Lexmark T644 Manual PDF

The Lexmark T644 is a high-performance monochrome laser printer designed for small to medium-sized workgroups. It offers fast printing speeds, high-quality output, and a variety of features to enhance productivity. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Printing Documents 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-speed printing, automatic duplexing, large paper capacity, network connectivity, and advanced security features.

Feature	Description
Print Speed	Up to 45 pages per minute
Print Resolution	1200 x 1200 dpi
Duplex Printing	Automatic double-sided printing
Paper Capacity	Standard 250-sheet input tray
Connectivity	USB, Ethernet, and optional wireless
Security Features	Secure printing and user authentication

Installation

Unpack and inspect contents. Place on a stable surface.

Connect power cable to the printer and plug it into an outlet.
Connect to your computer or network using USB or Ethernet.
Load paper into the input tray.

WARNING! Printer is heavy; lift with care to avoid injury. Ensure all connections are secure.

First-Time Setup

Power on the printer; follow on-screen prompts.

Install the printer driver on your computer.
Configure network settings if applicable.
Print a test page to ensure proper setup.

CAUTION! Ensure stable surface; use two people for handling.

Specifications

Print Technology: Laser.
Print Speed: Up to 45 ppm.
Print Resolution: 1200 x 1200 dpi.
Memory: 256 MB standard, expandable.
Paper Handling: 250-sheet input tray, 100-sheet output bin.
Connectivity: USB 2.0, Ethernet, optional wireless.
Dimensions: 15.5 x 16.5 x 12.5 inches.
Weight: Approximately 40 lbs.

Controls and Settings

Access printer settings via the control panel. Key buttons include Power, Cancel, and Menu.

Display: LCD screen for easy navigation.

Settings include print quality, paper type, and network configuration.

Connecting Devices

Connect via USB or Ethernet for network printing.

Turn off the printer and computer before connecting.
Match cables to ports (e.g., USB to USB port).
Install necessary drivers on your computer.

Tip: Ensure printer is off and unplugged before connecting cables.

Printing Documents

Supports various document types including text and graphics.

Select document to print from your computer.
Choose the Lexmark T644 as the printer.
Adjust print settings as needed.
Click Print to start the job.

WARNING! Ensure paper is loaded correctly to avoid jams.

Accessibility Features

Printer includes features for visually impaired users, such as audio prompts and tactile buttons.

Care & Cleaning

Unplug before cleaning. Use a dry cloth only; no liquids or aerosols.

CAUTION! Do not spray liquids; keep away from heat and moisture.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2026 Lexmark; trademarks of Lexmark International, Inc. For support, visit www.lexmark.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Printer not responding	Power or connection issue	Check power supply and connections.
Paper jam	Incorrect paper loading	Remove jammed paper and reload correctly.
Print quality issues	Low toner or settings	Check toner levels and adjust print settings.
Network issues	Connection problem	Verify network settings and connections.

Reset: Menu > System > Reset if available.

Service: Contact Lexmark support for assistance.