User's Manual

Maintenance Messages
The drum unit and drum replacement cartridge must be replaced
every 10,000 pages. It is necessary to turn off the printer to replace
the drum unit and drum replacement cartridge. However, you can
finish your print job first by following the procedure described
below.
Completing your print job before changing the drum
After the CHANGE
DRUM message appears, you can print up to
100 pages more before changing the drum, as follows:
1. Print 10 pages at a time by pressing the ON LINE button. You can
do this up to nine times for a total of 90 pages.
2. You can then print one page at a time by pressing the ON LINE
button. You can do this for 10 more pages. Then you must
change the drum unit.
Monitoring drum usage
You should check the indicator light on the drum replacement
cartridge each time you change the toner cartridge. This indicator
helps you monitor drum usage, as described on page 6-1 1. The
indicator light lets you know in advance of the display panel when
the drum unit should be changed.
CAUTION: If you regularly print high density graphics
(more than 20 percent page density), you need to replace
the drum unit more frequently. You must keep track of
the number of toner cartridges you have used, and replace
the drum unit and drum replacement cartridge at the
same time you install the eighth toner cartridge. Do not
wait for the CHANGE DRUM message to appear on the
control panel. Overuse of the drum unit results in a
reduction of print quality and increased maintenance
requirements.
Maintenance and Transportation
6-13