1960s-1970s Gottlieb start sequence (score reel games)

The replay button or a coin energizes the S relay, which locks in through its own switch and a motor switch, pulls in the main hold relay, runs the score motor and advances the play meter. Through the motor the secondary start relay SB energizes the reset relays Z1 and Z2 (just Z on one- and two-player games), which zero the reels through the score relays; SB also resets the player unit, and the U relay returns the reset bank (Ax/Bx on later games), the bonus unit and any drop targets to their start state. More coins add players via the PBx relays. The O relay then kicks the ball to the shooter lane, but only once the bonus unit zero switch is closed; the P relay re-serves balls after each drain.

Systems

• Electro-mechanical

Related tips

• Gottlieb start halts after reels reset: S Armature switch
• Bally mid-1970s EM start-up sequence
• 1975-78 Gottlieb multi-player start sequence (Ax/Bx games)
• Williams EM start-up sequence
• Start sequence of 1972-78 Gottlieb single players without a reset bank
• Start sequence of 1950s Gottlieb single players with light-box scoring
• Gottlieb reset-bank game won't start
• Outline of a Gottlieb reset-bank game start

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