B4400/4500/4600 User’s Guide89Consumables and maintenanceThis section deals with the replacement of the toner cartridgeand image drum and general maintenance.Consumable order detailsAlways use genuine OKI consumables.When to replace the toner cartridgeB4400Replace the toner cartridge after Toner Low displays in theprinter Status Monitor. Also, the Error LED indicator slowlyblinks when toner is low. After Toner Low displays, the printerwill print about 100 more pages then display Toner Empty andstop printing. Printing will resume after a new toner cartridgehas been installed.B4500, B4600When the toner is running low, TONER LOW is displayed in theoperator panel LCD. If printing continues without replacing thetoner cartridge, CHANGE TONER is displayed and printing iscancelled. Printing will resume after a new toner cartridge hasbeen installed.Replacing the toner cartridgeIt is recommended that you clean the LED array at the sametime as you change the toner cartridge.The toner used in this printer is a very fine dry powdercontained in the toner cartridge.Have a sheet of paper handy so that you have somewhere toplace the used cartridge while you install the new one.Item Order No.Toner: 4400, B4500, B4600 43502301Toner: B4600 only (Higher Yield) 43502001Image drum 43501901