Brother HL-4050CDN EN - Manual (Page 127)

Routine Maintenance
118
6
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 and belt unit on a clean, flat surface with a piece of disposable
paper underneath it in case you accidentally spill or scatter toner.
If toner scatters on your hands or clothes, wipe or wash it off with cold water at once.
To prevent damage to the printer from static electricity, DO NOT touch the electrodes shown in the
illustration.
d
Hold the green parts of the belt unit with both hands and lift the belt unit up, then pull it out.