Flipper cabinet opto switch boards

From mid Addams Family on, the flipper buttons use opto boards instead of leaf switches. Each board carries two U-shaped optos, one for the lower and one for the upper flipper. A-17316 (5768-13469-00) uses 4-leg optos (WPC-S and earlier); A-20207.1 uses 5-leg Schmitt-trigger optos (WPC-95) that resist dust better. Either board fits any game with opto flipper buttons.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• Testing optos in switch edge test
• Upper flipper switch reported bad on a game with no upper flipper
• One flipper dead and its button fails switch test: dirty flipper button opto board
• Fliptronics: flipper button does not register in switch test
• Where WPC games use opto switches
• Fliptronics flipper does not work: test the flipper opto board
• Upper flipper sometimes weak, then buttons dead after cleaning: replace the flipper optos
• Creature from the Black Lagoon: "check switch F6 U.R. Flipper" error

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)