HP Color Inkjet cp1160 Printer series - Manual (Page 117)

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cleaning printheads
If your printed pages are missing lines or dots, or if they contain ink streaks,
the printheads may need to be cleaned.
During the cleaning process, the printer also verifies the health of each
printhead. If a printhead has failed, its icon flashes on the LCD panel.
Follow these steps to clean the printheads:
1. Open the hp inkjet utility.
2. Select the Test panel.
3. Click the Diagnostic button.
A Diagnostic Page prints.
4. If the Diagnostic Page indicates a problem with a printhead, then
proceed to step 5.
For instructions on using a Diagnostic Page, see
diagnostic page .
5. Select the Clean panel.
6. Click the Clean button.
7. Follow the onscreen instructions.
Caution! Only clean printheads when it is necessary. Unnecessary
cleaning wastes ink.
For a description of the hp inkjet utility, see using the hp inkjet utility .