Troubleshooting - ZyXEL Communications Zy-Air B-420 Quick Installation Manual

7 Troubleshooting

PROBLEM
The PWR LED is
off.
The ETHN LED is
off.
I cannot access
the web
configurator.
ZyAIR B-420 Wireless LAN Ethernet Adapter and Bridge
Make sure you are using the correct power adaptor and the power adaptor is
plugged into an appropriate power supply.
Unplug the power adaptor and plug it in again. If the error persists, you may have a
hardware problem. In this case, you should contact your vendor.
Check the cable connection to the ZyAIR ETHERNET port.
Make sure your computer's network card is working properly.
Make sure the IP addresses and subnet masks of the ZyAIR and the computer are
in the same IP address range. (For example, if the ZyAIR is using the default IP
address and subnet mask, check that the IP address of the computer is in the range
192.168.1.11 ~192.168.1.254, except 192.168.1.11, and the subnet mask is
255.255.255.0). Refer to the Setting Up Your Computer's IP Address section.
If you changed the ZyAIR default IP address, then enter the new IP address as the
web site address.
The default password is "1234". If you have changed the password and have now
forgotten it, you will need to reset the ZyAIR. Refer to the User's Guide for how to
use the RESET button.
CORRECTIVE ACTION
20