Lenovo ThinkSystem SR650 Maintenance Manual page 193

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. Remove the top cover. See "Remove the top cover" on page 103.
2. Remove the air baffle. See "Remove the air baffle" on page 108.
3. 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:
• Youtube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-A25P7vBoGa_wn7D7XTgDS_
• Youku: http://list.youku.com/albumlist/show/id_50483444
Step 1. Remove the PHM from the system board.
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Chapter 3 Hardware replacement procedures
185