If your Nano Pro laser engraver suddenly stops during engraving, it is usually related to USB connection issues or a machine safety alarm. This guide explains the common causes and how to fix them quickly.

1. USB Data Connection Loss

A loose or damaged USB cable can interrupt communication between your computer and the laser engraver, causing the job to stop mid-process.

How to fix:

• Reconnect the USB cable securely
• Replace the cable if it is worn or unstable
• Ensure a stable connection before starting engraving

2. Machine Alarm Triggered

The machine may automatically stop when a safety alarm is triggered, such as vibration, tilting, or unsafe operating conditions. When this happens, the red indicator light will turn on.

How to fix:

• Remove the cause of the alarm (e.g., stabilize the machine)
• Wait for the alarm to clear and resume operation
• If the alarm persists, connect to your computer
• Open LightBurn or LaserBurn and enter $X in the console to reset the alarm

Conclusion

If your Nano Pro stops during engraving, the issue is most commonly caused by a USB connection failure or a triggered safety alarm. By checking the cable connection and resetting the alarm using $X, you can quickly restore normal operation and continue engraving without further interruption.

👉 Keeping your connection stable and ensuring a safe working environment will help prevent most engraving interruptions.

If you are experiencing connection issues when using LaserBurn via IP with your Nano Pro laser engraver, the problem is usually related to network settings or device conflicts. Follow the troubleshooting steps below to quickly restore the connection.

1. Network Configuration

The Nano Pro and your computer must be connected to the same network for IP communication to work properly. If they are on different networks, the connection will fail.

How to fix:

• Ensure both devices are on the same Wi-Fi network
• Configure or verify the network settings via the machine screen or mobile app
• Restart the router or reconnect devices if needed

2. Device Already in Use

The Nano Pro only supports one active IP connection at a time. If the machine is already connected to another device or software, new connections will be blocked.

How to fix:

• Disconnect the machine from any other software or device
• Close any previously connected LaserBurn or LightBurn sessions
• Reconnect and try again

Conclusion

LaserBurn IP connection issues on Nano Pro are typically caused by network mismatch or multiple active connections. Ensuring both devices are on the same network and confirming the machine is not already in use will resolve most problems quickly.

For stable performance, always maintain a consistent network connection and avoid running multiple IP connections simultaneously.

• Lightburn: Click the button, select this port from the COM port list, and set

961200 baud rate.

Conclusion

Most Nano Pro connection issues are caused by wrong cables, missing CH340 drivers, incorrect port selection, or baud rate mismatch.

By ensuring a proper data cable, installing the correct driver, selecting the right COM port, and setting the baud rate to 961200, you can quickly restore a stable connection and start engraving smoothly.

If the cooling fan on your Ray5 laser module is damaged or not functioning properly, replacing it is a straightforward process. Follow the steps below to safely install a new fan and ensure proper cooling performance.

Step-by-Step Instructions

1. Remove the screws
Use a Phillips screwdriver to carefully unscrew and remove the screws securing the fan.

2. Disconnect the fan cable
Unplug the fan cable from the mainboard, then remove the old fan from the laser head.

3. Install the new fan
Connect the new fan cable to the mainboard. Install the fan into the laser head, ensuring the intake side faces up and the exhaust side faces down for proper airflow.

4. Secure the fan
Use a Phillips screwdriver to tighten the screws and firmly fix the fan in place.

Conclusion

Replacing the fan on your Ray5 10W or 5W laser module is an essential maintenance task to ensure proper cooling and stable performance. A correctly installed fan helps prevent overheating and extends the lifespan of your laser engraver.

By following the correct installation steps and ensuring the proper airflow direction, you can keep your machine running safely and efficiently. Always make sure the machine is powered off before performing any maintenance.

Cleaning the lens window and nozzle of a laser engraver is an essential and routine maintenance task.
A dirty lens window can severely reduce laser power, causing weak or uneven engraving/cutting.
A clogged nozzle can disrupt the flow of assist air, resulting in poor cutting quality and even potential damage to the laser head due to insufficient cooling.

Below is a detailed and safe cleaning guide.

Core Principles: Safety First!

Power Off and Cool Down:
Always turn off the laser engraver and unplug the power cord before cleaning.
Wait until the laser head is completely cool, especially after recent use when it may still be very hot.

