Canon LBP7780CX User Manual page 877

The print server is connected to the network properly.
The additional driver (alternate driver) is updated properly.
Printing can be performed from the print server.
<Question 8> Can you print a test page in Windows?
"Basic Operations/Various Information for Windows"
Printable
Not printable
<Question 9> Is the printer on the print server displayed on the network?
"Basic Operations/Various Information for Windows"
Displayed
Not displayed
<Question 10> Install the printer driver again.
For details on the procedure for installing the printer driver, see "Printer Driver Installation Guide."
For details on the procedure for viewing "Printer Driver Installation Guide", see "Installation."
<Question 11> Can another client print?
Printable
Not printable
If printing does not work, proceed to <Question 8>.
There is no problem with the printer and driver.
Check the printing preferences in the application.
To <Question 9>
To <Question 10>
Ask your network administrator about the problem.
If printing does not work, proceed to <Question 11>.
Make resident software invalid including security software.
Contact your local authorized Canon dealer.