When an Error Message Appears
When you encounter an operation problem such as when a print processing error occurs or the memory becomes full, a message appears on the screen. Find out more information about messages in the following list.
Cannot analyze the authentication server certificate.
The authentication server certificate may be invalid, or the certificate may be in a format that the printer does not support.
Check the authentication server certificate.
Cannot find the access point.
When automatic setting with WPS was attempted, a wireless router could not be detected within a specific period of time.
Connect again paying attention to the time limit.
An SSID or network key of a wireless router was entered manually, but the entry was incorrect.
Check the SSID and network key, and enter the correct ones again.
A wireless router could not be detected due to setting problems of the network to be connected.
Check whether the machine is properly installed and ready to connect to the network.
If the problem persists, check the security settings of the wireless router.
Cannot use Google Cloud Print. Server authentication failed.
Server authentication for Cloud Print failed. Or, acquisition of information for registration failed.
Check whether the date and time settings are correctly specified.
Cannot use Google Cloud Print. Server communication error.
Cloud Print is unavailable due to an error.
Check whether the machine is correctly connected to a wireless LAN or wired LAN.
A port that is used for Cloud Print may be blocked by a firewall or other protection. Check whether the 5222 port is available with your computer.
If a proxy server is used on the network, check whether the proxy settings on the machine and the server are correct. For details, contact your Network Administrator.
Cart. communication error. Use of non-Canon cartridges is not covered by the warranty. Amount remaining in the cartridge cannot be displayed correctly.
A toner cartridge may not be installed correctly or may be faulty.
Re-install the toner cartridge. If re-installing the toner cartridge fails to clear the error message, the toner cartridge may be faulty. Contact the store where you purchased the toner cartridge or consult the Canon Customer Help Center.
The toner cartridge used may not be a genuine Canon product.
Only genuine Canon toner cartridges should be used as replacement toner cartridges.
Cartridge has reached end of lifetime. Rplcmt. recommended.
The toner cartridge has reached the end of its lifetime.
Replacement of the toner cartridge is recommended.
Change the authentication password.
The password has expired.
Set a new password.
Check the authentication settings.
The authentication method set on the machine does not match the authentication method set on the RADIUS server.
Check that the same authentication method is set on this machine and the RADIUS server, and set the correct authentication method.
Connection failed. Check the PSK settings.
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.
If the problem persists even after checking the network key, check whether the machine is properly installed and ready to connect to the network.
Could not connect using Access Point Mode.
Connection in Access Point Mode failed due to an error.
Wait a few moments and try again. If you still cannot connect, try switching the machine off briefly.
Could not connect using the wireless LAN.
Wireless LAN communication failed due to an error.
Wait for a while, and set again. If you still cannot get connection, turn OFF the machine and then restart it.
Could not connect using the wireless LAN. Turn the main power OFF and ON, then configure the settings again.
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.
If the problem persists even after checking the wireless LAN connection, check the security settings of the wireless router.
Could not connect using WPS. Wait a moment, then configure the settings again.
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.
If WPS is not supported:
Set using another connecting method.
Could not connect. The maximum number of devices that can connect to the access point has been reached.
You tried to connect to a wireless LAN router to which the maximum possible number of devices are already connected.
Decrease the number of devices connected to the wireless LAN router (the number of clients). For the maximum number of devices that can be connected to a wireless LAN router, see the instruction manual for the router or contact the manufacturer of the router.
Could not detect any connections from wireless devices.
It was not possible to detect any mobile device within the predetermined length of time.
Connect again paying attention to the time limit. Make Direct Connection (Access Point Mode)
Could not perform cleaning.
Paper jammed during cleaning.
Remove the jammed paper, set paper correctly, and perform cleaning again.
The amount remaining in toner cartridge required for cleaning the fixing unit is insufficient.
Cleaning requires sufficient toner cartridge remaining. Replace the toner cartridge, and perform the cleaning again.
Could not perform Open System authentication. Check the WEP settings.
The authentication method of the machine is set to <Open System>, but that of a wireless router is set to "Shared Key."
Connect again by manually changing the WEP authentication method to <Shared Key>.
The MAC address of the machine is rejected because the MAC address filter is set at a wireless router.
