Brother MFC-9420CN - Manual (Page 135)

Chapter C
C - 10
Paper Jam C
If paper has passed behind the back cover
and there is a paper jam where the paper
comes out, follow the steps below:
1
Open the back cover and release the
fusing unit pressure release levers.
2
Remove the jammed paper by pulling it
out slowly.
3
Reset the fusing unit pressure release
levers.
4
Close the back cover.
Paper Jam C