Service Manuals, User Guides, Schematic Diagrams or docs for : NOKIA Mobile Phone 2220 7rh42trouble

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.



Image preview - the first page of the document



>> Download 7rh42trouble documenatation <<

Text preview - extract from the document

                  CCS Technical Documentation
                   RH-42 Series Transceivers




      Troubleshooting Instructions




Issue 2 09/2003    Confidential             Nokia Corporation
RH-42
Troubleshooting Instructions                      CCS Technical Documentation




Page 2               Nokia Corporation   Confidential           Issue 2 09/2003
                                                                                                             RH-42
CCS Technical Documentation                                                            Troubleshooting Instructions

Contents
                                                                                                                              Page No
  Transceiver Troubleshooting ......................................................................................... 5
   Baseband Troubleshooting ..........................................................................................5
     General testing........................................................................................................... 5
     Troubleshooting ........................................................................................................ 5
     Power up faults.......................................................................................................... 6
     Flash Programming does not work.......................................................................... 10
     Charging .................................................................................................................. 12
     Audio failures.......................................................................................................... 13
     Accessory detection................................................................................................. 16
     Sleep Clock ............................................................................................................. 17
     Display/Keyboard lights do not work ..................................................................... 18
     Display does not work............................................................................................. 19
     Buzzer does not work.............................................................................................. 20
     Keyboard does not work ......................................................................................... 20
   Receiver Troubleshooting ..........................................................................................20
     General instructions for RX troubleshooting .......................................................... 20
     Path of the received signal ...................................................................................... 20
     Fault-finding charts for receiver chain .................................................................... 21
   Transmitter Troubleshooting .....................................................................................24
     General instructions for TX troubleshooting .......................................................... 24
     Path of the transmitted signall................................................................................. 24
     Fault-finding charts for the transmitter ................................................................... 24
   Synthesizer Troubleshooting .....................................................................................28
     19.44 MHz reference oscillator ............................................................................... 28
     RX VHF .................................................................................................................. 29
     Fault-finding chart for RX VHF VCO ................................................................... 30
     TX VHF................................................................................................................... 30
     UHF Synthesizer ..................................................................................................... 31




Issue 2 09/2003                   Nokia Corporation                     Confidential                                       Page 3
RH-42
Troubleshooting Instructions                      CCS Technical Documentation




Page 4               Nokia Corporation   Confidential           Issue 2 09/2003
                                                                                             RH-42
CCS Technical Documentation                                            Troubleshooting Instructions


Transceiver Troubleshooting
       First, carry out a thorough visual check of the module. Make sure that:

       

◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo