Installing System Components | 105Installing the Fan Controller BoardCAUTION: 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 Place the fan controller board into the chassis and slide it into place.See Figure 3-23.2 Replace the screw to secure the fan controller board to the chassis. SeeFigure 3-23.3 Connect all the 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.4 Replace the power distribution boards. See "Installing a PowerDistribution Board" on page 102.5 Close the system. See "Closing the System" on page 98.6 Reconnect the system to its electrical outlet and turn on the system,including any attached peripherals.Middle PlanesRemoving the Middle PlanesCAUTION: 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 Turn off the system, including any attached peripherals, anddisconnect the system from its electrical outlet.