Connector 1J10 switch row pins
1J10 runs in reverse order: rows 8, 7 and 6 on pins 1-3, the key at pin 4, then rows 5 down to 1 on pins 5-9. Row wires are white with a tracer matching the row: 1 brown, 2 red, 3 orange, 4 yellow, 5 green, 6 blue, 7 violet, 8 gray.
Systems
Related tips
- Testing the switch rows with a clip lead
- System 11 switch matrix: connectors and chips
- A bad SR14 can short switch rows on System 11A and later
- Row or column error: CPU board or playfield?
- Fixing a dead switch row on the CPU board
- A whole switch row or column is dead
- How the Williams switch matrix is scanned
- Testing the switch matrix with a logic probe
Source: Repairing Williams System 11 Pinball 1986 to 1990, Part Three, Clay Harrell