Lenovo NeXtScale nx360 M5, Installation And Service Manual, Page: 214 / 1022

After you install the USB flash drive, complete the following steps:
1. Install the cover onto the compute node (see “Installing the compute node cover” on page 115 for
instructions).
2. Install the compute node into the chassis (see “Installing a compute node in a chassis” on page 105
for instructions).
Removing and replacing Tier 2 CRUs
You may install a Tier 2 CRU yourself or request Lenovo 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.
Before you remove a microprocessor and heat sink, complete the following steps:
1. Read “Safety” on page v and “Installation guidelines” on page 101.
2. If the compute node is installed in a NeXtScale n1200 Enclosure, remove it (see “Removing a compute
node from a chassis” on page 104 for instructions).
3. Carefully lay the compute node on a flat, static-protective surface, orienting the compute node with
the bezel pointing toward you.
• 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.
• 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.
• 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.
• 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.
• Each microprocessor socket must always contain either a socket cover or a microprocessor and heat sink.
• 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.
• When installing multiple microprocessors, open one microprocessor socket at a time to avoid damaging
other microprocessor socket contacts.
• 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: The installation tool has two settings for installing two different sizes of microprocessors. The
settings that are marked on tool are “L” for smaller low core microprocessors, and “H” for larger high core
microprocessors. Installation tool supports the following families of microprocessors: E5-26xx, E5-46xx,
E5-26xx v2, E5-46xx v2.
To remove a microprocessor and heat sink, complete the following steps:
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Lenovo NeXtScale nx360 M5 Installation and Service Guide