Installing Or Replacing A Memory Module - Lenovo ThinkCentre Hardware Maintenance Manual

Figure 11. Removing the computer wall mount
9. To reinstall the computer wall mount, position the wall mount on the computer main bracket and align
the screw holes in the wall mount with those in the computer main bracket.
10. Reinstall the four screws to secure the wall mount to the computer main bracket.
11. Reconnect the thermal sensor cable to the system board. See "System board connectors" on page 68.
12. Reinstall the wall mount cover. See "Removing or reinstalling the wall mount cover" on page 73.
13. Go to "Completing the parts replacement" on page 108.

Installing or replacing a memory module

Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety
information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy
of the ThinkCentre Safety and Warranty Guide, go to:http://www.lenovo.com/support
This section provides instructions on how to install or replace a memory module.
Your computer has two slots for installing or replacing DDR3 SODIMMs (small outline dual inline memory
modules). When installing or replacing a memory module, use 1 gigabytes (GB) or 2 GB DDR3 SODIMMs in
any combination up to a maximum of 4 GB of system memory.
To install or replace a memory module, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See "Removing the computer cover" on page 69.
4. Locate the memory slots. See "FRU locations" on page 67.
.
Chapter 8 Replacing FRUs
75