Brother MFC-790 Manual

The Brother MFC-790 is a multifunction center featuring printing, scanning, copying, and faxing capabilities. It includes a flatbed scanner, automatic document feeder, built-in telephone handset, PC connectivity via USB, and support for various paper sizes. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Flatbed scanner, Automatic Document Feeder (ADF), Telephone handset, Control panel with LCD display, Paper trays, USB port, Power supply.

Feature	Description
Print Technology	Inkjet printing
Print Resolution	Up to 6000 x 1200 dpi
Scan Resolution	Up to 1200 x 2400 dpi
Copy Speed	Up to 20 pages per minute (black)
Fax Memory	Up to 100 pages
Paper Capacity	Up to 150 sheets
Connectivity	USB 2.0
Telephone Handset	Built-in for fax/telephone use
ADF Capacity	Up to 30 sheets
Display	Backlit LCD with navigation buttons

Installation

Unpack and inspect contents. Place on stable, level surface near power outlet and telephone jack.

1. Install ink cartridges: Open front cover, insert black and color cartridges as indicated.
2. Load paper: Adjust paper guides in tray, load plain paper face down.
3. Connect telephone line: Plug telephone cable into LINE port on rear.
4. Connect to PC: Use USB cable to connect to computer.
5. Plug into AC power.

WARNING! Do not touch ink cartridges or print head contacts. Ensure all protective tapes are removed.

First-Time Setup

Power on device; follow on-screen prompts on LCD display.

1. Install software: Insert CD or download drivers from Brother website.
2. Align print head: Use maintenance menu on control panel to align cartridges.
3. Set date/time: Navigate to SETUP menu to configure system clock.
4. Test functions: Print test page, copy document, and scan to ensure proper operation.

CAUTION! Keep device away from heat sources and ensure proper ventilation.

Specifications

• Functions: Print, Scan, Copy, Fax.
• Print Speed: Up to 20 ppm black, 15 ppm color.
• Scan Type: Flatbed + ADF.
• Fax Speed: Approx. 33.6 kbps.
• Paper Sizes: Letter, Legal, A4, envelopes, photo sizes.
• Ink Cartridges: Black (LC-37BK), Color (LC-37C/M/Y).
• Power Source: 120V AC, 60Hz.
• Dimensions: Approx. 17.7" W x 14.6" D x 10.6" H.
• Weight: Approx. 15.4 lbs.

Controls and Settings

Access functions via control panel buttons and LCD menu.

Control Panel: POWER, COPY, SCAN, FAX, MENU, navigation arrows, OK, STOP/EXIT.

Print Settings: Quality (Draft, Normal, Best), paper type, grayscale. Copy Settings: Number of copies, darkness, reduce/enlarge. Scan Settings: Resolution, file format (PDF, JPEG), destination. Fax Settings: Dial mode (tone/pulse), redial, fax header. Setup: Language (default ENGLISH), date/time, ring volume, contrast.

Connecting Devices

PC: USB connection. Telephone: LINE port for fax/phone line.

1. Turn off device before connecting cables.
2. Connect USB cable to PC and device.
3. Connect telephone line to LINE port and wall jack.
4. Power on device and install drivers if prompted.

Tip: Use surge protector for power and telephone lines.

Printing & Scanning

Supports various document types and photo printing.

1. Printing: Select print from PC application, adjust settings as needed.
2. Copying: Place document on glass or in ADF, press COPY, set copies and options.
3. Scanning: Place document, press SCAN, select destination (PC, memory card).
4. Photo Printing: Use photo paper, select appropriate paper type in settings.
5. Maintenance: Clean print head via maintenance menu if print quality declines.

WARNING! Do not open covers during printing. Keep hands clear of moving parts.

Fax Functions

Send and receive faxes manually or automatically.

1. Sending: Place document, dial number using keypad or speed dial, press START.
2. Receiving: Set to AUTO for automatic reception, or MANUAL to answer with handset.
3. Memory: Stores received faxes if paper runs out.
4. Redial: Automatically redials busy numbers.
5. Report: Print transmission confirmation report.

Fax Header: Set company name/phone number in setup menu.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth; clean exterior regularly.

1. Clean scanner glass: Use lint-free cloth and glass cleaner if needed.
2. Clean rollers: Use damp cloth, ensure device is off.
3. Replace ink: When low ink warning appears, replace cartridges promptly.
4. Update firmware: Check Brother website for updates.

CAUTION! Do not use abrasive cleaners or spray directly on device.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. Industry Canada ICES-003 compliant. Copyright © Brother Industries, Ltd. For support, visit support.brother.com or contact 1-877-267-8437.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; try different outlet.
Poor print quality	Ink/print head	Replace ink cartridges; run print head cleaning.
Paper jams	Paper loading	Clear jammed paper; reload correctly.
Scanner not working	Connection/software	Reconnect USB; reinstall scanner driver.
Fax transmission fails	Line/numbers	Check telephone line; verify recipient number.
LCD blank	Power/settings	Check power; adjust contrast in setup menu.

Reset: Menu > Initial Setup > Reset All Settings if needed.

Service: 1-877-267-8437; support.brother.com