Lenovo ThinkSystem SR850, Руководство по обслуживанию, Страница: 108 / 184

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 blue thermal grease (part number 01KP765). Do not use gray thermal grease (part
number 41Y9292) when replacing a SR850 processor.
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 in the compute system boards that are accessed from the top 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 Torx T30 driver.
“ Read the
installation
Guidelines” on
page 51
“ Power off
the server
for this task”
on page 8
“ ATTENTION:
Static Sensitive Device
Ground package before opening”
on page 53
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 51).
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
“Power off the server” on page 8).
3. Watch the procedure . A video of this procedure is available from the following links:
• https://www.youtube.com/playlist?list=PLYV5R7hVcs-B2y7oAb54mfyuLrIusa_qE
• http://list.youku.com/albumlist/show/id_50483449
4. Remove the top cover (see “Remove the top cover” on page 130).
5. Remove the system board air baffle (see “Remove the system board air baffle and the power interposer”
on page 116) or the processor and memory expansion tray and the expansion tray air baffle (see
“Remove the processor and memory expansion tray” on page 110).
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ThinkSystem SR850 Maintenance Manual