Samsung ML-2850D User Manual

Also see for ML-2851ND: User guide Driver manual Driver guide Specifications Manual Del Usuario

Contents

9.8 <Troubleshooting>Vertical lines If black vertical streaks appear on the page:• The drum inside the toner cartridge hasprobably been scratched. Install a new tonercartridge. See page 8.3.If white vertical streaks appear on the page:• The surface of the LSU part inside the printermay be dirty. Clean the LSU. See page 8.2.GraybackgroundIf the amount of background shading becomesunacceptable, the procedures below may fix theproblem.• Change to lighter weight pages. See page 5.3.• Check the printer’s environment; low humidity(lower than 20% RH) or high humidity (higherthan 80% RH) conditions can increase theamount of background shading.• Remove the old toner cartridge and install anew one. See page 8.3.Toner smear • Clean the inside of the printer. See page 8.1.• Check the paper type and quality. See page5.2.• Remove the toner cartridge and install a newone. See page 8.3.VerticalrepetitivedefectsIf marks repeatedly appear on the printed side ofthe page at even intervals:• The toner cartridge may be damaged. If arepetitive mark occurs on the page, install anew toner cartridge. See page 8.3.• Parts of the printer may have toner on them. Ifthe defects occur on the back of the page, theproblem will likely correct itself after a fewmore pages.• The fusing assembly may be damaged.Contact a service representative.Condition Suggested solutionsBackgroundscatterBackground scatter results from bits of tonerdistributed on the printed page.• The paper may be too damp. Try printing witha different batch of paper. Do not openpackages of paper until necessary so that thepaper does not absorb too much moisture.• If background scatter occurs on an envelope,change the printing layout to avoid printingover areas that have overlapping seams onthe reverse side. Printing on seams can causeproblems.• If background scatter covers the entiresurface area of a printed page, adjust the printresolution through your software application orvia the printer properties window.Misformedcharacters• If characters are improperly formed andproducing hollowed images, the paper stockmay be too slick. Try a different paper. Seepage 5.3.Page skew • Ensure that the paper is loaded properly.• Check the paper type and quality. See page5.2.• Ensure that the paper is loaded correctly andthe adjustable guides are not too tight or tooloose against the paper stack.Curl or wave • Ensure that the paper is loaded properly.• Check the paper type and quality. Both hightemperature and humidity can cause papercurl. See page 5.2.• Turn over the stack of paper in the tray. Alsotry rotating the paper 180° in the tray.Condition Suggested solutions