To erase volatile memory or buffered data in your printer, turn off the printer.
To erase non‑volatile memory or individual settings, device and network settings, security settings, and embedded solutions, do the following:
From the control panel, navigate to:
Settings > Device > Maintenance > Out of Service Erase > Sanitize all information on nonvolatile memory
For non-touch-screen printer models, press 
to navigate through the settings.
Depending on your printer model, select ERASE or Continue.
Follow the instructions on the display.