Lenovo 6138A1U, User Manual

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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
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
system memory. When installing or replacing a memory module, use 1 GB or 2 GB
DDR3 DIMMs in any combination up to a maximum of 8 GB.
To install or replace a memory module:
1. Remove the computer cover. See “Removing the computer cover” on page 14.
2. Remove any parts that might prevent access to the memory slots.
3. Locate the memory slots. See “Locating parts on the system board” on page 11.
4. Open the retaining clips.
If you are replacing an old memory module, open the retaining clips and
remove the memory module being replaced as shown.
5. Position the memory module over the memory slot. Make sure that the notch
1
on the memory module aligns correctly with the slot key
2
on the system
board. Push the memory module straight down into the slot until the retaining
Figure 9. Opening the retaining clips
Figure 10. Removing the memory module
Chapter 2. Installing options and replacing hardware
19