Brother MFC-9840CDW Manual

The Brother MFC-9840CDW is a high-performance color laser multifunction printer featuring print, copy, scan, and fax capabilities. It offers fast printing speeds, automatic duplex printing, network connectivity (Ethernet and Wi-Fi), a large color touchscreen display, and support for various media types. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Network 7. Printing and Copying 8. Scanning and Faxing 9. Maintenance & Supplies 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Color laser engine, Automatic Document Feeder (ADF), Large color touchscreen, Paper trays, Toner cartridges (CMYK), Network interfaces, USB port.

Feature	Description
Print Speed	Up to 22 pages per minute (color and monochrome)
Automatic Duplex Printing	Two-sided printing standard
Automatic Document Feeder	50-sheet capacity for scanning/copying
Touchscreen Display	5-inch color LCD for easy navigation
Network Connectivity	Ethernet, Wi-Fi, and Wi-Fi Direct
Paper Capacity	Up to 350 sheets standard
Supported Media	Plain, heavy, labels, envelopes, cardstock
Mobile Printing	Brother iPrint&Scan, AirPrint, Google Cloud Print
Fax Capability	Super G3 with 33.6 Kbps modem
Security Features	Secure Print, User Authentication, Network Security

Installation

Unpack and inspect contents. Place on stable, level surface near power outlet and network connection.

Remove all packaging materials and tapes from inside and outside the printer.
Install toner cartridges: Open front cover, insert CMYK cartridges in correct slots, close cover.
Load paper: Pull out paper tray, adjust guides, load paper, reinsert tray.
Connect power cord to printer and wall outlet.
Connect network cable (Ethernet) if using wired connection.

WARNING! Toner cartridges are heavy; handle with care. Ensure printer is on a stable surface to prevent tipping.

First-Time Setup

Power on printer; follow on-screen prompts on touchscreen display.

Initial startup: Printer will perform self-test and calibration (may take several minutes).
Set language: Select preferred language from display menu.
Set date and time: Configure for accurate fax and print logs.
Network setup: Choose wired (Ethernet) or wireless (Wi-Fi) connection and configure.
Install drivers: Use installation CD or download from Brother website for your computer.

CAUTION! Do not turn off printer during initial setup or firmware updates.

Specifications

Print Technology: Color laser electrophotography.
Print Resolution: Up to 2400 x 600 dpi.
Copy Resolution: Up to 600 x 600 dpi.
Scan Resolution: Up to 1200 x 1200 dpi (optical).
Fax Transmission Speed: Approx. 3 seconds per page.
Memory: 256 MB standard.
Interfaces: USB 2.0, Ethernet 10/100/1000BASE-T, Wi-Fi 802.11b/g/n.
Operating Systems: Windows, macOS, Linux.
Power Consumption: Approx. 570W (printing), 65W (ready), 2.5W (sleep).
Dimensions (W x D x H): Approx. 18.7" x 20.1" x 17.7".
Weight: Approx. 66.1 lbs.

Controls and Settings

Access functions via touchscreen display or control panel buttons.

Control Panel: Power, Home, Copy, Scan, Fax, Menu, Navigation arrows, OK, Back, Stop/Exit.

Touchscreen Menus: - Copy: Set copies, density, paper size, duplex, collage, poster. - Scan: Scan to email, network, USB, OCR settings. - Fax: Dial, speed dial, fax settings, reports. - Settings: Network, security, maintenance, device information. - Print Reports: Configuration page, supplies status, network configuration.

Security: Admin password (default: initpass), Secure Print, User Authentication, Network Security protocols.

Connecting to Network

Wired: Use Ethernet cable to connect to router/switch. Wireless: Configure via touchscreen or WPS.

Wired: Connect Ethernet cable to printer and router. IP address will be assigned automatically (DHCP).
Wireless: Go to Menu > Network > Wireless > Setup Wizard. Select your network and enter password.
Wi-Fi Direct: Enable for direct connection to mobile devices without a router.
Verify connection: Print Network Configuration Report from menu.

Tip: For best performance, place printer within range of your Wi-Fi router.

Printing and Copying

Supports various print and copy functions with customizable settings.

Printing: Send print job from computer or mobile device. Use Secure Print for confidential documents.
Copying: Place original in ADF or on glass. Use touchscreen to set copies, density, size, duplex.
Special Modes: Collage (multiple pages on one sheet), Poster (enlarge across multiple pages), ID Copy (both sides of ID on one page).
Paper Selection: Choose paper type and size for optimal output quality.
Toner Save Mode: Reduce toner consumption for draft documents.

WARNING! Do not touch the fuser unit inside printer; it becomes hot during operation.

Scanning and Faxing

Scan to email, network folder, USB, or cloud services. Send/receive faxes with speed dial and memory.

Scanning: - Place document in ADF or on glass. - Select scan destination (email, folder, USB). - Adjust settings (resolution, format, file name). - Press Start.

Faxing: - Enter fax number using keypad or speed dial. - Place document in ADF. - Adjust resolution and contrast if needed. - Press Start to send. - Receive faxes automatically; store in memory if paper runs out.

Maintenance & Supplies

Replace toner, drum, and paper as needed. Clean exterior and interior periodically.

Toner Replacement: Replace when indicator appears. Use genuine Brother TN-221/ TN-222 cartridges.
Drum Unit Replacement: Replace approximately every 24,000 pages (DR-221/ DR-222).
Paper Jam Clearing: Follow on-screen instructions. Open rear cover and duplex unit to remove jammed paper.
Cleaning: Unplug printer. Use dry, lint-free cloth for exterior. Clean scanner glass with glass cleaner.
Firmware Updates: Check Brother website periodically for updates to improve performance.

CAUTION! Use only Brother genuine supplies. Non-genuine supplies may cause damage and void warranty.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Energy Star certified. Copyright © Brother Industries, Ltd. For support, visit support.brother.com or contact Brother Customer Service at 1-877-276-8437.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Printer not printing	Connection, driver, paper jam	Check network/USB connection; reinstall driver; clear paper jam.
Poor print quality	Low toner, dirty components	Replace toner; clean corona wire; run cleaning cycle from menu.
Paper jams frequently	Paper type, worn rollers	Use recommended paper; clean or replace pickup/separation rollers.
Scanner not working	Driver, connection	Reinstall scanner driver; ensure ADF/glass cover is closed properly.
Fax transmission fails	Phone line, settings	Check phone line connection; verify fax settings and recipient number.
Touchscreen unresponsive	Software lock, dirt	Restart printer; clean screen with soft, dry cloth.

Reset: Menu > Initial Setup > Reset Settings (optional).

Service: 1-877-276-8437; support.brother.com