Lenovo 3823, 3821, 3822, 3719 manual

The following illustration shows how to install DIMMs on the system board.

Attention: Static electricity that is released to internal server components when the server is powered on might cause the server to stop, which might result in the loss of data. To avoid this potential problem, always use an electrostatic-discharge wrist strap or other grounding system when you work inside the server with the power on.

To install a DIMM, do the following:

1.Read the safety information that begins on page 5.

2.Turn off the server and peripheral devices; then, disconnect the power cords and all external cables.

3.Remove the left-side cover (see “Removing the left-side cover” on page 157).

4.Remove the hot-swap power supply or power supplies from the server.

5.Pull up the power-supply cage handle, then swing the power-supply cage out of the server (see“Opening the power-supply cage” on page 158 for more information).

6.Remove the air baffle from the server (see “Removing the air baffle” on page 169 for more information).

7.Open the retaining clip on each end of the DIMM connector.

Attention: To avoid breaking the DIMM retaining clips or damaging the DIMM connectors, open and close the clips gently.

8.Touch the static-protective package containing the DIMM to any unpainted metal surface on the outside of the server. Then, remove the DIMM from the package.

9.Turn the DIMM so that the DIMM keys align correctly with the connector.

Chapter 7. Installing optional devices and replacing customer replaceable units 215