LG W3000 Service Manual page 55

4. TROUBLE SHOOTING
VC1
VC2
Graph 4-4. ANT SW Control
GSM. DCS RX Mode
RXEN
GSMSEL
Graph 4-5. Control Signal
for GSM RX Mode
ANT SW GSMSEL
EGSM TX
DCS TX
EGSM RX
DCS RX
Low
Low
DCSSEL
TXPA
DCSSEL TXPA
1 0 1
0 1 1
1 0 0
0 1 0
Low
High
Low
Graph 4-6. Control Signal
- 54 -
for DCS Rx Mode