User Guide

NPE-4
6 - Troubleshooting PAMS Technical Documentation
Page 6-2 ãNokia Corporation. Original
Table of Contents
Page No.
Introduction ...................................................................................................................................... 5
Baseband Troubleshooting ..................................................................................................... 5
Phone is dead ..................................................................................................................... 5
Flash programming doesn’t work ................................................................................. 7
Power doesn’t stay on, or phone jammed .................................................................. 8
Display information: “Contact service” ....................................................................... 9
The phone doesn’t register to the network or phone doesn’t make a call ......... 11
SIM failure .......................................................................................................................... 11
Display failure .................................................................................................................... 13
Keypad failure .................................................................................................................... 14
Audio faults ........................................................................................................................ 17
Charger faults .................................................................................................................... 19
Blue Tooth module faults ................................................................................................ 20
RF Troubleshooting .................................................................................................................. 23
Introduction ........................................................................................................................ 23
RF Key component placement ................................................................................ 24
RF Measurement points ........................................................................................... 25
PA Can ................................................................................................................... 25
Hagar RF can ....................................................................................................... 26
Abbreviations in fault finding charts ................................................................... 27
RF in general ....................................................................................................................... 28
EGSM Receiver ................................................................................................................... 29
General instructions for EGSM RX troubleshooting ......................................... 29
Fault finding chart for EGSM receiver ................................................................. 31
EGSM signal path ...................................................................................................... 31
RX/TX Switch ....................................................................................................... 31
Front-end .............................................................................................................. 32
Hagar ..................................................................................................................... 32
PCN Receiver ...................................................................................................................... 32
General instructions for PCN RX troubleshooting ............................................ 32
Fault finding chart for PCN receiver ..................................................................... 34
PCN signal path .......................................................................................................... 35
RX/TX Switch ....................................................................................................... 35
Front-end .............................................................................................................. 35