Output (FB6920)
works well ?
Change Main Board
End
LGE Internal Use Only
Yes
No
Yes
No
Yes
No
PCB
Top
MIC Mash
Folder
MIC Rubber
TP1
: (FB6920)
54
3. TROUBLE SHOOTING
Image
TP1
: (FB6920)
Circuit Diagram
Copyright ⓒ 2015 LG Electronics. Inc. All right
reserved. Only training and service purposes
PCB
Bottom
TP2:
(VA6923)
TP2:
(VA6923)