Copy/Printing Problems

Printing/copy results are not satisfactory. Paper creases or curls. When You Cannot Print Properly

You cannot print.

Can you print a Windows test page? If you can print a Windows test page, there is no problem with the machine or the printer driver. Check the print settings of your application.
Printing a Test Page in Windows

If you cannot print a test page, check the following according to your environment.

Wireless LAN connection (MF249dw / MF237w)

Check the connection status (signal strength) of the wireless LAN.
Viewing Network Settings

If the connection is poor, try the following.

Change the channel of your wireless LAN router. If you have more than one router, set the channels to be at least five channels apart.

If you can change the radio output power of your wireless LAN router, raise the output power.

If your computer is connected to a wireless LAN, are the computer and this machine using the same wireless LAN router SSID? If they are different, reset the wireless LAN connection settings of this machine.
Viewing Network Settings
Checking the SSID to Which Your Computer Is Connected
Connecting to a Wireless LAN (MF249dw / MF237w)

When you reset wireless LAN connection settings

As the wireless LAN router, select the one with the SSID to which the computer is connected.

Have you selected the correct port? If there is no port to use, create a port.
Checking the Printer Port
Configuring Printer Ports

Is communication not limited by the firewall on your computer? If IP addresses are incorrectly entered, you will be not able to access the machine. In that case, you need to use the operation panel to set <IPv4 Address Filter> or <IPv6 Address Filter> to <Off>.
Restricting Communication by Using Firewalls (MF249dw / MF246dn / MF237w)
IPv4 Address Filter
IPv6 Address Filter

Disable security software and other resident software.

Reinstall the printer driver in accordance with the MF Driver Installation Guide.

Can you print from other computers on the network? If you also cannot print from other computers, contact your local authorized Canon dealer or the Canon help line.

Wired LAN connection (MF249dw / MF246dn / MF237w)

Have you selected the correct port? If there is no port to use, create a port.
Checking the Printer Port
Configuring Printer Ports

Is communication not limited by the firewall on your computer? If IP addresses are or an MAC address is incorrectly entered, you will be not able to access the machine. In that case, you need to use the operation panel to set <IPv4 Address Filter>, <IPv6 Address Filter>, or <MAC Address Filter> to <Off>.
Restricting Communication by Using Firewalls (MF249dw / MF246dn / MF237w)
IPv4 Address Filter
IPv6 Address Filter
MAC Address Filter

Disable security software and other resident software.

Reinstall the printer driver in accordance with the MF Driver Installation Guide.

Can you print from other computers on the network? If you also cannot print from other computers, contact your local authorized Canon dealer or the Canon help line.

USB connection

Have you selected the correct port? If there is no port to use or you are not sure, reinstall the printer driver in accordance with the MF Driver Installation Guide. When you reinstall the printer driver, the correct port is created automatically.
Checking the Printer Port

Is bidirectional communication enabled? Enable bidirectional communication, and restart the computer.
Checking Bidirectional Communication

Disable security software and other resident software.

Connect to another USB port on the computer.

Can you print from a USB connection to another computer? If you also cannot print from other computers, contact your local authorized Canon dealer or the Canon help line.

Via print server (MF249dw / MF246dn / MF237w)

Can you print from the print server? If you can print from the print server, check the connection between the print server and your computer.
Problem with the Print Server (MF249dw / MF246dn / MF237w)

Disable security software and other resident software.

Reinstall the printer driver in accordance with the MF Driver Installation Guide.

Can you print from other computers via the print server? If you also cannot print from other computers, contact your local authorized Canon dealer or the Canon help line.

Printing seems to be slow.*

Print or delete data in memory.
Printing Documents in Memory
Checking/Deleting Documents in Memory

* When the free space in memory is running low, the processing speed of the machine becomes slow, just as a computer does. There is nothing abnormal.

You cannot print with Google Cloud Print. Using Google Cloud Print

It takes a long time before printing starts.

Did you print to narrow width paper? After you print to narrow width paper, the machine may cool itself to maintain the print quality. As a result, it may take some time before the next job is printed. Wait until the machine is ready to print. Printing will resume when the temperature inside the machine has fallen.

A blank sheet is output (nothing is printed).

Did you pull the sealing tape out when loading the toner cartridge? If you did not pull it out, remove the toner cartridge, pull the sealing tape out, and reload the toner cartridge.
How to Replace Toner Cartridges