It looks like some of the statistical displays. DO = door open, but the numbers look somewhat garbled. The other I think is showing the game version information. Error messages on an M slot will give you a "Tilt call attendant" scrolling message on the display, and when the reset key is turned will tell you what the error is. The reset switch on a M slot is bi-directional, so if bypassed you would need two pushutton switches, one for each direction. It's probably best to get the switch hooked up the way it belongs, and get a copy of the M slot manual for starters.