Brother DCP-8040 User Manual page 112

WARNING
Just after you have used the DCP, some internal parts of the DCP
are extremely HOT! So please be careful.
Follow these steps to replace the drum unit:
1
Press the cover release button and then open the front cover.
2
Remove the old drum unit and toner cartridge assembly. Place
it on a drop cloth or disposable paper to avoid scattering toner.
7 - 31 TROUBLESHOOTING AND ROUTINE MAINTENANCE
HOT!