Table Of Contents - Nokia RM-14 Rf Troubleshooting And Manual Tuning

RM-14
RF Troubleshooting and Manual Tuning

Table of Contents

Introduction ......................................................................................................... 5
Notes on reference measurements.................................................................... 5
Helgo / Synthesizer Troubleshooting................................................................ 6
N500 Helgo troubleshooting .............................................................................. 7
Synthesizer troubleshooting............................................................................... 8
Tx Troubleshooting............................................................................................. 9
Tx 900 GMSK troubleshooting......................................................................... 10
Tx 1800/1900 GMSK troubleshooting.............................................................. 11
Rx Troubleshooting .......................................................................................... 12
Rx 900 troubleshooting .................................................................................... 13
Rx 1800 troubleshooting .................................................................................. 14
Rx 1900 troubleshooting .................................................................................. 15
Bluetooth / FM Radio Troubleshooting ........................................................... 16
Bluetooth troubleshooting ................................................................................ 17
FM radio troubleshooting ................................................................................. 18
Service Tool Concept for RF Tunings ............................................................. 19
Service concept for RM-14 RF tunings ............................................................ 20
Receiver Tunings............................................................................................... 21
RX channel select filter calibration................................................................... 21
RX calibration................................................................................................... 22
EGSM900 band ............................................................................................. 22
GSM1800 band .............................................................................................. 24
GSM1900 band .............................................................................................. 25
RX band filter response compensation ............................................................ 26
EGSM900 band ............................................................................................. 27
GSM1800 band .............................................................................................. 30
GSM1900 band .............................................................................................. 31
Transmitter Tunings .......................................................................................... 33
TX power level tuning ...................................................................................... 33
EGSM900 PA High Mode with EDGE off ....................................................... 34
EGSM900 PA high mode with EDGE on ....................................................... 35
GSM1800 PA high mode with EDGE off ........................................................ 36
GSM1800 PA high mode with EDGE on ........................................................ 37
GSM1900 PA high mode with EDGE off ........................................................ 38
GSM1900 PA high mode with EDGE on ........................................................ 39
TX I/Q tuning.................................................................................................... 40
ISSUE 1 11/04 COMPANY CONFIDENTIAL
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