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97 _Maintenance
7. Hold the toner cartridge by the handle and slowly insert the cartridge into
the opening in the machine.
8. Slide the new toner cartridge in until it locks in place.
9. Turn the cartridge locking lever toward the left until you hear a 'click'.
10. Close the front cover, then the side cover.
MAINTAINING THE IMAGING UNIT
Expected cartridge life
The useful life of the imaging unit is approximately 80,000 pages. The
screen displays Imaging unit is worn. Replace with new one when the life
of the imaging unit is almost ended. Approximately 6,000 more pages can
be made after the warning message related to the imaging unit, but you
should have a replacement imaging unit in stock. Imaging unit yield may be
affected by the operating environment, optional, printing interval, media type
and media size.
• Imaging unit is worn. Replace with new one appears on the display.
For ordering information for imaging unit. (See "Supplies" on page 121.)
Replacing the imaging unit
1. Open the side cover.
2. Open the front cover.
3. Turn the cartridge locking lever toward the right until you hear a 'click', to
release the toner cartridge.
If toner gets on your clothing, wipe it off with a dry cloth and wash
clothing in cold water. Hot water sets toner into fabric.
After replacing the toner cartridge, wait for several minutes without
powering off until the machine enters to standby mode. Otherwise it
may cause malfunction of the machine.
To prevent damage to the imaging unit, do not expose it to light for
more than a few minutes.