Canon MF211 Manual page 257

The network key (PSK) of a wireless router to be connected is not set to the machine correctly.
Check the network key (PSK) of the wireless router, and set it to the machine again.
Checking the SSID and Network Key
Setting Up Connection by Selecting a Wireless Router
Setting Up Connection by Specifying Detailed Settings
If the problem persists even after checking the network key, check whether the machine is properly installed and ready
to connect to the network.
Installation/Settings Problems
Could not connect using the wireless LAN.
A connection failed due to an error while setting wireless LAN connection.
Restart the machine and set again.
If the problem persists even after restarting the machine, check whether the machine is properly installed and ready to
connect to the network.
Installation/Settings Problems
If the problem persists even after checking the wireless LAN connection, check the security settings of the wireless
router.
Could not connect using WPS.
When automatic setting with WPS was attempted, the connection failed due to an error.
Wait for a while, and set again. If the problem persists, check whether the wireless router supports WPS.
If WPS is supported:
Check whether the machine is properly installed and ready to connect to the network.
Installation/Settings Problems
If WPS is not supported:
Set using another connecting method.
Connecting to a Wireless LAN
Incorrect number of characters/invalid characters entered.
The network key (the WPA/WPA2-PSK or WEP key) of a wireless router is not entered correctly.
Check the network key (the WPA/WPA2-PSK or WEP key) of the wireless router, and set it to the machine again. For
more information about how to check the network key, see the instruction manuals for your networking devices or
contact your manufacturer.
Checking the SSID and Network Key
Setting Up Connection by Selecting a Wireless Router
Setting Up Connection by Specifying Detailed Settings
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