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Chapter A
90
Replacing the drum unit A
Order No. DR-331CL
A new drum unit can print approximately
25,000 Letter or A4 size single-sided pages.
1
1
Drum life is approximate and may vary by type of
use.
NOTE
• There are many factors that determine the
actual drum life, such as the temperature,
humidity, type of paper, type of toner used
and so on. Under ideal conditions, the
average drum life is estimated at
approximately 25,000 pages. The actual
number of pages that your drum will print
may be significantly less than this
estimate. 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. The machine should be
used only in a clean, dust-free
environment with adequate ventilation.
• Printing with a non-Brother drum unit may
reduce not only the print quality but also
the quality and life of the machine itself.
Warranty coverage does not apply to
problems caused by the use of a non-
Brother drum unit.
Drum ! A
The corona wires are coated with paper dust
or toner. Clean the corona wires in the four
drums (see Cleaning the corona wires
on page 87).
If you cleaned the corona wires and the
Drum !
error was not cleared, then the drum unit is at
the end of its life. Replace the drum unit with a
new set.
Drum End Soon A
The drum unit is nearing the end of its rated
life and will require replacement. We
recommend you keep a genuine Brother
drum unit ready for installation. Buy a new
drum unit (DR-331CL) and have it ready
before you get a Replace Drum message.
Replace Drum A
The drum unit has exceeded its rated life.
Replace the drum unit with a new one. We
recommend a genuine Brother drum unit be
installed at this time.
After replacement, reset the drum counter by
following the instructions included with the
new drum unit (see Resetting the drum
counter on page 96).
Drum Stop A
We cannot guarantee the print quality.
Replace the drum unit with a new one. We
recommend a genuine Brother drum unit be
installed at this time.
After replacement, reset the drum counter by
following the instructions included with the
new drum unit (see Resetting the drum
counter on page 96).
Replacing the drum unit A
IMPORTANT
• While removing the drum unit, handle it
carefully because it may contain toner. If
toner scatters on your hands or clothes,
wipe or wash it off with cold water at once.
• Every time you replace the drum unit,
clean the inside of the machine
(see Advanced User's Guide).
• DO NOT unpack the new drum unit until
you are ready to install it. Exposure to
direct sunlight (or room light for long
periods of time) may damage the drum
unit.
a Make sure the machine is turned on.