2 Jul
2025
2 Jul
'25
8:48 p.m.
On 7/2/25 11:25, Paul Koning via cctalk wrote:
Yes, we had an FE replace components on an 11/45. But, they
certainly NEVER did component-level repairs on an 11/780 or
uVAX-II.
Jon
On Jul 2, 2025, at 11:13 AM, Jon Elson via cctalk
<cctalk(a)classiccmp.org> wrote:
On 7/2/25 06:08, P Gebhardt via cctalk wrote:
That makes some sense. Print sets were needed in older machines because FE
would actually replace failed components on a board. With "swap the failed
board" repair procedures, it isn't all that useful for support engineers to know
how a board works, much less what the detailed circuitry looks like. Dear list members,
I was wondering if anybody is aware of VAX 86x0 schematics having survived the product
life cycle within DEC? I searched the web extensively but could not find any hints on
this.
It seems that DEC never published such details as schematics for the successor of the VAX
11/78x systems, not even on microfiche, maybe due to the macrocell array implementation
(just a guess). All I could find is that there were illustrated parts list on microfiche.
However, maybe Hewlett Packard handed DEC-internal documents over to a museum such as the
CHM? Or a former designer still have schematics in their archives?
Any pointers would be greatly appreciated!
I did have a KA630-AA print set at one
time. That was about the latest prints I have seen.
Jon