Dell PowerEdge C8000 - Manual (Page 176)

176 Installing System Components
Sled Covers
Remove the sled covers to access internal system components. To open sleds
with front-access 2.5-inch hot-plug hard-drives, see "Removing the Front and
Back Sled Covers" on page 176. To open sleds with GPGPU/Xeon Phi cards,
see "Removing the Sled Cover" on page 181.
Removing the Front and Back Sled Covers
CAUTION: The sled must be operated with the covers installed to ensure proper
cooling.
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized is not covered by
warranty. Read and follow the safety instructions that came with the product.
NOTE: It is recommended that you always use a static mat and static strap while
working on components in the interior of the system.
NOTE: Before you access the front cover, you must first remove the back cover
from the sled.
1 Remove the sled from the enclosure. See "Removing a Sled" on page 155
2 Remove the five screws securing the back cover to the sled tray.
See Figure 3-23, Figure 3-24, or Figure 3-25.
3 Lift up the cover, and then disconnect all cables from the hard-drive
backplane. Press down the cable-locking tabs on the power and mini-SAS
cables and disconnect the cables from the hard-drive backplane.
For 4-drive bay sled without add-on cards, see Figure 3-23.
For sled with add-on cards, see Figure 3-24 or Figure 3-25.
NOTE: Note the routing of the cables as you disconnect them from the hard-drive
backplane. You must route the cables properly when you replace it to prevent the
cables from being pinched or crimped.