Finding Information 4-5Troubleshooting4Cannot print with a printer driver other than the Canon FP-L170/MF350/L380/L398.Cause The printer driver is connected to the same port as the Canon FP-L170/MF350/L380/L398 printerdriver.Remedy Connect the printer driver to a port different from the Canon FP-L170/MF350/L380/L398 printerdriver.Cannot install CARPS using the USB port.Cause USB class driver is not properly installed.Remedy Perform the following steps.1. Make sure the printer is connected to your computer using a USB cable and the printer is turnedon.2. For Windows 98/Me/2000, open the [System] dialog box from the [Control Panel]. For WindowsXP, click [Performance and Maintenance] in the [Control Panel] ➞ [See basic information aboutyour computer] in the [Performance and Maintenance] folder. The [System Properties] dialogbox appears.3. For Windows 98/Me, select the [Device Manager] tab sheet ➞ double-click [Universal Serial BusControllers]. For Windows 2000/XP, select the [Hardware] tab sheet ➞ click [Device Manager] ➞double-click [Universal Serial Bus Controllers].4. Locate the USB class driver under [Universal Serial Bus Controllers]. Delete ONLY the USBclass driver specified for you operating system. (If the USB class driver is displayed under [Otherdevice], delete ONLY one of the following, depending on your operating system: [CanonFP-L170/MF350/L380/L398], [Canon CARPS USB Printer], or [Unknown].)For Windows 98, select [Canon FP-L170/MF350/L380/L398] ➞ click [Remove]. For WindowsMe, select [Canon CARPS USB Printer] ➞ click [Delete]. For Windows 2000/XP, select [USBPrinting Support] or [Canon CARPS USB Printer] ➞ uninstall from the [Action] menu.IMPORTANTNever delete other devices or device drivers. Windows may not operate properly.5. Close the [Control Panel] ➞ unplug the USB cable.6. Restart Windows.7. Follow the steps in "Installing Printer Driver through a USB Connection," on p. 2-2.NOTEThe procedure for Windows XP is given for Category Views Mode.Strings of garbled characters are printed.Cause The software is not installed properly.Remedy Check if the printer icon is displayed in the [Printers] (in Windows XP, [Printers and Faxes]) folder. Ifnot, install the software. If the printer icon is displayed, right-click the printer icon ➞ check if [Set asDefault printer] is selected in the pull-down menu. Refer to Chapter 2 for more information.