It is a promised post for a long time. My Canon imageClass MF4450 multifunction printer. I ordered the parts in January and received them in February. I said I will make a post to show you how to replace the broken hinger.
Let me put the pictures below which recorded the most important steps.
I received it in February. It is in a box. Unbox it, just a bag as above. Two, or a pair of fingers inside.
I removed the left side panel. The IC board looks like the above. I keep this picture for the record of how the wires and connectors connecting to the board. After that, I will disconnect these wires before removing the cover.
After removing the cover, the hinges are accessible.
Then I install the new hinge with the reverse order of dismount.
Actually, I watched the youtube video when I doing this job. It helps me a lot.