Removing A Memory Module; Installing A Hot-Swap Power Supply - IBM 7979B1U User Manual

Removing a memory module

To remove a DIMM, complete the following steps.
1. Read the safety information that begins on page vii and "Installation guidelines"
2. Turn off the server and peripheral devices, and disconnect the power cord and
3. Remove the cover (see "Removing the cover" on page 31).
4. Remove the riser-card assembly (see "Removing the riser-card assembly" on
5. Remove the air baffle over the DIMMs (see "Removing the DIMM air baffle" on
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 supply

Attention:
power supplies and connecting and disconnecting power refers to ac power
supplies only. If the server contains dc power supplies, see the documentation that
comes with the dc power supplies. In a dc power environment, only trained service
personnel other than IBM service technicians are authorized to connect or
disconnect power to the dc power supply and to install and remove a dc power
supply.
The server supports a maximum of two hot-swap ac power supplies.
Important: Only the configurations that are shown in the following table are
supported. The fan numbers are printed on the microprocessor air baffle.
72
System x3650 Type 7979: User's Guide
on page 28.
all external cables.
Attention: In a dc power environment, only trained service personnel other
than IBM service technicians are authorized to connect or disconnect power to
the dc power supply. See the documentation that comes with each dc power
supply.
page 32).
page 36).
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
The information in this document regarding installing and removing