HP LaserJet Enterprise MFP M635 User Guide - Page 216
Resolving mono print quality problems, Introduction, Troubleshoot print quality
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Resolving mono print quality problems Introduction Use the information below to troubleshoot print-quality and image-quality problems on mono (black and white) HP LaserJet Enterprise printers. The troubleshooting steps can help resolve the following defects: ● Blank pages ● Black pages ● Curled paper ● Dark or light bands ● Dark or light streaks ● Fuzzy print ● Gray background or dark print ● Light print ● Loose toner ● Missing toner ● Scattered dots of toner ● Skewed images ● Smears ● Streaks Troubleshoot print quality To resolve print-quality issues, try these steps in the order presented. To troubleshoot specific image defects, see Troubleshoot Image Defects. Update the printer firmware Try updating the printer firmware. For more information, go to www.hp.com/support and select the option to Get software and drivers. Then follow the prompts to navigate to the firmware download for the printer. Print from a different software program Try printing from a different software program. If the page prints correctly, the problem is with the software program from which you were printing. Check the paper-type setting for the print job Check the paper type setting when printing from a software program and the printed pages have smears, fuzzy or dark print, curled paper, scattered dots of toner, loose toner, or small areas of missing toner. ENWW Resolving mono print quality problems 203