Original sound board connector A6-J1

Pin 1 +12 V DC, 3 and 4 AC in, 5 +5 V, 6 ground, 7 speaker output, 8 sound 1, 9 sound 2, 11 sound 4, 12 sound 8; 2 and 10 spare.

Systems

• Gottlieb System 80

Related tips

• How the original System 80 sound board makes sound
• The original sound board self-test only works with S1 and S2 set opposite
• Supplies on the original System 80 sound board
• Original sound board option switches S1 and S2
• Fitting the original sound board PROM
• Fault-finding the original System 80 sound board
• No sound at all
• Distorted sound

Source: System 80 Service Manual, Gottlieb