Personal Computer User Manual

Installing System Components 61
7 Align the memory module's edge connector with the alignment key of the memory module socket, and
insert the memory module in the socket.
NOTE: The memory module socket has an alignment key that allows you to install the memory module in the
socket in only one way.
8 Press down on the memory module with your thumbs while pulling up on the ejectors with your index
fingers to lock the memory module into the socket.
When the memory module is properly seated in the socket, the ejectors on the memory module socket
align with the ejectors on the other sockets that have memory modules installed.
9 Repeat step 5 through step 8 of this procedure to install the remaining memory modules. See
Table3-2 or Table3-3 .
10 Replace the cooling shrouds. See "Removing and Replacing the Cooling Shrouds" on page 50.
11 Close the system. See "Closing the System" on page 47.
12 Start up the system, press <F2> to enter the System Setup program, and check the System Memory
setting on the main
System Setup screen.
The system should have already changed the value to reflect the newly installed memory.
13 If the value is incorrect, one or more of the memory modules may not be installed properly. Repeat
step 2 through step 12 of this procedure, checking to ensure that the memory modules are firmly
seated in their sockets.
14 Run the system memory test in the system diagnostics. See "Running the System Diagnostics" on
page 117.
Removing Memory Modules
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: The memory modules are hot to the touch for some time after the system has been powered down.
Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges
and avoid touching the components on the memory module.
1 Turn off the system, including any attached peripherals, and disconnect the system from the electrical
outlet.
2 Open the system. See "Opening the System" on page 46.
3 Remove the cooling shrouds. See "Removing the Cooling Shrouds" on page 49.
4 Locate the memory module sockets. See Figure 6-2.
5 Press down and out on the ejectors on each end of the socket until the memory module pops out of the
socket. See Figure 3-10.
Handle each memory module only on either card edge, ensuring not to touch the middle of the
memory module.