Troubleshooting and routine maintenance
149
B
h Put the drum unit and toner cartridge 
assembly back in the machine.
 
i Close the front cover.
CAUTION
 
DO NOT turn off the machine or open the 
front cover until the LCD returns to the 
standby state.
 
Replacing the drum unit B
The machine uses a drum unit to create print 
images on paper. If the LCD shows 
Drum End Soon, the drum unit is near the 
end of its life and it is time to buy a new one.
Even if the LCD shows Drum End Soon, 
you may be able to continue printing without 
having to replace the drum unit for a while. 
However, if there is a noticeable deterioration 
in the output print quality (even before 
Drum End Soon appears), then the drum 
unit should be replaced. You should clean the 
machine when you replace the drum unit. 
(See Cleaning the laser scanner window 
on page 139.)
CAUTION
 
While removing the drum unit, handle it 
carefully because it may contain toner. If 
toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
 
Note
The drum unit is a consumable item, and 
it is necessary to replace it periodically. 
There are many factors that determine the 
actual drum life, such as temperature, 
humidity, type of paper and how much 
toner you use for the number of pages per 
print job. The estimated drum life is 
approximately 12,000 pages
1
. The actual 
number of pages 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.
1
Drum yield is approximate, and may vary by type of 
use.
 
WARNING
 
HOT SURFACE
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. To prevent injury, when you 
open the front or back cover (back output 
tray) of the machine, DO NOT touch the 
shaded parts shown in the illustration.