Hi all,
I have to repair an PSU of a 11/23 n a BA11 Box with an H9720 Backplane
(with an KDJ-11A) that has run an CNC milling machine until 2 weeks
before now. :-) This is a Fidia machine..never heard about it before.
The problem is that a big 19000µF 40V capacitor in the PSU has failed
and that I think because of that the 2nd of the two Nidec fans has
finally failed.
I'm in the process of cleaning the goo from the PSU-PCB, found a burnt
5A fuse and now I'm checking the Semiconductors...
The problem is here that the Transistors (and diodes) have uncommon
types printed on, an TO220 is named SJE2677, another one is labeled
12652-00 RCA..and so on.
I've found a label with "0H780-B" on the PSU.. H780 PSU?
Where can I get some schematics from that beast? It is a secondary
switcher ist seems.
Regards,
Holm
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Friends,
The process of migrating the cctalk and cctech mailing lists to a new
host in Chicago is underway. This evening, I've moved the list mail
handling to the new server, and this message will be the first live
test. Assuming this works, you shouldn't have to change anything to
post to the list.
The green web pages, the old "pipermail" list archives, and web access
to archives of new postings from this point still require a little work,
which I hope to complete in the next day or two. I will eventually
import the old pipermail archives into the new posting archive, but that
may take a little longer.
The new hosting is provided by the Chicago Classic Computing group.
Many thanks to Jay West for hosting the lists for 20 years!
/Dennis Boone
I have the following books free to a good home:
SmallTalk-80: The Language & its Implementation
SmallTalk-80: The Interactive Programming Environment
SmallTalk-80: Bits of History, Words of Advice
Email tpisek at pobox dot com
A friend gave me a DEC VK100 (aka GiGi) recently. It's in really nice
shape, but it is missing the power supply. Before I try to kludge something
up with an ATX supply, I thought I'd ask if anybody knows where I might find
an official replacement.
Thanks,
Bob
I no longer have a use for the following 2 books. Free for the taking.
Solaris Internals: Solaris 10 and Opensolaris
Solaris Performance and tools
Email me at: tpisek at pobox dot com
Hello. I am visiting the Computer History Museum in California next week. I always wanted to check it out and spend a day there, but something else happens. Any recommendations of what is a must see at the museum and anything else classic computing nearby in one day only (March 15)?
Regards,
Tarek Hoteit
I am working on an unknown status Persci 299 drive and one of the two
drives is locked closed. Is this a "park" of some kind or is the drive
broken? If it's a parked drive (only the drive 0 side) how do you unpark
the drive? I can't seem to find any info on this. If I find anything I
will post my findings.
Thanks in advance
Bill
The DEC DF02 (300 Baud) and DF03 (300/1200 Baud) modems appear to be
singularly lacking in online documentation. In the case of the DF03 those
would be:
EK-ODF03-IP - DF03 Illustrated Parts Breakdown
EK-ODF03-PS - DF03 Modem Pocket Service Guide
EK-ODF03-UG - DF03 Modem Users Guide
Similarly for the DF02. (Note that the actual designations may use a zero
rather than a capital letter O in the 4th position; references are
inconsistent.)
Does anyone have access to these documents? The only, and only slightly,
useful technical documentation I've found are within the KC780 documentation
(EK-KC780-TM-007_Jul84.pdf), which illustrates the required settings of the
two pairs of DIP switches (or jumpers) on each of the two DF02/03 internal
modules but doesn't define any of those settings. The functionality of the
front panel push-button switches is not described either.
Leads, experience, etc. appreciated, thank you,
paul
