MFC-8220
SERVICE MANUAL
5-23
3.3 Cleaning the Drum Unit
When replacing the drum unit or toner cartridge with a new one, be sure to clean the drum
unit.
1) Turn off the power switch and unplug the power cord.
2) Press the front cover release button, and then open the front cover.
3) Pull out the drum unit.
CAUTION:
It is recommended to place the drum unit on a piece of disposable paper or cloth in case you
accidentally spill or scatter toner.
4) Clean the primary corona wire inside the drum unit by gently sliding the blue tab from
right to left several times. Return the tab to the home position before re-install the drum
unit.
Fig.5-36
CAUTION:
Make sure that the blue tab on the drum unit is returned to the home position (
mark
position) before re-installing the drum unit into the machine, or printed pages may have
vertical stripes.
5) Re-install the drum unit into the machine.
6) Close the front cover.
3.4 Cleaning the Scanner Window
When replacing the drum unit or toner cartridge with a new one, be sure to clean the scanner
window.
1) Turn off the power switch and unplug the power cord.
2) Press the front cover release button, and then open the front cover.
3) Pull the drum unit out of the machine.
CAUTION:
It is recommended to place the drum unit on a piece of disposable paper or cloth in case you
accidentally spill or scatter toner.
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