Nokia RM-11 Series Troubleshooting Manual page 3

CC Technical Documentation
Turning on Rx Path Using Phoenix .......................................................................................................44
Switching Rx Gain States Using Phoenix ...........................................................................................46
Rx IF Troubleshooting Layout .................................................................................................................46
Rx RF Troubleshooting Layout ...............................................................................................................47
Receiver DC Troubleshooting Layout ...................................................................................................48
Receiver DC Troubleshooting Layout ...................................................................................................49
Measure Logic Levels for Rx Front End (N750) ............................................................................. 49
N750 Rx Troubleshooting ........................................................................................................................50
Things to Keep in Mind:....................................................................................................................... 50
Rx DC Troubleshooting N750 .................................................................................................................51
Control Signals at RF-BB Interface ......................................................................................................51
Back Panel Control Signals RF-BB Interface .....................................................................................52
GPS Introduction.......................................................................................................................................... 53
GPS Block Diagram ...................................................................................................................................53
GPS RF Schematic .....................................................................................................................................53
GPS Testing .................................................................................................................................................54
GPS RF Probing Setup ..............................................................................................................................57
GPS RF Probing Measurements.......................................................................................................... 58
Issue 2 09/2005
©2005 Nokia Corporation
Troubleshooting - RF
Confidential
RM-11
Page 3