Table Of Contents - Nokia RH-6 Series Rf Description & Troubleshooting

RH-6
7 - RF Description & Troubleshooting

Table of Contents

RF Description and Troubleshooting............................................................................. 3
RF key component placement .....................................................................................4
RF measurement points ...............................................................................................5
RF Implementation in RH-6 .......................................................................................... 8
RF frequency plan ........................................................................................................8
RF block diagram ........................................................................................................9
RF power supply configuration .................................................................................10
Receiver Description and Troubleshooting.................................................................. 11
RX signal paths ..........................................................................................................11
Fault finding chart for receiver ..................................................................................12
General instructions for RX troubleshooting .............................................................13
Transmitter Description and Troubleshooting ............................................................. 19
TX signal paths ..........................................................................................................19
General instructions for TX troubleshooting .............................................................20
EGSM900 TX troubleshooting ..................................................................................21
GSM1800 TX troubleshooting ..................................................................................24
GSM1900 TX troubleshooting ..................................................................................26
Synthesizer Description and Troubleshooting ............................................................. 28
26 MHz Reference Oscillator (VCXO) .....................................................................28
VCO ...........................................................................................................................28
General instructions for synthesizer troubleshooting ................................................29
Check synthesizer operation ......................................................................................30
Fault finding chart for PLL synthesizer .....................................................................31
Frequency Lists ..........................................................................................................32
RF Tuning Instructions ................................................................................................ 35
Setup for RF tuning ...................................................................................................35
RF tuning after repairs ...............................................................................................35
RX calibration ............................................................................................................35
RX band filter response compensation ......................................................................45
RX channel select filter calibration ...........................................................................54
RX AM suppression - not needed .............................................................................55
TX power level tuning ...............................................................................................56
TX I/Q tuning ............................................................................................................62
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Copyright © 2003 Nokia Corporation.
Company Confidential
CCS Technical Documentation
Issue 1 10/2003
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