Lenovo System x3550 M4 Installation And Service Manual page 65

Step 1. Read the safety information that begins on "Safety" on page v and "Installation guidelines"
on page 31.
Step 2. Turn off the server and peripheral devices and disconnect the power cords and all external cables,
if necessary.
Step 3. Remove the cover (see "Removing the cover" on page 34).
Step 4. Remove the air baffle (see "Removing the air baffle" on page 34).
Step 5. Carefully open the retaining clips on each end of the DIMM connector and remove the DIMM.
Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and
close the clips gently.
Figure 38. DIMM removal
Step 6. 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.
Step 7. Turn the DIMM so that the alignment slot align correctly with the alignment tab.
Step 8. 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" on page 30 for the locations
of the DIMM connectors).
Step 9. 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.
If you have other devices to install or remove, do so now. Otherwise, go to "Completing the installation"
on page 89.
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Chapter 2 Installing optional devices
51