NEJE DK-8-KZ 3000mW Laser Module Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the NEJE DK-8-KZ 3000mW Laser Module. This module is designed as a replacement or upgrade kit for NEJE DK-8-KZ, DK-8-FKZ, and DK-BL laser engravers, offering adjustable focus and 4-pin TTL/PWM control for precise DIY carving and engraving tasks.

2. Safety Information

WARNING: Laser radiation can cause eye and skin damage. Always wear appropriate laser safety goggles when operating this device. Never look directly into the laser beam. Keep out of reach of children.

• Ensure the laser engraver is turned off and unplugged before installation or maintenance.
• Operate the laser in a well-ventilated area to avoid inhaling fumes from engraved materials.
• Do not engrave or cut reflective, transparent, or flammable materials without proper precautions.
• Always supervise the laser engraver during operation.
• Familiarize yourself with the safety features of your laser engraver before use.

3. Package Contents

Verify that all items are present in your package:

• 1 x 4-pin 445nm Laser Head (3000mW)
• 1 x Power Adapter (for NEJE DK-8-KZ laser engraver) - Note: This adapter is typically for the engraver unit itself, not the module directly, as the module connects to the engraver's mainboard.

4. Specifications

5. Installation and Setup

Follow these steps to install the NEJE DK-8-KZ 3000mW Laser Module into your compatible NEJE laser engraver:

1. Power Off and Disconnect: Ensure your laser engraver is completely powered off and unplugged from the power source.
2. Access Engraver Interior: Carefully open the engraver casing to access the internal components, specifically the area where the laser module is mounted. This may involve removing screws from the side panel.
3. Remove Existing Laser Module: Disconnect the wiring from the old laser module and carefully unmount it from its position. Keep any screws or fasteners organized.
4. Mount New Laser Module: Position the new NEJE DK-8-KZ 3000mW Laser Module in the designated slot. Secure it using the appropriate screws.
5. Connect Wiring: Connect the 4-pin cable from the new laser module to the corresponding port on the engraver's mainboard. Refer to the wiring diagram below for correct pin assignments.



6. Close Engraver Casing: Once the laser module is securely mounted and wired, carefully close the engraver casing and re-fasten any screws.

For a visual guide, please refer to the installation video:

6. Operation

After successful installation, you can begin using your laser module for engraving and carving. Always refer to your specific NEJE engraver's software and operational guidelines for detailed instructions.

6.1. Focusing the Laser

The NEJE DK-8-KZ laser module features an adjustable focus. Proper focusing is crucial for achieving sharp and precise engraving results.

1. Place a test material (e.g., a piece of cardboard) on the engraving platform.
2. Initiate a low-power laser test fire (refer to your engraver's software for this function).
3. Carefully rotate the knurled ring on the laser head to adjust the focus until the laser dot on the material is as small and sharp as possible.
4. Once focused, avoid moving the laser head vertically during engraving to maintain optimal focus.

6.2. Engraving and Carving

The 3000mW laser is suitable for engraving on various materials such as wood, plastic, leather, and paper. Experiment with different power and speed settings in your engraver's software to achieve desired results on specific materials.

7. Maintenance

Proper maintenance ensures the longevity and optimal performance of your laser module:

• Clean the Lens: Regularly inspect and gently clean the laser lens with a lint-free cloth and lens cleaning solution (if recommended by the manufacturer) to prevent dust and debris from affecting beam quality.
• Keep Area Clean: Maintain a clean working environment to minimize dust accumulation on the laser module and engraver components.
• Avoid Overheating: Ensure adequate ventilation for your engraver. While NEJE lasers are designed with aging resistance and temperature control, prolonged operation in high ambient temperatures can affect performance.
• Handle with Care: Lasers are sensitive electronic components. Avoid dropping or subjecting the module to physical shock.

8. Troubleshooting

If you encounter issues with your laser module, consider the following common problems and solutions:

• Laser Not Firing:
  • Check all cable connections, especially the 4-pin connector, to ensure they are secure.
  • Verify that the engraver is powered on and receiving power.
  • Confirm that the laser module is correctly recognized by the engraver's software.
  • Ensure the emergency stop button (if present on your engraver) is not engaged.
• Weak Laser Output / Poor Engraving Quality:
  • Re-focus the laser carefully (refer to Section 6.1).
  • Clean the laser lens for any dust or debris.
  • Check the material being engraved; some materials require higher power or slower speeds.
  • Verify software settings for power and speed are appropriate for the material.
• Module Overheating:
  • Ensure the engraver's cooling fan (if applicable) is functioning correctly.
  • Operate in a cooler environment if possible.
  • Allow the module to cool down between long engraving sessions.

If problems persist, contact NEJE customer support for further assistance.

9. User Tips

No specific user tips were available from reviews or Q&A for this product. However, general tips for laser module users include:

• Always perform small test engravings on new materials to find the optimal power and speed settings.
• Use a fume extractor or work in a well-ventilated area to manage smoke and odors.
• Keep your workspace tidy and free of flammable materials.

10. Warranty and Support

NEJE provides a 2-year warranty for its laser modules, ensuring quality and reliability. All laser modules undergo rigorous aging tests to prevent power attenuation and maintain temperature within standard ranges for extended use.

For after-sales service, NEJE offers global free-shipping for replacements based on video evidence of issues. Please contact NEJE customer support with your purchase details and a video demonstrating the problem for warranty claims or technical assistance.

Contact information for support can typically be found on the official NEJE website or through your purchase platform.