LG KS660 Service Manual page 97

4. TROUBLE SHOOTING
4.11. Trouble shooting of RF Block 2 (SGR) Receiver part
Checking Flow
START
Setup Test Equipment
Cell Power : –74dBm
EGSM CH30
DCS CH699
Check point ①
DCXO
Check point ②
PLL Control
Check point ③
Mobile SW & FEM
Check point ④
RX I/Q Signal
Re-Download S/W & CAL
LGE Internal Use Only
Checking Points
Figure 1. Main PCB
- 98 - Copyright © 2008 LG Electronics. Inc. All right reserved.
①
②
③
④
③
Only for training and service purposes