Expected CPU LED flashes by game

A healthy board flashes the green LED 8 times on the single-ROM games (Eight Ball Champ, Beat the Clock, Lady Luck, also Cybernaut and Hot Shotz) and 9 times on the two-ROM games (Motordome through Dungeons & Dragons). The last four games (Atlantis, Truck Stop, Blackwater 100, Escape from the Lost World) show only a faint flicker when all is well and flash only if a test fails.

Systems

• Bally 6803

Related tips

• CPU LED stops just short of the full count
• Eight-flash LED code meanings
• Nine-flash LED code meanings
• How to read the flashes on the last four 6803 games
• Missing lamp fuse changes the flash count
• CPU never starts: check the reset line at U1 pin 6
• Game boots but will not take credits or start
• Nonsense adjustment values after a battery failure

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