P ROBLEM S OLVING 7.17Solving Print Quality ProblemsProblem Solution• Check the paper type and quality. Both high temperatureand humidity will cause paper curl. See “PaperSpecifications” on page A.2.• Turn over the stack of paper in the paper tray. Also tryrotating the paper 180° in the paper tray.• Open the rear output tray and try printing to the face upoutput tray.Curl or wave• Make sure that paper is loaded properly.• Check the paper type and quality. See “PaperSpecifications” on page A.2.• Open the rear output tray and try printing to the face upoutput tray.• Turn over the stack of paper in the paper tray. Also tryrotating the paper 180° in the tray.Wrinkles or creases• The transfer roller may be dirty. See “Cleaning the Inside”on page 6.4.• Check if the toner is leaking. Clean inside the printer.Back of printouts dirty• The toner cartridge may not be installed properly. Removethe cartridge and reinsert it.• The toner cartridge may be defective and need replacing.Install a new toner cartridge.• The printer may require repairs. Contact a servicerepresentative.Black pages