Step one: Retry the print job
The problem may occur only rarely. If you have not seen it in other printouts, try again.
Step two: Increase the print quality mode
If reprinting did not help, try increasing the print quality mode.
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In the application you are printing from, click File , and then click Print .
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Make sure the printer is selected, and then click Properties .
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Select the Paper/Quality tab.
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In the Print Quality area, choose the next higher quality setting. If the current setting is Draft, choose Normal. If the current setting is Normal, choose Best.
Step three: Print in grayscale (black area streaking only)
If the streaks are in a black area of a black and white printout, change to grayscale printing.
NOTE:
This step does not apply to color printouts.
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In the application you are printing from, click File , and then click Print .
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Make sure the printer is selected and click Properties .
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Click the Color tab, and select Print Grayscale and High Quality .
Step four: Clean the printheads
If the print quality is still bad, clean the printheads.
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Make sure the printer is loaded with unused white paper.
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Open HP Solution Center .
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Click Settings , Print Settings , and then select Printer Toolbox .
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Click the Service Tab .
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Click Clean Printhead , and then click Clean .
Step five: Align the printheads
If the print quality is still bad, align the printheads.
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Make sure the printer is loaded with unused white paper.
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Open the printer Toolbox , and select the Printer Services tab.
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Click Align Printheads . The Align Printheads window opens. Click Align .
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The printer prints an alignment page. The lines in the patterns should appear to be straight. Click OK when the page finishes printing.
Step six: Calibrate the linefeed
If the print quality is still bad, calibrate the linefeed:
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Make sure the printer is loaded with unused white paper.
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Open the printer Toolbox and select the Printer Services tab.
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Click Calibrate Advanced Linefeed . The Advanced Linefeed Calibration window opens. Click OK .
Step seven: Replace one or both printheads
If the print quality is still bad after performing all the above steps, one or both of the printheads will have to be replaced. Print a PQ Diagnostic page to see which printhead should be replaced.
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Make sure the printer is loaded with unused white paper.
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Press the Setup button.
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Press 1 and * simultaneously.
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Look at the color blocks labeled Test Pattern 2. Some or all of them could show white horizontal streaks. If none of the blocks are streaked, the printheads are okay.
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If the Black block has lines – replace the KY printhead.
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If the Cyan block has lines – replace the MC printhead.
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If the Magenta block has lines – replace the MC printhead.
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If the Red block has lines – replace the KY printhead.
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If the Green block has lines – replace the KY printhead.
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