Zero audits, restore factory settings or auto-cycle with the DIP switches
Steps
- With the game in attract mode, set the coin door switch to Manual-down.
- Press Advance and keep the coin door open.
- Set upper-bank DIP switches 8, 7 and 6 all to off.
- Turn on just one: switch 8 zeroes the audit totals, switch 7 restores factory settings, switch 6 starts auto-cycle diagnostics.
- Press the Master Command button on the CPU board (the upper button, above the diagnostic button). The CPU LEDs light while it is held.
- Turn the game off and on twice to get back to attract mode.
- Removing the AA batteries for about 10 seconds also clears audits and settings.
Systems
Related tips
- Late System 7 CPU boards lack LEDs and DIP switches
- Reading the software ID in audit 00
- Replacement CPU board: game won't start though tests pass: DIP switches reversed
- How System 3 audit mode looks
- Boots into audit mode every power-up with good batteries: bad 5101 RAM
- System 3 audit mode looks different
- System 6 and 7: coin door must be open to change settings
- Reading audit 00: game number, flipper ROM version and software revision
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Two, Clay Harrell (pinrepair.com)