Extreme Gentleness:
Both the lens window and nozzle are delicate and fragile (especially the coating on the lens surface).
Any scratch can cause permanent damage. Handle with care and apply very light pressure during cleaning.

Use Proper Tools:
Prepare professional cleaning tools.
Avoid using paper towels or clothing that can leave fibers or cause scratches.

Part 1: Cleaning the Laser Head Lens Window

The lens window protects the internal mirrors and lenses of the laser module, and it is the most likely component to accumulate smoke and dust.

Required Tools:

Anhydrous alcohol (≥99% purity): Evaporates quickly without leaving water stains.
Avoid medical alcohol, which contains water and other additives.

Lint-free cotton swabs/lens cleaning sticks: With wooden or plastic handles wrapped in microfiber.

Air blower/camera dust blower: For removing large dust particles.

Gloves (optional but recommended): Prevent fingerprints and oil stains.

Cleaning Steps:

1. Remove the Lens Window:

Gently unscrew the lens holder (usually counterclockwise).

Place the lens on a clean, soft surface such as lint-free paper or tissue.

2. Blow Off Dust:

Use the air blower to gently blow both sides of the lens to remove surface dust and particles.
This prevents scratches during wiping.

3. Alcohol Cleaning:

Take a new lint-free swab and apply 1–2 drops of anhydrous alcohol—it should be damp, not dripping.

Start from the center of the lens and gently wipe outward in a spiral motion.
Do not wipe back and forth.

Use a new swab, moistened again with alcohol, to repeat the spiral cleaning for a deeper cleanse.

4. Dry and Inspect:

Use a clean, dry, lint-free swab to absorb any residual alcohol, again moving from center outward.

Hold the lens toward a light source (e.g., phone flashlight) and inspect from multiple angles.
Ensure there are no fingerprints, watermarks, or dust.
If contamination remains, repeat the previous steps.

5. Reinstall the Lens:

Ensure the lens holder is clean (use the air blower if needed).

Carefully reinstall the lens in its original orientation (the coated side usually faces inward—if unsure, refer to its direction before removal).

Screw the retaining ring back securely but not too tightly to avoid cracking the lens.

Part 2: Cleaning the Nozzle

The nozzle directs assist air (or oxygen/nitrogen) to the cutting point, helping to remove molten material and provide cooling.
It often becomes clogged with smoke residue or melted debris.

Required Tools:

Same as those for lens cleaning: anhydrous alcohol and lint-free swabs.

Fine needle, nozzle cleaner, or toothpick (for unclogging small holes).

A small container (for soaking the nozzle).

Cleaning Steps:

1. Remove the Nozzle:

The nozzle is usually threaded under the laser head. Unscrew it counterclockwise.

Be aware that some accumulated dust may fall out.

2. Physical Unclogging:

If the nozzle outlet is blocked by molten debris, use a fine needle or nozzle cleaner to gently clear the hole.
Be very careful not to enlarge or scratch the inner surface—this could affect airflow precision.

For double-layer nozzles, check the gaps between layers for blockage.

3. Soaking and Brushing:

For stubborn oil or residue, soak the nozzle in anhydrous alcohol for 10–15 minutes.

After soaking, use a lint-free swab or a soft brush (like an old toothbrush) to gently clean the inside and outside of the nozzle, especially around the outlet.

4. Rinse and Dry:

Rinse the nozzle again with fresh anhydrous alcohol.

Use the air blower to completely dry both the inside and outside of the nozzle, ensuring no moisture remains.
This is critical, as moisture can affect cutting performance.

5. Reinstall the Nozzle:

Once fully dry, screw the nozzle back into place.
Tighten it securely, but avoid overtightening to prevent thread damage.

Recommended Cleaning Frequency

Daily / Before Each Use:
Use an air blower to remove surface dust from the lens window and nozzle.

Weekly or Every 40 Hours of Operation:
Perform a full visual inspection and clean thoroughly if any contamination is visible.

Clean Immediately If Any of the Following Occur:

Laser power output drops noticeably (cutting depth decreases at the same power).

Engraving/cutting lines become uneven or blurry.

Sparks are unusually large or have strange colors during cutting.

A garlic-like (ozone) smell appears—this may indicate lens contamination causing beam refraction.

If the window lens on your Ray5 laser module becomes dirty or damaged, replacing it can help maintain engraving quality and protect the internal optical components. This guide walks through the exact replacement process for Ray5 laser modules while providing beginner-friendly explanations, maintenance tips, and troubleshooting advice.

