Alignment & TroubleshootingService Manual 4-105 Samsung Electronics4.2.2.3 Printing quality problemsCondition Suggested solutionsLight or faded print If a vertical white streak or faded area appears on the page:• The toner supply is low. You may be able to temporarily extend the toner cartridgelife. If this does not improve the print quality, install a new toner cartridge.• The paper may not meet paper specifications; for example, the paper is too moistor too rough.• If the entire page is light, the print resolution setting is too low or the toner savemode is on. Adjust the print resolution and turn the toner save mode off.• A combination of faded or smeared defects may indicate that the toner cartridgeneeds cleaning.• The surface of the LSU part inside the machine may be dirty.Toner specks • The paper may not meet specifications; for example, the paper is too moist or toorough.• The transfer roller may be dirty. Clean the inside of your machine.• The paper path may need cleaning.Dropouts If faded areas, generally rounded, occur randomly on the page:• A single sheet of paper may be defective. Try reprinting the job.• The moisture content of the paper is uneven or the paper has moist spots on itssurface. Try a different brand of paper.• The paper lot is bad. The manufacturing processes can cause some areas toreject toner. Try a different kind or brand of paper.Vertical lines If black vertical streaks appear on the page:• The surface(drum part) of the imaging unit inside the machine has probably beenscratched. Remove the imaging unit and install a new one.If white vertical streaks appear on the page:• The surface of the LSU part inside the machine may be dirty. Clean the LSU.Gray background If the amount of background shading becomes unacceptable:• Change to a lighter weight paper.• Check the machine’s environment: very dry (low humidity) or high humidity (higherthan 80% RH) conditions can increase the amount of background shading.• Remove the old drum and toner cartridge and then, install a new one.CÓPIA NÃO CONTROLADACÓPIA NÃO CONTROLADA
