Troubleshooting
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 LPT1:(ECP Printer Port) is displayed in the Print to the following port
field, the parallel port is selected. If USBPRNnn (Canon S750) or USBnnn (Canon
S750) ("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.
If the printer is connected to the USB interface, follow the procedure "Notes on Handling
the USB Interface (for Windows Users)" in the printed Quick Start Guide.
An Error Message is Displayed on the Screen
Opening the Printer Properties dialog box directly from the Start
menu
Uninstalling Printer Drivers
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