Installing System Components 105
6
Slide in the optical drive until the latch snaps into place.
7
Connect the optical drive cable to the back of the drive.
You must route these cables properly through the tabs on the system
chassis to prevent them from being pinched or crimped. See Figure 3-1.
8
Connect the data cable to the system board and the interface cable to
SAS_B on the backplane. See Figure6-1.
9
Close the system. See "Closing the System" on page89.
10
If applicable, replace the front bezel. See "Removing the Front Bezel" on
page86.
11
Reconnect the system and peripherals to their electrical outlets, and turn
on the system.
Cooling Fans
Your system contains four cooling fans, single- or dual-motor depending on
your system configuration. These provide cooling fort he processor, PCI cards,
and memory modules. Systems with redundant power supplies also contain
one single-motor fan to provide cooling for the power supplies.
NOTE: Systems with cabled hard drives contain only four single-motor fans.
NOTE: Hot-swap removal or installation of the cooling fans is not supported.
NOTE: In the event of a problem with a particular fan, the fan number is referenced
by the system’s management software, allowing you to easily identify and replace
the proper fan by noting the fan numbers on the fan assembly.

Removing a Cooling Fan

WARNING: The cooling fan can continue to spin for some time after the system
has been powered down. Allow time for the fan to stop spinning before removing
itfrom the system.
WARNING: Do not attempt to operate the system without the cooling fans.
CAUTION: Many repairs may only be done by a certified service technician.
Youshould only perform troubleshooting and simple repairs as authorized in
yourproduct documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not
coveredby your warranty. Read and follow the safety instructions that
camewith the product.
book.book Page 105 Friday, November 20, 2009 2:56 PM