Column 1 switches and switch wire colours
Column 1 is the same on all these games: 1 plumb bob tilt, 2 ball roll tilt, 3 start button, 4 right coin, 5 centre coin, 6 left coin, 7 slam tilt, 8 high score reset. Column wires are green with a trace: 1 brown 2J2-9, 2 red 2J2-8, 3 orange 2J2-7, 4 yellow 2J2-6, 5 black 2J2-5, 6 blue 2J2-3, 7 violet 2J2-2, 8 grey 2J2-1. Row wires are white with a trace: 1 brown 2J3-9, 2 red 2J3-8, 3 orange 2J3-7, 4 yellow 2J3-6, 5 green 2J3-5, 6 blue 2J3-4, 7 violet 2J3-3, 8 grey 2J3-1.
Systems
Related tips
- Leon test: switch column drives (2J2)
- Switch matrix column test at 2J2 with Leon's code
- A few switches in a row or column all dead
- Which switches are not in the switch matrix
- Row or column fault on the playfield
- Odd behaviour from a short in the tilt switch column
- Switch column or row fault on the driver board
- Switches stuck on: board or playfield?
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Three, Clay Harrell (pinrepair.com)