Lenovo 7D8T, Руководство по обслуживанию, Страница: 135 / 218

Processor and heat sink replacement
See these topics to learn how to remove and install a processor and heat sink.
Attention:
Before you begin replacing a processor, make sure that you have an alcohol cleaning pad (part
number 00MP352) and thermal grease.
Remove the processor and heat sink
This task has instructions for removing an assembled processor and heat sink, known as a processor-heat-
sink module (PHM). This task requires a Torx T30 driver. This procedure must be executed by a trained
technician.
About this task
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CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Attention:
• Read “Installation Guidelines” on page 41 to ensure that you work safely.
• Power off the server and disconnect all power cords for this task.
• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-
sensitive components in their static-protective packages until installation, and handling these devices with
an electrostatic-discharge wrist strap or other grounding system.
• If the server is in a rack, remove it from the rack.
• The processor socket must always contain a cover or a PHM. When removing or installing a PHM, make
sure to protect empty processor sockets immediately 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.
Chapter 3
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Hardware replacement procedures
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