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 left to right and right to left several times.

Routine maintenance

d Put the drum unit and toner cartridge assembly back into the machine. Close the front cover.

Replacing the drum unit

Order No. DR-420

A

1

Note

Be sure to return the tab to the home position (a) (1). If you do not, printed pages may have a vertical stripe.

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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