Appendix F Troubleshooting Hardware Components; Overview; Router Hardware Best Practices - Cisco NCS 5000 Series Hardware Installation Manual

Troubleshooting Hardware Components
This appendix describes how to identify and resolve problems that might occur with the hardware components
of a Cisco NCS 5000 Series routers.
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Overview

The key to success when troubleshooting the system hardware is to isolate the problem to a specific system
component. The first step is to compare what the system is doing to what it should be doing. Because a startup
problem can usually be attributed to a single component, it is more efficient to isolate the problem to a
subsystem rather than troubleshoot each separate component in the system.
Problems with the initial power up are often caused by a module that is not firmly connected to the backplane
or a power supply that has been disconnected from the power cord connector.
Overheating can also cause problems with the system, though typically only after the system has been operating
for an extended period of time. The most common cause of overheating is the failure of a fan module.

Router Hardware Best Practices

Use the recommendations in this section to ensure the proper installation, initialization, and operation of the
router.
This section includes the following topics:
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Overview, page 61
Router Hardware Best Practices, page 61
Power Supply Conditions, page 62
Installation Best Practices, on page 62
Initialization Best Practice, on page 62
Power Supply Conditions, on page 62
A P P E N D I X
Hardware Installation Guide for Cisco NCS 5000 Series Routers
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