Flipper EOS switch role from Jurassic Park on

From Jurassic Park the board still uses a fixed-length power pulse, but a normally closed EOS switch is wired in series with the cabinet button. If the ball knocks a held flipper back and opens the EOS, the board fires another power pulse so the flipper stays up.

Systems

• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Games

• Batman Forever
• Baywatch
• Guns N' Roses
• Jurassic Park
• Last Action Hero
• Mary Shelley's Frankenstein
• Maverick
• Tales from the Crypt
• The Who's Tommy Pinball Wizard
• WWF Royal Rumble

Related tips

• Protect the flipper boards when lifting the playfield
• Flipper board LEDs show the cabinet buttons are seen
• Solid state flipper flutters when held
• Solid state flipper does not work: fuses and fuse clips
• Jurassic Park, Last Action Hero, Tales from the Crypt: flipper dead from its EOS switch
• Solid state flipper goes up but will not stay up
• Flipper stuck up with power on (Playboy and later)
• Flipper board torn up after raising the playfield

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part One, Clay Harrell (pinrepair.com)