Diode direction on three-lug flipper coils

Copy the old diode's direction when replacing one, assuming it was right; a reversed diode protects nothing. On two-lug coils the power lug usually has the thicker wire. Three-lug flipper coils are harder to work out, so check the schematic.

Systems

• Data East CPU Version 1/2
• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Related tips

• Flipper coil resistance readings
• Flipper coils 090-5020-02 and 090-5020-20
• Checking a pre-solid-state flipper coil
• Measuring voltage at a solid state flipper coil
• Reading Data East / Stern flipper coil numbers
• Flipper sometimes stays up until power off: broken coil diode
• Expected resistance of common Data East/Sega flipper coils
• Flipper coil runs very hot (Time Machine and earlier)

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