Wireless LAN Troubles (MF4890dw/MF4720w Only)

See the following sections:

The SSID of the Wireless LAN Router/Access Point is Not Displayed in the List of Access Points

Check the SSID of the wireless LAN router or access point using Canon MF/LBP Wireless Setup Assistant, and repeat the setup again.

"Checking the SSID or Network Key of the Wireless LAN Router/Access Point"

"Setting by Manually Selecting an Access Point"

Check network connection.

"Checking Network Connection (Wireless LAN)"

If the access point cannot be determined even after checking the network connection, check the security settings of the wireless LAN router or access point, and repeat the setup again.

"When Security Settings on the Wireless LAN Router/Access Point are Changed"

The Remote UI is Not Displayed

Check the DHCP function of the wireless LAN router or access point network key.
At factory shipment, the machine's default settings have <DHCP> and <Auto IP> enabled so it obtains an IP address automatically.
Enable the DHCP function on the wireless LAN router or access point and repeat the setup again.

DHCP function: A function that automatically assigns an IP address and other necessary information to each device connected to a network or a computer that is connected to a network. For information on checking and setting methods, refer to the instruction manual of the wireless LAN router or access point, or contact the manufacturer.

Check whether the IP address of the machine matches the sub-network address of the computer's IP address.
If the sub-network addresses do not match, change each of the machine's IP address so they match.

"Setting the IP Address"

To view the IP address of the machine, follow the steps below.

"Confirming IP Address Settings"

General Network Address Determination Method:

When the subnet mask is set as "255.255.255.0", it is the same value as the IP address with the part that is furthest to the right replaced by a "0".

Ex.:

IP Address: 192.168.127.123

Subnet Mask: 255.255.255.0

Subnetwork address of the above example: 192.168.127.0

A connection cannot be made across a router. Use within the same segment (in an environment that does not cross a router).

Check whether you have selected the wrong SSID.
Check the SSID of the wireless LAN router or access point using Canon MF/LBP Wireless Setup Assistant, and repeat the setup again.

"Checking the SSID or Network Key of the Wireless LAN Router/Access Point"

"Setting by Manually Selecting an Access Point"

Check the wireless LAN router or access point network key (WEP key.)

Enter the correct network key (WEP key) and repeat the setup again.

For information on how to check the network key (WEP key), refer to the instruction manual of the wireless LAN router or access point, or contact the manufacturer.

Make sure that <IPv4 Address Range Settings> or <IPv6 Address Range Settings> is not specified for the machine.

If it is specified, change the setting so that IP address and MAC address of your computer can be permitted.

"Restricting Access from Specific IP Addresses"

"Allowing Access from Specific MAC Addresses"

Check to see if <SNMPv1 Settings> is set to <Off> for the machine.

You may not be able to specify and browse each item of the machine from utility software that uses the SNMP protocol to obtain the information.

Change <SNMPv1 Settings> to <On> when it is set to <Off>.

When <SNMPv1 Settings> is set to <On>, the machine cannot be recognized when accessed from the utility software with a community name different from the machine setting. If it cannot be recognized, check your community name.

"Setting SNMPv1"

Make sure that <Dedicated Port Settings> is <On>.

"Setting the Dedicated Port for Scanning"

Do Not Know the SSID or Network Key for the Wireless LAN Router/Access Point

Check the SSID of the wireless LAN router or access point using the Canon MF/LBP Wireless Setup Assistant.

"Checking the SSID or Network Key of the Wireless LAN Router/Access Point"

The Connection is Bad (Slow or Unavailable Connection)

Check network connection. See the Starter Guide.

When multiple networks are used:

Check whether each communication channel of the wireless LAN router or access point is spaced five or more channels apart.
Not setting the channels far enough away from one another may lead to interference between channels. Set the channel as far apart from other network channels as possible such as Ch.1, Ch.6, and Ch.11.

For information on checking and setting methods for channels, refer to the instruction manual of the wireless LAN router or access point, or contact the manufacturer.

Unable to Communicate After Turning the Power OFF and ON to Restart the Machine

If the machine's power is turned OFF and ON it is because a new IP address has been assigned.
When using DHCP, consult your network administrator and perform one of the following:

Setting the DNS Dynamic Update function

"Setting IPv4 DNS"

Setting the machine so that it uses the same IP address every time it starts up

The Printer Port Name is Not Displayed in [Print to the following port(s)]

Make sure that the correct printer driver is installed to your computer.

When switched to wireless LAN connection from the other method (USB connection or wired LAN connection), uninstall the MF driver.
Once uninstallation is complete, reinstall the MF driver. See the Starter Guide.

Check the printer folder to make sure that the printing destination of the computer is set to the machine.

The Machine Automatically Connects to the Wrong Destination via the Dial-up Connection (When Using a Dial-up Router)

If the broadcast does not need to traverse the dial-up router, configure the dial-up router so that the broadcast does not traverse it. If the broadcast needs to traverse the dial-up router, run a check the dial-up router settings.

When a DNS server exists in the external network, specify the destination IP address instead of the host name. This also applies when the device to which you want to connect the machine and the machine exist on the same network.

When a DNS server and the machine exist on the same network and the device registered on the DNS server exists in the external network, run a check the settings.

When Security Settings on the Wireless LAN Router/Access Point are Changed

Certain settings on the wireless LAN router or access point will not allow connection/communication with the machine.
Connection/communication with the machine is not possible under the following settings.

For information on wireless LAN router or access point settings, refer to the instruction manual of the wireless LAN router or access point, or contact the manufacturer.

The machine is not able to find the wireless LAN router/access point for the following:

Stealth function: Enabled

A function that prevents a wireless LAN router or access point from displaying its SSID on other devices.

To connect without disabling the stealth function, enter the settings manually.

"Setting by Manually Entering SSID"

Deny ANY: Enabled

A function on a wireless LAN router or access point that denies connection with a device whose SSID is set to "Any" or is left empty.

To connect without disabling Deny ANY, enter the settings manually.

"Setting by Manually Entering SSID"

Channels: Ch.1 through Ch.11 (US)

-	Channels used for communication. When multiple networks are used, to avoid interference between the channels, each network will be set to a channel that is as far apart from other network channels as possible such as Ch.1, Ch.6, and Ch.11.

The machine cannot connect with the wireless LAN router/access point:

MAC address filtering: The MAC addresses of the machine or certain computers are denied access.

-	A function on the wireless LAN router or access point that denies communication with all devices other than those whose MAC addresses (a unique identifier number given to each device) are registered in the wireless LAN router or access point.

The Remote UI is not displayed because the machine cannot communicate with the wireless LAN router/access point:

WEP key number that you are using: Set from 2 to 4

To communicate without changing the settings of the wireless LAN router/access point, input the settings manually.

"Setting by Manually Entering SSID"

Automatically generated WEP key on wireless LAN router or access point (Hexadecimal)

To communicate without changing the settings of the wireless LAN router/access point, input the settings manually.

"Setting by Manually Entering SSID"

An encryption method used when only IEEE802.11n communication is used: WEP or TKIP