Originally Posted by
jschmitt
There is another thread on rewiring a 3400 to stepper drivers and use a computer to control it, like you would a home built cnc. As I remember there was diagram. If you go this route, you need unipolar drivers, or you will need to wire it for bipolar. If you don't understand, you will need to do some research
If you have the controler you can try reviving it. Another thread mentioned putting an ISA video card in an empty slot in the controller, hooking up a moniter, changing the memory battery, then setting date and time, allowing the controller to finish booting. I think this is why most of these units were junked.