Table of Contents
Advertisement
3.9.3 Main MIC troubleshooting
Main Mic. path as below :
MSM8226 -> WCD9302 MIC1_INP/ MIC1_INM -> Mic
Headphone icon display on Upper
right LCD ?
After Change Lower FPCB
Works well?
Check Mic Power in Main Board
TP1(MIC_BIAS_1)
Replace component U6100
LGE Internal Use Only
START
No
No
No
End
Yes
Refer to 3.9.5 Ear-MIC troubleshooting
Yes
Check Mic signal in Lower FPCB
TP2(MIC_IN1_P)
Replace component
MIC100on Lower FPCB
Yes
Change Main Board
- 80 -
Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
Yes
No
Only for training and service purposes
Advertisement
Table of Contents
Troubleshooting
