I have my first IGT Gameking I-game. has 3902 MPU. I have the original 3902 board that has some Joker Poker and Keno games. It works properly and have utilized the keychip 22 to change the 12 allowable games. Additionally, I bought a second 3902 with a bunch of other game Poker/Black Jack/Keno and Slots (a 55 game chip set). I would prefer the new board and games in my machine. However, when I swap out the boards, a different style keychip menu comes up. It allows me to do most of the same setup as my other board except it doesnt seem to have a place to change the setting to disable the coin acceptor. I can disable the hopper. When I go to put the machine into play, I get a "coin - in Jam " error message. Am I missing something in the key chip settings? Do I need a different keychip than the 22? I can see everyting else behind the error message. It lets me set the whole thing up but just cant get to play with the uncleared issue. Any assistance would be greatly appreciated. Thank you

Read this. Many of your current questions and probably future questions are likely here. 

https://newlifegames.com/nlg/index.php?topic=21511.0

Cascade works great for me. 

Quote from: David Walz on April 23, 2024, 05:38:38 PM

I sure would like to find out what the original amount was with this machine. Does the model number have some sort of decoding?

No....they don't have manufacture build labels, like on automobiles.
Whatever decoder guide that's sandwiched in between the coin-in optics and the size of the slot hole on top of the button deck pretty much tells us what denomination the cabinet was originally set up for.

Take the coin-in optics apart and show me a photo of both sides of it.
There WILL be a part No. molded on the plastics.
You need to take the coin-in optics apart anyways...there could be dust balls starting to block up the three optic holes.... those should be cleared of any debris so the optical emitter beams can go thru to be picked up by the receiver optics.

If you have the coin hopper for the machine, place a quarter on the top of the wheel shelf and snap a photo of the coin sitting in between the wheel nibs.
I could tell you what hopper wheel you have.

Thanks.
The hopper is missing, I am going to be purchasing one during the rebuild of this machine. I will get some photos of the optics ASAP.

I threw it in the dishwasher! It came out nice.