Removing a memory moduleTo remove a DIMM, complete the following steps.1. Read the safety information that begins on page vii and “Installation guidelines”on page 28.2. Turn off the server and peripheral devices, and disconnect the power cord andall external cables.Attention: In a dc power environment, only trained service personnel otherthan IBM service technicians are authorized to connect or disconnect power tothe dc power supply. See the documentation that comes with each dc powersupply.3. Remove the cover (see “Removing the cover” on page 31).4. Remove the riser-card assembly (see “Removing the riser-card assembly” onpage 32).5. Remove the air baffle over the DIMMs (see “Removing the DIMM air baffle” onpage 36).Attention: To avoid breaking the retaining clips or damaging the DIMMconnectors, open and close the clips gently.6. Open the retaining clip on each end of the DIMM connector.7. Lift the DIMM out of the connector.8. Replace the DIMM or remove the second DIMM of the pair.If you have other optional devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 81.Installing a hot-swap power supplyAttention: The information in this document regarding installing and removingpower supplies and connecting and disconnecting power refers to ac powersupplies only. If the server contains dc power supplies, see the documentation thatcomes with the dc power supplies. In a dc power environment, only trained servicepersonnel other than IBM service technicians are authorized to connect ordisconnect power to the dc power supply and to install and remove a dc powersupply.The server supports a maximum of two hot-swap ac power supplies.Important: Only the configurations that are shown in the following table aresupported. The fan numbers are printed on the microprocessor air baffle.72 System x3650 Type 7979: User’s Guide
