Using the keypad to view and change settings

Steps

• Press the coin door test button. Later games first check for stuck switches (test 94) and beep each second if any are closed; press the button again to move on.
• The lamp test (90) runs; press KEYBD/CLR to leave it and reach keypad mode, shown as 00 on the match/credit display.
• On alphanumeric games, keys A and B scroll the tests and categories and ENTER selects.
• Type the register number and press ENTER; its value shows in the player 1 display.
• For an adjustment, type the new value (it echoes in player 2) and press ENTER. A buzz means the value is not allowed.
• Press CLR to restart the self-test, or GAME to keep the changes and return to attract mode.

Systems

• Bally 6803

Games

• Beat the Clock
• Black Belt
• City Slicker
• Dungeons & Dragons
• Eight Ball Champ
• Hardbody
• Heavy Metal Meltdown
• Lady Luck
• Motordome
• Party Animal
• Special Force
• Strange Science

Related tips

• A missing keypad locks you out of the menus
• Keypad connector pin colors
• Keypad keys are switch matrix crossings
• Missing lamp fuse changes the flash count

Source: Repairing Bally 6803 Pinball Games from 1985 to 1989, Clay Harrell (pinrepair.com)