How the EM match feature works and is disabled
On EM games the match unit is a ten-position rotating disc advanced one step each time certain bumpers or switches score, so where it stops at game end is random. Most EMs have a plug in the backbox or on the cabinet floor that turns the match off; solid-state games have a match on/off adjustment.
Systems
Related tips
- Bally 00-90 match unit
- EM match unit stuck on one number
- Gottlieb AS relay (miniature match stepper)
- Williams 1970s match unit stops advancing
- Game will not work: stepper unit binding
- EM delay relay with a lamp on it misbehaves
Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)