HP LaserJet Pro 400 Printer M401 series - Manual (Page 90)

3. Grasp both sides of the toner cartridge and
distribute the toner by gently rocking the
cartridge.
CAUTION: Do not touch the shutter or the
surface of the roller.
4. Bend the tab on the left side of the cartridge
until the tab breaks loose. Pull the tab until all
the tape is removed from the cartridge. Place
the tab and tape in the toner cartridge box to
return for recycling.
5. Align the toner cartridge with the tracks inside
the product, insert the toner cartridge until it is
firmly seated, and then close the toner
cartridge door.
6. Installation is complete. Place the used toner
cartridge in the box in which the new cartridge
arrived. See the enclosed recycling guide for
recycling instructions.
78 Chapter 4 Manage and maintain ENWW