ZyXEL Communications 660H Series User Manual

Prestige 660H Series Compact Guide 

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6  Troubleshooting 

None of the 
LEDs turn on 
when you turn 
on the Prestige. 

Make sure that you have the correct power adaptor connected to 
the Prestige and plugged in to an appropriate power source. Check 
all cable connections. 

If the LEDs still do not turn on, you may have a hardware problem. 
In this case, you should contact your local vendor. 

Cannot access 
the Prestige 
from the LAN. 

Check the cable connection between the Prestige and your 
computer or hub. Refer to the Rear Panel Connections section for 
details.  

Ping the Prestige from a computer on the LAN. Make sure your 
computer Ethernet adapter is installed and functioning properly. 

Cannot ping any 
computer on the 
LAN. 

If the LAN LEDs are all off, check the cable connections between 
the Prestige and your computers on the LAN. 

Verify that the IP address, subnet mask of the Prestige and the LAN 
computers are in the same IP address range. 

Cannot get a 
WAN IP 
address from 
the ISP. 

The WAN IP is provided after the ISP verifies the MAC address, 
host name or user ID. Find out the verification method used by your 
ISP and configure the corresponding fields. 

If the ISP checks the user ID, check your service type, user name, 
and password in the WAN Setup screen. 

Cannot access 
the Internet. 

Verify the Internet connection settings in the WAN Setup screen. 

Make sure you entered the correct user name and password.