HP Deskjet 450 Mobile Printer series - Manual (Page 43)

ENWW 6-2
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.
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.
To perform a level 1 cleaning
1 Press and hold down the P OWER BUTTON .
2 While holding down the P OWER BUTTON , press the C ANCEL BUTTON twice.
3 Release the P OWER BUTTON . The printer begins the print cartridge cleaning
process.
To perform a level 2 cleaning
1 Press and hold down the P OWER BUTTON .
2 While holding down the P OWER BUTTON , press the C ANCEL BUTTON twice and
then press the R ESUME BUTTON once.
3 Release the P OWER BUTTON . The printer begins the print cartridge cleaning
process.
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.
Do not clean the print cartridges unless necessary; cleaning the print cartridges
uses ink and shortens the life of the print cartridges.
Cleaning the print cartridges via the printer buttons does not produce a test
page.