Canon LBP7018C E-Manual page 284

Incompatible Printer
<Cause> The connected printer cannot be used.
Solution Connect to the supported printer.
Cannot Communicate with Server
<Cause> The client computer cannot communicate with the print server.
Solution Check the status of the print server and your computer.
Communication Error
<Cause> The USB cable is not connected, or the printer is not turned ON.
Solution 1 Connect the USB cable.
Solution 2 Turn the printer ON.
Network Board Error
<Cause> The LAN cable is not connected to the network adaptor. Alternatively, the network adaptor
and the printer are not turned ON.
Solution 1 Connect the LAN cable to the network adaptor.
Solution 2 Turn ON the printer and the network adaptor.
Cannot Communicate with Printer
<Cause 1> Because the bi-directional communication function is not enabled, the computer cannot
communicate with the printer.
Enable bi-directional communication and restart the computer and printer.
Solution
"Basic Operations/Various Information for Windows"
<Cause 2> The computer cannot communicate with the printer redirected in the terminal connection
environment.
The Firewall settings and so on may be the cause.
Solution
Check the communication settings for the server, clients, and so on.
Incorrect Port
<Cause> The printer is connected to a port which the printer does not support.
Check the port.
Solution
"Basic Operations/Various Information for Windows"