I'm looking at a schematic, trying to understand exactly how a Target Alpha starts games, and I'm curious what the difference is between the "replay" unit and the "coin" unit. I know the big stepper on the bottom board just beyond the chime unit is the the coin unit - at least that's what I've been calling it - so where and what is the replay unit? Some places seem to use them interchangeably, but that doesn't seem right - why would both names be on a schematic if that were true?

coin vs replay units (resized).JPG

Thanks Cody,
So I've been calling that thing in the head the credit unit...same thing as replay unit then?

Thanks pinhead - I noticed that it does that - though the official "player unit" is also in the head....and that (player unit) routes scores to the correct player, among other things, right? I'm just trying to get the nomenclature down so I know where to look for the right switches when I'm troubleshooting.

Thanks, pinhead! I have much to learn yet, but I'm enjoying the process.