Installing System Components | 125
5 Replace the screws that secure the front-panel assemblies to the chassis.
See Figure 3-30.
6 Replace the screws that secure the hard-drive cage to the chassis. See
Figure 3-29.
7 Connect front panel cables to the fan controller board. See Figure 5-11.
You must route these cables properly through the tabs on the chassis to
prevent them from being pinched or crimped.
8 Connect all the cables to the backplane. See Figure 5-3 for 3.5-inch
hard drives and Figure 5-6 for 2.5-inch hard drives.
You must route these cables properly through the tabs on the chassis to
prevent them from being pinched or crimped.
9 Close the system. See "Closing the System" on page 98.
10 Replace the hard drives. See "Installing a Hard Drive into a Hard-Drive
Carrier" on page 64.
11 Reconnect the system to its electrical outlet and turn on the system,
including any attached peripherals.
Sensor Boards

Removing the Sensor Board for 3.5” HDD System

CAUTION: Many repairs may only be done by a cert ified service technician. You
should only perform troubleshooting and simpl e repairs as authorized in your
product documentation, or as directed by the o nline or telephone service and
support team. Damage due to servicing that is n ot authorized by Dell is not
covered by your warranty. Read and follow the safet y instructions that came with
the product.
1 Turn off the system, including any attached peripherals, and
disconnect the system from the electrical outlet.
2 Remove all the hard drives. See "Removing a Hard-Drive Carrier" on
page 61.
3 Open the system. See "Opening the System" on page 97.