C H A P T E R
6
Replace Fan Module and Power Supply
Before you begin this task, ensure that you have read and understood the safety warnings in the
section of the
handout topic.
Replacing the Cisco NCS 540 involves these tasks:
•
Replace Fan Module, on page 45
•
Replace Power Supply, on page 46
Replace Fan Module
If you cannot replace a fan tray within three minutes, we recommend that you leave it in the chassis until you
are prepared to replace it within that specified time limit.
Caution
If you remove more than one fan tray at a time during operations, the router allows up to 2 minutes of operations
before shutting down, unless you replace extra missing fan trays within that time. If the router senses an over
temperature condition when multiple fan trays are removed, the shutdown can occur in less than 2 minutes.
Note
Step 1
Unscrew the captive thumbscrew at the front of the fan tray.
Cisco NCS 540 Router Hardware Installation Guide
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