Dell PowerEdge R900 - Manual (Page 74)

74 Installing System Components
6 Position the fan in the fan housing.
7 Lower the replacement fan into the housing until it snaps into place.
Removing a Back System Fan Housing
CAUTION: Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. See your Product
Information Guide for complete information about safety precautions, working
inside the computer, and protecting against electrostatic discharge.
1 Ensure power is removed.
2 Open the system. See "Removing the Top Cover" on page 60.
3 Remove memory risers. See "Removing a Memory Riser" on page 96.
4 Remove applicable back system fans. See "Removing a Back System Fan"
on page 72.
5 Pull the fan housing latch forward and lift back system fan housing clear of
the chassis.