Dell POWEREDGE C6105 Hardware Owner's Manual page 104

1 Turn off the system, including any attached peripherals, and
disconnect the system from its electrical outlet.
2 Open the system. See "Opening the System" on page 97.
3 Remove the power distribution boards. See "Removing a Power
Distribution Board" on page 100.
4 Disconnect all the cables from the fan controller board. See Figure 5-11.
Note the routing of the cable underneath the tabs on the chassis as you
remove them from the system. You must route these cables properly
when you replace them to prevent the cables from being pinched or
crimped.
5 Remove the screw securing the fan controller board to the chassis. See
Figure 3-23.
6 Slide and lift the fan controller board out of the chassis. See Figure 3-
23.
Figure 3-23. Removing and Installing the Fan Controller Board
1 fan controller board
104 | Installing System Components
2 screw