Tommy: quick blinder test using expert mode

Steps

• Hold the extra ball button and press start: the game starts in expert mode with the blinders open for the whole game.
• Press the coin door slam switch: the blinders should close.
• The game's diagnostics also have a blinder test.

Systems

• Data East/Sega CPU Version 3b

Games

• The Who's Tommy Pinball Wizard

Related tips

• Tommy: blinders do not move (servo motor)
• Tommy: blinders dead with good voltages and wiring
• Tommy: CPU and display EPROM types and latest versions

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