Removing and replacing server componentsThis topic provides information about removing and replacing server components.This section provides information for removing and replacing components in theserver.Note: The information and procedures in this documentation for removing andreplacing components apply to both the 4-socket and the 8-socket configurations ofthe server, unless otherwise specified. Most of the illustrations in thedocumentation uses the 4-socket configuration of the server.Removing and replacing consumable partsThis topic provides information about removing and replacing consumable parts.Replacement of consumable parts is your responsibility. If IBM installs aconsumable part at your request, you will be charged for the installation.The illustrations in this document might differ slightly from your hardware.Removing and replacing Tier 1 CRUsThis topic provides information about removing and replacing tier 1 CRUs.Replacement of Tier 1 CRUs is your responsibility. If IBM installs a Tier 1 CRU atyour request, you will be charged for the installation.The illustrations in this document might differ slightly from your hardware.Removing the DDR3 compute book coverThis information provides instructions on how to remove the DDR3 compute bookcover.About this taskThe DDR3 compute book has a cover on the left side and a cover on the right sidefor access to the microprocessor and DIMMs. Use the same procedure to removeboth covers.To access the microprocessor and DIMMs 1 through 12, remove the left cover.To access DIMMs 13 through 24, remove the right cover.To remove the DDR3 compute book covers, complete the following steps:Procedure1. Read the safety information that begins on page “Safety” on page vii and“Installation guidelines” on page 45.2. Turn off the server (see “Turning off the server” on page 41) and all attachedperipheral devices. Disconnect all power cords; then, disconnect all externalcables as necessary to replace the device.3. Remove the compute book from the server. Pull the top fan-pack handle downand slide the blue release latch (behind the fan handle) to the right to releasethe DDR3 compute book cam handle.218 System x3850 X6 and x3950 X6 Types 3837 and 3839: Installation and Service Guide