Return to MAIN-Index  Return to SUB-Index    IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

Undetermined Problems (TP 380XD, 385XD, 380Z - 2635)



Undetermined Problems

You are here because the diagnostic tests did not identify which adapter or device failed, installed devices are incorrect, a short circuit is suspected, or the system is inoperative. Follow the procedures below to isolate the failing FRU (do not replace non-defective FRUs).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly.


  1.  Turn off the computer.
  2.  Visually check them for damage. If any problems are found,  replace the FRU.
  3.  Remove or disconnect all of the following devices.

    1.  Non-IBM devices
    2.  Devices attached to the port replicator.
    3.  Printer, mouse, and other external devices
    4.  Battery pack
    5.  Hard disk drive
    6.  CD-ROM and FDD
    7.  DIMM
    8.  PC Cards

  4.  Turn on the computer.
  5.  Determine if the problem is solved.
  6.  If the problem is solved, reconnect the removed devices  one at a time until you find the failing FRU.
  7.  If the problem remains, replace the following FRUs one at a time.
     Do not replace a non-defective FRU.

    1.  System board
    2.  DC/DC card
    3.  LCD assembly
    4.  CPU card

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