Oki Data CONFIDENTIAL43827101TH Rev.2 224 /7.5.3.(2) Background is dirty (Fig.7.2 B )(2-1)Background is dirty (partly)(2-2)Background is dirty (totally)Type of mediumID unit terminalConfirmation TasksCheck to see if an especially thin medium is used for printing.Ensure visually that the high-voltage terminal of the ID unit isproperly in contact with the contact ASSY (see Figure 7-3).Action at NGUse the prescribedpaper.Replace the ID unit ormodify the high-voltage terminal. Touse a new ID unit on atrial basis, use FUSEKEEP MODE of theSystem MaintenanceConfirmation Items(2-2-1) Print medium(2-2-2) High-voltage terminalDrum exposed to lightLeak of tonerOffset toner of fuser unitConfirmation TasksCheck to see if the ID unit has been left in an environmentwhere its surface was exposed to light for a long time.Check to see if toner is leaking from the ID unit or tonercartridge.Check to see if the fuser unit has offset toner from the previousprint job sticking.Action at NGReplace the ID unit. Touse a new ID unit on atrial basis, use FUSEKEEP MODE of theSystem MaintenanceMenu.Replace the ID unit ortoner cartridge. To usea new ID unit on a trialbasis, use FUSE KEEPMODE of the SystemMaintenance Menu.Repeat idle printing byusing waste medium,until the offset toner isexhausted to the printmedium. Or, replacethe fuser unit. To use anew fuser unit on a trialbasis, use FUSE KEEPMODE of the SystemMaintenance Menu.Confirmation Items(2-1-1) ID unit(2-1-2) Fuser unit
