• 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.
• 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 the electrical connectors in the processor socket.
• Remove and install only one PHM at a time. If the processor board supports multiple processors, install
the PHMs starting with the first processor socket.
Note: The heat sink, processor, and processor carrier for your system might be different from those shown
in the illustrations.
The following illustration shows the components of the PHM.
Figure 110. PHM components
1 Heat sink
9 Clips to secure processor in carrier
2 Heat sink triangular mark
10 Carrier triangular mark
3 Processor identification label
11 Processor ejector handle
4 Nut and wire bail retainer 12 Processor heat spreader
5 Torx T30 nut 13 Thermal grease
6 Anti-tilt wire bail 14 Processor contacts
Chapter 5. Hardware replacement procedures 177
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