LG GX300 Service Manual page 76

CHECKING FLOW
Start
TP1 & TP2 is
Short ?
Check TP3(Vbat)
of U302 or U300 ?
Check TP4~TP7 ?
Check FL302 / FL304
or FL300 / FL301 ?
Re-download SW and
Do calibration again
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SIM 1 Component or SIM 2 Component
No
Yes
No
Yes
No
Yes
No
Yes
EGSM Rx
4. TROUBLE SHOOTING
Replace Mobile SW
(SW300 or SW301)
Replace U302 or U300
Check PMB8810
Replace FL302 / FL304
or FL300 / FL301
TP4 TP5
77/158
- 77 -
4. TROUBLE SHOOTING
TP6 TP7
LGE Internal Use Only