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![](https://files.manualsfile.com/41967037-mfc-l8850cdw/bg63.png)
Routine maintenance
87
A
Cleaning the corona wires A
If you have print quality problems or the
Touchscreen displays Drum !, clean the
corona wires as follows:
a Make sure that the machine is turned
on.
b Press the front cover release button and
pull open the front cover.
c Hold the blue handle of the drum unit.
Pull the drum unit out until it stops.
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