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Processor and heat sink replacement

Follow the instruction in this section to replace an assembled processor and heat sink, known as a processor-heat-sink module (PHM), a processor, or a heat sink.

Before you begin replacing a processor, make sure that you have an alcohol cleaning pad (part number 00MP352) and thermal grease.

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 might 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.

When the server has a Liquid to Air Module (L2AM) installed, you must apply for a L2AM module handle (L2AM heat sink bracket) first if you need to install or remove the system board assembly or processor. However, while replacing the old L2AM with a new one, you do not need to apply for a module handle (L2AM heat sink bracket) as the new L2AM package contains it.

This section is for processor and heat sink replacement. For the replacement of the Liquid to Air Module (L2AM), refer to Lenovo Neptune(TM) Liquid to Air Module replacement (trained technicians only).