Re: VAXstation 4000-60 bugchecks

From: H Vlems (hvlems.nieuw_at_zonnet.nl)
Date: 12/20/03 

Date: Sat, 20 Dec 2003 12:46:13 +0100

"John Laird" <nospam@laird-towers.org.uk> schreef in bericht
news:26a8uvgodlgo1ns2bsmknli4so2f8paunb@4ax.com...
> On Fri, 19 Dec 2003 21:42:10 +0100, "H Vlems" <hvlems.nieuw@zonnet.nl>
> wrote:
>
> >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
>
> Device 12 is the serial controller according to my manual, and my ailing
> memory is telling me it has seen those "CRPT" messages when there was a
> fault on a VT console. Are you seeing this on a graphics console or a
> serial device ?
>
> Probably time to take the machine apart and put it back together again and
> hope it is something temporary. As far as your low-8Mb error report is
> concerned, no I don't think you can bypass or disable the system memory.
>

The S3 switch is in the VT console position. The OPA0 port is connected to a
PC that runs a Reflection2 VT300 emulator. That PC connects COM1 and COM2 to
a Digital Server 3300 and a Digital Server 5305. The VAXstation 4000
connects to a serial port to USB converter. That's why it is on COM3. I
removed all the memory boards (4 * 4 MB and 2 * 16 MB) and the LCG color
board; cleaned the contacts with a brush.
I put the LCG board and the two 16 MB simms back in place and booted. That
was two hours ago:

$ sh sys/nopr
OpenVMS V7.2 on node XENON 20-DEC-2003 12:41:30.02 Uptime 0 02:47:28
$ sh err
%SHOW-S-NOERRORS, no device errors found
$

It is a hobbyist system, replaced by two VAxstation 4000-90A's so it hadn't
been switched on for two months. Perhaps it must be powered on periodically.
Side question: I only have the Options Installation guide for the VS
4000-60. It hardly mentions maintenance and repair activities. I'm looking
for a service/maintenance manual for the 4000-60.

Hans

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