- 136 -7. Maintenance• The front cover cannot be closed if the output tray is not closed securely.14 Please recycle belt unit.• If you must dispose of a belt unit, put it in a plastic bag or similar container and dispose of it in accordance withyour municipality's ordinances or guidelines.When the "Fuser Unit Near Life" message appears on the display screen, prepare areplacement fuser unit. You can keep printing approximately 2,500 pages until the nextmessage appears.When the "Change Fuser Unit" message appears, replace the fuser unit.When using A4 paper (simplex printing), the estimated replacement cycle of a fuser unit isapproximately 100,000 pages. This estimation assumes the standard use condition (threepages are printed at a time). Printing one page at a time reduces the fuser unit lifetimeapproximately by half.• The actual number of pages you can print with the fuser unit depends on how you use it.• When "Change Fuser Unit" is displayed and printing is stopped, quickly replace with a new fuser unit. Althoughprinting is resumed by opening and closing the front cover, this may cause a malfunction or cause print quality todeteriorate. Also, after a fixed time has elapsed, printing is no longer possible even by opening and closing the frontcover. (The fixed time that printing is possible differs according to the operating status.)• When the [Admin Setup] > [Panel Setup] > [Near Life Status] is set to [Disable], the [Fuser Unit Near Life] messagedoes not appear.• Do not expose the image drum to direct sunlight or very bright interior light (approximately more than 1,500 lux). Evenunder the normal interior light, do not leave it for more than 5 minutes.• You can change the setting for displaying the "Fuser Unit Near Life" message. Set from [Admin Setup] > [OthersSetup] > [Near Life Setup] > [Fuser Near Life Timing]. Available values are from 500 to 5,000 (in 500 increments).1 Prepare a new fuser unit.Replacing the Fuser Unit