Dell POWEREDGE C6105 - Manual (Page 179)

Installing System Components | 179
4 Disconnect all the cables from the backplane. See Figure 5-6 for 2.5-
inch hard drives.
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 Disconnect front panel cables from the fan controller board. See Figure
5-12.
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.
6 Remove the hard drive cage from the chassis. See Figure 3-48
7 Disconnect the cable from the sensor board assembly. See Figure 5-14.
8 Remove the screw that secure the sensor board assembly to the hard
drive cage. See Figure 3-57.
9 Remove the sensor board assembly from the hard drive cage. See
Figure 3-57.