24 Dec
2015
24 Dec
'15
2:22 p.m.
On 12/24/2015 9:59 AM, Michael Thompson wrote:
The prints that came with this PDP-12 are here:
http://bitsavers.trailing-edge.com/pdf/dec/pdp12/maintenance/DEC-12-HR2B-D_…
??? That document is not prints. I suspect you meant:
http://bitsavers.trailing-edge.com/pdf/dec/pdp12/maintenance/DEC-12-HR1B-D_…
Which is the same revision as mine. (I see that the 1969 edition is
also there, but under the name PDP12-MaintVol3_SchemsMar69.pdf).
We have been able to fix all types of broken flip-chips. Sourcing the
components is sometimes a challenge. The Germanium transistors for the TU20
on the PDP-9 were hard to find.
I remember replacing a germanium (at least I think it was) transistor on
an SMS card with an ordinary silicon transistor in a 7094-II floating
point unit back around 1974. Luckily, that worked fine, though for a
museum I imagine one would prefer to use the "real thing". ;)
We found that the maintenance prints that came with the system do not
include ECO EM12-0055.
Does anyone have a set of KW12 prints that include ECO EM12-0055?
Jay, we are interested in anything PDP-12 related that we don't have.
Eventually I expect I will, over the next few years, scan in everything
that is not already on bitsavers, but it looks like your current needs
have been met.
The PDP-12 is described here:
http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12
Details on the PDP-12 restoration process are here:
http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12/dec-pdp-12-restor…
JRJ