Desktop Computer Hardware Maintenance Manual

3. To reinstall the front bezel, align the plastic tabs on the right side of the front
bezel with the corresponding holes in the chassis, and then pivot the front
bezel inward until it snaps into position on the left side.
4. Go to “Completing the FRU replacement” on page 122.
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 replace a memory module.
Your computer has four slots for installing or replacing DDR3 DIMMs (double data
rate 3 dual inline memory modules) that provide up to a maximum of 8 GB of
system memory.
When installing or replacing memory modules, use the following guidelines:
v Use 1.8 V, 240-pin DDR3 SDRAM (double data rate 3 synchronous dynamic
random access memory).
v Use 1 GB or 2 GB memory modules in any combination up to a maximum of 8
GB.
Note:
Only DDR3 SDRAM DIMMs can be used.
To replace a memory module:
1. Remove the computer cover. See “Removing the computer cover” on page 86.
2. Locate the memory slots. See “Locating parts on the system board” on page 89.
3. Remove the memory module being replaced by opening the retaining clips as
shown.
Figure 7. Removing the memory module
Chapter 8. Replacing FRUs - Tower computers 91