IBM eServer 240 xSeries User Reference Manual

Also see for eServer 240 xSeries: Configuration and options guide

Contents

1 DIMM2 Retaining clips3 DIMM connector 1 (J4)4 DIMM connector 2 (J3)5 DIMM connector 3 (J2)6 DIMM connector 4 (J1)Before you begin: Read “Electrical safety” on page 42 and “Handling static-sensitive devices”on page 44. Read the documentation that comes with your option.To install a DIMM:1. Turn off the server and peripheral devices and disconnect all external cablesand power cords (see “Preparing to install options” on page 46); then removethe cover. See “Removing the left-side cover (tower model)” on page 48 or“Removing the cover (rack model)” on page 49.2. Locate the DIMM connectors on the processor board. Determine the DIMMconnector into which you will install the DIMM. (See the notes at the beginningof this procedure.)3. Touch the static-protective package containing the DIMM to any unpaintedmetal surface on the server. Then, remove the DIMM from the package.Note: To avoid breaking the retaining clips or damaging the DIMM connectors,handle the clips gently.4. Install the DIMM:a. Turn the DIMM 1 so that the pins align correctly with the connector 5.b. Insert the DIMM into the connector by pressing on one edge of the DIMMand then on the other edge of the DIMM. Be sure to press straight into theconnector. Be sure that the retaining clips 2 snap into the closedpositions.c. Make sure the retaining clips are in the closed position. If a gap existsbetween the DIMM and the retaining clips, the DIMM has not been properlyinstalled. In this case, open the retaining clips and remove the DIMM; then,reinsert the DIMM.d. Repeat these steps for each DIMM that you install.Attention:Installing or removing DIMMs changes the configuration information in theserver. When you restart the server, the system displays a message indicatingthat the memory configuration has changed. If you installed additional memory, start the Configuration/Setup Utilityprogram and select Save Settings. If you just replaced a failed DIMM, you must start the Configuration/SetupUtility program, select Advanced Setup, select Memory Settings, highlightthe connector or bank of connectors that you want to enable, then selectEnable.66 IBM xSeries User's Reference