Brother HL-8050N - Manual (Page 148)

ROUTINE MAINTENANCE AND CONSUMABLE ITEMS REPLACEMENT 6 - 8
9
Open the top cover.
Do not touch any parts inside the printer.
10
Hold the toner cartridge by the grip and pull it out slowly.
To prevent the toner from dirtying the surface, lay a piece
of paper on the surface first before putting the toner
cartridge down.
11
Pull the 2 levers on the upper part of the transfer roll
cartridge, then squeeze the 2 beige levers on the bottom
of the used transfer roll cartridge and pull it out slowly
towards you.