ROUTINE MAINTENANCE 5 - 17
Cleaning the corona wire
If you are experiencing print quality problems, please clean the corona wire as follows:
1
Turn off the printer power switch, and then unplug the printer power cord.
2
Press the cover release button and then open the front cover of the printer.
3
Take out the drum unit assembly (drum unit with the toner cartridge).
Caution
■We recommend that you put the drum unit assembly on a piece of disposable paper or cloth in
case you accidentally spill the toner.
■To prevent damage to the printer from static electricity, do not touch the electrodes shown in
Figure 5-27.
Figure 5-27
4
Clean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left
several times.
Figure 5-28
Caution
Make sure to return the tab to the Home position. If you do not, printed pages will have a black
vertical stripe.
5
Put the drum unit assembly back in the printer.
6
Close the front cover.
7
Plug the printer power cord back in, and then turn the printer power switch back on.
Home position
(▲)