Canon S820 User Manual page 168

Note
• Some computers may have problems printing in the ECP mode.
In this case, clear the Set printer to ECP mode check box in the screen
above, and click Send. Turn the printer off and back on to cancel the ECP
mode.
• With Windows 95, a problem may remain after you cancel the ECP mode
setting. See also "Unable to Print from the Canon BJ Printer Port" in the
on-line Help.
Appendices
For Faster Printing 168