Nevermind...I'm glad your machine's display is working now, but you need to get the cabinet receiver optic to see the door emitter, in order for the machine to work.
Earlier, (Reply #67) I asked you to shut OFF the machine, move the reels by hand, then power the machine back ON.
Your MPU should have returned the reels back to their original position after you moved them.
It doesn't matter if the door was open or closed, the reels should have moved.
That didn't happen.
Go shopping.
You need a new MPU.