Lenovo ThinkSystem SN550, Maintenance Manual

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• Handle memory modules with care: never bend, twist, or drop a memory module.
Note: Remove or install DIMMs for one processor at a time.
Step 1. Locate the DIMM connectors. Determine which DIMM connector you want to install the DIMM.
Step 2. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the
Lenovo Flex System chassis or any unpainted metal surface on any other grounded rack
component in the rack in which you are installing the DIMM for at least 2 seconds; then, remove the
DIMM from its package.
Step 3. Make sure that both retaining clips on the DIMM connector are in the open position.
Attention:
• DIMMs are static-sensitive devices. The package must be grounded before it is opened.
• To avoid breaking the retaining clips or damaging the DIMM connector, handle the clips gently.
Figure 29. Opening retaining clip
Notes:
• If necessary, due to space constraints, you can use a pointed tool to open the retaining clips.
Place the tip of the tool in the recess on the top of the retaining clip; then, carefully rotate the
retaining clip away from the DIMM connector.
• The retaining clips for adjacent DIMM connectors of processor one and processor two can not
be open at the same time. Remove or install the DIMMs for each processor one at a time.
Step 4. Turn the DIMM so that the DIMM keys align correctly with the DIMM connector on the system
board.
Step 5. Press the DIMM into the DIMM connector. The retaining clips lock the DIMM into the connector.
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ThinkSystem SN550 Compute Node Maintenance Manual