Table of Contents
Introduction to RF troubleshooting
Fault finding test point locations
Introduction to Rx troubleshooting
GSM Rx chain activation for manual measurements / GSM RSSI measurement
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WCDMA Rx chain activation for manual measurement
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General instructions for Tx troubleshooting
Checking antenna functionality
System mode independent manual tunings
Temperature sensor calibration
Rx band filter response compensation (GSM)
Rx band response calibration (WCDMA)
Tx AGC & power detector (WCDMA)
Tx band response calibration (WCDMA)
RF engine shield opening and closing instructions
Opening and closing the RF engine shield
List of Tables
Table 12 RF channel filter calibration tuning limits
Table 13 Temperature sensor calibration tuning limits
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Table 14 RF tuning limits in Rx calibration
List of Figures
Figure 56 RF key component placement, bottom
Figure 57 RF key component placement, top
Figure 58 Test point locations for spectrum analyzer, bottom
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Figure 59 Test point locations for spectrum analyzer, top
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Figure 60 Test points for oscilloscope, bottom
Figure 61 Test points for oscilloscope, top
RM-42
RF Troubleshooting and Manual Tuning Guide
Nokia Customer Care
9241872 (Issue 1)
Company Confidential
Page 7–3
Copyright ©2005 Nokia. All Rights Reserved.