User Guide

NSD-5
10. Troubleshooting PAMS Technical Documentation
Page 4 Nokia Corporation Issue 1 05/02
Introduction ................................................................................................................24
Reference Documents ................................................................................................24
WinTesla General Set Up ............................................................................................ 25
CDMA Fault-finding Set Up .....................................................................................25
Synthesizer Tuning Menu ..........................................................................................26
Tuning AFC............................................................................................................. 26
Description of Test.................................................................................................. 26
Definition of Result................................................................................................. 27
Manual Verification ................................................................................................ 27
Synthesizer Troubleshooting .....................................................................................27
Test Points............................................................................................................... 29
Trouble Case 1: Tx VHF LO Power < -20dBm ........................................................29
Trouble Case 2: Rx VHF LO Power < -12dBm ........................................................30
Trouble Case 3: UHF LO Power < -5dBm ................................................................30
Trouble Case 3: Rx UHF LO Power < -5dBm ..........................................................30
TX Tuning .................................................................................................................35
Description of Test.................................................................................................. 35
Definition of Result................................................................................................. 36
Manual Verification ................................................................................................ 36
TX Troubleshooting Flowchart .................................................................................38
1900 PCS Tuning Rx IF AGC ...................................................................................40
Description of Test.................................................................................................. 40
Definition of Result................................................................................................. 41
Manual Verification ................................................................................................ 41
1900 PCS Tuning Rx IF Compensation ....................................................................42
Description of Test.................................................................................................. 42
Definition of Result................................................................................................. 42
Manual Verification ................................................................................................ 43
RX Troubleshooting ..................................................................................................45
Troubleshooting ...................................................................................................... 45
Rx VHF LO Measured at RIF Pin 20 with a Hi Z Probe........................................ 46
RX Troubleshooting Flowchart .................................................................................46
Test Points .................................................................................................................46