Brother MFC-8420 - Replacing the Drum Unit

TROUBLESHOOTING AND ROUTINE MAINTENANCE 22 - 32
Replacing the drum unit
The MFC uses a drum unit to create print images on paper. If the
LCD shows
Change Drum Soon
, the drum unit is near the end of
its life and it is time to purchase a new one.
Even if the LCD shows
Change Drum Soon
, you may be able to
continue printing without having to replace the drum unit for a while.
However, if there is a noticeable deterioration in the output print
quality (even before
Change Drum Soon
appears), then the drum
unit should be replaced. You should clean the MFC when you
replace the drum unit. (See Cleaning the drum unit on page 22-26.)
Caution
When removing the drum unit, handle it carefully because it contains
toner. If toner scatters and your hands or clothes get dirty,
immediately wipe or wash with cold water.
WARNI NG
Just after you have used the MFC, some internal parts of the MFC
are extremely HOT! So please be careful.
The actual number of pages your drum will print may be
significantly less than these estimates. Because we have no
control over the many factors that determine the actual drum
life, we cannot guarantee a minimum number of pages that will
be printed by your drum.
HOT!