2. Check the installation for any airflow restrictions at either the front or rear of the enclosure. A
minimum gap of 1 in. (25 mm) at the front and 2 in. (50 mm) at the rear is recommended.
3. Check for restrictions due to dust buildup. Clean.
4. Check for excessive recirculation of heated air from rear to the front. Use of the enclosure in a
fully enclosed rack is not recommended.
5. If possible, shut down the enclosure and investigate the problem.
Hardware faults
Ensure that you obtained a replacement module of the same type before removing any faulty module.
Important: If the enclosure is powered on and you remove a module, replace it immediately. If the
system is used with any modules that are missing for more than a few seconds, the enclosure can
overheat, causing power failure and data loss. Such action invalidates the warranty.
Important: Observe all conventional ESD precautions when handling modules and components. Avoid
contact with midplane components and module connectors.
Chapter 5. Troubleshooting 39
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