LG GT500 Service Manual page 167

4. TROUBLE SHOOTING
B. GSM RF Level Check
①
Check
GSM850/EGSM/DCS/PCS
Rx signal level at ②.
LGE Internal Use Only
(Bottom)
Figure 4-47. GSM850/EGSM/DCS/PCS Rx path
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)
GSM850/EGSM:-51.5dBm
DCS/PCS:-51.7dBm
Yes
GSM Rx path OK.
(Top)
GSM Transceiver
RF3300
U111
GSM8 EGSM DCS
50 Rx Rx Rx
GSM/EDGE
PAM
U101
No
- 168 - Copyright © 2009 LG Electronics. Inc. All right reserved.
PCS
②
Rx
Change Ant. SW module
(U101)
Only for training and service purposes