Replacing a memory module

This topic provides instructions about how to replace a memory module.

Note

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

The following illustration shows the location of the DIMM connectors on the left side of the compute book board:

The following illustration shows the location of the DIMM connectors on the right side of the compute book board:

To install a DIMM, complete the following steps:

1. 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.
2. 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.

   
   
   
3. Turn the DIMM so that the DIMM keys align correctly with the connector.
4. Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the ends of the DIMM connector.
5. 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.
6. Replace the compute book cover. Align the cover over the compute book and slide the cover forward until it is seated firmly on the compute book.
7. Reinstall the compute book in the server (see Replacing a compute book).
8. Reconnect the power cord and any cables that you removed.
9. Turn on the peripheral devices and the server.