Cisco Systems 78 Manual De Usuario

Table 3-1 lists problems that could occur the first time you turn on the power 
switch.

All LEDs, 
including the OK 
LED, are off.

No power to the router. Perform the following steps:

Make sure that the power switch is set to ON.

Make sure that all connections to and from the power 
supply are secure.

Make sure that the power outlet has power.

If the problem continues, the power supply might be 
faulty. Contact your Cisco reseller.

No connection to 
Ethernet device. 
(Ethernet LED is 
off.)

A cable-related 
problem:

Improperly 
connected cable.

Damaged cable.

Perform the following steps:

To make sure that you have cabled the device 
correctly, see Figure 2-1 or Figure 2-2 in Chapter 2, 
“Installation.”

Make sure that the connectors at both ends of the 
cable are securely seated.

Make sure the cable is not physically damaged. If it 
is damaged, order another cable from Cisco 
Systems, or replace it with a similar cable.

Improperly set router 
TO HUB/TO PC 
button or hub 
equivalent of TO 
HUB/TO PC button.

To make sure that you have set the buttons correctly, see 
Table 2-2 in Chapter 2, “Installation.”