Brother HL-3450CN - Manual (Page 197)

CHAPTER 7 TROUBLE SHOOTING
7-19
6. With all the covers and units
open, remove the jammed
paper. Access and remove the
jammed paper from the Rear
Access Cover.
Fig. 7-14
7. Set the Pressure Release
Levers of the Fusing Unit to the
SET position, and then close
the Top Cover.
Fig. 7-15
8. Close the Duplex Cover Top Assembly.
9. Close the Rear Access Cover of the printer.
10. Close the Inside Unit and the Duplex Lower Cover of the Duplex
Unit.