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Routine maintenance
59
A
To prevent damage to the machine caused
by static electricity, DO NOT touch the
electrodes shown in the illustration.
c Clean the corona wire inside the drum
unit by gently sliding the green tab from
right to left and left to right several times.
Note
Be sure to return the tab to the home
position (a) (1). If you do not, printed
pages may have a vertical stripe.
d Put the drum unit and toner cartridge
assembly back into the machine. Close
the front cover.
Replacing the drum unit A
Order No. DR-420
A new drum unit can print approximately
12,000 Letter or A4 size single-sided pages.
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 12,000 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.
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