Canon LBP251dw User Manual page 370

● Match the paper size setting specified in <Paper Settings> and the size of the paper that is actually loaded.
To use the loaded paper
Change the setting of <Paper Settings> to match the loaded paper size.
Specifying Paper Size and Type(P. 50)
If printing from a computer, check whether the paper size setting in the printer driver matches the loaded
paper size.
To load paper without changing the settings
Load the paper with the size that is set to <Paper Settings>.
Loading Paper(P. 35)
● Check that the paper guides in the paper drawer are set in the correct position.
Loading Paper(P. 35)
The authentication server certificate has expired.
The server certificate sent from the RADIUS server has expired.
● Check the valid period of the server certificate on the RADIUS server.
Configuring IEEE 802.1X Authentication(P. 248)
The authentication server certificate is incorrect.
There is no CA certificate registered in the printer that is compatible
with the authentication server certificate.
● Check that there is a CA certificate registered in the printer that is compatible with the authentication
server certificate.
Configuring IEEE 802.1X Authentication(P. 248)
The drawer paper guide may not be set to the correct position. Adjust the
guide to the size of the loaded paper.
The paper guides in the paper drawer are not set correctly.
● Set the paper guides in the paper drawer correctly.
Loading Paper in the Paper Drawer(P. 37)
The WEP key is not set correctly. Check the WEP settings.
The network key (the WEP key) of a wireless router to be connected is not set to the machine correctly.
● Check the network key (the WEP key) of the wireless router, and set it to the machine again.
Checking the SSID and Network Key(P. 150)
Setting Up Connection by Selecting a Wireless Router(P. 143)
Setting Up Connection by Specifying Detailed Settings(P. 146)
Troubleshooting
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