HP Deskjet 450 HP Deskjet 450 - User Guide - Page 42

The ink in the print cartridges has been carefully formulated to ensure superior quality and compatibility with your printer. HP is not responsible for damage to the printer that results from modifying or refilling the print cartridges. There are three cleaning levels available: Level 1 cleaning is the quickest and uses the least amount of ink. Level 2 cleaning should be performed only if level 1 cleaning was insufficient. Level 3 cleaning is the most thorough and consumes the most ink and time. Level 3 cleaning should be performed only if level 2 cleaning was insufficient. After each cleaning, the printer prints a test page so that you can check the print quality, and the Toolbox prompts you to perform the next level of cleaning if necessary. Do not clean the print cartridges unless necessary; cleaning the print cartridges uses ink and shortens the life of the print cartridges. To clean the print cartridges If you have the printer driver or Toolbox installed, you can clean the print cartridges from the Services tab in the driver or the Printer Services tab in the Toolbox. You can also clean print cartridges by using the printer buttons. The following procedure shows you how. Cleaning the print cartridges via the printer buttons does not produce a test page. To perform a level 1 cleaning 1 Press and hold down the Power button. 2 While holding down the Power button, press the Cancel button twice. 3 Release the Power button. The printer begins the print cartridge cleaning process. To perform a level 2 cleaning 1 Press and hold down the Power button. 2 While holding down the Power button, press the Cancel button twice and then press the Resume button once. 3 Release the Power button. The printer begins the print cartridge cleaning process. 6-2 ENWW