b. Press or to display Printer Settings, then press OK. c. Press Go. The machine will print the Printer Settings report. d. Press Back two (2) times to exit the menu. - If no lines appear on the report, the issue has been resolved. - If report prints with black horizontal lines, a second manual drum cleaning may be needed. Repeat steps 1 -3. If the Configuration Page is normal, check the Interface cable between the computer and printer, the printer set up, and application software. If the Configuration Page is blank, contact your Customer Support Center. • The Print Cartridge may be defective or low on toner. Replace the Print Cartridge. Mar 20, 2020 · Reinstall the toner cartridge and run a test print. If the quality does not improve, check your printer’s user guide to see if there is a cartridge cleaning function built into the machine. If you can’t find your manual, you can usually find a digital copy by searching for it on Google. Run the cleaning function and run another test print. Dec 05, 2001 · Print quality and the print head By far the most common problem with inkjet printers is poor print quality. Usually, these problems manifest themselves in the form of horizontal white lines ... How to fix white lines when printing. 1) Run the clean program on your printer. White lines will typically start appearing on your print outs due to a clogged up printer head. Your first port of call when solving this problem is to run the cleaning program on your printer, which should be accessible through its settings menu.