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Williams System 3-11 diagnostic switch board
CALIFORNIA WARNING
This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
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.
Reference:
77-WDSI
Select manufacturer to view game compatibility
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