On start, the score reels and feature banks reset, then the sequence stops.

Gottlieb start halts after reels reset: S Armature switch

Cause: The switch worked by the start relay's armature (marked "S Armature" on the schematic) is dirty or misadjusted. It sits under the start relay and is only visible with the reset bank tipped up, but it can only be adjusted correctly with the bank down.

Checks

• Inspect the S Armature switch with the bank tipped up, then check its action with the bank in place.

Fix

• Clean it and adjust it; in practice this may mean unbolting the whole reset bank from the bottom panel.

Systems

• Electro-mechanical

Related tips

• 1960s-1970s Gottlieb start sequence (score reel games)
• Outline of a Gottlieb reset-bank game start
• Gottlieb reset-bank game won't start
• Using the start sequence to find where a reset stops
• 1975-78 Gottlieb multi-player start sequence (Ax/Bx games)
• Game never resets: bent coin door switch
• Start sequence of 1950s Gottlieb single players with light-box scoring
• Williams EM start-up sequence

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