ZyXEL Communications NBG420N Manual Do Utilizador

Chapter 26 Troubleshooting

NBG420N User’s Guide

See the troubleshooting suggestions for 

 Ignore the suggestions about your browser.

V

I cannot access the Internet.

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See 

the Quick Start Guide.

2 Make sure you entered your ISP account information correctly in the wizard. These 

fields are case-sensitive, so make sure [Caps Lock] is not on.

3 If you are trying to access the Internet wirelessly, make sure the wireless settings in the 

wireless client are the same as the settings in the AP.

4 Disconnect all the cables from your device, and follow the directions in the Quick Start 

Guide again. 

5 Go to Maintenance > Sys OP Mode > General. Check your System Operation Mode 

setting. 
• Select Router if your device routes traffic between a local network and another 

network such as the Internet. 

• Select Access Point if your device bridges traffic between clients on the same 

network. 

6 If the problem continues, contact your ISP.

V

I cannot access the Internet anymore. I had access to the Internet (with the 
NBG420N), but my Internet connection is not available anymore.

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See 

the Quick Start Guide and 

2 Reboot the NBG420N.
3 If the problem continues, contact your ISP. 

V

The Internet connection is slow or intermittent.

1 There might be a lot of traffic on the network. Look at the LEDs, and check 

. If the NBG420N is sending or receiving a lot of information, try closing 

some programs that use the Internet, especially peer-to-peer applications.

2 Check the signal strength. If the signal strength is low, try moving the NBG420N closer 

to the AP if possible, and look around to see if there are any devices that might be