Are you using custom size paper loaded in correct orientation?● Load the custom size paper in portrait orientation when you print without using the UFR II printer driver.● Load the custom size paper in landscape orientation if the following conditions are met when you areusing the UFR II printer driver.Paper Size in Select Feeder Menu Loaded Paper Long edge length is 215.9 mm or less.Streaks Appear/Printing is UnevenHave you cleaned the fixing unit?● Clean the fixing unit.Fixing Unit(P. 520)Is the amount remaining in toner cartridge running low?● Check how much toner is left, and replace the toner cartridge as necessary.Replacing Toner Cartridges(P. 521)Is it time to replace the toner cartridge?● Materials inside the toner cartridge may have deteriorated. Replace the toner cartridge.How to Replace Toner Cartridges(P. 524)White Spots AppearTroubleshooting508