Getting at score motor switches, and slowing a sequence down

Most score motors are held by cotter or hair pins, so they can be hinged up or (usually with three pins) lifted right off the frame for access. Most also have a plug in the motor's power lead: unplugging and replugging it lets you run a sequence in short bursts and watch each step.

Systems

• Electro-mechanical

Related tips

• Check the score motor switches before power-up
• Score motor switch numbering (Gottlieb and Bally)
• Why the score motor home switch arcs on opening only
• What the score motor does
• Finding a Gottlieb score motor switch from its schematic name
• Leave score motor switches alone unless clearly faulty
• Score motor keeps running at game over, O relay stays in: score motor 2C switch
• How the score motor resets the reels

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)