Erasing printer memory
To erase volatile memory or buffered data in your printer, turn off the printer.
To erase nonvolatile memory, 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.
Select Sanitize all information on nonvolatile memory, and then select ERASE.
Select Start initial setup wizard or Leave printer offline, and then select Next.
Start the process.
Note: This process also destroys the encryption key that is used to protect user data. Destroying the encryption key makes the data irrecoverable.