Brother DCP-9010CN User Manual page 89

Large spots on the printed pages
If your printout has coloured spots at 94 mm
intervals, follow the steps below to solve the
problem.
a
Turn off the machine. Disconnect all
cables, and then unplug the power cord
from the electrical socket.
b
Fully open the top cover by lifting up on
the handle (1).
1
IMPORTANT
When the scanner is open, you cannot
open the top cover.
Troubleshooting and routine maintenance
c
See the print sample to identify the
C
colour causing the problem. The colour
of the spots is the colour of the drum you
should clean. For example, if the spots
are cyan, you should clean the drum for
cyan. Take out the drum unit and toner
cartridge assembly of the colour causing
the problem.
IMPORTANT
• We recommend that you place the drum
unit and toner cartridge assembly on a
clean, flat surface with a sheet of
disposable paper or cloth underneath it in
case you accidentally spill or scatter toner.
• To prevent damage to the machine from
static electricity, DO NOT touch the
electrodes shown in the illustration.
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