Table Of Contents - Nokia 6600 Rf Troubleshooting And Manual Tuning Manual

NHL-10
RF Troubleshooting

Table of Contents

Introduction ................................................................................................................... 5
General troubleshooting ................................................................................................ 6
RF Key Component Placement ..................................................................................... 7
Receiver Troubleshooting ............................................................................................. 9
General Description .................................................................................................... 9
General Instructions for RX Troubleshooting .......................................................... 10
Measuring RX I/Q signals using RSSI ................................................................... 10
Measuring RX performance using SNR measurement ........................................... 11
Measuring the RX module manually using Oscilloscope and Spectrum Analyzer 12
GSM900 .................................................................................................................. 12
GSM1800 ................................................................................................................ 14
GSM1900 ................................................................................................................ 15
Measurement points in the Receiver ...................................................................... 17
Tuning of the RX Using Phoenix ................................................................................ 19
RX Channel Select Filter Calibration ....................................................................... 19
RX Calibration .......................................................................................................... 19
RX Band Filter Response Compensation .................................................................. 22
Transmitter Troubleshooting ....................................................................................... 25
General Description .................................................................................................. 25
Preparation for Fault Finding .................................................................................... 26
Fault-finding chart: TX-BB interface and control signals ...................................... 28
Fault-finding chart: RF side of transmitter ............................................................. 29
Transmitter Tuning ...................................................................................................... 30
Introduction ............................................................................................................... 30
TX IQ Tuning ............................................................................................................ 30
TX Power Level Tuning ........................................................................................... 34
ISSUE 2 01/2004 COMPANY CONFIDENTIAL
Copyright © 2003 Nokia. All Rights Reserved.
CCS Technical Documentation
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