Canon imageRUNNER ADVANCE 8105 Series Manual page 205

2) Push and release the release springs on the both rails, and further pull out the fixing feed unit until it stops.
Be careful not to touch the surface of the ETB unit to remove the pieces of paper.
3) Push and return the fixing feed unit, turn back the pressure release lever, and close the front cover.
4) Make test copies. Make sure that jamming doesn't occur.
pg. 205