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Problem Solver

Correcting USB Problems

Printer does not work correctly with the USB cable
Operating system
Printer software installation
USB driver installation
The Device Manager menu (for Windows Me and 98)

If you are having difficulty using your printer with a USB connection, read the information in this section.

Printer does not work correctly with the USB cable

If your printer does not work correctly with the USB cable, try one or more of these solutions:

Use the USB cable (C83623) recommended in System Requirements.

For best results, you should connect the printer directly to the computer's USB port. If you must use multiple USB hubs, we recommend that you connect the printer to the first tier hub.

For Windows Me and 98, try reinstalling the USB printer device driver and the printer software. First, uninstall EPSON Printer Software using the Add/Remove Programs utility in the Control Panel, then uninstall EPSON USB Printer Devices. Next, reinstall the software as described in Setup Guide. If EPSON USB Printer Devices is not registered in the Add/Remove Programs list, access the CD-ROM and double-click epusbun.exe. in Win9x folder. Then follow the on-screen instructions.

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Operating system

Your computer must be a Windows Me, 98 or Windows 2000 pre-installed model. You may not be able to install or run the USB Printer Driver on a computer which is not equipped with a USB port or which has been upgraded from Windows 95 to Windows 98 or 2000. For Windows Me users, your computer must be a Windows Me pre-install model or upgraded from Windows 98 pre-installed model.

For details about your computer, contact your dealer.

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Printer software installation

Please take notice about the following.

When using Windows 2000, you must follow the steps in the Setup Guide to install the printer software; otherwise, Microsoft's Universal driver may be installed instead. To check if the Universal driver has been installed, open the Printers folder and right-click the icon for your printer. To open the printer driver, click Printing Preferences on the shortcut menu that appears, then right-click anywhere in the driver. If About is displayed in the shortcut menu that appears, click it. A message box with the words "Unidrv Printer Driver" appears. You must reinstall the printer software as described in the Setup Guide. If About is not displayed, the printer software has been installed correctly.

If the Digital Signature Not Found dialog box appears during the installation process, click Yes. If you click No, you must follow the steps in the Setup Guide to install the printer software again.

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USB driver installation

For Windows Me, 98 and 2000 users, follow the directions below to ensure that the USB driver is installed correctly.

Note:

The illustrations used in this section show the procedure for Windows 98.

Click the Start button, point to Settings, and click Printers. Make sure that the icon for your printer appears in the Printers window.

Select the icon for your printer, then click Properties on the File menu.

For Windows Me and 98 users, click the Details tab and make sure that EPUSBx: (EPSON Stylus PHOTO 790) is displayed in the Print to the following port list box. For Windows 2000 users, click the Ports tab and make sure that USBxxx, EPSON Stylus PHOTO 790 is displayed in the Print to the following port(s) list box.

Note:

If the correct port is not displayed, refer to the next section, "The Device Manager menu (for Windows Me and 98)".

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The Device Manager menu (for Windows Me and 98)

If you canceled the plug-and-play driver installation before the procedure was complete, either the USB printer device driver or the printer driver may be incorrectly installed.

Follow the steps below to check the installation and reinstall the drivers.

Turn the printer on. Plug the USB cable into the printer and the computer.

Right-click the My Computer icon on your desktop, then click Properties.

Click the Device Manager tab.

If your drivers are correctly installed, EPSON USB Printer Devices should appear on the Device Manager menu.

If EPSON USB Printer Devices does not appear on the Device Manager menu, click the plus (+) sign beside Other devices to view the installed devices.

If USB Printer appears under Other devices, the USB printer device driver is not installed correctly. If EPSON Stylus PHOTO 790 appears, the printer driver is not installed correctly.

If neither USB Printer nor EPSON Stylus PHOTO 790 appears under Other devices, click Refresh or unplug the USB cable from the printer, then plug it into the printer again.

Under Other devices, select USB Printer or EPSON Stylus PHOTO 790 and click Remove. Then, click OK.

When the following dialog box appears, click OK. Then click OK to close the System Properties dialog box.

Turn off the printer and restart your PC. Then, reinstall the drivers from the beginning, following the instructions in the Setup Guide.

Note:

If the problem persists, contact your dealer.

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