Cisco 3745 Przewodnik Instalacji Pobierz pdf (Strona 27)

Installing Field-Replaceable Units in Cisco 3745 Routers

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Troubleshooting

Check the following items to help isolate problems with the power supply installation:

• With the power switch on, is the corresponding system power supply LED on the front panel on?

See Figure 19 for LED status indicators.

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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).

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If the power LED is still off, the problem might be a power supply failure.

Figure 19 LED Indicators on the Cisco 3745 Router

• Does the router shut down after being on for a short time?

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Check the fans. If the fans are not working, the router overheats and shuts itself down.

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If the fans are not working, check the power supply connections to the fans.

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Ensure that the chassis intake and exhaust vents are clear.

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Check the environmental site requirements in your router installation and configuration guide.

72081

Cisco 3700 SERIES

SYS LED

ACT LED

SYS PS1 LED

-48V PS1 LED

-48 PS2 LED

SYS PS2 LED

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Cisco 3745 Przewodnik Instalacji Strona 27