Brother HL-4000CN Service Manual page 60

3) Take the print head cartridge out of the package and extract the eight seals hard in
the horizontal direction.
Note:
Keep the aluminum bag of the print head cartridge if a future move of the printer is
anticipated.
4) Extract the protective material of the print head cartridge by holding the right and left
ends.
5) Peel the protective sheet covering the cartridge as shown in the figure.
Note:
Do not touch the intermediate transfer roll (black). Do not hit or scratch the roll surface
with a thing. If the roll surface is damaged or stained by hand or other, the print quality
will go low.
Do not leave the print head cartridge with the protective sheet off. The print quality
will go low.
When removing the protective sheet, keep the print head cartridge horizontal.
Fig.2-17
Fig.2-18
Fig.2-19
II-7