LG E475F Service Manual page 26

3. TROUBLE SHOOTING
GSM850/GSM900/DCS/PCS's RX/TX Signal PATH
A. GSM850/GSM900/DCS1800/PCS1900 RX PATH
B. GSM850/GSM900/DCS1800/PCS1900 TX PATH
C1. COMMON TX/RX PATH
LGE Internal Use Only - 26 - Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes