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OptiPlex 5400 Service Manual

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Installing the heat sink—35 W

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

NOTE: If either the system board or the heat sink is replaced, use the thermal pad/paste provided in the kit to ensure that thermal conductivity is achieved.

About this task

The following image indicates the location of the heat sink and provides a visual representation of the installation procedure.

Image: Installing the heat sink

Steps

  1. Align the screw holes on the heat sink with the screw holes on the system board and the display-assembly base.
  2. In sequential order (as indicated on the heat sink), tighten the five captive screws that secure the heat sink to the system board and display-assembly base.

Next steps

  1. Install the system fan.
  2. Install the system-board shield.
  3. Install the back cover.
  4. Install the cable cover (optional).
  5. Install the stand.
  6. Follow the procedure in After working inside your computer.

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