Removing and Installing System Components | 301 
 
 
8  Remove the screw that secures the sensor board to the hard drive cage. 
See Figure 3-107. 
9  Remove the sensor board from the hard drive cage. See Figure 3-107. 
Figure 3-107.   Removing and Installing the Sensor Board 
Installing the Sensor Board for 3.5” 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  Replace the sensor board into the hard drive cage. See Figure 3-107. 
2  Replace the screw that secures the sensor board to the hard drive cage. 
See Figure 3-107. 
3  Connect the sensor board cable to the sensor board. See Figure 3-108. 
4  Replace the hard drive cage into the chassis. See Figure 3-96. 
5  Replace the screws that secure the hard-drive cage to the chassis. See 
Figure 3-95.