Game check-out, part 2: what a healthy power-up looks like

Steps

• Switch on: the general illumination lights at once.
• Both LEDs on the power supply light.
• About five seconds later the Tilt and Game Over relays pull in briefly and drop out.
• The score displays come up showing zeros.
• The coin lockout coil pulls in.

Systems

• Gottlieb System 80
• Gottlieb System 80A

Related tips

• Scores light at once and the status display stays dark
• Bookkeeping totals or score levels are wrong or missing
• Random game over, lost credits or erratic features
• How the control board reset circuit works
• Control board power-on checks
• Control board A1-J1 power connector
• Power supply connectors A2-J1, J2 and J3
• Game check-out, part 4: coin chutes and meters

Source: System 80 Service Manual, Gottlieb