![Brother MFC-8370DN User Manual Download Page 161](http://html.mh-extra.com/html/brother/mfc-8370dn/mfc-8370dn_user-manual_54045161.webp)
Troubleshooting and routine maintenance
151
C
c
Push down the blue lock lever and take
the toner cartridge out of the drum unit.
IMPORTANT
• Handle the toner cartridge carefully. If
toner scatters on your hands or clothes,
wipe or wash it off with cold water at once.
• To avoid print quality problems, DO NOT
touch the shaded parts shown in the
illustrations below.
d
Put the print sample in front of the drum
unit, and find the exact position of the
poor print.
e
Turn the drum unit gear by hand while
looking at the surface of the OPC
drum (1).
f
When you have found the mark on the
drum that matches the print sample,
wipe the surface of the OPC drum with a
dry cotton swab until the dust or glue on
the surface comes off.
IMPORTANT
• The drum is photosensitive so DO NOT
touch it with your fingers.
• DO NOT clean the surface of the
photosensitive drum with a sharp object.
• DO NOT use excessive force when
cleaning the drum unit.
g
Put the toner cartridge back into the
drum unit until you hear it lock into place.
If you put the cartridge in correctly, the
blue lock lever will lift automatically.
h
Put the drum unit and toner cartridge
assembly back in the machine.
1