Samsung ML-2240 User Manual (ENGLISH) - Page 35

Printing quality problems If the inside of the machine is dirty or paper has been loaded improperly, you may notice a reduction in print quality. See the table below to clear the problem. CONDITION SUGGESTED SOLUTIONS Light 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 cartridge life. See page 27. 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 moist or too rough. See page 18. • If the entire page is light, the print resolution setting is too low. Adjust the print resolution. See the help screen of the printer driver. • A combination of faded or smeared defects may indicate that the toner cartridge needs cleaning. • The surface of the LSU part inside the machine may be dirty. Clean the LSU by opening and closing the front cover several times and if the problem still occurs call the contact a service representative. Toner specks AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc • The paper may not meet specifications; for example, the paper is too moist or too rough. See page 18. • The paper path may need cleaning. See "Cleaning the inside" on page 25. Dropouts AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc 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 its surface. Try a different brand of paper. See page 18. • The paper lot is bad. The manufacturing processes can cause some areas to reject toner. Try a different kind or brand of paper. • Change the printer option and try again. Go to printer properties, click Paper tab, and set type to Thick. Refer to the Software section for details. If these steps do not correct the problem, contact a service representative. CONDITION White Spots SUGGESTED SOLUTIONS White spots appear on the page: • The paper is too rough and a lot of dirt from the paper falls to the inner devices within the machine, which means the transfer belt may be dirty. Clean the inside of your machine. Contact a service representative. • The paper path may need cleaning. Contact a service representative. Vertical lines If white vertical streaks appear on the page: • The surface of the LSU part inside the machine may be dirty. Clean the LSU by opening and closing the front cover several times and if the problem still occurs contact a service representative. Black background If the amount of background shading becomes unacceptable: • Change to a lighter weight paper. See page 18. • Check the machine's environment: very dry (low humidity) or high humidity (higher than 80% RH) conditions can increase the amount of background shading. • Remove the old toner cartridge and install a new one. See page 28. Toner smear • Clean the inside of the machine. See page 25. • Check the paper type and quality. See page 18. • Remove the toner cartridge and install a new one. See page 28. Vertical repetitive defects If marks repeatedly appear on the printed side of the page at even intervals: • The toner cartridge may be damaged. If a repetitive mark occurs on the page, print a cleaning sheet several times to clean the cartridge. After the printout, if you still have the same problems, remove the toner cartridge and install a new one. See page 28. • Parts of the machine may have toner on them. If the defects occur on the back of the page, the problem will likely correct itself after a few more pages. • The fusing assembly may be damaged. Contact a service representative. 35 _Troubleshooting