Canon Laser Shot LBP5970 User Manual page 364

Hang the hooks on the projections at the inner side of the triangular marks (A).
Make sure that they are hooked properly.
(A)
9
Tilt the lock release levers located on both sides of the back
of the fixing unit in the direction of the arrows to lock the
6
fixing unit.
Replacing the Fixing Unit 6-49