Brother MFC 9970CDW - Manual (Page 81)

Routine maintenance
73
A
Drum Error
A
The corona wires have become dirty. Clean
the corona wires in the drum unit. (See
Cleaning the corona wires on page 98.)
If you cleaned the corona wires and
Drum Error was not cleared then the drum
unit is at the end of its life. Replace the drum
unit with a new one.
Replace Parts
Drum
A
The drum unit has exceeded its rated life.
Please replace the drum unit with a new one.
We recommend a Brother Original drum unit
be installed at this time.
After replacement, reset the drum counter by
following the instructions included with the
new drum unit.
Drum Stop
A
We cannot guarantee the print quality. Please
replace the drum unit with a new one. We
recommend a Brother Original drum unit be
installed at this time.
After replacement, reset the drum counter by
following the instructions included with the
new drum unit.
Replacing the drum unit
A
IMPORTANT
• While removing the drum unit, handle it
carefully because it may contain toner. If
toner scatters on your hands or clothes,
immediately wipe or wash it off with cold
water.
• Every time you replace the drum unit,
clean the inside of the machine. (See
Cleaning and Checking the machine
on page 92.)
a
Make sure that the machine is turned
on.
b
Press the front cover release button and
then open the front cover.