Help with resetting a 2001 Olympia Las Vegas pachislo

[smbryan812]

Here are some pics. Also, I thought it was a 2001, but it's a 2002. I have the key and have used it many times, but my key snapped this time when I tried to open it, but, I was able to unlatch it through the back. That being said, the key lock mechanism was stuck and after opening it through the back it sort of fell out the back and was in the extra coin bucket when the front opened? I cobbled it back together and put it where it should go, but I'm not clear if the little arm should be in between the 2 little sensors next to the red rest button on the back panel? I've tried the sequence given to me a later post, but no luck. Any help is appreciated. Thanks!