Table 18. Solving print image-quality problems (continued) Problem Cause Solution The toner is loose, and it does not stay attached to the printed page. The inside of the printer is dirty. Clean the print path. (See “Cleaning the print path” on page 59.) 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 cartridge needs to be replaced. Replace the print cartridge. The driver is not set for the correct media. 1. Select Optimize for: in the Paper tab of the driver. Select the correct media. 2.
Select the correct media through the device configuration utility. The power strip is not working correctly. Plug the product directly into an AC outlet. The fuser temperature is too low. Select Optimize for: in the Paper tab of the driver. Make sure that it is set for the appropriate media. Perform the heating element check (see page 203). If the error persists, replace the heating element. If, after replacing the heating element, the error persists, replace the ECU. Repetitive vertical defects appear on the printed page. If the repetitive mark occurs at equal distance between marks, either the print cartridge or a printer roller is damaged. Use the defect ruler to identify the spacing.
Check the appropriate component and replace if necessary. (See “Repetitive image defect ruler” on page 236.) The internal parts have toner on them. If the defects occur on the back of the page, the problem will probably correct itself after a few more printed pages. Otherwise, clean the printer. (See “Cleaning the print path” on page 59.) The driver is not set for the correct media. 1. Select Optimize for: in the Paper tab of the driver. Select the correct media. (This affects the current print job only.) 2. Select the correct media through the device configuration utility. EN Errors 191