I also just recently purchased a Bally GameMaker and it's relatively simple (comparatively) with it's nice TV screen and all, but with this nice jewel (or diamond I should say), all I have are a couple of numeric displays! I'll try to upload some pictures of the machine in case that helps anyone. Can anyone provide me with a manual (or manuals) to assist me in this endeavor, or provide me with instructions to perform these tasks? If you can't tell, I've just recently gotten into home slots.
Anyway, I would like to increase the volume, change the 'Credit Option' to Credit (or Player Initiated NonCredit), and check and set the date and time. I've just purchased an IGT Double Diamond Slot machine (for $375 - was that a good deal? - not that I care.