e007DS-940DW

Brother DS-940DW error E007: Quick fix

The Brother DS-940DW error E007 signals a data communication problem through the USB port, preventing scanning. This code usually manifests when the computer does not recognize the device correctly or when the USB cable presents interference. To fix the E007 error on the Brother DS-940DW, it is crucial to verify the integrity of the cable and the drivers. This compact scanner relies on a stable USB connection to process images quickly.

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Common causes

  • 1Damaged USB cable or bent pin.
  • 2Driver conflict in the operating system.
  • 3Low-power USB hub connected to the scanner.
  • 4Computer USB port disabled or with voltage fault.

Solutions

Diagnostic

If the scanner shows no sign of being connected to the PC while the E007 error blinks, the cause is almost always the data cable.

Step-by-Step Solution

  1. Disconnect the USB cable and try connecting it to another port on your computer (preferably the rear one if it is a desktop).
  2. Attempt to use a different USB 3.0 cable to rule out damage to the original cable.
  3. Uninstall and reinstall the drivers (iPrint&Scan) from the official support website.
  4. Restart the scanner and the PC after completing the reinstallation.

Prevention and Maintenance

Avoid using generic USB extension cables. Perform regular firmware updates using the official Brother utility.

When to call a technician

If the E007 error persists after testing on other equipment (PC/Laptop), the internal USB port of the scanner might have physical damage.

Technical Specifications

  • Technology: Contact Image Sensor
  • Speed: 15 ppm
  • Connectivity: USB 3.0, Wi-Fi
  • Capacity: Single sheet (auto-feed)
  • Consumable: Original roller kit
  • Recommended Use: Mobile and office
  • Official drivers / firmware

Steps to follow

  1. 1

    Change cable

    Try with another certified USB 3.0 cable.

  2. 2

    Change port

    Connect the scanner to another computer port.

  3. 3

    Driver

    Reinstall the official Brother driver.

Frequently asked questions

The E007 indicates that the device cannot establish a stable USB communication with the computer.

Not necessarily; it is usually a cable or controller failure that has a simple solution.

Use original Brother rollers to ensure performance.

Avoid using generic USB hubs; connect the scanner directly to the PC's rear port.