LG D686 Service Manual page 116

Check the Signal level at TP1 (U801 )
Check the signal level at TP2 (U801)
Check the signal level at TP3 (U801)
Check the signal level at TP4 (FL802)
Check the signal level at TP5(FL803)
Check the Antenna Clip (ANT804)
LGE Internal Use Only
START
Yes
Yes
Yes
Yes
Yes
Yes
BT-WiFi will work properly
No
No
No
No
No
No
- 116 - Copyright © 2013 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
Replace U801
Replace U801
Replace U801
Replace FL802
Replace FL803
Replace ANT804
Only for training and service purposes