Brother MFC-8440 B - Manual (Page 169)

TROUBLESHOOTING AND ROUTINE MAINTENANCE 12 - 8
WARNING
To prevent damage to the MFC caused by static electricity, do not
touch the electrodes shown in the following diagram.
5
Open the back output tray. Pull the jammed paper out of the
fuser unit. If the paper jam can be cleared, go to Step 7.
If you have to pull the paper toward the back of the MFC, the
fuser may get dirty with toner powder and it may scatter on the
next printouts. Print a few copies of the test page until the
scattering of toner stops.