Removing and replacing FRUs
This information provides an overview for removing and replacing FRUs.
FRUs must be replaced or installed only by trained service technicians.
The illustrations in this document might differ slightly from the hardware.
Removing a microprocessor and heat sink
This information provides instructions on how to remove a microprocessor and
heat sink.
About this task
Attention:
v Be extremely careful, the microprocessor socket contacts are very fragile.
v Do not allow the thermal grease on the microprocessor and heat sink to come in
contact with anything. Contact with any surface can compromise the thermal
grease and the microprocessor socket.
v Do not touch the microprocessor contacts. Contaminants on the microprocessor
contacts, such as oil from your skin, can cause connection failures between the
contacts and the socket.
v Use the microprocessor installation tool that came with the new microprocessor
to remove and install the microprocessor.
To remove a microprocessor and heat sink, complete the following steps:
Note: This procedure for removing a microprocessor and heat sink also apply
when removing a microprocessor and heat sink from the microprocessor and
memory expansion tray.
Procedure
1. Read the safety information and installation guidelines, see “Safety” on page
vii and “Installation guidelines” on page 35.
2. Turn off the server (see “Turning off the server” on page 22) and all attached
peripheral devices. Disconnect all power cords; then, disconnect all external
cables as necessary to replace the device.
3. Remove the server cover (see “Removing the server top cover” on page 226).
4. Disconnect any cables that impede access to the heat sink and microprocessor.
5. If you are replacing a microprocessor on the system board, remove the
microprocessor and memory expansion tray (see “Removing the
microprocessor and memory expansion tray assembly” on page 305).
6. Remove the DIMM air baffle, if one is installed (see “Removing the DIMM air
baffle” on page 232).
7. Remove the microprocessor air baffle, if one is installed (see “Removing the
microprocessor air baffle” on page 230).
8. Remove the heat sinks:
a. Use a screwdriver to loosen the captive screw on one side of the heat sink
to break the seal with the microprocessor.
b. Loosen all the captive screws on the heat sink, rotating each screw one full
turn until each screw is loose.
Chapter 6. Removing and replacing components 299
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