Replacing a memory module
1. Remove the left-side cover. See “Removing the covers” on page 84.
2. Locate the memory connectors. See “Identifying parts on the system board” on
page 87.
3. Open the retaining clips and remove the failing memory module.
4. Make sure the notch 1 on the new memory module is aligned correctly with
the connector key 2 on the socket. Insert the memory module straight down
into the connector until it snaps into position and the retaining clips are closed.

5. Go to “Completing the FRU replacement” on page 112.

90 Lenovo 3000 J Series