Fusing Unit - Left plastic cover swap Follow

Fusing unit that is compatible with each other that you only need to swap the black plastic cover on the left of the unit.

C300I is compatible with C301I, and vice versa.

C550I is compatible with C551I, and vice versa.

Use the previous black plastic cover and install it into the new Fusing unit.

First, remove the clear plastic wire cover

Remove the wirings from the harness, 

Remove 3 pcs of screw from the black plastic covering

Remove the black plastic cover, then swap it to the other unit. reverse the procedure