Summary: Weird problem in upgrade to AS600A 5/500

From: Amy E. Skowronek <amy_at_aloha.nascom.nasa.gov>
Date: Tue, 26 Aug 1997 15:43:00 -0400

The problem was that a behind the motherboard was not removed during
the upgrade. It was shorting out the memory. The upgrade instructions
are being rewritten to make it more clear, but if you're doing this
particular upgrade, be sure to look at the standoffs and make sure
you don't have any directly behind the memmory.

-Amy Skowronek
NASA Goddard Space Flight Center

Original description of problem follows:


>
> In an upgrade of an AS 600 4/x (x=266 or thereabouts)
> to an AS 600A 5/500, we had a simm slot fail.
> We swapped in a few different motherboards of the
> same rev level (C1) and it made no difference. Ditto
> for the cpu. Tried putting the graphics card in
> a different slot, just for kicks, but of course that
> didn't make any difference either.
>
> During the initial test of memory, it gave errors along
> these lines:
>
> Bank 1, slot 2,
>
> (address something or other) wrote aaaaaaaaaaaaaaaa read aaaa5555aaaaaaaaaaaa
>
> and this repeated for something like 8 sequential addresses.
>
> We took the memory out of bank 1 and are doing without it
> for now.
>
> Has anyone else done this upgrade, with or without problems?
>
> -Amy Skowronek
> NASA/Goddard Space Flight Center
> amy_at_aloha.nascom.nasa.gov
>
Received on Tue Aug 26 1997 - 22:00:14 NZST

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