Image Defectsmagicolor 6100 DeskLaser User's Guide6-34Uneven Print DensityVertical StreakingIf the print density is uneven: Remove the toner cartridges and gently rock them fiveor six times to redistribute the toner. Then, reinstall thecartridges. Install new toner cartridges. Reinstall the OPC belt cartridge. If necessary, replace the OPCbelt cartridge.If vertical streaking appears: The laser lens may be dirty. Clean the lens as described inchapter 3, “Everyday Operations and Printer Care.” The corona wire inside the OPC belt cartridge might be dirty.Clean the corona wire as described in chapter 3, “EverydayOperations and Printer Care.” One or more toner cartridges may be defective. Check thetoner cartridges, and install new ones, if necessary. Reinstall the OPC belt cartridge. If necessary, replace the OPCbelt cartridge.If a wide vertical white band appears: Check the transfer drum surface. If necessary, clean the oil offthe surface. Ensure that the transfer unit is closed.