Replacing a CPU and Heatsink
CPUs and their sockets are fragile and must be handled with extreme care to avoid damaging pins. The CPUs
must be installed with heatsinks and thermal interface material to ensure cooling. Failure to install a CPU
correctly might result in damage to the server.
Caution
Step 1
Remove the existing CPU/heatsink assembly from the server:
a) Shut down and remove power from the server as described in
Shutting Down and Removing Power From the Server,
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.
If you cannot safely view and access the component, remove the server from the rack.
Caution
c) Remove the top cover from the server as described in
Removing the Server Top Cover, on page 28
d) Use the T-30 Torx driver that is supplied with the replacement CPU to loosen the four captive nuts that secure the
assembly to the motherboard standoffs.
Alternate loosening the heatsink nuts evenly so that the heatsink remains level as it is raised. Loosen the
heatsink nuts in the order shown on the heatsink label: 4, 3, 2, 1.
Note
e) Lift straight up on the CPU/heatsink assembly and set it heatsink-down on an antistatic surface.
Cisco Application Services Engine Hardware Installation Guide
40
Maintaining the Server
Replacing a CPU and Heatsink
