Brother MFC4550 PLUS - Manual (Page 149)

Replacing the Drum Unit
The MFC uses a drum unit to create the print images on paper. If the display shows
CHANGE DRUM, it indicates the drum unit is nearly at the end of its life. We
recommend that you prepare a new drum unit to replace the current one. Even if the
display shows CHANGE DRUM, you may be able to continue to print without
replacing the drum unit for a while. If there is a noticeable deterioration in the output
print quality even before CHANGE DRUM is shown, then the drum unit should be
replaced.
WARNING
• When removing the drum unit, handle carefully because it contains
toner.
• You should clean the MFC when you replace the drum unit. See pages
141-143.
NOTE: The drum unit is a consumable, and it is necessary to replace it periodically.
The drmn unit is rated at approximately 20,000 pages. There are many
factors that determine the actual drum life, such as temperature, humidity,
type of paper and tuner that you use and the number of pages per print job,
etc. The drum life is estimated at approximately 20,000 pages at 20 page per
job and 8,000 pages at one page per job. 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.
For best performance, use only genuine Brother toner, and the product should
be used only in a clean, dust-fi’ee environment with adequate ventilation.
Follow these steps to replace the drum unit;
1) Turn off the power switch or unplug the power cord.
2) Open the top cover.
3) Remove the old drum unit. (See ||s^
page 134.)
WARNING--------------
Just after you have used the MFC,
some internal parts of the machine
are extremely
HOT! So please be
careful. (See page 142.)
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