Brother HL-2250DN - Cleaning the Drum Unit

Routine Maintenance
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4
Cleaning the drum unit 4
If your printout has white or black spots at 94 mm (3.71 in.) intervals, follow the steps below to solve the
problem.
a Prepare blank A4 or Letter size paper.
b Make sure the machine is in Ready mode.
c Open the front cover and the back cover (face-up output tray).