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Remove a PCIe switch board heat sink

Follow instructions in this section to remove a PCIe switch board heat sink. The procedure must be executed by a trained technician.

About this task

Attention
  • 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.
  • 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 chassis from the rack. See Remove the server from rack.
  • Two people and one lifting device on site that can support up to 400 lb (181 kg) are required to perform this procedure. If you do not already have a lifting device available, Lenovo offers the Genie Lift GL-8 material lift that can be purchased at Data Center Solution Configurator. Make sure to include the Foot-release brake and the Load Platform when ordering the Genie Lift GL-8 material lift.
Note
Make sure you have an alcohol cleaning pad to clean the thermal grease.

Procedure

  1. Make preparation for this task.
    1. Remove the PCIe switch shuttle. See Remove the PCIe switch shuttle.
    2. Remove all the front PCIe adapters. See Remove a front PCIe adapter.
  2. Remove the PCIe switch board heat sink.
    1. Fully loosen all the screws on the heat sink in the diagonal pattern.
    2. Carefully lift the heat sink from the PCIe switch board.
      Note
      Loosen or tighten the screws with a torque screwdriver set to the proper torque. For reference, the torque required for the screws to be fully loosen or tighten is 0.9 newton-meters, 8 inch-pounds.
      Figure 1. PCIe switch board heat sink removal
      PCIe switch board heat sink removal
  3. With an alcohol cleaning pad, wipe off any thermal grease from the following components:
    • Heat spreader on the PCIe switch board
    • Bottom of the PCIe switch board heat sink

After you finish

  1. If you are replacing a PCIe switch board heat sink, install a new one. See Install a PCIe switch board heat sink.
  2. If you are replacing the PCIe switch board, remove it. See Remove the PCIe switch board.
  3. 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.