Diagnostic test numbers

Key in these numbers: 90 runs the lamps, 91 the displays, 92 the solenoids, 93 sound, and 94 checks for stuck switches. Newer 6803 games add single lamp, single solenoid and game ROM ID tests.

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

• Trough opto numbering is backwards
• Key Eight Ball Champ adjustment numbers

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