Replacing a memory module

Use this information to replace a memory module.

The following illustration shows the location of the DIMM connectors on the system board.

The following illustration shows the location of the DIMMs on the optional microprocessor and memory expansion tray.

Note

• See Installing a memory module for notes and information that you must consider when you install DIMMs. For DIMM population information, see Non-mirroring (independent mode), Memory mirroring, and Memory sparing.
• Confirm that the server supports the DIMM that you are installing, see Lenovo ServerProven website.

To install a DIMM, complete the following steps:

1. Read the safety information, see Safety and Installation guidelines.
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables, if necessary.
3. Remove the top cover (see Removing the server top cover).
4. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the outside of the server; then, remove the DIMM from the package.
5. Open the retaining clip on each end of the DIMM connector.
   Attention

   To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently.

   

6. Turn the DIMM so that the DIMM keys align correctly with the connector.
7. Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the ends of the DIMM connector (see System-board optional-device connectors for the locations of the DIMM connectors).
8. Firmly press the DIMM straight down into the connector by applying pressure on both ends of the DIMM simultaneously. The retaining clips snap into the locked position when the DIMM is firmly seated in the connector.
   Note

   If there is a gap between the DIMM and the retaining clips, the DIMM has not been correctly inserted; open the retaining clips, remove the DIMM, and then reinsert it.
9. Replace the DIMM air baffle (see Replacing the DIMM air baffle) or the microprocessor and memory expansion tray (see Replacing the microprocessor and memory expansion tray assembly), if you removed it earlier.
10. Reconnect the power cord and any cables that you removed.
11. Replace the cover (see Replacing the server top cover).
12. Turn on the peripheral devices and the server.