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146 | Installing System Components
Removing the Sensor Board for 2.5” Hard Drive System
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 by Dell is not
covered by your warranty. Read and follow the safety 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 81.
3 Open the system. See "Opening the System" on page 117.
4 Disconnect all the cables from the backplane. See Figure 5-5 for 2.5
"
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
5-11.
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.
6 Remove the hard-drive cage from the chassis. See Figure 3-32.
7 Disconnect the cable from the sensor-board assembly. See Figure 5-13.
8 Remove the screws that secure the sensor-board assembly to the hard-
drive cage. See Figure 3-41.
9 Remove the sensor-board assembly from the hard-drive cage. See
Figure 3-41.