Processor And Heat Sink Replacement; Technician Only) - Lenovo ThinkEdge SE455 V3 User Manual

Processor and heat sink replacement (trained technician only)
Follow the instruction in this section to remove or install a processor or a heat sink.
Important:
• This task must be operated by trained technicians that are certified by Lenovo Service. Do no attempt to
remove or install it without proper training and qualification.
• Before replacing a processor, check the current PSB fuse policy. See Service process before replacement
at Service process for updating PSB fuse
• After replacing a processor, ensure that the processor fuse status is expected without unexpected XCC
event logs. See Service process after replacing a processor at
state.
Attention:
• Before reusing a processor or heat sink, make sure you use Lenovo proven alcohol cleaning pad and
thermal grease.
• Each processor socket must always contain a cover or a processor. When replacing a processor, protect
the empty processor socket 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 a heat sink
Follow instructions in this section to remove a heat sink. This task requires a Torx T20 driver. The 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 39
work safely.
• If applicable, remove the security bezel. See
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
"Power off the server" on page
state.
and "Safety inspection checklist" on page 40
"Remove the security bezel" on page
48.
Service process for updating PSB fuse
195.
.
Chapter 5 Hardware replacement procedures
to ensure that you
181