The Brother MFC-L3770CDW is a versatile color laser all-in-one printer, offering print, copy, scan, and fax functionalities.
Brother provides FREE technical support throughout the product’s lifespan, ensuring an exceptional user experience. Download drivers and manuals at brother-usa.com.
Overview of the MFC-L3770CDW
The Brother MFC-L3770CDW stands as an entry-level, yet remarkably capable, color laser all-in-one printer. Designed specifically for the demands of small and home-based offices, or compact workgroups, it seamlessly integrates printing, copying, scanning, and faxing into a single, efficient device. This model prioritizes user-friendliness, featuring a responsive touchscreen interface for intuitive navigation and control.
Brother emphasizes comprehensive support, offering free technical assistance for the entire product lifecycle – accessible online, via phone, or through live chat. Users can readily find the latest drivers, software, and detailed product manuals at brother-usa.com, ensuring a smooth and productive experience. The MFC-L3770CDW aims to deliver reliable performance and convenience.
Key Features and Benefits
The MFC-L3770CDW boasts a rich feature set, including high-quality color printing, copying, scanning, and fax capabilities. Its touchscreen interface simplifies operation, while built-in wireless connectivity offers flexible placement options. Benefit from automatic two-sided printing (duplex) to conserve paper and reduce costs.
Brother’s commitment to support is a key advantage, providing free technical assistance throughout the product’s life. Access to online FAQs, a comprehensive knowledge base, and downloadable resources at brother-usa.com empowers users. This printer delivers a balance of functionality, affordability, and reliable performance, making it ideal for small office environments.
Intended Use: Small Office/Home Office
The Brother MFC-L3770CDW is specifically designed for the demands of small and home offices, or workgroups with light to moderate printing needs. Its compact footprint fits comfortably in limited spaces, while its all-in-one functionality eliminates the need for multiple devices.
This printer excels at handling everyday tasks like document creation, report generation, and occasional color printing. It’s a cost-effective solution for businesses seeking a reliable and versatile device. The MFC-L3770CDW provides essential features without unnecessary complexity, streamlining workflow and boosting productivity in smaller environments.

Setting Up Your Printer
Initial setup involves unboxing, connecting the power and network, and installing the necessary drivers and software for optimal performance.
Unboxing and Initial Inspection
Carefully unpack your Brother MFC-L3770CDW, ensuring all packing materials are removed from both inside and outside the printer. Inspect the printer for any visible damage that may have occurred during shipping. This includes checking the exterior casing, the touchscreen display, and the paper tray.
Verify the contents against the included packing list. You should find the printer itself, a power cord, a phone line (for fax functionality), and a starter toner cartridge. Also, locate the Quick Setup Guide and the full product documentation – often a reference guide in PDF format. Retain the packaging for potential future transport or warranty claims. If any items are missing or damaged, immediately contact Brother Customer Support.
Connecting Power and Network
Connect the power cord to the printer and a grounded electrical outlet. Avoid using extension cords or power strips if possible. For network connectivity, the MFC-L3770CDW offers both wired (Ethernet) and wireless (Wi-Fi) options. For Wi-Fi, access the printer’s touchscreen menu to locate and connect to your wireless network – you’ll need your network name (SSID) and password.
Alternatively, use the Ethernet cable to connect directly to your router. The printer will typically obtain an IP address automatically via DHCP. Confirm a successful connection through the printer’s network configuration settings displayed on the touchscreen. Ensure your computer and printer are on the same network for seamless communication.
Installing Drivers and Software
To install the necessary drivers and software, visit the official Brother support website at brother-usa.com. Locate your MFC-L3770CDW model and download the “Full Driver & Software Package” compatible with your operating system (Windows or macOS). Run the downloaded file and follow the on-screen instructions. The installation wizard will guide you through the process, including selecting your connection method (USB or Network).
During installation, you may be prompted to register your printer. This is recommended for accessing support and updates. After installation, restart your computer to ensure all components are loaded correctly. The Brother iPrint&Scan app is also available for mobile printing.

Understanding the Control Panel
The MFC-L3770CDW features an intuitive touchscreen interface for easy navigation. Access menus, settings, and functions directly from the color display panel.
Touchscreen Interface Overview
The Brother MFC-L3770CDW boasts a responsive color touchscreen that serves as the central hub for controlling printer functions. This intuitive interface simplifies navigation, allowing users to quickly access features like printing, copying, scanning, and faxing. The display presents clear icons and prompts, guiding you through each process.
The touchscreen dynamically adjusts based on the selected function, presenting relevant options and settings. You can easily customize settings, monitor printer status, and troubleshoot issues directly from the panel. The Reference Guide provides detailed explanations of each icon and menu option, ensuring a smooth and efficient user experience. Familiarizing yourself with the touchscreen layout will significantly enhance your productivity.
Navigating the Menu System
The MFC-L3770CDW’s touchscreen menu system is logically organized for easy access to all printer functions. From the home screen, swipe or tap to navigate between main categories: Print, Copy, Scan, Fax, and Setup. Within each category, further submenus reveal specific settings and options.
Use the on-screen keyboard for text input, and the back/cancel buttons to return to previous screens. The Reference Guide details each menu item, explaining its purpose and available adjustments. Explore the ‘Setup’ menu to configure network settings, paper handling, and security features. Consistent use of the menu will unlock the printer’s full potential, allowing for customized operation tailored to your needs.
Key Icons and Their Functions
The Brother MFC-L3770CDW’s touchscreen interface utilizes intuitive icons for quick function access. The ‘Home’ icon returns you to the main menu, while the ‘Stop’ icon immediately halts current operations. A paper stack icon indicates paper-related settings, and a toner cartridge icon leads to supply status and replacement options.
The ‘Scan’ icon initiates scanning procedures, and the ‘Fax’ icon accesses fax functionalities. A wrench icon represents the ‘Setup’ menu, offering configuration options. Refer to the Reference Guide for a comprehensive visual glossary of all icons and their corresponding functions. Understanding these icons streamlines navigation and enhances operational efficiency.

Printing Functions
The MFC-L3770CDW supports basic printing from computers (Windows & macOS) and mobile devices via Brother iPrint&Scan, offering versatile printing options.
Basic Printing Procedures
Initiating a print job with the Brother MFC-L3770CDW is straightforward. Ensure the printer is powered on and connected to your computer, either via USB or network. Open the document you wish to print from your application. Select “Print” from the File menu, and choose the MFC-L3770CDW from the list of available printers.
Adjust print settings like paper size, orientation, and print quality within the print dialog box. Confirm your selections and click “Print” to begin. The printer will automatically pull paper and commence printing. Monitor the printer’s display for status updates. For mobile printing, utilize the Brother iPrint&Scan app, selecting your document and the MFC-L3770CDW as the destination.
Printing from Computers (Windows & macOS)
For Windows users, after installing the drivers, printing is typically initiated through the application’s “Print” function. Select the Brother MFC-L3770CDW from the printer list and configure settings like paper size and print quality. Preview your document before finalizing. On macOS, open the document, choose “Print,” and select the printer. Adjust settings in the print dialog box, ensuring correct paper handling options.
Driver updates are crucial for optimal performance; download the latest versions from brother-usa.com. Both operating systems support standard printing features. Ensure your computer and printer are on the same network for wireless printing to function correctly.
Mobile Printing Options (Brother iPrint&Scan)
Brother iPrint&Scan enables convenient printing and scanning directly from your iOS or Android devices; Download the app from your respective app store and connect to the MFC-L3770CDW via Wi-Fi. You can print documents, photos, and web pages directly from your mobile device.
Scanning functionality allows you to save documents as PDF files directly to your phone or tablet. The app offers basic settings adjustments for print quality and paper size. Ensure your printer and mobile device are connected to the same wireless network for seamless operation. Visit brother-usa.com for app support.

Copying Functions
The MFC-L3770CDW offers standard copying modes, alongside advanced features like reduction and enlargement. Utilize two-sided copying (duplex) for efficient document handling.
Standard Copying Modes
The Brother MFC-L3770CDW provides several standard copying modes to suit various document needs. Users can quickly produce copies using the default settings, ideal for everyday tasks. A key feature is the ability to select the desired copy quantity before initiating the process, ranging from a single copy to multiple sets.
The printer automatically adjusts settings for optimal clarity, ensuring consistent results. Furthermore, users can choose between different paper sizes supported by the device, including standard letter and legal formats. The standard mode prioritizes speed and efficiency, making it perfect for high-volume copying jobs where advanced customization isn’t required. This straightforward approach simplifies the copying process, delivering reliable performance with minimal user intervention.
Advanced Copying Features (Reduction/Enlargement)
The MFC-L3770CDW offers advanced copying features, notably reduction and enlargement, providing flexibility for diverse document requirements. Users can precisely adjust the copy size, reducing documents to fit on fewer pages or enlarging them for improved readability. This functionality is easily accessible through the touchscreen interface, allowing for quick adjustments.
Reduction options typically range from 25% to 75%, while enlargement options extend up to 200%. These settings are ideal for adapting documents to specific presentation needs or conserving paper. The printer maintains image quality during these adjustments, ensuring clear and legible copies. Previewing the adjusted copy before finalizing is also possible, guaranteeing satisfactory results. These features enhance the printer’s versatility beyond standard copying.
Two-Sided Copying (Duplex)
The Brother MFC-L3770CDW supports convenient two-sided copying, also known as duplex copying, significantly reducing paper consumption and streamlining workflow. This feature automatically prints on both sides of the paper, creating a booklet-style copy without manual intervention. Activation is straightforward via the touchscreen control panel, offering options for both long-edge and short-edge binding.
Duplex copying is an environmentally conscious and cost-effective solution for producing reports, documents, and presentations. The printer handles the automatic paper flipping efficiently, ensuring consistent and professional results. Users can preview the duplex copy before finalizing, verifying the layout and content. This feature enhances productivity and minimizes waste, making it a valuable asset for any office environment.

Scanning Functions
The MFC-L3770CDW offers versatile scanning capabilities, allowing you to scan documents directly to your computer, email, or a USB flash drive easily.
Scanning to Computer
Scanning to your computer with the Brother MFC-L3770CDW is a straightforward process. First, ensure your computer and printer are connected via network or USB. Utilize the printer’s touchscreen to select the “Scan” function. Then, choose “Computer” as your destination.
You’ll be prompted to select your desired scan settings, including resolution, file type (like PDF or JPEG), and color mode. The Brother software, downloadable from brother-usa.com, provides advanced options for image enhancement and file management.
Once configured, initiate the scan. Your scanned document will be saved directly to your computer’s designated folder. Regularly updating the printer drivers ensures optimal scanning performance and compatibility.
Scanning to Email
Scanning directly to email with the Brother MFC-L3770CDW simplifies document sharing; From the printer’s touchscreen, select the “Scan” function, then choose “Email” as your destination. You’ll need to pre-configure your email settings through the printer’s control panel or the Brother software available on brother-usa.com.
This involves entering your email server details, username, and password. Once configured, select the recipient’s email address from your address book (if saved) or manually enter it. Adjust scan settings like resolution and file format as needed.
Initiate the scan, and the MFC-L3770CDW will automatically send the scanned document as an email attachment.
Scanning to USB Drive
Scanning to a USB drive offers a convenient, portable way to transfer documents. Insert a USB flash drive into the designated USB port on the Brother MFC-L3770CDW. From the printer’s touchscreen, select the “Scan” function, then choose “USB” as your destination. The printer will recognize the connected drive.
You can then select the file format (PDF, JPEG, etc.) and resolution for your scan. Initiate the scan, and the scanned document will be saved directly onto the USB drive.
Ensure the USB drive has sufficient storage space before scanning. This method is ideal for situations where direct computer access isn’t available.

Fax Functions
The MFC-L3770CDW supports sending and receiving faxes directly from the control panel. Configure fax settings for optimal performance and reliable document transmission.
Sending a Fax
To send a fax using your Brother MFC-L3770CDW, begin by ensuring the document is loaded correctly in the automatic document feeder or placed face down on the scanner glass. Navigate to the Fax menu on the touchscreen interface and select the “Send Fax” option.
Enter the recipient’s fax number directly using the keypad, or select a frequently used number from your fax address book. You can also preview the document before sending to confirm accuracy.
Adjust transmission settings as needed, such as resolution and speed. Finally, press the “Start” button to initiate the fax transmission process. The printer will confirm successful delivery upon completion.
Receiving a Fax
The Brother MFC-L3770CDW can receive faxes in several ways. Ensure the fax line is properly connected and active. The printer can be set to automatically receive faxes, or you can manually initiate reception through the Fax menu on the touchscreen.
When a fax is received automatically, it will be stored in the printer’s memory or printed directly, depending on your settings. You can access received faxes through the fax history log on the control panel.
Configure settings like ring count and auto answer to customize the fax reception process. Regularly check the fax memory to prevent overflow.
Fax Settings Configuration
The MFC-L3770CDW offers extensive fax configuration options accessible via the touchscreen’s Fax menu. Adjust settings like resolution (standard or fine) to balance print quality and transmission speed. Configure the ring count to determine how many rings before the printer answers a fax call.
Enable or disable auto answer for automatic fax reception. Set up a fax log to record incoming and outgoing faxes. Configure error correction for reliable transmission. Modify the sender name and number for clear identification.
Explore options for receiving faxes directly to PC fax software. Ensure proper line settings for optimal performance.

Troubleshooting Common Issues
Resolve typical problems like paper jams, connectivity glitches (network/USB), and print quality concerns (streaks, fading) using the printer’s built-in diagnostics.
Paper Jam Solutions
Addressing paper jams on your Brother MFC-L3770CDW requires a systematic approach. First, immediately power off the printer to prevent damage. Carefully check all access points – the paper tray, the rear cover, and the duplex unit – for any visible obstructions. Gently remove any jammed paper, ensuring you extract it in the direction of the normal paper path to avoid tearing.
Inspect the rollers for debris or damage; clean them with a lint-free cloth if necessary. Avoid using metal objects that could scratch the surfaces. If paper frequently jams, verify you’re using the correct paper type and weight specified in the printer’s manual. Ensure the paper is loaded correctly in the tray, not overfilled, and the paper guides are adjusted snugly.
Consult the Brother support website (brother-usa.com) for detailed diagrams and troubleshooting videos specific to your model.
Connectivity Problems (Network/USB)
Troubleshooting network or USB connectivity issues with your Brother MFC-L3770CDW begins with verifying physical connections. For USB, ensure the cable is securely connected to both the printer and your computer. For network connections, confirm the printer is powered on and connected to your Wi-Fi network.
Check your router and printer’s network settings. Restarting both devices can often resolve temporary glitches. Utilize the Brother iPrint&Scan app to attempt a direct connection. Refer to the Brother support website (brother-usa.com) for updated drivers and network configuration guides.
Confirm your firewall isn’t blocking communication. If problems persist, consult the online FAQs or contact Brother Technical Support for assistance.
Print Quality Issues (Streaks, Fading)
Addressing print quality problems like streaks or fading on your Brother MFC-L3770CDW starts with inspecting the toner cartridge. Ensure it’s properly installed and not low on toner. Gently rock the cartridge to redistribute the toner if necessary.
Clean the printer’s internal components, particularly the drum unit, following the instructions in the user manual. Use a soft, lint-free cloth. Check the print density settings within the printer’s menu; adjusting these can improve output.
Refer to Brother’s support website (brother-usa.com) for troubleshooting guides and potential driver updates. If issues continue, contact Brother Technical Support for further assistance.

Maintenance and Care
Regular cleaning, toner replacement, and drum unit checks are vital for optimal performance. Consult the Brother MFC-L3770CDW manual for detailed guidance.
Cleaning the Printer
Maintaining a clean printer is crucial for consistent print quality and longevity of the Brother MFC-L3770CDW. Regularly remove any loose paper debris from the paper tray and output area. Use a soft, lint-free cloth, lightly dampened with water, to wipe down the exterior surfaces.
Avoid using abrasive cleaners or solvents, as these can damage the printer’s finish. For internal cleaning, refer to the detailed instructions within the official Brother MFC-L3770CDW manual. It outlines specific procedures for cleaning the corona wire and other internal components, ensuring optimal functionality.
Always power off and unplug the printer before performing any cleaning procedures. This prevents electrical shock and potential damage to the internal mechanisms. Consistent cleaning, as described in the manual, will help maintain peak performance.
Replacing Toner Cartridges
Replacing toner cartridges in the Brother MFC-L3770CDW is a straightforward process, ensuring uninterrupted printing. First, ensure the printer is powered on. Open the front cover to access the toner compartment. Gently remove the old toner cartridge by pulling the handle, following the arrows indicated on the unit.
Unpack the new toner cartridge, removing all protective seals and tape. Carefully insert the new cartridge into the compartment until it clicks securely into place. Close the front cover. The printer will automatically detect the new cartridge.
Refer to the Brother MFC-L3770CDW manual for detailed diagrams and troubleshooting tips. Proper cartridge replacement, as outlined in the manual, guarantees optimal print quality and prevents potential printer errors.
Drum Unit Replacement
Replacing the drum unit in your Brother MFC-L3770CDW is essential for maintaining print quality after a certain number of pages. Open the front cover of the printer, similar to toner replacement. Remove the toner cartridge and the drum unit assembly as one piece. Separate the drum unit from the toner cartridge.
Unpack the new drum unit, removing all protective coverings. Align the new drum unit with the guides and gently slide it into place until it clicks. Reinstall the toner cartridge onto the new drum unit. Close the front cover.
Consult the Brother MFC-L3770CDW manual for precise instructions and the recommended replacement interval. Proper drum unit replacement, detailed in the manual, ensures consistent, high-quality prints.

Support Resources
Brother’s support website (brother-usa.com) offers drivers, manuals, FAQs, and a knowledge base. Contact Brother technical support via online chat or phone.
Brother Support Website (brother-usa.com)
Brother’s official website, brother-usa.com, serves as a comprehensive hub for all your MFC-L3770CDW support needs. Here, you can directly download the latest product drivers and software updates, ensuring optimal printer performance and compatibility with your operating system. A complete library of product manuals, including the detailed reference guide, is readily available for download in PDF format.
The website also features an extensive online FAQs and knowledge base, addressing common troubleshooting steps and providing solutions to frequently encountered issues. You’ll find helpful articles and guides covering everything from basic setup to advanced configuration options. Should you require further assistance, the website provides convenient access to Brother’s technical support team through live chat or a dedicated support phone line, offering personalized guidance and expert advice.
Online FAQs and Knowledge Base
Brother’s online FAQs and knowledge base are invaluable resources for resolving common issues with your MFC-L3770CDW. This extensive collection of articles addresses a wide range of topics, from initial setup and connectivity problems to print quality concerns and troubleshooting error messages. You’ll find step-by-step instructions, helpful diagrams, and video tutorials to guide you through various procedures.
The knowledge base is regularly updated with new information and solutions, ensuring you have access to the most current support materials. Searching is easy, allowing you to quickly locate answers to specific questions. This self-service support option empowers you to resolve many issues independently, saving time and effort.
Contacting Brother Technical Support
For personalized assistance with your MFC-L3770CDW, Brother offers multiple channels to connect with their technical support team; They provide FREE support for the life of your product, demonstrating their commitment to customer satisfaction. You can reach them through online chat for immediate assistance, or by phone for more in-depth troubleshooting.
Brother’s support representatives are knowledgeable and can guide you through complex issues, offering tailored solutions to your specific needs. Visit brother-usa.com to find contact information and operating hours. Be prepared to provide your printer model number and a detailed description of the problem you are experiencing.