Lenovo 7D2F, 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) and gray thermal grease (part number 41Y9292).
Important:
The processor in your server can throttle in response to thermal conditions, temporarily lowering
its speed to reduce heat output. In instances where a few processor cores are throttled for an extremely
short time period (100 ms or less), the only indication will be an entry in the operating system event log with
no corresponding entry in the system XCC event log. If this situation occurs, the event can be ignored and
processor replacement is not required.
Remove a processor and heat sink
Processors are on the system board and are to be accessed from the top of the server with top cover
removed. 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 Torx T30 driver.
“
Read
the
installation
Guidelines” on
page 49
“
Power off
the server
for this task”
on page 11
“
ATTENTION:
Static Sensitive Device
Ground package before opening”
on page 51
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.
• Thermal grease can stay functional on the heat sink for two years. When installing a new heat sink, make
sure to check the manufacturing date to ensure the thermal grease is still functioning. If the date is over
two years ago, replace the thermal grease to avoid seating issues.
Before you remove a PHM:
Note:
The heat sink, processor, and processor retainer for your system might be different than those shown
in the illustrations.
1. Read the safety information and installation guidelines (see “Safety” on page iii and “Installation
Guidelines” on page 49 ).
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
“Power off the server” on page 11 ).
3.
Watch the procedure
Chapter 3
.
Hardware replacement procedures
101