Dimm Replacement Procedure - Cisco UCS C240 M4 Installation And Service Manual
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Chapter 3
Maintaining the Server
DIMM Replacement Procedure
This section includes the following topics:
•
•
Identifying a Faulty DIMM
Each DIMM socket has a corresponding DIMM fault LED, directly in front of the DIMM socket. See
Figure 3-3
these LEDs from the SuperCap power source, remove AC power cords and then press the Unit
Identification button.
Replacing DIMMs
Step 1
Power off the server as described in
Step 2
Slide the server out the front of the rack far enough so that you can remove the top cover. You might have
to detach cables from the rear panel to provide clearance.
Caution
If you cannot safely view and access the component, remove the server from the rack.
Remove the top cover as described in
Step 3
Step 4
Remove the air baffle that sits over the DIMM sockets and set it aside.
Step 5
Identify the faulty DIMM by observing the DIMM socket fault LEDs on the motherboard (see
Figure
Remove the DIMMs that you are replacing. Open the ejector levers at both ends of the DIMM socket,
Step 6
and then lift the DIMM out of the socket.
Install a new DIMM:
Step 7
Note
a.
b.
Replace the air baffle.
Step 8
Replace the top cover.
Step 9
Replace the server in the rack, replace cables, and then power on the server by pressing the Power button.
Step 10
OL-32474-01
Identifying a Faulty DIMM, page 3-23
Replacing DIMMs, page 3-23
for the locations of these LEDs. The LEDs light amber to indicate a faulty DIMM. To operate
3-3).
Before installing DIMMs, see the population guidelines. See
and Population Rules, page
Align the new DIMM with the empty socket on the motherboard. Use the alignment key in the
DIMM socket to correctly orient the DIMM.
Push down evenly on the top corners of the DIMM until it is fully seated and the ejector levers on
both ends lock into place.
Shutting Down and Powering Off the Server, page
Removing and Replacing the Server Top Cover, page
3-20.
Cisco UCS C240 M4 Server Installation and Service Guide
Installing or Replacing Server Components
3-9.
Memory Performance Guidelines
3-10.
3-23
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