It would be interesting to see if it would work, the company logo at the top of that document shows a pinball machine in the logo. Many of the last pinball machines designed had a 192 column DMD that was the same or very similar to the one used by WMS on their 40X dotmation machines. Those pinball machines have quite a high value now, some worth in the thousands of dollars. A lot of pinball hobbyists have needed to repair or replace that DMD in those type of pinball machines and I've heard more than once that they would buy a DMD from a WMS dotmation machine that was being parted out. But I don't know if they had to make any other mods to go along with that. So maybe it's possible that the opposite is true, that you can use a pinball DMD of that size in the WMS dotmation machine.
It seems like anymore it is not often we hear of a WMS 40X machine dot matrix display becoming available from a machine getting parted out.
Will the WMS dotmation machine play if the dot matrix display is dead, you just get no animation that makes the game so fun? Or does the game software sense that the DMD is dead and the machine faults?