Old Breakout Board trying to identify

Need a little help. Bought a used CNC Router with Mach3. Do not know what model or make of the Breakout/Controller boards is. It works fine for controlling the stepper motors and has inputs for limit switches and E-stop. Except the inputs are not being seen by Mach 3 or Linuxcnc. The led's come on when the switches close but no indication ion Mach 3. I hope someone out there can help me for the make and model of this board. In the mean time I bought a cheap breakout board to get the machine running correctly. I Hope. 

I had a look for the board as its not one I recognise in ~10 years I've been involved with cnc and did not find anything.

Given the voltage rating it will be a US only market board. Looking at the board detail its not something I've seen from any other manfacturer (board makers like cnc4pc, or PDMX, warp9, texas microcircuits etc all tend to use a similar pattern / style in their board design... you see similar components repeated / connectors etc even if they make or design boards for someone else).

I am guessing that your problem will be the jumpers in the centre of the board. I am guessing that these may provide 5v to the DIP optoisolators. you may need to study the board a bit. you'll see that the jumper for the output is set differently to the inputs side of the board.

Sometimes 5V is provided from pin 26 of the IDC connector (the black rectangular one in front of the LPT blue connector) and that jumper could be to switch from board 5v to the IDC connector supplied 5v.

I'd suggest not changing anything until you study the board.

You may need to get a volt meter out to measure the voltages around those jumpers to see what the difference is between the two jumper settings.

A rear view of the board will help as Tommy asked earlier.

 

Here is the back of the board.
Thanks for the help. 

not a lot of use the bottom image is other than being able to trace out the tracks....

I suspected that it used the Centronics Connector, but wasn't sure until now
karusisemus.files.wordpress.com/2016/07/centronics.png

Tommy pointed out something I was not aware of using the centre tap 115V transformer for 230v (I am aware it's done + how to do it.... just was not aware it was so common).

However looking at the rear traces it's set for 115V input voltage, so likely to be US market manufactured (or japan? {unlikely but I think they run on 100v})

I am out of ideas.

I was looking at tracing the jumpers out but it's probably best done with a volt meter.