164 • TroubleshootingDealing with unsatisfactory copyingAs well as the suggestions provided in “Dealing with unsatisfactory printing” onpage 163, ensure that the scanner unit glass is clean at all times. Refer to “...thedocument glass” on page 149.Vertical linesappear.The image drum cartridge isdamaged.Replace the image drum cartridge.The toner is low. Open the top cover and tap the cartridgea few times to evenly distribute anyremaining toner. If symptoms persist,replace the toner cartridge.Horizontal Linesand spotsappearperiodically.When the interval is about94mm (4in), the image drum(the green tube) is damaged ordirty.Wipe it lightly with a soft cloth. Replacethe image drum cartridge when it isdamaged.When the interval is about42mm (1.5in), there may beforeign particles in the imagedrum cartridge.Open/close the top cover, and printagain.When the interval is about87mm (3.5in), the fuser unit isdamaged.Replace the fuser unit.The image drum cartridge hasbeen exposed to light.Replace the image drum cartridge if theproblem is not resolved.White area ofpaper is lightlystained.Paper contains static. Use paper stored in proper temperatureand humidity conditions.Too thick paper is used. Use thinner paper.The toner is low. Open the top cover and tap the cartridgea few times to evenly distribute anyremaining toner. If symptoms persist,replace the toner cartridge.Periphery of theletters issmudged.The LED head is dirty. Wipe the LED head with a soft, lint-freecloth.Toner comes offwhen it isrubbed.The thickness and type of thepaper are incorrectly set.Set the correct value of Media Type andMedia Weight in the Printer menu or setone value thicker for Media Weight.Recycled paper is used. Set one value thicker for Media Weight inthe Printer menu.Glossiness is notuniform.The thickness and type of thepaper are incorrectly set.Set the correct value of Media Type andMedia Weight in the Printer menu or setone value lighter for Media Weight.SYMPTOMS POSSIBLE CAUSES STEPS TO TAKE
