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MFC-9840CDW

FAQs & Troubleshooting

FAQs & Troubleshooting

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Updated:07/15/2025

These are the most viewed FAQs, ranked by popularity.

  1. 1.The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
  2. 2.Duplex (two-sided) scan
  3. 3.I cannot use the Scan to E-mail with Outlook2003 or Outlook2007 after updating ControlCenter3. The error message "command line argument is invalid" appears. What can I do?
  4. 4.The error message "Invalid format for short nick name" appears when printing a document. (Mac OS X 10.5 or greater)
  5. 5.Spots are printed at 75mm.
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MFC-9840CDW

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