17 Jun
2004
17 Jun
'04
7:39 p.m.
On Thu, 17 Jun 2004, William Donzelli wrote:
Here is a bit of good mainframe junk recently
obtained:
http://users.bestweb.net/~toober/images/3803.front.jpg
http://users.bestweb.net/~toober/images/3803.open.jpg
http://users.bestweb.net/~toober/images/3420.front.jpg
http://users.bestweb.net/~toober/images/3420.open.jpg
Basically, the big blue box is an IBM 3803 Tape Control Unit - the brain
that connects 3420 Tape Units (one of three is pictured) to an S/370 thru
a Bus & Tag channel. The 3803 and two of the 3420s are from 1972, and the
third 3420 may be from 1980. The 3803 apparently works - it was in service
quite recently - but all three of the 3420s have problems. Luckily, I
obtained a full set of MLMs (service binders) for the units, plus some Bus
& Tag cables.
Note the 3803 has a full control panel. It better, as it has more
electronics in it than most minis of the era.
I've got two 3420s and a 3803. I'm not sure what year they were
manufactured (how can I tell?), or if they work.
--
Sellam Ismail Vintage Computer Festival
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