Later System 11 slings and bumpers are processor fired
On later System 11 games the sling and bumper switches are in the switch matrix and the processor pulses the coil for a fixed time, so a stuck switch no longer burns the coil.
Systems
Related tips
- Sling or bumper locks on at power-up (System 11)
- Later System 11 moved relay and diode boards to the backbox
- Special solenoids dead after fitting an early System 11 CPU in a later game
- Sling or bumper locks on when a game starts
- System 11 coil outputs
- How the System 11 A/C bank select works
- Early System 11 games have no A/C banks
- 50 V coils on earlier System 11 games
Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer