LG GD580 Service Manual page 165

4. Trouble Shooting
B. GSM RF Level Check
(Bottom)
①
Check
EGSM/DCS/PCS Rx
signal level at ②.
LGE Internal Use Only
Figure 4-19-10. EGSM/DCS/PCS Rx path
v Agilent 8960 Setting
CW Mode
EGSM : -50dBm@Ch65(948MHz)
DCS : -50dBm@Ch700(1842.8MHz)
PCS : -50dBm@ch700(1967.8MHz)
EGSM:-51.5dBm
DCS/PCS:-51.7dBm
Yes
GSM Rx path OK.
(Top)
②
No
- 166 - Copyright © 2009 LG Electronics. Inc. All right reserved.
GSM/EDG
E PAM
U105
DCS PCS EGSM
Rx Rx Rx
GSM
Transceiver
RF3000
U102
Change Ant. SW module
(U105)
Only for training and service purposes