190 | Installing System ComponentsInstalling a Power Distribution 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.CAUTION: If removed, you must replace the second power distribution board atthe bottom and the power distribution board-connector before replacing the firstpower distribution board at the top.1 If removed, first place the second power distribution board in thesystem. See Figure 3-45. Otherwise skip to step 5.NOTE: To install the second power distribution board that is below the firstpower distribution board, angle the board during installation.2 Replace the screws securing the second power distribution board to thesystem. See Figure 3-45.3 Replace the power distribution board bridge board. See Figure 3-45.4 Connect all the cables to the second power distribution board. SeeFigure 3-46.You must route these cables properly to prevent them from beingpinched or crimped.5 Replace the screws securing the first power distribution board to thesystem. See Figure 3-45.6 Connect all the cables to the first power distribution board. See Figure3-46You must route these cables properly through the tabs on the chassis toprevent them from being pinched or crimped.7 Replace the power supply. See "Installing a Power Supply" on page 114.8 Close the system. See "Closing the System" on page 174.
