Lenovo ThinkSystem ST550 7X09, Руководство по обслуживанию

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Processor and heat sink replacement
Use the following procedures to replace an assembled processor and heat sink, known as a processor-heat-
sink module (PHM), a processor, or a heat sink.
Attention: Before you begin replacing a processor, make sure that you have an alcohol cleaning pad (part
number 00MP352). You should use blue thermal grease (part number 01KP765) when replacing the
processor if that grease is available in your country. If it is not available, use gray thermal grease (part number
41Y9292).
Important: The processor in your server can throttle, temporarily lowering speed to reduce heat output, in
response to thermal conditions. In instances where the throttling period is of extremely short duration (100
ms or less), the only indication will be an entry in the event log. In these instances the event can be ignored
and processor replacement is not required.
Remove a processor and heat sink
Processors are in the compute system boards that are accessed from the front of the server. This task has
instructions for removing an assembled processor and heat sink, known as a processor-heat-sink module
(PHM), a processor, and a heat sink. All of these tasks require a long-shank, Torx T30 screwdriver with a
minimum shank length of 105 mm (4.1 inches).
“ Read the
installation
Guidelines” on
page 59
“ Power off
the server
for this task”
on page 12
“ ATTENTION:
Static Sensitive Device
Ground package before opening”
on page 60
Attention:
• Each processor socket must always contain a cover or a PHM. When removing or installing a PHM,
protect empty processor sockets with a cover.
• Do not touch the processor socket or processor contacts. Processor-socket contacts are very fragile and
easily damaged. Contaminants on the processor contacts, such as oil from your skin, can cause
connection failures.
• Remove and install only one PHM at a time. If the system board supports multiple processors, install the
PHMs starting with the first processor socket.
• Do not allow the thermal grease on the processor or heat sink to come in contact with anything. Contact
with any surface can compromise the thermal grease, rendering it ineffective. Thermal grease can damage
components, such as electrical connectors in the processor socket. Do not remove the grease cover from
a heat sink until you are instructed to do so.
Before removing a PHM:
Note: The heat sink, processor, and processor retainer for your system might be different than those shown
in the illustrations.
1. If the server is installed in a rack, extend the server from the rack.
2. Remove the server cover. See “Remove the server cover” on page 68.
3. Remove the air baffle. See “Remove the air baffle” on page 72.
4. Remove any parts and disconnect any cables that might impede your access to the PHM.
To remove a PHM, complete the following steps:
Watch the procedure . A video of the removal process is available:
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ThinkSystem ST550 Maintenance Manual