Smart Switch pin 1 and pin 2
Hold the switch with the plain (component-free) side of the green board towards you. The right side, where the plug's lock tab is, is pin 2, the return, and has two wires; the left side is pin 1, the strobe. The plug has a rib and a small '1' on the pin 1 side.
Systems
Related tips
- Gottlieb Smart Switches (piezo)
- Never bend a Smart Switch blade
- Switch diodes are on the A17 board, not the switches
- Catching random switch closures
- Proving the driver board's switch strobes
- Lamp and switch matrix size and drivers
- System 3 slam switch is normally open
Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)