Check your current firmware version by printing a settings report (Menu > System > Report > Configuration).
If it’s glitching? Find the 2015-era firmware file. That was the golden year for this machine. Have you bricked a printer with a bad update? Or did you successfully revive a SCX-4623F using the boot loop trick? Drop a war story in the comments below.
And for years, this little monochrome workhorse delivered. It’s the Nokia 3310 of the printer world—ugly, tough, and reliable.