80/80A power supply test points and connector pins

Test points on the board: TP1 +60 V, TP2 +42 V, TP3 ground, TP4 +5 V and TP5 +8 V. Inputs on A2-J1: pin 1 +12 V DC, pin 2 ground, pins 7 and 8 the 60 V AC. Outputs: +5 V on J1 pins 5-6, J2 pins 1-2 and J3 pins 6-7; +8 V on J1 pin 9; +60 V on J3 pin 1; +42 V on J3 pin 3; ground on J2 pins 3-4 and J3 pins 4-5.

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 semiconductors
• 80/80A power supply capacitors
• How the 80/80A power supply makes its four voltages
• Check power supply outputs with the output cables unplugged
• Power supply ripple and regulation checks
• Both halves of the power supply limit their current
• Power supply output wrong
• Power supply LEDs show voltage present, not correct

Source: System 80 Service Manual, Gottlieb