HP 1320tn HP LaserJet 1160 and 1320 Series - User Guide - Page 114
Dropouts, Vertical lines, Gray background, If these steps do not correct the problem
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Note Dropouts ● A single sheet of media might be defective. Try reprinting the job. ● The media's moisture content is uneven or the media has moist spots on its surface. Try printing with new media. See Printer media specifications for more information. ● The media lot is bad. The manufacturing processes can cause some areas to reject toner. Try a different type or brand of media. ● The print cartridge might be defective. See Changing the print cartridge for more information. If these steps do not correct the problem, contact an HP-authorized dealer or service representative. Vertical lines The photosensitive drum inside the print cartridge has probably been scratched. Install a new HP print cartridge. See Changing the print cartridge for instructions. Gray background 104 Chapter 6 Problemsolving ● Make sure that the single-sheet priority input slot (Tray 1) is in place. ● Decrease the print density setting through HP Toolbox or the embedded Web server. This decreases the amount of background shading. See Using the hp toolbox. ● Change the media to a lighter basis weight. See Printer media specifications for more information. ● Check the printer's environment. Very dry (low humidity) conditions can increase the amount of background shading. ● Install a new HP print cartridge. See Changing the print cartridge for instructions. ENWW