LG GT500 - Page 135

- 136 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
A. GSM850 Rx mode
GSM850 Rx
MODE=3
SWRX=190,3
GSM850 Rx
Logic OK?
See the Next mode
(EGSM Rx Mode)
Change the Board
No No
Yes Yes
Figure 4-22-1. GSM850 Rx Mode
Try 4.17 part
4.17 part Check
OK?
ANTSW0
ANTSW2
ANTSW3
Low
High
Low