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MFC-L8340CDW

FAQs & Troubleshooting

FAQs & Troubleshooting

Unusable Device

There are two cases when the display shows this message.

 

  • An unsupported USB device has been connected to the USB host connector.
  • A defective USB device or a high power consumption USB device has been connected to the USB direct interface.

Follow the steps below to clear the error message.

Unplug the device from the USB host connector.

 

  • Unplug the device from the USB direct interface.
  • Press and hold Power(Power) to turn off the machine, and then turn it on again.

For more information about the supported USB devices, see the "Specification" section.

 

 

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