[Milsurplus] AN/UGC-143A teleprinter parts/manual wanted

[Nick England]

This is a circa 1988 machine I am trying to revive with not enough
technical info. To my surprise the control unit and the printer appear to
work - but not the keyboard.
A description and photos of the beast are at
http://www.navy-radio.com/tty/ugc143a.htm

It, of course, uses multiple microprocessors - It will pass BIT diagnostics
except that evidently the printer Z80 isn't talking to the keyboard Z80 so
it doesn't think that the keyboard is actually plugged in. I believe that
the keyboard Z80 is alive because the one-line display on the keyboard says
PLEASE WAIT.
I have an operation and troubleshooting manual which covers the built-in
test routines, but that stops at the "replace the keyboard assembly" stage.

So does anyone have a spare keyboard or a tech manual with schematics that
I could borrow?
This is a very long shot, but you never know what someone has accumulated.

Cheers
Nick England K4NYW
www.navy-radio.com
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