Installation/Settings Problems
0W20-05U
See Common Problems(P. 368) also.
Problems with the Wireless/Wired LAN Connection(P. 369)
Problem with the USB Connection(P. 372)
Problem with the Print Server(P. 372)
Problems with the Wireless/Wired LAN Connection
The wireless LAN and wired LAN cannot be connected at the same time.
● The wireless LAN and wired LAN cannot be connected at the same time. The following can be used at the
same time: a USB cable and a wireless LAN, or a USB cable and a wired LAN.
Remote UI is not displayed.
● Are <Use HTTP> and <Use Remote UI> set to <On>?
Disabling HTTP Communication(P. 232)
Disabling Remote UI(P. 233)
● If the machine is connected to a wireless LAN, check that the Wi-Fi indicator is lit and the IP address is set
correctly, and then start the Remote UI again.
Operation Panel(P. 24)
Viewing Network Settings(P. 161)
● If the machine is connected to a wired LAN, check that the cable is connected rmly and the IP address is set
correctly, and then start the Remote UI again.
Connecting to a Wired LAN(P. 135)
Viewing Network Settings(P. 161)
● Are you using a proxy server? If so, add the machine's IP address to the [Exceptions] list (addresses that do
not use the proxy server) in the Web browser's proxy settings dialog.
● Is communication not limited by the rewall on your computer? If IP addresses are or an MAC address is
incorrectly entered, the Remote UI cannot be displayed. In that case, you need to use the operation panel to
set <IPv4 Address Filter>, <IPv6 Address Filter>, or <MAC Address Filter> to <Off>.
Restricting Communication by Using Firewalls(P. 218)
IPv4 Address Filter(P. 339)
IPv6 Address Filter(P. 339)
MAC Address Filter(P. 340)
A connection to a network cannot be established.
● The IP address may not be set correctly. Set the IP address again.
Setting IP Addresses(P. 153)
● When you connect the machine to a computer via wireless LAN, check whether the machine is properly
installed and ready to connect to the network.
When the machine cannot connect to the wireless LAN(P. 370)
Troubleshooting
369
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