Nokia 2270, 2272, 2275, 2285 Service Manual
CCS Technical Documentation
Troubleshooting - RF
RH-3
Issue 1 06/2003
Nokia Corporation Confidential
Page 3
Contents
Page No
RF Troubleshooting ....................................................................................................... 5
RH-3/RH-3P General Troubleshooting Notes .............................................................5
Conditions of Phone ....................................................................................................5
Conditions of Phone ....................................................................................................5
TX Power Low .......................................................................................................... 5
Receiver Not Working Properly................................................................................ 6
Phone Cannot Make a Call........................................................................................ 6
Receiver Not Working Properly................................................................................ 6
Phone Cannot Make a Call........................................................................................ 6
Transmitter Troubleshooting .......................................................................................7
Cell Transmitter......................................................................................................... 7
PCS Transmitter ...................................................................................................... 14
PCS Transmitter ...................................................................................................... 14
Receiver Troubleshooting ..........................................................................................21
Cell Receiver ........................................................................................................... 21
PCS Receiver........................................................................................................... 28
PCS Receiver........................................................................................................... 28
GPS Troubleshooting .................................................................................................36
GPS Receiver .......................................................................................................... 36
GPS RF Quick Fault-finding Chart ......................................................................... 39
GPS RF Quick Fault-finding Chart ......................................................................... 39
Block Diagrams............................................................................................................ 40
Transmitter .................................................................................................................40
Receiver .....................................................................................................................40
Synthesizer .................................................................................................................41
GPS ............................................................................................................................41
Frequency Plan ..........................................................................................................42
Jedi .............................................................................................................................42
Yoda ...........................................................................................................................43
Receiver .....................................................................................................................40
Synthesizer .................................................................................................................41
GPS ............................................................................................................................41
Frequency Plan ..........................................................................................................42
Jedi .............................................................................................................................42
Yoda ...........................................................................................................................43
Description of RF ASICs ............................................................................................. 43
Jedi (N601) ................................................................................................................43
Yoda (N700) ..............................................................................................................44
Alfred (N901) ............................................................................................................44
Orca (N803) ...............................................................................................................44
Shamu (N802) ............................................................................................................44
GPS ASIC (N054) .....................................................................................................44
Yoda (N700) ..............................................................................................................44
Alfred (N901) ............................................................................................................44
Orca (N803) ...............................................................................................................44
Shamu (N802) ............................................................................................................44
GPS ASIC (N054) .....................................................................................................44
Probing Diagrams ........................................................................................................ 44
Tuning Descriptions ..................................................................................................... 50
Tuning Descriptions ..................................................................................................... 50