Incorrect or incomplete software installation can lead to USB problems. In Windows 7, you should only connect the printer to the computer and power it on when the Epson installation program prompts you to do so. It should not be connected and powered on before installing the software.
Follow the steps below to check that your computer provides USB support:
- Click on the arrow sign next to Universal Serial Bus Controllers.
- Check if the USB Universal Host Controller and the USB Root Hub are identified (that is USB Universal Host Controller listed with a name, e.g. Intel, VIA, SiS, Nvidia, ALi).
Figure 1: The USB Host Controller is identified as 'Intel(R) ICH10 Family' with an individual ID (3A3C):
- If so, then your Windows operating system provides sufficient USB support.
If Universal Serial Bus Controllers is not listed, your system cannot detect the USB controllers and there may be a hardware issue. In the event of this contact your dealer for advice. No further printer-related troubleshooting is necessary at this point.
- If the USB Universal Host Controller and USB Root Hub are not identified (i.e. a manufacturer name is not provided, only 'Generic' or 'Standard'), your USB driver may need to be updated.
An example of this is below - note how a specific name is not given, only 'Standard OpenHCD USB Host Controller':
- In this case try updating the driver in Device Manager. Right-click on the Standard OpenHCD USB Host Controller and left-click on Update Driver. Follow the on-screen instructions, selecting to connect to Windows Update and the Update Driver Wizard should update the driver accordingly.
Repeat this step for any unidentified Host Controllers.
- If there is no change, you could uninstall the USB Host Controllers and USB Root Hubs in Device Manager then restart Windows. This will refresh the driver stack, it is only recommended if all troubleshooting fails and if you can connect your mouse and keyboard via a PS/2 connection instead of a USB connection. Contact Microsoft or your computer vendor for advice.
Device Manager confirms the system provides USB support, but USB was not listed as an available port setting in "Ports":
We recommend that you remove the entry for the Epson device from Device Manager and uninstall the printer software. This will allow you to start the installation again.
Check if Device Manager detects the printer and if there is an error with the device:
If the heading branch is not already expanded (), click the arrow to expand the heading and view the devices below it.
Look under Universal Serial Bus Controllers for USB Printing Support.
- If your USB and your printer drivers are correctly installed, USB Printing Support should appear under Universal Serial Bus Controllers in Device Manager. 'USB Printing Support' represents your printer when it is connected (it doesn't appear when it's not powered on and connected to the computer):
- If USB Printing Support does appear, try selecting a different USB port in the Ports tab of the Printer Properties see Step 12. If there is no change (the printer still does not print), open Device Manager and locate USB Printing Support. Right-click on it then left-click on Uninstall. Close Device Manager then proceed to Step 17 to uninstall and reinstall the printer software.
- If USB Printing Support does not appear under Universal Serial Bus Controllers, the printer software is not correctly installed. Follow the next series of steps:
- Look for any of the following entries under Other Devices:
USB 2.0 Printer
USB 2.0 MFP
Epson Scanner (All-In-Ones only)
Epson printer name (e.g. Epson Stylus SX400)
Figure 1: USB2.0 Printer and Epson Scanner appear under Other Devices:
- If any of these items appear under Other Devices, this confirms that the printer software is not installed correctly. For any devices listed as above, except USB 2.0 MFP, proceed to Step 6 in this section.
If USB 2.0 MFP appears, do not move to the next step; this error is displayed because your installation of Windows does not have a generic Windows system file already installed. The USB2.0 MFP (High Speed) device needs to be installed using a generic Windows driver file USBCCGP.sys. Contact Microsoft for help on installing the generic Windows driver file, Microsoft should then be able to obtain and install the USB Composite driver required by the unit and allow you to continue the installation of the other functions of the unit, such as the USB Printing Support and USB Mass Storage Device.
- If none of these items appear under Other Devices, the printer may not be detected by the computer.
