Lenovo 5457 Installation And Service Manual page 56

Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the
clips gently.
8. 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.
9. Turn the DIMM so that the DIMM keys align correctly with the connector.
10. Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the ends of the
DIMM connector.
11. 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.
Figure 26. DIMM installation
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.
12. If you have other devices to install, do so now. Otherwise, go to
75.
To install a DIMM on the 5U server model with hot-swap power supplies, complete the following steps. For
4U server models with non-hot-swap power supplies, please see the above sub-section.
1. Read the safety information in
2. Turn off the server and peripheral devices, and disconnect the power cords and all external cables.
3. Unlock and remove the side cover (see
4. Carefully turn the server on its side so that it is lying flat, with the system board facing up.
Attention: Do not allow the server to fall over.
5. Locate the DIMM connectors on the system board. Determine the connectors into which you will install
the DIMMs. Install the DIMMs in the sequence shown in the following table.
Table 7. DIMM installation sequence
Number of DIMMs
First pair of DIMMs
Second pair of DIMMs
6. Open the retaining clips and, if necessary, remove any existing DIMM.
Lenovo System x3100 M5 Installation and Service Guide
44
"Safety" on page v and
"Removing the side cover" on page
Installation sequence (connectors)
1, 3
2, 4
"Completing the installation" on page
"Installation guidelines" on page
34).
31.