Driver board A3-J3 lamp groups and relays

A3-J3 carries the playfield lamp outputs L12-L51 and their shared grounds: Z for L12-L19, 17 for L20-L27, U for L28-L35, S for L40-L43 and C for L44-L51 (Z, 17 and U are 16 gauge). It also carries the Game Over relay on A-bar and the Tilt relay on B-bar.

Systems

• Gottlieb System 80

Related tips

• How driver board lamp latches work
• Checking lamp signals during test step 16
• None of the controlled playfield lamps work
• One or more controlled lamps never light or stay on
• A driver board output is stuck on or dead
• Driver board A3-J5 and A3-J6
• Auxiliary lamp driver boards
• How the System 80 driver board is laid out

Source: System 80 Service Manual, Gottlieb