[GreenKeys] Model 19 progress and a few questions...

Pete Lancashire pete at petelancashire.com
Sat Aug 5 19:52:59 EDT 2017


2:  Where are contacts 9 through 12?  Looked and looked - no see ;p .


They are the contact block that goes to the printer. The printer "sits" on
the contacts.

BTW depending on the age  of your printer the selector magnets may be
different

http://www.rtty.com/development/teletype/model-15/index.html



On Sat, Aug 5, 2017 at 3:35 PM, E. <hanyou at xsmail.com> wrote:

>
> Hi all!
>
> For the past week, I’ve been working diligently at scoping out my Model 19
> (into the late night ;o ~) - trying to get it up and running.  I have 75%
> of the wiring checked out.  I know there’s a short in the perforator
> section that I’m going to find here soon (hopefully)… keeps on blowing the
> 62ma fuse that I have whenever I switch over to it.  Starting to look at
> the mechanical side of it, too… but first a few of questions as I go along:…
>
> (circled in attached image)
>
> 1:  What is the line jack and what does it do?  I think I’ve figured out
> where it is, but no clue what its purpose is.
>
> 2:  Where are contacts 9 through 12?  Looked and looked - no see ;p .
>
> 3:  The selector magnets have six wires coming off of their terminals.
> Two wires, I believe, go up to a resistor, mounted above the magnets (with
> three wires to/from the resistor) and then eventually lead to a switch next
> to it, which has six wires coming to/from it (top-left side of the main
> unit).  Can’t find this on any wiring diagrams that I’ve seen.  The switch
> is in the up position and I think it reads “S” (going off of memory - the
> teletype is in the basement right now).  I think I know what the switch is,
> but don’t know where to trace the wiring to with the ohm meter since it’s
> not on any diagrams ;o .  I guess my question is, help on locating, please
> :) ?
>
> 4:  Where are the motor control contacts?
>
> Right now as I type on the keyboard - with the keyboard switch in the
> upwards position, I get nothing on the typing unit… assume that it will
> work itself out when I get the perforator figured out (hopefully).  Also,
> the bar next to the the selector magnets are constantly moving when I have
> the unit on - not sure this is normal or not but the magnets check out fine
> with a 9 volt battery on multiple contacts.
>
> More questions later down the road, maybe... but once I get some of these
> figured out, then maybe things will work themselves out by then :) .  Thank
> you much in advance to anyone, willing to help ^^ !!!
>
> Sincerely,
> Eric :)
> -.- ----- .--- .. .-
>
>
> Progress so far:
> *Rewired one wire going from the perforator control contacts to a filter
> -> cam pulsing contacts because it was bad.
> *Unfroze the cam switches next to the trans contacts.
> *Properly looped the wires at the control relay.
> *Reattached a capacitor to a couple of resistors along the motor line.
> *Fixed the break contacts - one was bent.
> *Removed modified wiring.
> *Checked most, if not all resistors, a few capacitors, one coil and
> resistance on the majority of lines (looking for shorts and modifications).
> *Oiled and cleaned a bit.
>
>
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