1. Read the safety information in “Safety” on page vii and “Installation
guidelines” on page 35.
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 “Removing the side cover” on page
38).
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 Installation sequence (connectors)
First pair of DIMMs 1, 3
Second pair of DIMMs 2, 4
6. Open the retaining clips and, if necessary, remove any existing DIMM.
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
7. Touch the static-protective package that contains the DIMM to any unpainted
metal surface on the server. Then, remove the new DIMM from the package.
8. Turn the DIMM so that the DIMM keys align correctly with the connector.
9. Insert the DIMM into the connector by aligning the edges of the DIMM with
the slots at the ends of the DIMM connector.
10. 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.
11. If you have other devices to install, do so now. Otherwise, go to “Completing
the installation” on page 82.
Figure 27. DIMM installation
48 System x3100 M5 Type 5457: Installation and Service Guide
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