Brother DCP-J4120DW Manual

The Brother DCP-J4120DW is an All-in-One Color Inkjet Printer featuring print, copy, and scan functions. It supports wireless and wired network connectivity, automatic duplex printing, a 150-sheet paper capacity, and high-yield ink cartridges for cost-effective printing. Below are key sections covering setup, features, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Control Panel with LCD, Paper Tray, Scanner Unit, Ink Cartridge Slots, USB Port, Ethernet Port, Wi-Fi Indicator.

Installation & Setup

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

1. Install ink cartridges: Open front cover, insert cartridges in correct slots (Black, Cyan, Magenta, Yellow).
2. Load paper: Adjust paper guides in tray, load up to 150 sheets of plain paper.
3. Connect power: Plug power cord into printer and wall outlet.
4. Turn on printer: Press POWER button.
5. Install print head: Printer will automatically align print head during first setup.

WARNING! Do not touch ink nozzles or copper contacts. Keep printer away from heat sources.

First-Time Configuration

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

1. Select language: Use arrow keys to choose language, press OK.
2. Set date/time: Configure current date and time for print logs.
3. Network setup: Choose wired (Ethernet) or wireless connection.
4. Install software: Insert CD or download drivers from Brother website.
5. Print test page: Verify installation and print quality.

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

Specifications

• Printer Type: Color inkjet All-in-One.
• Functions: Print, Copy, Scan.
• Resolution: Up to 1200 x 6000 dpi (print), 1200 x 2400 dpi (scan).
• Paper Sizes: Letter, Legal, A4, envelopes, photo sizes.
• Scanner: Flatbed, 24-bit color depth.
• Copy Speed: Up to 7 cpm (black), 3 cpm (color).
• Memory: 64 MB.
• Power Consumption: Approx. 0.9W (standby), 25W (printing).
• Dimensions: 16.1" x 15.7" x 7.8".
• Weight: 13.2 lbs.

Controls and Functions

Control Panel: POWER, HOME, BACK, OK, Arrow keys, COPY, SCAN, Wi-Fi button, STOP/EXIT.

LCD Menu: Network settings, Print reports, Maintenance, Reset, Default settings.

Copy Settings: Number of copies, Darkness, Reduce/Enlarge (25%-400%), Paper size, 2-sided copy. Scan Settings: Scan to PC, Scan to email, File format (PDF, JPEG), Resolution. Network: Wi-Fi setup wizard, WPS connection, Network status print.

Connecting to Network

Wired: Connect Ethernet cable to router and printer. Wireless: Use WPS or manual setup.

1. Press HOME on control panel, select Network > Wireless.
2. Choose setup method: WPS (push button) or manual (select SSID, enter password).
3. Confirm connection: Wi-Fi indicator lights solid blue when connected.
4. Print network configuration: Menu > Reports > Network Configuration.

Tip: Place printer within range of Wi-Fi router for stable connection.

Printing & Copying

Supports documents, photos, envelopes, labels.

1. Print from computer: Select Brother printer in print dialog, adjust settings.
2. Copy: Place document face down on scanner glass, press COPY, set options, press Start.
3. Duplex printing: Enable in printer driver or on control panel (2-sided).
4. Multiple copies: Use numeric keypad on LCD during copy operation.
5. Photo printing: Use glossy photo paper, select "Photo" paper type in settings.
6. Cancel job: Press STOP/EXIT button.

WARNING! Use only Brother Genuine ink to avoid print head damage.

Scanning Features

Scan to computer, email, cloud services, or USB drive (with optional adapter).

1. Place document: Face down on scanner glass or use ADF (optional).
2. Press SCAN button on control panel.
3. Select destination: PC, Email, Cloud (Google Drive, Dropbox).
4. Adjust settings: Resolution, file format, color mode.
5. Press Start to scan.

Note: Install Brother software for full scanning functionality.

Maintenance & Ink

Replace ink when low or empty message appears. Clean print head if print quality declines.

1. Ink replacement: Open front cover, press ink latch, remove old cartridge, insert new one.
2. Print head cleaning: Menu > Maintenance > Clean Print Head.
3. Nozzle check: Print test pattern to verify ink flow.
4. Exterior cleaning: Unplug, use dry soft cloth. Do not use alcohol or solvents.

CAUTION! Do not turn off printer during ink replacement or cleaning cycle.

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. Warranty: 1-year limited warranty.

Troubleshooting

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

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