MFC-8840DN
FAQs & Troubleshooting
Why does my computer become unresponsive when using the USB interface to connect the Brother machine?
When the Brother machine is connected using the USB interface and the computer is not used or idle for a period of time the computer may become unresponsive. This is caused by the "Power Management" feature of your computer. To correct this issue, please set Power Management to OFF in your system BIOS setting.
To change the BIOS setting, please refer to the user's guide or contact the manufacturer of your computer.
If your question was not answered, have you checked other FAQs?
Have you checked the manuals?
If you need further assistance, please contact Brother customer service:
Related Models DCP-110C, DCP-115C, DCP-130C, DCP-135C, DCP-150C, DCP-330C, DCP-350C, DCP-540CN, DCP-7010, FAX-2820, FAX-2850, FAX-2920, MFC-210C, MFC-215C, MFC-240C, MFC-260C, MFC-265C, MFC-3100C, MFC-3220C, MFC-3420C, MFC-410CN, MFC-425CN, MFC-440CN, MFC-465CN, MFC-4800, MFC-5440CN, MFC-5460CN, MFC-5840CN, MFC-5860CN, MFC-620CN, MFC-640CW, MFC-665CW, MFC-685CW, MFC-7220, MFC-7420, MFC-7820N, MFC-8220, MFC-8440, MFC-8840DN, MFC-9180
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Error Messages Paper Feed / Paper Jam Print Scan Copy Telephone Fax Mobile Others Linux Product Setup Driver / Software Network Settings Consumables / Paper / Accessories Specification OS Support Information
Printer Scanner / Scan Key Tool PC-FAX / Fax-modem Error Message on Machine's Display Error Message on Computer Error Message on Mobile Device Paper Feed Problem Cannot Print (via Network) Cannot Print (via USB / Parallel) Cannot Print (via Mobile Device) Print Quality Problem General Print Problem Print from Mobile Device Print Settings / Management Tips for Printing Cannot Scan (via Network) Cannot Scan (via USB / Parallel) Cannot Scan (via Mobile Device) Scan Quality Problem General Scan Problem Scan from Mobile Device Scan from Computer (Windows) Scan from Computer (Macintosh) Scan Settings / Management Tips for Scanning Cannot Copy Copy Quality Problem Copy Operation Telephone Problem Telephone Operation Advanced Networking Wired Network Setting Problem Wireless Network Setting Problem Wired Network Settings Wireless Network Settings Tips for Network Settings Cannot Send a Fax Cannot Receive a Fax Fax Quality Problem General Fax Problem Fax Sending Operation Fax Receiving Operation Fax Sending Operation from Computer (PC-Fax) Fax Settings / Management Android™ Device-related Problem Brother iPrint&Scan / Mobile Connect (Android™) Machine problem Machine Setup / Settings Accessory Installation Installing Drivers / Software Updating Drivers / Software / Firmware Uninstalling Drivers / Software Driver / Software Settings Driver / Software tips Consumables Paper Accessories Product Specification Paper Specification Windows Support Macintosh Support