Set the wireless router to permit the MAC address of the machine and your computer. For more information about how to set, see the instruction manuals for your networking devices or contact your manufacturer. To check the MAC address of the machine, tap <Menu> 
<Network Settings> <Wireless LAN Settings> <Connection Information>.
<Network Settings> <Wireless LAN Settings> <Connection Information>.Could not perform Shared Key authentication. 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.
Connect again by selecting a wireless router or by manually changing the WEP authentication method to <Open System>.
The authentication method of the machine is set to <Shared Key>, but that of the wireless router is set to "Open System."
Change the WEP authentication method to "Shared Key" at the wireless router, and connect again. For more information about how to change, see the instruction manuals for your networking devices or contact your manufacturer.
Direct Connection terminated.
Connection between the machine and the mobile device was terminated.
Reestablish Direct Connection.
Insert the toner cartridge.
The toner cartridge is not set or properly set.
Properly set the toner cartridge.
Memory full. Check error info. using the Status Monitor key.
The memory became full of print data that could not be printed due to errors.
For the documents with errors, select <Skip Error> or cancel printing of those documents.
Memory Media Print is restricted.
The function that prints files in a USB memory device is disabled.
Set <Memory Media Print On/Off> to <On>.
No Paper
Paper is not loaded in the paper drawer or the multi-purpose tray.
Load the paper.
Paper on which reports or lists can be printed is not loaded.
Reports or lists can be printed on A4 or Letter size paper. Load A4 or Letter size paper and set its size. Also, set the paper type to <Plain>, <Plain L>, <Recycled>, <Color>, or <Heavy 1> depending on the loaded paper.
No reply from the destination.
A network cable may be disconnected, or there may be a problem in a switch.
Check the status of the network cables and switches.
No response from the host.
The machine is not connected to a network correctly.
Check the status of the network cables and switches.
Paper jammed.
Paper jams.
Remove the jammed paper, and print again (Printing may resume automatically).
Paper Size & Settings Mismatch
The paper size setting on the operation panel does not match the loaded paper size.
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.
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>.
Check that the paper guides in the paper drawer are set in the correct position.
Prepare a cartridge.
The toner cartridge needs to be replaced soon.
Shake the toner cartridge to evenly distribute the toner inside the toner cartridge. It is recommended to replace the toner cartridge when printing a large volume of documents.
Printing is restricted.
Printing is disabled in the Department ID Management.
Log on with a Department ID for which printing is not disabled. For the Department ID and PIN, contact your Administrator.
Set the correct authentication information.
The client authentication information (key pair and certificate, user name and password, or CA certificate) is not set correctly.
Check the specified authentication method and authentication information (key pair and certificate, user name and password, and CA certificate).
Set the information necessary for authentication.
The IEEE 802.1X authentication has not been configured correctly.
Configure the IEEE 802.1X correctly from the Remote UI.
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.
The authentication server certificate is incorrect.
There is no CA certificate registered in the printer that is compatible
with the authentication server certificate.
with the authentication server certificate.
Check that there is a CA certificate registered in the printer that is compatible with the authentication server certificate.
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.
The image cannot be recognized.
The image you selected could not be previewed when you were selecting files to print in a USB memory device.
Images with the "?" icon cannot be previewed. JPEG or TIFF images can be previewed, but some of the images may not be able to be displayed.
The memory is full. Process secure print jobs.
Memory became full of secured documents that were not printed.
Print the secured documents that are stored in memory.
The number of entered characters is incorrect or invalid characters are used.
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.
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.
The authentication method of the machine is set to <Shared Key>, but that of the wireless router is set to "Open System."
Connect again by selecting a wireless router or by manually changing the WEP authentication method to <Open System>.
Change the WEP authentication method to "Shared Key" at the wireless router, and connect again. For more information about how to change, see the instruction manuals for your networking devices or contact your manufacturer.
Use of non-Canon cartridges is not covered by the warranty. The amount remaining in the cartridge cannot be displayed correctly.
The toner cartridge used may not be a genuine Canon product.
Only genuine Canon toner cartridges should be used as replacement toner cartridges.
Use Remote UI to set the information necessary for authentication.
The IEEE 802.1X settings are incorrect.
Check whether [Login Name] is set correctly.
Check whether the [Use TLS], [Use TTLS], or [Use PEAP] check box is selected.
If using TLS, check whether a key pair is registered.
If using TTLS or PEAP, check whether a user name and password are set correctly.