Greg, you won't find any help or support for these machines, when I bought mine it was spares or repair. Previous owner had spent quite a lot of money trying to fix it & had no joy. He had an engineer up looking at it but the guy was seriously struggling. After I bought it I spent quite a bit of time trying to find support for it, Spandex who sold & maintained them told me they had no technical documentation for them anymore even though I was prepared to buy it.
I'm sure it would have been a fairly simple fix as the machine was running properly on 2 axis but slowly on the third like it wasn't receiving enough power but with so little info it was just easier to remove all the electronics & replace them with modern day drivers & BOB.

Basically I've got no info on the machine at all but did take a lot of pictures before I ripped the controls out.