Cisco 3725 - Manual (Page 18)

18
Installing AC Power Supplies in Cisco 3725 Routers
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Troubleshooting
Troubleshooting
Check the following items to help isolate problems with the power supply installation:
• With the power switch on, is the power LED on the front panel on?
– If not, check the AC or DC input, AC or DC source, router circuit breaker, and the power supply
cable (AC) or power supply wiring (DC).
– Check the power supply connection to the motherboard.
– If the power LED is still off, the problem might be a power supply failure.
• Does the router shut down after being on a short time?
– Check the fans. If the fans are not working, the router will overheat and shut itself down.
– If the fans are not working, check the power supply connections to the fans.
– Ensure that the chassis intake and exhaust vents are clear.
– Check the environmental site requirements in your router installation and configuration guide.
Obtaining Documentation
The following sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following URL:
http://www.cisco.com
Translated documentation is available at the following URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM
package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may
be more current than printed documentation. The CD-ROM package is available as a single unit
or
through an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
• Registered Cisco Direct Customers can order Cisco product documentation from the Networking
Products MarketPlace:
http://www.cisco.com/cgi-bin/order_root.pl
• Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription
Store: