For all printer errors reporting a toner cartridge failure on the front panel:
Record the error displayed on the front panel.
Press the i button to view information about the error and record the error code number listed at the end of the information text.
Open the printer front
door.
Pull out the toner cartridge.
Insert a new toner cartridge.
Follow the installation instructions that come with the cartridge.
Close the printer front
door.
If the problem persists, access PhaserSMARTŪ. PhaserSMART is a powerful Internet-based diagnostic tool that automatically delivers the latest support solutions with a few mouse clicks. (English only)