Williams System 3-11 diagnostic switch board


New Diagnostic Switch Board eases access to service switches for field and bench check of Williams System 3 through 11 CPU boards.

Small press-fit board attaches to CPU boards and acts as the Auto Up, Advance and Memory Protect swtiches.

To install, simply push the board onto connector 1J4 on your CPU board.

Left side switch is for the Memory-Protect switch at your coin door.
Center button is the 'Advance' button on your coin door.
Right side switch is the "Auto-Up / Manual Down

Stays in place and makes it easy to move through the menus using the advance button.


  • 77-WDSI

0.077 lb


In Stock