After reading loads here, I'm looking for some solid advice on converting a Boxford A3 HSRi2 router to work on Mach 3.
Would be looking at the MX4660 driver, and removing the old motherboard and driver. (see history below)
I can't get a schematic, but think I need to test each cable to find out what it is, match it to the new driver, and set it up.
Is it that simple?

History:
Machine currently works okay, but I don't like the Boxford software which is very basic, and needs hard resetting frequently. I For example, if accidently set on machine to manual mode, the CNC does not communicate with PC, so if you attempt to run a job, it gives an error message "machine not responding" and requires a hard reset.