112 Installing System ComponentsNOTE: When installing, hot-swapping, or hot-adding a new power supply in asystem with two power supplies, allow several seconds for the system to recognizethe power supply and determine its status. The power-supply status indicator turnsgreen to signify that the power supply is functioning properly (see Figure 1-7).Removing the Power Supply BlankIf you are installing a second power supply, remove the power supply blankin bay PS2 by pulling outward on the blank.CAUTION: To ensure proper system cooling, the power supply blank mustbe installed in power supply bay PS2 in a redundant configuration. Remove thepower supply blank only if you are installing a second power supply.Installing the Power Supply BlankNOTE: Install the power supply blank only in power supply bay PS2.To install the power supply blank, align the blank with the power supply bayand insert the blank into the chassis until it clicks into place.Removing a Non-Redundant Power SupplyCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.1 Turn off the system and attached peripherals.2 Disconnect the power cable from the power supply and remove the Velcrostraps that bundle and secure the system cables.NOTE: You may have to unlatch and lift the optional cable management arm ifit interferes with power-supply removal. For information about the cablemanagement arm, see the system’s rack documentation.NOTE: Remove the power cord retention bracket that secures the systemcables. See the Getting Started Guide that ships with your system for moreinformation.3 Open the system. See "Opening the System" on page 87. Disconnect allthe power cables from the power supply to the system board, hard drivesand optical drive. See Figure 3-18.
