Appendix N    Trouble shooting and FAQ 
N-4 
 
N.3. Web Menu System 
Problem (P)  Possible cause  Confirmation item 
[Terminal] screen can not be displayed 
when the IP address of main unit was 
entered to the URL box on Web 
browser. 
Cable is not connected.  Check  that PC is  connected  to the main unit  with Ethernet cable firmly.  If 
there is a link between the main unit and PC, the Link LED of the Ether port 
on back panel will blink. 
Although the setting of the TCP/IP of the PC 
is set to “Automatic access”, the PC could not 
access the IP from the DHCP server. 
Before starting the PC, check that the cable between the main unit and the PC 
is connected correctly.    If the PC has been started not connected to the main 
unit, restart the PC after hooking up the main unit. 
TCP/IP is not set. 
 
Check that the network IP, subnet mask and default gateway that are set in the 
PC match those set in the main unit. 
*If you have set VLANs, each “User LAN Port” may have different network. 
URL is not correct.  Check that the IP address entered in URL box is that of main unit. 
*If you have set VLANs, each “User LAN Port” may have different network. 
The local area connection of the PC is 
disabled.  (Win2000 or later) 
Check that the local area connection is set to ‘enable’ in the property 
specification of the local area connection. 
The local area connection of the PC is a 
bridge connection. 
Delete the bridge by clicking the right mouse button on the icon of the local 
area connection. 
Error page is displayed when a button 
was clicked on Web menu screen. 
 
The version of Web browser is not supported. 
JUE-501  / JUE-251  officially  supports  Microsoft  Internet Explorer7  and 
Mozilla  Firefox3.6, their upper version can be available when 
compatible system.