This eprom is for an Automatic Products 120 Series. This item is intended for trained service personnel.

When this chip is installed, it is common for the board to revert to the "Out of Service" screen.

If this occurs, follow the machines reset instructions in the operating manual. It is typically in the security menu section. 

Anytime new software is updated in a machine, it is a good idea to have the latest version of the operating manual on hand.