3-21
Cisco UCS C220 M4 Server Installation and Service Guide
OL-32473-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
DIMM Replacement Procedure
This section includes the following topics:
•
Identifying a Faulty DIMM, page 3-21
•
Replacing DIMMs, page 3-21
Identifying a Faulty DIMM
Each DIMM socket has a corresponding DIMM fault LED, directly in front of the DIMM socket. See
Figure 3-3
for the locations of these LEDs. The LEDs light amber to indicate a faulty DIMM. To operate
these LEDs from the supercap power source, remove AC power cords and then press the
unit
identification
button. See also
Internal Diagnostic LEDs, page 3-6
.
Replacing DIMMs
Step 1
Remove the DIMM that you are replacing:
a.
Power off the server as described in the
Shutting Down and Powering Off the Server, page 3-7
.
b.
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.
c.
Remove the top cover as described in
Removing and Replacing the Server Top Cover, page 3-8
.
d.
Identify the faulty DIMM by observing the DIMM slot fault LEDs on the motherboard.
e.
Open the ejector levers at both ends of the DIMM slot, and then lift the DIMM out of the slot.
Step 2
Install a new DIMM:
Note
Before installing DIMMs, see the population guidelines:
Memory Performance Guidelines and
Population Rules, page 3-18
.
f.
Align the new DIMM with the empty slot on the motherboard. Use the alignment key in the DIMM
slot to correctly orient the DIMM.
g.
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.
h.
Replace the top cover.
i.
Replace the server in the rack, replace cables, and then power on the server by pressing the
Power
button.
