Brother MFC-9120CN Manual

The Brother MFC-9120CN is a multifunction color laser printer offering printing, scanning, copying, and faxing capabilities. It features network connectivity, automatic duplex printing, a 50-sheet automatic document feeder, and a 250-sheet paper capacity. 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 Devices 7. Printing & Scanning 8. Maintenance Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Color laser engine, Automatic Document Feeder (ADF), control panel with LCD, network interface, USB port, paper trays.

Feature	Description
Print Speed	Up to 20 ppm black, 4 ppm color
Print Resolution	Up to 2400 x 600 dpi
Automatic Duplex	Two-sided printing standard
Paper Capacity	250 sheets standard
ADF Capacity	50 sheets
Connectivity	USB 2.0, Ethernet 10/100BaseTX
Fax Capability	33.6 Kbps modem, 100-page memory
Scanner Type	Flatbed + ADF, color CIS
Copy Features	Reduce/Enlarge, ID Copy, N-up
Control Panel	LCD display, navigation keys, numeric keypad

Installation

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

Remove all packing materials and tapes from inside and outside the unit.
Install toner cartridges: Open front cover, remove protective materials, insert black, cyan, magenta, yellow cartridges.
Load paper: Adjust paper guides in tray, load up to 250 sheets of plain paper.
Connect power cord to AC inlet and wall outlet.
Connect to computer via USB cable or to network via Ethernet cable.

WARNING! Toner cartridges are heavy; handle with care. Ensure all packing materials are removed to prevent damage.

First-Time Setup

Power on the device; follow on-screen prompts on LCD or computer.

Initial startup: The device will perform a self-test and calibration cycle (takes several minutes).
Install software: Insert driver CD or download from Brother website, follow installation wizard.
Configure network (if applicable): Use control panel to set IP address or use automatic DHCP.
Test print: Print a configuration page from the control panel to verify operation.
Register product: Optional online registration for support updates.

CAUTION! Do not turn off the device during initial startup or firmware updates.

Specifications

Type: Color Laser Multifunction Printer.
Functions: Print, Scan, Copy, Fax.
Print Technology: Laser electrophotography.
Print Speed: Black: Up to 20 ppm, Color: Up to 4 ppm.
Memory: 64 MB standard.
Paper Sizes: Letter, Legal, Executive, A4, A5, B5, envelopes.
Scanner Resolution: Up to 1200 x 1200 dpi.
Fax Transmission: Approx. 3 seconds per page.
Power Source: 120V AC, 60Hz.
Dimensions (WxDxH): 18.7" x 19.1" x 18.5".
Weight: Approx. 62.4 lbs.

Controls and Settings

Access functions via control panel LCD menu or Brother software on computer.

Control Panel Buttons: POWER, COPY, FAX, SCAN, MENU, UP/DOWN arrows, OK, STOP/EXIT, numeric keypad.

Print Settings: Quality (Draft, Normal, Fine), Paper Type, Duplex, Color Adjustment. Copy Settings: Number of Copies, Reduce/Enlarge (25%-400%), Darkness, Quality. Scan Settings: Resolution, File Format (PDF, JPEG), Destination. Fax Settings: Dialing (manual, speed dial), Resolution, Contrast. Network Settings: TCP/IP, WSD, Bonjour. Maintenance: Print Reports, Clean Drum, Firmware Update.

Connecting Devices

USB: Direct connection to computer. Network: Ethernet to router/switch.

Turn off device and computer before connecting USB cable.
For network, connect Ethernet cable to device and router.
Power on device, then computer.
Install drivers; device should be detected automatically.
For wireless, optional wireless print server adapter required (sold separately).

Tip: Use shielded USB cable no longer than 3 meters for reliable connection.

Printing & Scanning

Supports printing from various applications, scanning to email, file, or OCR.

Printing: Select "Brother MFC-9120CN" as printer in application, adjust properties as needed.
Copying: Place original on glass or in ADF, press COPY, set options, press START.
Scanning: Place original, press SCAN, choose destination (PC, Email, File), press START.
Faxing: Place document, dial number using keypad or speed dial, press START.
Duplex Printing: Enable in printer driver or control panel for automatic two-sided prints.
ADF Use: Load multiple pages face up in ADF for automatic feeding during copy/scan/fax.
Quality Adjustment: Use TONE key on control panel to adjust copy darkness/quality.

WARNING! Do not look directly at laser beam inside device. Keep hands clear of paper path during operation.

Maintenance Features

Toner Replacement: LCD indicates low toner; replace individual color cartridges. Drum Unit Replacement: Replace when message appears (approx. every 4 toner cartridges). Cleaning: Clean exterior with dry cloth; clean paper feed rollers if paper jams occur. Firmware Updates: Download from Brother support website to maintain performance.

Care & Cleaning

Unplug before cleaning. Use dry, lint-free cloth; for stubborn stains, dampen cloth with water only. Do not use alcohol, solvents, or abrasive cleaners.

CAUTION! Never spray liquids directly on device. Keep away from humidity and extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Energy Star® qualified. Copyright © Brother Industries, Ltd. For support, visit www.brother-usa.com or contact Brother Customer Service at 1-877-267-8437.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord, outlet	Ensure power cord is securely connected; try different outlet; check power switch.
Paper jams	Paper loaded incorrectly, worn rollers	Open covers, carefully remove jammed paper; reload paper properly; clean rollers.
Poor print quality	Low toner, dirty drum	Replace low toner cartridge; clean corona wire; run printer maintenance utility.
Not printing from computer	Driver, connection, queue	Reinstall driver; check USB/network cable; clear print queue; restart devices.
Scanner not working	Software, connection	Reinstall scanner driver; ensure TWAIN/WIA is selected; check cable connection.
Fax issues	Phone line, settings	Check phone line connection; verify fax settings (dial mode, resolution); test with known good line.

Reset: Menu > Initial Setup > Reset Settings if available.

Service: 1-877-267-8437; www.brother-usa.com