Brother HL-4050CDN EN - Manual (Page 115)

Routine Maintenance
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b
Hold the green handle of the drum unit. Lift the drum unit up and then pull it out until it stops.
c
Release the gray lock lever (1) that is on the left side of the printer. Pull the drum unit completely out of
the printer using the green handles on the drum unit.
CAUTION
Hold the green handles of the drum unit when you carry it. DO NOT hold the sides of the drum unit.
We recommend that you place the drum unit on a clean, flat surface with a piece of disposable paper
underneath it in case you accidentally spill or scatter toner.
Handle the toner cartridges carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold
water at once.
1