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User's Manual
Drum Unit
The drum unit life is designed to last about 50,000 pages of 5%
coverage continuous printing on A4 paper or about one year after
unpacking, whichever comes first. The drum unit life depends on the
number of sheets printed per job, simplex or duplex printing, print
coverage, paper type, and operating and/or storage conditions. The
drum unit life may end in the following cases:
• when the message display indicates
DRUM UNIT
is followed by
menu.
WARNING>
• when toner smudges the background of printing
• when an image of the previous page ghosts on the next page
• when dropouts occur
Avoid unnecessary high coverage printing to maintain the print unit
performance.
For the drum unit life, this printer indicates the near end of life only.
The printer message display begins indicating
when the print unit can print 10,000 more pages left. Prepare a new
drum unit if you notice this indication.
Important:
When replacing the drum unit, clean the paper path.
If the developer unit is not expired when the drum unit is replaced,
reuse the developer unit.
After replacing the drum unit, be sure to clear the drum unit service-
life counter by using the control panel. For control panel operations,
see the end of this section.
Periodic Routine Maintenance
REPLACE PARTS
*
in the message of the
<CLEAR
REPLACE PARTS
MAINTENANCE
and when
4-5
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