9. Slide the cartridge into the printer guide channels. To make sure the toner cartridge is secure, gently press both ends of the cartridge until the cartridge
10.Close the front cover.
11.Reset the toner counter. See “Machine Information Menu” on page 109.
12.If you removed the optional envelope feeder, reinstall it. See “Installing the Envelope Feeder” on page 174 for instructions.