Installing System Components | 275 
 
 
 
10  Remove the screw that secures the sensor board to the sensor-board 
holder. See Figure 3-98. 
11  Remove the sensor board from the sensor-board holder. See Figure 3-
98. 
Figure 3-98.   Removing and Installing the Sensor Board 
Installing 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  Replace the sensor board into the sensor-board holder. See Figure 3-98. 
2  Replace the sensor board assembly into the hard drive cage. See Figure 
3-97.