LG KT520 Service Manual page 140

F. WCDMA mode
ANTSW0
ANTSW1
ANTSW2
WCDMA
Logic OK?
Yes
Input Signal and Power to
Front End Module block is OK.
See the Next Page
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
WCDMA Mode
MODE=4
WTXC=10700,1,890,903,542,557
Low
High
Low
Figure 4-27. WCDMA Mode
No
4.17 part Check
OK?
Yes
Change the Board
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4. TROUBLE SHOOTING
No
Try 4.17 part
LGE Internal Use Only