Canon imageCLASS MF275dw Wireless All-In-One Monochrome Laser Printer - Manual (Page 575)

Could not perform cleaning.
Cleaning could not be performed due to jammed paper, loading of incorrect paper, or another problem.
Is Paper Loaded?
Load paper in the paper drawer if not loaded. Loading Paper in the Paper Drawer(P. 134)
Is Paper Jammed?
If so, remove any jammed paper. Paper Jams(P. 487)
Could not perform IEEE 802.1X authentication. Cannot analyze the
authentication server certificate.
The certificate of the authentication server may not be correct, or it may be a format unsupported by the machine.
Check the certificate of the authentication server, and change the setting, as needed.
Check the Certificate of the RADIUS Server, and Change the Setting, as Needed.
Setting IEEE 802.1X(P. 313)
Could not perform IEEE 802.1X authentication. Change the authentication
password.
The password has expired.
Set a New Password.
Setting IEEE 802.1X(P. 313)
Could not perform IEEE 802.1X authentication. Check the authentication
settings.
The authentication method set on the machine does not match that set on the RADIUS server.
Check the Authentication Method Set on the RADIUS Server, and Set This Correctly.
Setting IEEE 802.1X(P. 313)
Could not perform IEEE 802.1X authentication. Configure the correct
authentication information.
The authentication method or authentication information of IEEE 802.1X is not set correctly.
Set the Authentication Method and Authentication Information (Keys and Certificates, Password, CA
Certificate) Correctly.
Setting IEEE 802.1X(P. 313)
Managing and Verifying a Key and Certificate(P. 315)
Could not perform IEEE 802.1X authentication. Configure the information
required for authentication.
The authentication method or authentication information of IEEE 802.1X is not set correctly.
Set the Authentication Method and Authentication Information (Keys and Certificates, Password, CA
Certificate) Correctly.
Troubleshooting
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