- 121 -Replacing Consumables and Maintenance Units4 4. Maintenance11 Return all the four image drums to theprinter.12 Close the top cover (4) by pushing theboth sides of the cover firmly.413 Close the front cover (2).Note● The front cover cannot be closed if the top cover isnot closed securely.214 Please recycle belt unit.Memo● If you must dispose of a belt unit, put it in a plastic bag orsimilar container and dispose of it in accordance with yourmunicipality’s ordinances or guidelines.Replacing the Fuser UnitLife Span of Fuser UnitWhen the “Fuser Unit Near Life” messageappears on the display screen, prepare areplacement fuser unit. You can keep printingapproximately 1250 pages until the nextmessage appears.When the “Change Fuser Unit” messageappears, replace the fuser unit.The life expectancy of the fuser unit is up to100,000 pages for A4 simplex printing.Note● The actual number of pages you can print with the fuserunit depends on how you use it.Note● Though opening and closing the top cover may extendthe life of the fuser unit somewhat, you should replace itsoon after “Change Fuser Unit” is displayed to preventmalfunction.● If you replace the fuser unit, use it until the end of itsuseable life. If you remove the fuser unit and install anduse another one before its usable life has expired, the uselife will not be correctly displayed.● When the <ENTER> button > [Admin Setup] >[System Setup] > [Near Life Status] is set to[Disable], the [Fuser Unit Near Life] message does notappear.Replacement ProcedureNote● Do not expose the image drum to direct sunlight or verybright interior light (approximately more than 1500 lux).Even under the normal interior light, do not leave it formore than 5 minutes.1 Prepare a new fuser unit.2 Turn off your printer by pressing thepower switch.Reference● “Turning Off the Power” P.22