HP R40 User's Guide download pdf (Page 18)

3-4 Troubleshooting and Maintaining Your HP OfficeJet

How to Clean Cartridges

Use the Clean Cartridges feature when the self-test page shows streaking or

white lines through any of the colored bars. Do not clean cartridges

unnecessarily. This wastes ink and shortens the life of your print cartridges.

To clean the cartridges:

Press Menu until “Clean Cartridges” appears on the display.

Press Select/Resume.

The message “Cleaning” appears on the display, and a sample page is

printed.

NOTE

If copy or print quality still seems poor after you clean the cartridges, replace the one,

black or color, that is affected.

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HP R40 User's Guide Page 18