Cleaning The Drum Unit; Cleaning The Scanner Window - Brother mfc8440 Service Manual

CHAPTER 5 PERIODIC MAINTENANCE
3.4

Cleaning the Drum Unit

When replacing the drum unit or toner cartridge with a new one, be sure to clean the drum
unit.
1) Turn off the power switch and unplug the power cord.
2) Press the cover release button, and then open the front cover.
3) Pull out the drum unit assembly.
!
CAUTION:
It is recommended to place the drum unit assembly on a piece of disposable paper or cloth in
case you accidentally spill or scatter toner.
4) Clean the primary corona wire inside the drum unit by gently sliding the blue tab from
right to left several times. Return the tab to the home position before re-install the drum
unit assembly.
!
CAUTION:
Make sure that the blue tab on the drum unit is returned to the home position (
position) before re-installing the drum unit into the machine, or printed pages may have
vertical stripes.
5) Re-install the drum unit into the machine.
6) Close the front cover.
3.5

Cleaning the Scanner Window

When replacing the drum unit or toner cartridge with a new one, be sure to clean the scanner
window.
1) Turn off the power switch and unplug the power cord.
2) Press the cover release button, and then open the front cover.
3) Pull the drum unit assembly out of the machine.
!
CAUTION:
It is recommended to place the drum unit assembly on a piece of disposable paper or cloth in
case you accidentally spill or scatter toner.
Home position
Fig. 5-39
5-24
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