VAXstation 4000-60 bugchecks

From: H Vlems (hvlems.nieuw_at_zonnet.nl)
Date: 12/19/03

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    Date: Fri, 19 Dec 2003 21:42:10 +0100

    A VAXstation 4000-60 that has been running VMS 7.2 since 2001 was booted
    today and crashed with "fatal BUG check error; MACHINECHK, Machine check
    while in kernel mode"
    It wrote a dump and during the phase *** Dump process bits it got
    interrupted by a second BUGcheck (while processing a bugcheck).
    It tried to reboot and printed on its ASCII console:

    83 BOOT SYS
    ?33 UNXINT
    ?33 UNXINT

    Pressing the HALT button up front gives:

    ??CRPT - Corrupt bit is set

    After which the machine initializes, prints the KA46-A banner and tests OK
    and prints:

    ?12 DBL ERR2
      PC=E0042FE2 PSL=041F0004

    >>>

    At that point (the machine was not power cycled) I tried:

    TEST MEM test returns OK
    SHOW ERROR returns no information at all

    After that I tried to boot the system and VMS did start, but crashed a few
    seconds after it compleeted the boot process. Any suggestions what may be
    wrong here?

    Hans

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