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Nokia BSC3i – Diagnosing the BCSU

Below are steps in troubleshooting the BCSU of a defective plug-in unit. Read notes below for ESD requirements

Example. Replacing a plug-in unit in BCSU-0

  1. Check the computer unit working state.
    ZUSI:BCSU,0;
  2. If a unit is in working state WO, change the working state to SP. After the calls handled by the unit have ended, its state changes automatically to SP-EX. Change the working state first to TE and then to SE.
    ZUSC:BCSU,0:SP;
    ZUSC:BCSU,0:TE;
    ZUSC:BCSU,0:SE;
  3. Switch off the cartridge power supply.
  4. Remove the plug-in unit from the cartridge.
  5. Check the interchangeability of the new plug-in unit.
  6. Check the strappings of the new plug-in unit.
  7. Insert the new plug-in unit.
  8. Switch on the cartridge power supply.
  9. Change the computer unit working state to TE.
    ZUSC:BCSU,0:TE;
  10. Start the total diagnosis of the unit.
    ZUDU:BCSU,0;
  11. Check the diagnostics results.
    ZUDH:BCSU,0;
  12. Change the computer unit working state to SP (or WO).
    ZUSC:BCSU,0:SP;
  13. Check the alarms.
    ZAHO;

See figure below in inserting a plug-in unit

plug_in units

Note: Precautions in handling plug-in units

Comments»

1. Yugten - January 23, 2011

Hi Saravan,

Thank you for visiting my blog.

Anything I can help you with?

Yugten

2. Thamotharan - August 14, 2011

Thank you..If possible, upload the commissioning and diagnosing procedure of all units with illustration..


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