Gottlieb board and connector numbering

The "A" number names the board and the "J" number the connector on it, so A1-J3 is CPU connector J3. A1 is the CPU, A2 the power supply, A3 the driver board, A4 the score displays, A5 the four-digit status display and A6 the sound board where fitted.

Systems

• Gottlieb System 1

Related tips

• System 1 CPU board connectors
• System 1 driver board connectors
• Connector parts to keep for System 1 repairs
• Pins and tools for re-pinning System 1 connectors
• Re-pinning a crimped card-edge connector
• Many lamp faults are driver board connectors
• Every System 1 card-edge connector needs re-pinning
• Gottlieb System 1 and System 80 power harnesses look alike: check before fitting

Source: Gottlieb System 1 Pinball Repair from 1977 to 1980, Clay Harrell (pinrepair.com)