Brother MFC-P2000 - B/W Laser Printer Service Manual page 87

(3) Wipe the surface of the photosensitive drum with a cotton swab until the dust
or paper powder on the surface comes off.
Toner cartridge
Caution:


Do not wipe the surface of the photosensitive drum with something sharp. (ball-point
pen etc.)


Use cleaning liquid which is a 50-50 mixture of ethyl alcohol and pure water.
I-16 Black band
<Printing>
Possible cause Step
Drum unit
Ditto
Paper path
Separator
Photosensitive drum
Check
1 Is the wire cleaner positioned
at its home position?
2 Is the corona wire dirty?
Fig. 4-4
Result
No
Yes
IV-18
Cleaning roller
Remedy
Return the wire cleaner to its
home position.
Clean the corona wire.
If the problem still appears
after cleaning, replace the
drum unit.