Dell PowerEdge 4220 Guide D'installation page 11

Figure 1-1. Removing the Front Door
1
1 door latch
3 hinge body
3 While holding the hinge pin out of the door's hinge-pin housing, pull the
door slightly away from the rack so that the door clears the hinge body.
4 Release the hinge pin.
5 Lift the door upward so that the door clears the bottom hinge post.
WARNING:
the removed door flat with its outer surface facing upward.
6 Lay the door in a safe location with the door's outer surface facing upward
to help prevent damage to the door's badge and cosmetic coating.
Due to the size and weight of the door, it is recommended that you lay
2 hinge pin
4 hinge-pin housing
Installation Guide
2
3
4
9