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Clicking or rattling noises

Use the information in this section to troubleshoot clicking or rattling noises from a power supply or fan module.


Complete the following steps until the problem is solved:
  1. Visually inspect the fan modules and power-supply fans to make sure that nothing (such as a wire or a broken fan blade) is touching the fan blades.
    If an object is touching or rubbing against a fan blade, be sure to shut down the chassis before you attempt to remove the object.
  2. Remove the fan modules and power supplies one at a time. If the noise stops, replace the fan module or power supply that you just removed.