[GreenKeys] Where's the clankity, clank, clank?

[John Lawson]

On Mon, 15 Oct 2007, John Lawson wrote:

>
>
> On Tue, 16 Oct 2007, Reggie Moody wrote:
>
>> Use to own a model 15 and fed signals to it with a Hal 6000.  Sold both and 
>> regretted it years later.  Now have a model 15, but when I plug it in, the 
>> motor runs but no out of control "clankity, clank, clank." Where do I start 
>> checking?
>
>
>  Your HAL supplied "loop current" to the selector magnets in the Mod 15...



   Boy did I mis-read your first post... the machine is NOT running 
open...    so please disregard all the loop-current stuff..

   if the motor is running, but the machine is still - and there is no loop 
current, then is the selector magnet stuck?  is the motor actually turning 
the typing unit shaft?

   When you press a key, does the transmitter unclutch and the cams scan 
the contacts?

   With the power off, can you rotate the motor by hands, and does the rest 
of the machine turn with it?

   This will narrow it down, but perhaps the first place to look is to be 
sure the range-finder is in the middle of it's range (as was just 
suggested) and that the magnet aramture is free.


   It's still possible that there is a small loop supply 'hiding' 
soomewhere, and it's not wired (or switched) in series with the keyboard.




   Cheers

John KB6SCO