Lenovo ThinkCentre M83 Hardware Maintenance Manual page 107

installation sequence. To locate the memory module slots, see "Locating parts on the system board"
on page 72.
UDIMM
One UDIMM
Two UDIMMs
Three UDIMMs
Four UDIMMs
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. Remove the computer cover. See "Removing the computer cover" on page 93.
3. Lay the computer on its side for easier access to the system board.
4. Locate the memory slots. See "Locating parts on the system board" on page 72.
5. Remove any parts that might prevent your access to the memory slots. Depending on your computer
model, you might need to remove the PCI Express x16 graphics card for easier access to the memory
slots. See "Installing or replacing a PCI card" on page 95.
6. Depending on whether you are installing or replacing a memory module, do one of the following:
• If you are replacing an old memory module, open the retaining clips and gently pull the memory
module out of the memory slot.
Figure 24. Removing a memory module
Chapter 8
DIMM 1 DIMM 2
X, 3
X, 3
.
Replacing FRUs (machine types: 10A0, 10A1, 10A6, 10A7, 10AG, 10AK, 10AL, and 10BE)
DIMM 3
X
X, 1
X, 1
X, 1 X, 4
DIMM 4
X, 2
X, 2
X, 2
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