Canon MF247dw User Manual page 580

● Have you selected the correct port? If there is no port to use, create a port.
Checking the Printer Port(P. 674)
Configuring Printer Ports(P. 351)
● 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 (P. 401)
IPv4 Address Filter (P. 531)
IPv6 Address Filter (P. 532)
MAC Address Filter (P. 532)
● 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(P. 674)
● Is bidirectional communication enabled? Enable bidirectional communication, and restart the computer.
Checking Bidirectional Communication(P. 675)
● 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
● 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 (P. 570)
● 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(P. 151)
Checking/Deleting Documents in Memory(P. 151)
*
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.
Troubleshooting
572