Lenovo 3719, 3821, 3822, 3823 manual Removing a memory module

7.Reconnect the external cables and power cords; then, turn on the attached devices and turn on the server.

Removing a memory module

DIMM

Retaining clip

To remove a dual inline memory module (DIMM), do the following:

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

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

3.Turn the server on its side so that it is lying flat, with the cover facing up.

4.Unlock and remove the left-side cover (see “Removing the left-side cover” on page 157).

5.Remove the hot-swap power supply or power supplies from the power-supply cage (see “Removing a hot-swap power supply” on page 174).

6.Rotate the power-supply cage to its open position (see “Opening the power-supply cage” on page 158).

7.Remove the air baffle (see “Removing the air baffle” on page 169).

8.Locate the DIMM connectors on the system board (see “System-board internal connectors” on page 131).

Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, handle the clips gently.

9.Move the DIMM retaining clips on the side of the DIMM connector to the open position by pressing the retaining clips away from the center of the DIMM connector.

10.Using your fingers, lift the DIMM out of the DIMM connector.

11.If you are instructed to return the DIMM, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

210ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual