MFC-L3770CDW
FAQs & Troubleshooting
Vertical white streaks or bands appear on the page
Wipe the windows of all four LED heads with a dry, soft lint-free cloth.> Click here to see how to clean the LED head.
Wipe the scanner glass strip with a dry lint free soft cloth.
Make sure foreign material such as a torn piece of paper, sticky notes, or dust is not inside the machine or around the toner cartridge and drum unit assemblies.
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-L3551CDW, MFC-L3750CDW, MFC-L3770CDW
Content Feedback
To help us improve our support, please provide your feedback below.
Error Messages Paper Feed / Paper Jam Print Scan Copy Telephone Fax Mobile Cloud Others Advanced Functions (for Administrators) Linux Product Setup Driver / Software Network Settings Consumables / Paper / Accessories Cleaning Specification OS Support Information Video FAQs
Settings/Management Function Control Security Enhancement Printer Scanner / Scan Key Tool PC-FAX / Fax-modem Error Message on Machine's Display Error Message on Status Monitor Error Message on Computer Error Message on Mobile Device Paper Jam Paper Feed Problem Paper Loading / Handling Cannot Print (via Network) Cannot Print (via USB / Parallel) Cannot Print (via Mobile Device) Print Quality Problem General Print Problem Print from Computer (Windows) Print from Computer (Macintosh) Print from Mobile Device Print Settings / Management Tips for Printing Cannot Scan (via Network) Cannot Scan (via USB / Parallel) Cannot Scan (via Mobile Device) General Scan Problem Scan from Machine Scan from Mobile Device Scan from Computer (Windows) Scan from Computer (Macintosh) Scan Settings / Management Tips for Scanning Copy Quality Problem Copy Operation Telephone Problem Telephone Operation Telephone Settings 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 Receiving Operation with Computer (PC-Fax) Fax Settings / Management Tips for Fax iOS Device-related Problem Brother iPrint&Scan / Mobile Connect (iOS) AirPrint (iOS) Android™ Device-related Problem Brother iPrint&Scan / Mobile Connect (Android™) Brother iPrint&Scan (Windows Phone Device) Brother Web Connect Google Cloud Print™-related Problem Machine problem Machine Setup / Settings Paper Handling Video FAQs Installing Drivers / Software Updating Drivers / Software / Firmware Uninstalling Drivers / Software Driver / Software Settings Driver / Software tips Consumables Paper Cleaning Product Specification Paper Specification Windows Support Setup Video Troubleshooting Video Tutorial Video
