1975-78 Gottlieb multi-player start sequence (Ax/Bx games)

S relay locks in, runs the motor and advances the play meter. With four players possible, the coin unit steps down to zero and back up to the one-player position. The Ax relay is energized through switches on S and U and motor switch 2C, and the R hold relay pulls in, removing power from the game over relay. The backbox player unit then steps to Z1, where the Z1 relay and motor zero the player 1-2 reels, then to Z2 for players 3-4; a normally closed top switch on each Z relay lets the unit move on. At the player 1, ball 1 home position (switches P5A/P5B) the Ax relay and bonus unit reset, the O relay kicks the ball out, and the ball crossing the trough switch releases the first-ball relay so the game scores.

Systems

• Electro-mechanical

Related tips

• Start sequence of 1972-78 Gottlieb single players without a reset bank
• Start sequence of 1950s Gottlieb single players with light-box scoring
• 1960s-1970s Gottlieb start sequence (score reel games)
• Williams EM start-up sequence
• Outline of a Gottlieb reset-bank game start
• Bally mid-1970s EM start-up sequence
• Gottlieb start halts after reels reset: S Armature switch
• Using the start sequence to find where a reset stops

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