6. Reconnect the power cords and any cables that you may have removed.
7. Turn on the peripheral devices and the server.
Removing and replacing Tier 2 CRUs
You may install a Tier 2 CRU yourself or request IBM to install it, at no additional
charge, under the type of warranty service that is designated for your server.
The illustrations in this document might differ slightly from your hardware.
Removing a microprocessor and heat sink
Use this information to remove a microprocessor and heat sink.
About this task
v Microprocessors are to be removed only by trained technicians.
Important: Always use the microprocessor installation tool to remove a
microprocessor. Failing to use the microprocessor installation tool may damage
the microprocessor sockets on the system board. Any damage to the
microprocessor sockets may require replacing the system board.
v Be extremely careful, the microprocessor socket contacts are very fragile. Do not
touch the microprocessor socket contacts. Contaminants on the microprocessor
contacts or microprocessor socket contacts, such as oil from your skin, can cause
connection failures between the contacts and the socket.
v Do not allow the thermal grease on the microprocessor and heat sink to come in
contact with anything. Contact with any surface can contaminate the thermal
grease and the microprocessor socket.
v Do not use any tools or sharp objects to lift the locking levers on the
microprocessor socket. Doing so might result in permanent damage to the
system board.
v Each microprocessor socket must always contain either a socket cover or a
microprocessor and heat sink.
v Be sure to use only the installation tools provided with the new microprocessor
to remove or install the microprocessor. Do not use any other tool.
v When installing multiple microprocessors, open one microprocessor socket at a
time to avoid damaging other microprocessor socket contacts.
v The microprocessor installation tool has the microprocessor installed on the tool,
and may have a protective cover over the microprocessor. Do not use the tool, or
remove the cover until you are instructed to do so.
Note: Be sure to use the installation tool that comes with your microprocessor
installation tool assembly. The tool has two settings for installing two different
sizes of microprocessors. The settings that are marked on the tool are “L” for
smaller low core microprocessors, and “H” for larger high core microprocessors.
Chapter 5. Removing and replacing components 247
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