Brother HL-8050N - Manual (Page 146)

ROUTINE MAINTENANCE AND CONSUMABLE ITEMS REPLACEMENT 6 - 6
2
Remove any paper from the center output tray.
3
Open the back cover by lifting the lower gray lever at the
top left corner of the back of the printer.
Do not touch any parts inside the printer.
4
Push down the 2 beige levers at the bottom of the used
fuser unit.