148 | Installing System ComponentsInstalling the Sensor Board for 2.5” Hard Drive SystemCAUTION: 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 andsupport team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that came withthe product.1 Replace the sensor board into the sensor-board holder. Make sure thatthe stand-off on the sensor-board holder is inserted into the slot on thesensor board. See Figure 3-42.2 Replace the sensor-board assembly into the hard-drive cage. See Figure3-41.3 Replace the screw that secures the sensor board to the hard-drive cage.See Figure 3-41.4 Connect the sensor board cable to the sensor board. See Figure 5-13.5 Replace the hard-drive cage into the chassis. See Figure 3-32.6 Replace the screws that secure the hard-drive cage to the chassis. SeeFigure 3-31.7 Connect all the cables to the backplane. See Figure 5-5 for 2.5 " harddrives.You must route these cables properly through the tabs on the chassis toprevent them from being pinched or crimped.8 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 toprevent them from being pinched or crimped.9 Close the system. See "Closing the System" on page 118.10 Replace the hard drives. See "Installing a Hard Drive into a Hard-DriveCarrier" on page 83.11 Reconnect the system to its electrical outlet and turn on the system,including any attached peripherals.
