- 85 -
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
5.8 Ear-MIC Jack Detection trouble
START
Is the status of FB308
TP1
low?
Assemble
Solder FB308 again
Yes
No
No
Check the Ear-Jack detection.
Solder again or
Replace CN302
The main board has a
problem
Replace Main PCB
Yes
Check the soldering
status of CN302
CN302
TP1
Ear-Jack Signal
FB308