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ConditionSuggested solutionsConditionSuggested solutionsVertical repetitivedefectsIf marks repeatedly appear on the printed sideof the page at even intervals:• The drum cartridge may be damaged. If arepetitive mark occurs on the page, run acleaning sheet through several times toclean the cartridge; contact a servicerepresentative. After the printout, if you stillhave the same problems, remove the drumcartridge and then, install a new one.(Page 10.3)• Parts of the machine may have toner onthem. If the defects occur on the back of thepage, the problem will likely correct itselfafter a few more pages.• The fusing assembly may be damaged.Contact a service representative.Page skewCurl or wave• Ensure that the paper is loaded properly.• Check the paper type and quality.(Page 4.3)• Ensure that the paper or other material isloaded correctly and the guides are not tootight or too loose against the paper stack.• Ensure that the paper is loaded properly.• Check the paper type and quality. Both hightemperature and humidity can cause papercurl. (Page 4.3)• Turn the stack of paper over in the tray. Alsotry rotating the paper 180° in the tray.Background scatterBackground scatter results from bits of tonerrandomly distributed on the printed page.• The paper may be too damp. Try printingwith a different batch of paper. Do not openpackages of paper until necessary so thatthe paper does not absorb too muchmoisture.• If background scatter occurs on anenvelope, change the printing layout toavoid printing over areas that haveoverlapping seams on the reverse side.Printing on seams can cause problems.• If background scatter covers the entiresurface area of a printed page, adjust theprint resolution through your softwareapplication or in printer properties.Wrinkles or creasesBack of printoutsare dirty• Ensure that the paper is loaded properly.• Check the paper type and quality.(Page 4.3)• Turn the stack of paper over in the tray. Alsotry rotating the paper 180° in the tray.Check for leaking toner. Clean the inside ofthe machine. Contact a servicerepresentative.Misformedcharacters• If characters are improperly formed andproducing hollow images, the paper stockmay be too slick. Try different paper.(Page 4.3)• If characters are improperly formed andproducing a wavy effect, the scanner unitmay need service. Contact a servicerepresentative.Black pages• The drum cartridge may not be installedproperly. Remove the cartridge and reinsertit.• The drum cartridge may be defective andneed replacing. Remove the drum cartridgeand install a new one. (Page 10.3)• The machine may require repair. Contact aservice representative.11.17