LG U8110 Service Manual page 143

4. TROUBLE SHOOTING
Band
EGSM Tx
EGSM Rx
DCS Tx
DCS Rx
WCDMA
Low
ANTSW1
Low
ANTSW2
Low
ANTSW3
ANTSW0 ANTSW1
H
H
H
H
H
Table 4-1. Antenna Switch Module Logic
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WCDMA Mode
MODE=4
WTXC=9750,0,1,
0
SYCT=1 07 00
TXGN=1,43
ANTSW2
L L
L L
H H
L H
L L
ANTSW3
H
L
L
L
L