Use the information in this section to troubleshoot clicking
or rattling noises from a power supply or fan module.
Action
Complete the following steps until
the problem is solved:
- 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.
Important: 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.
- 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.