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Remove a heat sink

Follow instructions in this section to remove a heat sink. This task requires a Torx T20 screwdriver.

About this task


This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.

disconnect all power
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.
  • Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

  • Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

  • 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.


Prepare the following screwdrivers to ensure you can install and remove the corresponding screws properly.

Torque screwdriver type listScrew Type
Torx T20 screwdriverTorx T20 screw


  1. Make preparation for the task.
    1. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top cover, or remove the server from the rack. See Remove the server from rack.
    2. Remove the top cover. See Remove the top cover.
    3. If your server comes with an air baffle or a middle cage, remove it first.
    4. Remove the system fan cage (only for removing the performance heat sink). See Remove the system fan cage.
  2. Remove the heat sink.
    • Do not touch the contacts on the bottom of the processor.

    • Keep the processor socket clean from any object to prevent possible damages.

    Figure 1. Removing a standard heat sink
    Removing a standard heat sink
    Figure 2. Removing a performance heat sink
    Removing a performance heat sink
    1. Fully loosen all the screws on the heat sink in the removal sequence shown on the heat-sink label.
    2. Carefully lift the heat sink from the processor socket.

After you finish

  • If you are replacing a heat sink, install a new heat sink. See Install a heat sink.

  • If you are replacing a processor, remove the processor. See Remove a processor.

  • If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

Demo video

Watch the procedure on YouTube