Canon BJC-S820D User Manual page 167

Ensure that the printer port setting corresponds to the printer interface
connection.
Open the Printer Properties dialog box from the Start menu, and click the Details tab (or
Ports tab). If USBPRNnn (Canon S820D) or USBnnn (Canon S820D) ("n" represents
a number) is displayed, the USB port is selected.
If the setting is incorrect, shut down Windows, turn off the printer and either connect the
printer to the interface selected in the printer driver, or install the correct printer driver
corresponding to the interface.
There may be a problem in the printer driver. Uninstall the printer driver and
reinstall it.
Also refer to the procedure "Notes on Handling the USB Interface (for Windows Users)"
in the Quick Start Guide .
Opening the Printer Properties dialog box directly from the Start
menu
Uninstalling Printer Drivers
An Error Message is Displayed on the Screen
Troubleshooting
167