It had a seperate optic board. If you need a new board, please see this thread;
http://forum.arcadecontrols.com/index.php?topic=48855.0I got mine last August. It fix great and works very well. I had tried soldering my original board so I could connect it to an Opti-pac. This was, by far, the best solution for the money spent and the time involved. fixumdude was great to deal with.
If you want/need the original board, I can send you mine. No posting pics about the soldering job though.

Not sure it would work though.