Control board A1-J4 to driver board pinout
A1-J4 and A3-J1 are wired pin for pin. Ground on 1 and A, +5 V on 2 and B. Lamp data LD1-LD4 on pins 7, 6, 4 and 5; data strobes DS1-DS12 on C, 3, E, D, H, F, K, J, M, L, N and P. Knocker on 21, counters on 22-24. Coils: R sol 5, S sol 1, T outhole, U sol 6, X sol 2. Sound lines Y (8), Z (4), A-bar (2), B-bar (1).
Systems
Related tips
- Driver board A3-J5 and A3-J6
- Control board A1-J1 power connector
- Driver board A3-J2 backbox lamps
- Driver board A3-J4 coil outputs
- A1-J4, A3-J1 and A3-J3 are double-sided edge connectors
- System 80 control board chips
- How the System 80 driver board is laid out
- How driver board lamp latches work
Source: System 80 Service Manual, Gottlieb