OKI C7350DTN User Manual
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C7350/7550 User’s Guide: Maintenance • 491 Changing the Image Drum When the image drum reaches the end of its product life, *** CHANGE DRUM is displayed in the control panel (*** is the color name). If printing continues without replacing the image drum, CHANGE ***** IMAGE DRUM is displayed and printing is cancelled. Change the toner cartridge and clean the LED head at the same time as changing the image drum. Image drum life is approximately 23,000 sheets of letter-size media. This assumes a typical office environment where 20% of print jobs are one page emails, 30% are 3-page documents containing only words (no graphics) and 50% are print runs of 15 pages or more. 1.Turn off the printer. 2.Open the top cover. open top cover.eps CAUTION! • Never expose the image drum to direct sunlight. • Never expose the image drum to light for more than 5 minutes. • Never touch the surface of the green drum inside the image drum unit. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 492 3.Remove the appropriate image drum/toner cartridge from the printer. ugc7_038.jpg 4.Make sure the replacement image drum is the correct color and remove it from the packaging. 5.Remove the protective sheet from the new image drum. protective sheet remove1.eps and protective sheet remove2.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 493 6.Install the new image drum in the printer. ugc7_133.jpg 7.Push the tab inwards and remove the blanking plate from the image drum. blanking plate remove.eps 8.Install a new toner cartridge. See “Changing the Toner Cartridge” on page 484. 9.Close the top cover. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 494 Changing the Transfer Belt When the transfer belt reaches the end of its product life, CHANGE BELT UNIT is displayed in the control panel. Transfer belt life depends on the number of sheets per print job. When single sheets are printed, transfer belt life is reduced. 1.Turn off the printer. 2.Open the top cover. open top cover.eps 3.Remove the cradle (complete with the four image drums and toner cartridges) from the printer. image drum set remove.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 495 4.Press back the lock lever (1). 5.Use the handles (2 and 3) to remove the old transfer belt from the printer. transfer belt remove.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 496 6.Remove the new transfer belt unit from its packaging. 7.Using the handles (2 and 3), align the pins (4) with the grooves (5) on the printer and insert the new transfer belt into the printer. transfer belt replace.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 497 8.Move the lock lever (1) toward the front of the printer. Make sure it locks the transfer belt into place. 9.Reinstall the cradle complete with the four image drums and toner cartridges in the printer. image drum set replace.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 498 10.Close the top cover. close top cover.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 499 Changing the Fuser When the fuser unit reaches the end of its product life, CHANGE FUSER UNIT is displayed in the control panel. Fuser unit life is approximately 60 000 A4 sheets. 1.Turn off the printer. 2.Open the top cover. open top cover.eps WARNING! The fuser unit is very hot after printing. Always use the handle when lifting it. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 500 3.Move the two locking levers (1) to the rear of the machine to release the fuser unit. fuser unit remove.eps 4.Use the handle (2) to remove the fuser unit from the printer. 5.Remove the new fuser unit from its packaging. Lift off the shipping tape at either end. As you remove the tape, the levers at either end of the fuser should move into the locked position. (1) (1) Downloaded From ManualsPrinter.com Manuals