Trouble Shooting Of Receiver Part - LG KP550 Service Manual

5. Trouble shooting

5.14 Trouble shooting of Receiver part

Checking Flow
START
Setup Test Equipment
Cell Power : ñ74dBm
EGSM CH30
DCS CH699
Checking Points
Figure 1. Main PCB
Check point
DCXO
Check point
PLL Control
Check point
Mobile SW & FEM
Check point
RX I/Q Signal
Re-Download S/W & CAL
Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only
- 95 -
Only for training and service purposes