LG GT500 Service Manual page 142

H. WCDMA 900 mode
ANTSW3
ANTSW1
ANTSW0/2
WCDMA900
Logic OK?
Input Signal and Power to
Front End Module block is OK.
See the Next Page
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Only for training and service purposes
WCDMA900 Mode
MODE=11
WTXC=3012,1,890,903,542,557
High
Low
Low
Figure 4-27-2. WCDMA900 Mode
No
4.17 part Check
Yes
Change the Board
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4. TROUBLE SHOOTING
No
OK?
Yes
Try 4.17 part
LGE Internal Use Only