Modulynx stepper driver

Hi to the list,

I have just been given a two axis SloSyn Modulynx Mitas PMS085-D050
stepper driver. A goggle gave only an offer of sale of one, and some
fancy physics users of it.

BIG transformer, bridge, and a pair of caps. Two driver boards, each
about 8" x 8", and an interface board with a pair of DB25 connectors.
Also what looks like a switcher power supply. Six wires to barrier
strip for each motor, although with all the power transistor packages,
I'm guessing it's bipolar.

A schematic or interface diagram would be most welcome!

Alan KM6VV