18. If you are instructed to return the system board, follow all packaginginstructions, and use any packaging materials for shipping that are suppliedto you.Attention: Make sure to place the socket covers for the microprocessorsockets on the system board before returning the system board.Replacing the system boardUse this information to replace the system board.About this taskNote:1. Before you replace the system board, make sure that you backup any featureson demand (FoD) keys that were enabled. Remember to re-enable the featureson demand (FoD) keys after installing the new system board. For moreinformation on Features on Demand (FoD), including instructions forautomating the activation and installation of the activation key by using IBMToolsCenter or IBM Systems Director, see the IBM Features on Demand User'sGuide at /http://www.ibm.com/systems/x/fod/ under the Help section.2. When you reassemble the components in the server, be sure to route all cablescarefully so that they are not exposed to excessive pressure and that they donot get pinched when you reinstall the system board (see “Internal cablerouting” on page 164 and “System-board internal connectors” on page 26 formore information). In addition, make sure the cables are inserted into therelevant cable clips.3. When you replace the system board, you must either update the server withthe latest firmware or restore the pre-existing firmware that the customerprovides on a diskette or CD image. Make sure that you have the latestfirmware or a copy of the pre-existing firmware before you proceed. See“Updating the firmware” on page 87, “Updating the Universal UniqueIdentifier (UUID)” on page 108, and “Updating the DMI/SMBIOS data” onpage 110 for more information.Important: Some cluster solutions require specific code levels or coordinated codeupdates. If the device is part of a cluster solution, verify that the latest level ofcode is supported for the cluster solution before you update the codeTo install the system board, complete the following steps:Procedure1. Read the safety information that begins on page “Safety” on page vii and“Installation guidelines” on page 32.2. Grasp two holders and lower the system board into the chassis.Chapter 6. Removing and replacing components 255
