LG GT500 - Page 166

- 167 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
2. DCS/PCS Rx
SWRX=2,700,0,1024,1 (DCS)
SWRX=1,700,0,1024,1 (PCS)
Test Program Script
1. GSM850/EGSM Rx
SWRX=3,190,5,1024,1 (GSM850)
SWRX=0,65,5,1024,1 (EGSM)
v Agilent 8960 Setting
CW Mode
GSM850 : -50dBm@Ch190(881.6MHz)
EGSM : -50dBm@Ch65(948MHz)
DCS : -50dBm@Ch700(1842.8MHz)
PCS : -50dBm@ch700(1967.8MHz)
v Oscilloscope Setting
Figure 4-46. Test Points of GSM/DCS/PCS Rx
GSM Transceiver
RF3300
U111
GSM/EDGE
PAM
U101
②
DCS
Rx
PCS
Rx
EGSM
Rx
GSM8
50 Rx
①
(Bottom)
(Top)