Ant_Sel0; Ant_Sel1; Ant_Sel2; Umts_Tx_Rx - LG HB620 Service Manual

4. TROUBLE SHOOTING
ANTENNA SW LOGIC for LSHS-M090UH(HITACHI MATAL)
EGSM TX
DCS/PCS TX
UMTS2100
EGSM/PCS RX
DCS RX
- UMTS Tx/Rx
- DCS1800/PCS1900 Tx
LGE Internal Use Only

ANT_SEL0

HIGH
HIGH
HIGH
LOW
LOW
[Table 4.1] Logic Table of the FEM
- GSM900 Tx
- GSM Rx / PCS1900 Rx
- 110 -

ANT_SEL1

ANT_SEL2

LOW
HIGH
LOW
LOW
LOW
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LOW
LOW
LOW
LOW
HIGH