Lenovo 42421A0, NVS-4200M, 42825BU, 4242X04 manual Replacing memory in the slot under the keyboard

6.With the notched end of the SO-DIMM toward the contact edge side of the socket, insert the SO-DIMM into the socket at an angle of about 20 degrees (1); then press it in firmly (2).

7.Pivot the SO-DIMM downward until it snaps into place.

8.Make sure that the SO-DIMM is firmly fixed in the slot and cannot be moved easily.

9.Put the memory slot cover back in place (1), close the cover (2), and tighten the two screws (3).

10.Reinstall the battery. See “Replacing the battery” on page 119.

11.Turn the computer over again. Connect the ac power adapter and cables to the computer; then turn it on.

Replacing memory in the slot under the keyboard

1.Turn off the computer; then disconnect the ac power adapter and all cables from the computer.

2.Close the computer display, and turn it over.

3.Remove the battery. See “Replacing the battery” on page 119.

Chapter 6. Replacing devices 137