Dell B5460dn Mono Laser Printer - Manual (Page 144)

Warning—Potential Damage: Restoring factory defaults returns most printer settings to the original factory default
settings. Exceptions include the display language, custom sizes and messages, and network/port menu settings. All
downloads stored in the RAM are deleted. Downloads stored in the flash memory or in the printer hard disk are not
affected.
From the printer control panel, navigate to:
> Settings > > Settings > > General Settings > > Factory Defaults > > Restore Now >
Managing the printer 144