The CPU to driver board harness
The single-sided harness between the CPU and driver boards often has corroded pins because its CPU end sits near the battery. New harnesses for this link and for power supply to CPU are made with tin crimped pins, Trifurcon pins on the supply header, 22 AWG signal and 18 AWG power wire.
Systems
Related tips
- System 1 CPU board connectors
- System 1 driver board connectors
- CPU connectors that fail most
- Testing a driver board with a Ni-Wumpf CPU
- Many lamp faults are driver board connectors
- Game over relay won't hold in: poor 5 V pin from the CPU to the driver board
- Testing a CPU lamp circuit by grounding its driver
- Aftermarket System 1 CPU boards
Source: Gottlieb System 1 Pinball Repair from 1977 to 1980, Clay Harrell (pinrepair.com)