IBM x3655 Service Guide - Page 80
Removing, memory, module, Installing
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Removing a memory module To remove a dual inline memory module (DIMM), complete the following steps. DIMM Retaining clip 1. Read the safety information that begins on page vii and "Installation guidelines" on page 35. 2. Turn off the server and all attached devices. 3. Disconnect all external cables and power cords. 4. Remove the cover (see "Removing the cover" on page 39). 5. Remove the riser-card assembly (see ″Removing the riser-card assembly″ on page 120). 6. Remove the air baffle (see "Removing the air baffle" on page 41). Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently. 7. Open the retaining clip on each end of the DIMM connector and lift the DIMM from the connector. 8. Replace the DIMM or remove the second DIMM of the pair. 9. If you are instructed to return the DIMM, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. Installing a memory module For information about the types of dual inline memory modules (DIMMs) that the server supports and other information that you must consider when installing DIMMs, see the User's Guide on the IBM System x Documentation CD. v The server comes with a minimum of two 512 MB DIMMs, installed in slots 1 and 2. When you install additional DIMMs, you must install two identical DIMMS at a time, in the order shown in the following table, to maintain performance: Table 3. DIMM installation sequence DIMMs 2 1 microprocessor installed DIMM connectors 1 and 2 2 microprocessors installed Not applicable 4 DIMM connectors 1 through 4 DIMM connectors 1 and 2 and 9 and 10 6 DIMM connectors 1 through 6 DIMM connectors 1 through 4 and 9 and 10 62 IBM System x3655 Type 7985: Problem Determination and Service Guide
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