Click on Action from the top of the window then click on Scan for hardware changes. Alternatively, unplug the USB cable from the printer then plug it into the printer again:
Once you have confirmed that these items appear, proceed to Step 6 in this section.
- If these items do not appear, check whether Unknown Device is listed under Other Devices or Universal Serial Bus Controllers.
- If Unknown Device is not listed, check for USB Printing Support. If this is listed, your device should now have been installed so try printing a Windows Test Page. For instructions see How to print a test page in Windows.
- If Unknown Device is listed, the device may not be getting enough power from the USB Controllers. Check the following items:
- Ensure that the device is connected directly to the computer. If it is USB device is connected to a USB port on a keyboard, hub, or other similar device, unplug it and plug it into a USB port on the computer.
- The device may not be getting enough power. If other USB devices are connected to the system, remove all other USB devices (except the keyboard and mouse) and try a different available USB port. If this solves the issue, you could try using a powered USB hub in future to power other devices.
- If the device does not appear with the device name or USB Printer or USB MFP, click on Action then click on Scan for hardware changes. Alternatively, unplug the USB cable from the printer, then plug it into the printer again.
- If the Unknown Device reappears, right-click on it then left-click on Uninstall. A prompt stating 'Warning you are about to uninstall this device.....' will appear, click OK then close Device Manager. Proceed to Step 17 to uninstall the software.
- If Unknown Device does not reappear but another listing appears on the menu, check the name and where it appears. You may need to refer to the above guidance in this step.
- If none of these items appear, the printer is not detected. Unplug all other USB devices (except USB keyboard or mouse) and connect only your USB printer.
- Click on the arrow beside Universal Serial Bus Controllers.
- Check under Universal Serial Bus Controllers for USB Printer, USB 2.0 Printer, USB MFP, or USB 2.0 MFP.
- If any of these items are listed, click on Action then click on Scan for hardware changes. Alternatively, unplug the USB cable from the printer, then plug it into the printer again. If the entry reappears with an error, move to Step 6 in this section.
- If the entry does not reappear, but USB Printing Support appears, the device has now been installed - try printing a Windows Test Page. For instructions see How to print a test page in Windows.
- If your Epson device is still not detected i.e. none of the above-mentioned entries appear under Other Devices or Universal Serial Bus Controllers, there may be a problem with your computer.
- Try a different USB port and failing this, a different USB cable. The USB cable should be Revision 1.1 or 2.0 compliant and no longer than 1.8 metres.
- Microsoft also recommend the following:
Double-click the USB Root Hub, click the Power tab, and then click Power Properties (if it is shown). The available ports and power usage is shown. If the displayed power is over 500mA, remove the devices and use a powered hub. To check the properties of a hub, double-click HUB and the hub information window opens.
- If your Epson product still does not appear, try connecting it to a different computer. Alternatively, contact Microsoft or your PC vendor for support.
- Check the entries for the following Device Manager Error symbols:
||If a question mark appears over an identified device, there is an error with the driver installation or the driver may need to be updated.
||For an Epson device, you can update the driver; right-click on the entry and left-click on Update Driver. Should the entry not refer to the Epson product, contact your vendor for support.
This will open the Update Driver Wizard. Follow the on-screen prompts, allowing Windows to connect to Windows Updates for that time. If the wizard fails to update the driver and the erroneous entry is still listed, proceed to Step 7 in this section.
||If a black arrow is over a device icon, the device has been disabled.
||Right-click on the device entry and left-click on Enable. If there are any other error symbols over the device icon, check the guidance in this section.
||If an Exclamation Mark is over a device icon, there is an error with the driver or a suitable driver could not be found (and not installed).
||Proceed to Step 7 in this section.
Should the entry not refer to the Epson product, contact your vendor for support - you will need to update or reinstall the device's driver.
- For an Epson device, right-click on the device entry for your printer (e.g. USB Printer, USB MFP) and left-click Uninstall.
A Confirm Device Removal prompt will appear. Click OK then close Device Manager. You will need to uninstall the software - move to Step 17 for instructions.