Games without the keypad use the flipper and start buttons
Atlantis, Truck Stop, Blackwater 100 and Escape from the Lost World have no keypad; their tests and adjustments are driven from a second pair of cabinet flipper-style buttons and the start button.
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Games
Related tips
Source: Repairing Bally 6803 Pinball Games from 1985 to 1989, Clay Harrell (pinrepair.com)