Drum unit; CHANGE DRUM SOON message; Replacing the drum unit- Page 155

5 - 6 ROUTINE MAINTENANCE

HL7050_US_UG_FM5.5

Drum unit

CHANGE DRUM SOON message 

The printer uses a drum unit to create the print images on paper.  If 
the LCD shows CHANGE DRUM SOON, 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.

Replacing the drum unit

Every time you replace the drum unit, you should clean the inside of 
the printer. For more information, see Cleaning in this chapter.

This printer can print up to 40,000 pages 

*1

 with one drum unit.

*

1

  At 5 % coverage print (A4 or Letter size).  The actual number of 

printed pages will vary depending on the average type of print job 
and paper.

■

There are many factors that determine the actual drum life, 
such as temperature, humidity, type of paper, type of toner 
used, the number of pages per print job and so on.  Under 
ideal conditions, the average drum life is estimated at up to 
40,000 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.

CHANGE DRUM SOON