11 Jul
2005
11 Jul
'05
8:47 p.m.
I just hooked up my Teleprint 390 to my laptop and it works like a
charm, almost 100%. I can type on my laptop and the output appears on
both the papertape as typed. And what I type on the Teleprint appears
on my laptop but what it doesn't do is when I feed it a papertape
output it on the laptop (only parts). It does output it correctly on
the Teleprint itself. Any idea's what might be wrong here ?
I am not a real technical person but willing to give anything a try :-)
Stefan.
At 00:35 11-7-2005, you wrote:
The best way to do this IMHO is to put the bits together and run a brush
dipped in dichloromethane along the cracks. This will disolve the plastic
and weld the parts together. Now take some cotton fabric, put it over the
repair on the inside of the case, and brush it over with the
dichloromethane. When the plastic has softened, force the fabric into it.
The result is a fairly strong repair...
-tony
-------------------------------------------------------
http://www.oldcomputercollection.com
Hi,
There is one Teletype call control unit that was used in the version that
had a built-in 20mA loop interface and no modem. This is the version
that was supposed to be directly connected to the computer's interface,
and it's the version most commonly found.
Is the 'call control unit' -- the
electronics chassis on the right hand
side -- the same?
On *my* 390 there is a slightly different "call control
unit". But I
have several 33s and nearly each has a different ccu. Normally you don't have to worry about that if you have a current
loop device in working
condition. There are also a lot of different wiring options for the
No, but it certainly matters if you have to repair it...
machine.....
The Teletype one I menitoned has one little PCB in the selector magnet
driver (the reader PSU, also on a PCB, is not strictly part of the CCU,
even). There's a lot of hard-wiring too.
The Data Dynamics one, IIRC, has 3 PCBs in it. One carries all the Molex
connectors at the back, which the mechanical parts plug into. The others
contain the reader PSU, singalling PSU, selector magnet driver, etc.
Almost no components no on the PSU.
where the mechaical bits are normal Teletype
ones, but the
call control unit is very different. It's built on a couple of PCBs (!)
and can handle both RS232 and current loop interfaces.
Hey, that's cool. PCBs
are normal in all CCUs. It will be hard to find schmematics for that.
Yes, but probably not too hard to trace out by hand if need be.
> Believe it or not, the Teletype manuals for the Model 33 do
have cleaning
and
lubrication charts for the cover...
:-)
... but there's no information about glueing together broken pieces of
grey plastic.... :-)