LG GT500 - Page 137

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4. TROUBLE SHOOTING
C. GSM850/EGSM Tx mode
GSM850/EGSM Tx
MODE=3
SWTX=190,64,7
GSM850/EGSM Tx
Logic OK?
See the Next mode
(DCS Rx Mode)
No No
Yes Yes
Figure 4-23.GSM850/EGSM Tx Mode
Try 4.17 part
4.17 part Check
OK?
ANTSW0/1:Low
ANTSW2:Low
ANTSW3:High
WON : Low
Change the Board
Change U101
ANTSW0/1
ANTSW2
ANTSW3
Low
High
Low
No
Yes