Brother HL-L6400DW Manual

The Brother HL-L6400DW is a high-speed monochrome laser printer designed for office environments, featuring fast printing speeds up to 40 pages per minute, automatic duplex printing, wired and wireless network connectivity, high-yield toner options, and robust paper handling capabilities. 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 Operations 8. Maintenance & Supplies 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Control panel with LCD display, paper trays, toner cartridge, network interfaces, USB and Ethernet ports.

Feature	Description
Print Speed	Up to 40 pages per minute
Duplex Printing	Automatic two-sided printing
Connectivity	Ethernet, Wi-Fi, USB 2.0
Paper Capacity	Standard 500 sheets, expandable
Toner Yield	High-yield TN-850 cartridge (approx. 12,000 pages)
Display	2-line LCD with navigation buttons
Media Types	Plain, recycled, labels, envelopes, cardstock
Emulations	PCL6, PostScript, Brother BR-Script3
Security	Secure Print, Locked Print, User Authentication
Mobile Printing	Brother iPrint&Scan, AirPrint, Google Cloud Print

Installation

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

Remove all packaging materials and tapes from printer interior.
Install toner cartridge: Open front cover, remove cartridge from packaging, shake gently, insert until clicks.
Load paper: Adjust paper guides in tray, load paper (letter or A4).
Connect power cord to printer and wall outlet.

WARNING! Toner cartridge is heavy; handle with care. Avoid touching the green drum surface.

First-Time Setup

Power on printer; follow initial setup prompts on LCD.

Set language: Use MENU button to select LANGUAGE, choose ENGLISH.
Set date/time: Configure in SYSTEM SETTINGS menu.
Install print drivers: Use installation CD or download from Brother website.
Configure network: Use wired Ethernet or wireless setup wizard.
Print test page: Confirm installation success.

CAUTION! Ensure adequate ventilation; keep away from heat sources and direct sunlight.

Specifications

Print Technology: Monochrome laser electrophotography.
Resolution: Up to 1200 x 1200 dpi.
First Print Out: Less than 8.5 seconds.
Memory: 256MB standard, expandable to 768MB.
Paper Sizes: Letter, Legal, Executive, A4, A5, B5, envelopes.
Input Capacity: 500 sheets (standard), additional 500-sheet tray optional.
Output Capacity: 250 sheets face-down.
Operating Systems: Windows, macOS, Linux.
Power Consumption: Approx. 560W printing, 65W ready, 1.3W sleep.
Dimensions: 16.1" W x 16.3" D x 12.2" H.
Weight: Approx. 44.1 lbs.

Controls and Settings

Access menus via control panel buttons and LCD display.

Control Panel: POWER, GO (status monitor), MENU, UP/DOWN arrows, OK, BACK, STOP/EXIT.

Menu Structure: REPORT (print configuration, network settings), NETWORK (TCP/IP, wireless setup), SYSTEM SETTINGS (language, date/time, sleep timer), PRINT SETTINGS (duplex, density, paper type), SECURITY (locked print, admin password).

Adjust print density: MENU > PRINT SETTINGS > DENSITY (1-5). Configure duplex: MENU > PRINT SETTINGS > DUPLEX PRINT (On/Off). Network configuration: Use BRAdmin Light utility or web browser interface.

Connecting to Network

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

Wired: Connect Ethernet cable to printer and router/switch.
Wireless (WPS): Press and hold WPS button on router, then press GO button on printer for 2 seconds.
Wireless (manual): MENU > NETWORK > WLAN > SETUP WIZARD, select SSID, enter password.
Verify connection: Print network configuration report.

Tip: For stable connection, place printer within range of wireless router, avoiding obstacles.

Printing Operations

Supports standard printing, duplex, multiple copies, collation, poster, booklet printing.

Send print job from computer or mobile device.
Monitor status via LCD or Brother utilities.
Cancel job: Press STOP/EXIT button.
Secure Print: Enter PIN at printer to release job.
Toner Save Mode: Enable in driver settings to reduce toner usage.
Paper selection: Choose appropriate paper type in driver for best results.

WARNING! Do not open covers during printing. Allow printer to cool before maintenance.

Maintenance & Supplies

Replace toner when low message appears. Clean exterior with dry cloth.

Toner replacement: Open front cover, remove old cartridge, install new TN-850 cartridge.
Drum unit replacement: Replace DR-850 drum unit every approx. 50,000 pages.
Paper handling: Clean rollers with lint-free cloth if paper jams occur.
Firmware updates: Download from Brother support website.

CAUTION! Use only Brother genuine supplies. Dispose of used cartridges per local regulations.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. ENERGY STAR® qualified. RoHS compliant. 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 powering on	Power connection	Check power cord connection; ensure outlet is working.
Poor print quality	Toner/low density	Replace toner cartridge; adjust print density; clean corona wire.
Paper jams	Paper loading/rollers	Clear jammed paper; ensure paper guides set correctly; clean rollers.
Not connecting to network	Settings/cables	Verify network settings; restart router/printer; check Ethernet cable.
Driver not installing	OS compatibility	Download correct driver from Brother website; run as administrator.
Toner message persists	Cartridge not seated	Reinstall toner cartridge; ensure protective tape removed.

Reset: MENU > SYSTEM SETTINGS > RESET > FACTORY DEFAULT (caution: erases all settings).

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