You can delete the printer's internal memory data, such as downloaded fonts and macro print jobs, or jobs for password printing.
You can also set up from the printer’s control panel.
Settings > General Settings > System Administration > Clear Internal Memory Data > PDL Font, Macro, and Working Area
Enter the printer's IP address into a browser to access Web Config.
Enter the printer's IP address from a computer that is connected to the same network as the printer.
You can check the IP address of the printer from the following menu.
Settings > General Settings > Network Settings > (Standard) > Network Status > Wired LAN/Wi-Fi Status
Enter the administrator password to log in as an administrator.
Select in the following order.
Device Management tab > Clear Internal Memory Data
Click Delete for PDL Font, Macro, and Working Area.