If defects are seen on the page, follow the steps below:

a.If the Print Quality Diagnostic report shows faded, partial, streaked, or missing color bars or patterns, check for depleted ink cartridges, and replace the ink cartridge that corresponds to the defective color bar or color pattern. If there is no depleted ink cartridge, remove and reinstall all ink cartridges to make sure they are properly installed.

Do not remove the depleted cartridge until you have a new ink cartridge available to replace. For information about how to install new cartridges, see Replace the ink cartridges on page 99.

b.If you see white or dark lines where the arrows are pointing in Test Pattern 1, calibrate the linefeed. For more information, see Calibrate the linefeed on page 157.

c.If the lines in Test Pattern 2 are not straight and connected, align the printer. For more information, see Align the printhead on page 156.

d.If you see white lines in any of the color blocks in Test Pattern 3, clean the printhead. For more information, see Clean the printhead on page 155.

e.If none of the previous steps have helped, contact HP support to replace the printhead. For more information, see HP support on page 122.

134 Chapter 10 Solve a problem

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