LG -V909DW Service Manual page 67

Hide thumbs Also See for LG-V909DW:

Table of Contents

RF Switching control Logic is as below table.

Also we need a checking of FEM power supply pin whether the FEM operates well or not.

Also we need a checking of FEM power input pin whether the FEM operates well or not.

LGE Internal Use Only

Table 5 RF path switching control logic

+2.85V_VDD_RF_SW

FIG 10 FEM Power schematic

Table 6 Recommended FEM supply voltage

+2.85V_MDM_SDCC1

4. TROUBLE SHOOTING

Only for training and service purposes

GSM1800/1900RX2

GSM1800/1900RX1

Troubleshooting