Power supply connectors A2-J1, J2 and J3

A2-J1: pin 1 +12 V DC in (16 gauge), pin 2 ground (16 gauge), pin 5 +5 V, pin 6 +5 V display offset, pins 7-8 the 60 V AC, pin 9 +8 V display offset. A2-J2: +5 V on 1-2, ground on 3-4. A2-J3: +60 V on 1, +42 V on 3, ground on 4-5, +5 V on 6-7.

The display supply carries 60 V DC (and 42 V DC); keep fingers off the power supply and display boards while the game is on.

Systems

• Gottlieb System 80
• Gottlieb System 80A

Related tips

• 80/80A power supply test points and connector pins
• 80/80A power supply semiconductors
• 80/80A power supply capacitors
• Check power supply outputs with the output cables unplugged
• How the 80/80A power supply makes its four voltages
• Power supply ripple and regulation checks
• Control board A1-J1 power connector
• Both halves of the power supply limit their current

Source: System 80 Service Manual, Gottlieb