6.2.7 Uneven Density• Description Print density is uneven between left and right.Check and Cause Solution1. The pressure force on the left and rightsprings of the transfer roller is not even,the springs are damaged, the transferroller is improperly installed, or the trans-fer roller bushing or holder is damaged.2. The life of the print cartridge has expired.3. The toner level is not even on the printcartridge roller due to the bad blade.1. Replace both the left and right SpringHolder.2. Occur in the print cartridge gently shakethe print cartridge.3.Replace the print cartridge and try to printout.6.2.8 Background• Description Light dark background appears in whole area of the printing.Digital PrinterDigital PrinterDigital PrinterDigital PrinterDigital PrinterCheck and Cause Solution1. Does character exist less than 2%coverage per a page, and hasn’t itbeen used long time?(see the configuration sheet)2. Is a recycled print cartridge be used?3. Has the life span of the printcartridge ended?4. Is the movement(Up and Down) ofthe transfer roller smooth?5. Is the HVPS normal?1. The print cartridge is basicallydesigned to print 20,000 pages with5% coverage. If it prints more than23,000 pages with 2% coverage, abackground can occur.2. The A/S is not guaranteed if using arecyled the print cartridger.3. Replace the print cartridge when thelife span of it has been ended.4. Clean the bushing part of the transferroller.5. If the problem is still not solved,replace the print cartridge.6-5Samsung ElectronicsService ManualTroubleshooting
