Installing A Dimm - Lenovo x3650 M4 BD 5466 Installation And Service Manual

Installing a DIMM

Use this information to install a DIMM.
Note: The first DIMM connectors in every channel are white-colored, while the second DIMM connectors in
every channel are black-colored.
Step 1. Read the safety information that begins on page "Safety" on page v and "Installation guidelines"
on page 30.
Step 2. Turn off the server (see "Turning off the server" on page 19) and all attached peripheral devices.
Disconnect all power cords; then, disconnect all external cables as necessary to replace the device.
Step 3. Remove the server top cover (see "Removing the server top cover" on page 32).
Step 4. Rotate the hot-swap rear hard disk drive cage up (see "Rotating the hot-swap rear hard disk
drive cage up" on page 34
Step 5. Remove the PCI riser-card assembly (see "Removing a PCI riser-card assembly" on page 34.
Step 6. Remove the air baffle (see "Removing the air baffle" on page 36.
Step 7. Carefully flip 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.
Figure 46. DIMM installation
Step 8. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the
server. Then, remove the DIMM from the package.
Step 9. Turn the DIMM so that the DIMM keys align correctly with the connector.
Step 10. Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the end of
the DIMM connector. 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.
Important: 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.
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Lenovo System x3650 M4 BDInstallation and Service Guide