Table Of Contents - Nokia RM-12 Troubleshooting Instructions

Introduction to RM-12 troubleshooting ......................................................................... 2
General guidelines for RM-12 troubleshooting ............................................................. 2
Tools needed for troubleshooting ............................................................................... 2
General guidelines ....................................................................................................... 2
RF Troubleshooting ....................................................................................................... 3
Introduction to RF troubleshooting ............................................................................. 3
RF Key component placement .................................................................................... 4
RF Measurement points .............................................................................................. 5
EGSM900, GSM1800 & GSM1900 Transmitter .......................................................... 6
General instructions for Tx troubleshooting ............................................................... 6
Additional information for EDGE troubleshooting .................................................. 12
EGSM900, GSM1800 and GSM1900 Receiver .......................................................... 21
General instructions for Rx troubleshooting ............................................................. 21
Synthesizer .................................................................................................................. 28
General instructions for synthesizer troubleshooting ................................................ 28
Baseband troubleshooting ........................................................................................... 33
Partially damaged device .......................................................................................... 33
Most common symptoms reported by customer ....................................................... 33
Dead or jammed device troubleshooting .................................................................. 35
ASIC is changed ........................................................................................................ 40
Test points ................................................................................................................. 40
Selftests / "Contact service" on display .................................................................... 40
Flashing troubleshooting ........................................................................................... 44
Power troubleshooting .............................................................................................. 47
Audio troubleshooting ............................................................................................... 53
Display troubleshooting ............................................................................................ 60
Pixel defects .............................................................................................................. 65
Backlight troubleshooting (1) ................................................................................... 67
Backlight troubleshooting (2) ................................................................................... 68
Backlight troubleshooting (3) ................................................................................... 69
Hall sensor troubleshooting ...................................................................................... 70
Keyboard troubleshooting ......................................................................................... 71
Camera Module Troubleshooting ............................................................................. 72
Camera construction ................................................................................................. 79
Camera fault finding diagrams .................................................................................. 86
FM Radio troubleshooting ........................................................................................ 89
USB Problems (1) ..................................................................................................... 93
USB Problems (2) ..................................................................................................... 94
BC3 Bluetooth Troubleshooting ............................................................................... 95
MMC Troubleshooting (1) ........................................................................................ 99
MMC Troubleshooting (2) ...................................................................................... 100
Accessory troubleshooting ...................................................................................... 101
SIM troubleshooting ............................................................................................... 102
Vibra Troubleshooting ............................................................................................ 106
Clocks and Reset troubleshooting ........................................................................... 107