Same here. The FE came prepared with a replacement board. Never repaired the board. In and out!
Sent from my iPhone > On Jul 2, 2025, at 17:55, Jon Elson via cctalk <[email protected]> wrote: > > On 7/2/25 11:25, Paul Koning via cctalk wrote: >> >>>> On Jul 2, 2025, at 11:13 AM, Jon Elson via cctalk <[email protected]> >>>> wrote: >>> >>> On 7/2/25 06:08, P Gebhardt via cctalk wrote: >>>> 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 >> 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. > > 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 >
