Entering System 1 audits and tests
Steps
- Press the white play/test button inside the coin door; after about a second "0" shows in the ball/credit display and the audit value in the score displays.
- Press again to step through numbers 0 to 13.
- For audits 0-10, the black reset button on the CPU board clears the value shown.
- To leave, open the slam switch or close any tilt switch.
Systems
Related tips
- What boards a System 1 game has
- Spare transistors for System 1 boards
- Spare chips for System 1 boards
- System 1 CPU board connectors
- Aftermarket System 1 CPU boards
- The mandatory System 1 ground modifications
- Powering a System 1 CPU board on the bench
- System 1 switch matrix layout
Source: Gottlieb System 1 Pinball Repair from 1977 to 1980, Clay Harrell (pinrepair.com)