To enter the service mode for any game in the collection, first load the game from the main menu. While the game is running, press start to pause the game, then press AND HOLD start to unpause it. With start still held down, press the Y button repeatedly. This will act as the "advance" button found inside the original arcade games, and will take you through a series of self tests, and finally to the options meu. Make your changes to the game options, then perform the same procedure and press Y (advance) to return to normal gameplay mode.