- Hewlett-Packard Laser Printer User's Guide

Routine maintenance
5 - 7
5
Drum unit
This printer can print up to 12,000 pages
*
with one drum unit.
*
At 5% print coverage (A4 or Letter size). The actual number of printed pages will vary depending on the average type
of print job and paper.
Note
• There are many factors that determine the actual drum life, such as the temperature, humidity, type of
paper, type of toner used, number of pages per print job and so on. Under ideal conditions, the
average drum life is estimated at up to 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 printer should be used only in a clean,
dust-free environment with adequate ventilation.
• Printing with a third-party drum unit may reduce not only the print quality but also the quality and life
of the printer itself. Warranty coverage does not apply to problems caused by the use of third-party
drum unit.
Change Drum message
If the LED shows the message below, it means the drum unit is near the end of its life. We recommend that
you replace the drum unit with a new one before there is a noticeable deterioration in the print quality.
CAUTION
• While removing the drum unit, handle it carefully because it may contain toner.
• Every time you replace the drum unit, you should clean the inside of the printer. See Cleaning on
page 5-11.