Table Of Contents - Nokia RH-13 Series Troubleshooting Manual

RH-13
Troubleshooting
Contents
Transceiver Troubleshooting ......................................................................................... 5
General about testing ...................................................................................................5
Phone operating modes ............................................................................................. 5
Measurement points .....................................................................................................6
Baseband Troubleshooting............................................................................................. 8
Power up sequence ......................................................................................................8
Phone does not start up normally or does not stay on............................................. 11
Flash Programming does not work.......................................................................... 12
Flash programming error codes............................................................................... 14
Charging ....................................................................................................................16
Audio failures ............................................................................................................16
Earpiece or external microphone line does not work.............................................. 18
Microphone or XEAR line does not work .............................................................. 19
Accessory detection ...................................................................................................20
Power supply for data cable .......................................................................................21
Sleep Clock ................................................................................................................21
Display/Keyboard lights do not work ........................................................................23
Display does not work ...............................................................................................24
Buzzer does not work.............................................................................................. 24
Vibra does not work ...................................................................................................25
Keyboard does not work ............................................................................................25
SIM does not work .....................................................................................................25
Infrared does not work ...............................................................................................26
RF troubleshooting....................................................................................................... 27
Repairing instructions for RF Unit ............................................................................27
Introduction ............................................................................................................. 27
Abbreviations in fault finding chart ...........................................................................28
Receiver ....................................................................................................................... 29
General instructions for RX troubleshooting .............................................................29
Path of the received signal .........................................................................................30
AMPS........................................................................................................................... 31
Step 1. General checking ...........................................................................................32
Audio test ................................................................................................................ 33
Step 2. Local oscillator checking ...............................................................................34
Step 3. RX chain checking .........................................................................................35
TDMA800 .................................................................................................................... 36
GSM850 ....................................................................................................................... 36
Step 1. General checking ...........................................................................................37
Step 2. Local oscillator checking ...............................................................................38
Step 3. RX chain checking .........................................................................................40
TDMA1900 .................................................................................................................. 42
Step 1. Local oscillator checking ...............................................................................43
GSM1900 ..................................................................................................................... 46
Step 1. General checking ...........................................................................................48
Step 2. Local oscillator checking ...............................................................................48
Step 3. RX chain checking .........................................................................................51
Transmitter ................................................................................................................... 53
Page 2 ãNokia Corporation
CCS Technical Documentation
Page No
Issue 1 11/02