User Guide
CCS Technical Documentation
Company confidential RH-23
Issue 1 03/2004 Copyright Nokia. All rights reserved.. Page 3
RF Troubleshooting ....................................................................................................... 5
Introduction to RF troubleshooting .............................................................................5
RF Key component placement .....................................................................................6
RF Measurement points ...............................................................................................7
EGSM900 and GSM1800 Transmitter .......................................................................... 8
Additional information for EDGE troubleshooting ..................................................... 15
EGSM900 and GSM1800 Receiver............................................................................. 23
Synthesizer ................................................................................................................... 28
General instructions for synthesizer troubleshooting ................................................28
Baseband troubleshooting ............................................................................................ 33
Main Troubleshooting Diagram ................................................................................36
Phone is dead .............................................................................................................37
Flash fault ..................................................................................................................38
Flash fault ..................................................................................................................39
Phone is jammed ........................................................................................................41
Charging fault ............................................................................................................42
SIM card fault (“Insert SIM card” or “SIM card rejected”) ......................................43
Keypad fault ...............................................................................................................44
Keypad fault (continued) ...........................................................................................45
Display fault ...............................................................................................................46
Accessory detection fault ...........................................................................................47
Audio faults ...............................................................................................................48
Audio fault (microphone) ..........................................................................................50
Audio fault (IHF) .......................................................................................................51
Audio fault (headset microphone) .............................................................................52
Audio fault (headset earpiece) ...................................................................................53
Camera fault ...............................................................................................................54
FM Radio Troubleshooting ........................................................................................55
Keypad Illumination Fault .........................................................................................57
LCD1 Illumination Fault ...........................................................................................58
LCD2 Illumination Fault ...........................................................................................59