- 116 -Replacing Consumables and Maintenance Units4 4. MaintenanceReplacing the Image DrumLife Span of Image DrumWhen the “%COLOR% Image Drum NearLife” message appears on the display screen,prepare a replacement image drum.If you continue printing, the message“%COLOR% Image Drum Life” will bedisplayed and printing will stop.A guideline for replacing the image drum isevery 30,000 pages or so for A4 sized paper(with single-sided printing). However, thisnumber of pages is for common printingconditions (3 pages at a time). Printing one pageat a time reduces the drum life by about half.The actual number of printed pages may behalved again relative to the above guideline,depending on the printing conditions.If you continue to print more than the above,the printer will force the printing to stop.Note● The actual number of pages you can print with the imagedrum depends on how you use it. The above guidelinemay be reduced by more than half, depending on theconditions of printing.● Though opening and closing the top cover may extendthe life of a image drum for a while, it is recommended toreplace it soon after the “Install New image drum” isdisplayed.● The print quality may deteriorate after the toner cartridgehas been unpacked for a year. Replace it with a new one.● When the <ENTER> button > [Admin Setup] >[System Setup] > [Near Life Status] is set to[Disable], the “%COLOR% Image Drum Near Life”message does not appear.Procedure for ReplacementNote● If you use a new image drum with the toner cartridgescurrently in use, the remaining amount indication of thetoner cartridges will not display correctly.The messages “%COLOR% Image Drum Near Life” or“%COLOR% Image Drum Life” may also be displayedsoon after replacement.● The image drum (the green tube) is very delicate. Handleit carefully.● 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.● In order for the printer to exhibit its full performance,please use genuine Oki Data consumables.● Service for problems due to use of consumable itemsother than genuine OKI consumables will incur feeseven in the warranty period or the maintenance contractperiod. (Use of consumable items other than genuine OKIconsumables does not always cause problems, but pleaseexhibit caution when using those.)● There is one toner cartridge for each color on the imagedrum.1 Prepare a new image drum.2 Insert your finger into the recess onthe right side of the printer and pull thefront cover open lever (1) to open thefront cover (2) forward.123 Press the top cover open button (3) andopen the top cover (4).CAUTION Possible to getburned.● The fuser unit is extremely hot. Do not touchit.344 Identify an empty toner cartridge by itslabel color (5).5