Table 18. Solving print image-quality problems (continued) Problem Cause Solution Toner specks appear on the printed page. . The media you are using does not meet HP’s specifications (for example, it is too moist or too rough). Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet family. The print path needs to be cleaned. Clean the print path. (See “Cleaning the print path” on page 59.) Characters are only partially printed (also referred to as dropouts). A single sheet of paper is defective. Try reprinting the job. The print density needs to be adjusted. Adjust the print density from the device configuration utility.
The moisture content of the paper is inconsistent, or the paper has moist or wet spots on the surface. Make sure that the media meets HP’s specifications. The paper was damaged by inconsistent manufacturing processes. Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet family. A draft mode or economy mode is selected in the software. Try the normal or best setting. The print cartridge is defective. Replace the print cartridge. Vertical lines appear on the printed page. The priority input tray is not in place. Adjust the priority input tray. The photosensitive drum inside the print cartridge is scratched. Replace the print cartridge.
The fuser is damaged or has an obstruction. Replace the fuser. EN Errors 189