Table of Contents

1. What This Guide Covers
2. Quick Answer
3. Why This Process Matters
4. Before You Start
   • Requirements
   • Precautions
5. Step-by-Step Tutorial
6. Common Problems and Solutions
7. Tips for Better Results
8. Frequently Asked Questions
9. Final Thoughts

What This Guide Covers

This tutorial explains how to replace the window lens on a Ray5 laser module without changing the original procedure or sequence. It includes:

• Removing the laser protective cover
• Detaching the nozzle on 10W laser modules
• Removing the old window lens
• Installing the replacement lens
• Reassembling the laser module correctly

The guide is suitable for beginners and helps ensure safe maintenance and stable engraving performance.

Quick Answer

To perform a Ray5 laser window lens replacement:

1. Remove the laser protective cover.
2. For 10W modules, loosen the nozzle screws and remove the nozzle.
3. Unscrew the window lens counterclockwise.
4. Install the new lens.
5. Reattach the nozzle and pump connection port.

Always power off the machine before performing maintenance.

Why This Process Matters

The window lens is an important part of the Ray5 laser module. During engraving and cutting, smoke, dust, and debris can gradually accumulate on the lens surface. Over time, this contamination may reduce laser power efficiency and affect engraving precision.

A damaged or dirty lens can lead to:

• Reduced engraving quality
• Weak or inconsistent laser output
• Poor cutting performance
• Increased stress on internal optical components

Replacing the window lens helps maintain optimal engraving performance and protects the optical system from damage or debris.

Before You Start

Requirements

Before replacing the Ray5 laser window lens, prepare the following:

• Ray5 laser engraver
• Compatible replacement window lens
• M1.5 hex wrench
• Clean workspace
• Soft microfiber cloth

Follow official machine specifications or instructions.

Precautions

Before starting the replacement process, keep these safety guidelines in mind:

• Always power off the machine before maintenance.
• Disconnect the power supply before touching the laser module.
• Avoid touching the lens surface directly with your fingers.
• Work in a clean environment to prevent dust contamination.
• Handle the nozzle and lens carefully to avoid scratches or damage.

Proper handling helps maintain engraving quality and extends the life of the optical system.

Step-by-Step Tutorial

Step 1: Remove the Laser Protective Cover

Action

Rotate the pump connection port counterclockwise to detach it.

For 10W laser modules:

Use an M1.5 hex wrench to loosen the nozzle screws through the small hole under the dovetail slot, then carefully remove the nozzle.

Expected Result

• The laser protective cover is detached.
• On 10W modules, the nozzle is removed successfully.
• The window lens becomes accessible for replacement.

Important Notes

• Use the correct M1.5 hex wrench size to avoid damaging the screws.
• Loosen the screws gently and evenly.
• Keep small screws in a safe place during maintenance.

Removing the nozzle carefully helps prevent accidental damage to the laser module assembly.

10W

Step 2: Remove the Window Lens

Action

Unscrew the window lens by turning it counterclockwise.

Expected Result

The old window lens is removed from the laser module.

Important Notes

• Rotate the lens slowly to avoid cross-threading or slipping.
• Avoid applying excessive force.
• If the lens is dirty, handle it carefully to avoid spreading debris inside the module.

A damaged or contaminated lens may appear cloudy, scratched, or burned.

Step 3: Install the New Lens

Action

Place and secure the new window lens. Then reinstall the nozzle and reattach the pump connection port.

Expected Result

• The replacement lens is installed securely.
• The nozzle is properly reinstalled.
• The pump connection port is attached correctly.

Important Notes

• Ensure the new lens sits properly before tightening.
• Reinstall the nozzle carefully to maintain alignment.
• Follow official machine specifications or instructions.

Correct installation helps maintain stable laser output and consistent engraving quality.

Common Problems and Solutions

Tips for Better Results

• Clean the laser area regularly to reduce smoke buildup.
• Inspect the window lens periodically for scratches or residue.
• Avoid touching optical surfaces directly.
• Store replacement lenses in a dust-free container.
• Perform maintenance in a well-lit workspace for better visibility.
• Replace damaged lenses promptly to protect the optical system.

Regular laser module maintenance can improve engraving consistency and prolong machine lifespan.

Frequently Asked Questions

1. When should I replace the Ray5 window lens?

Replace the lens if it becomes dirty, scratched, cloudy, or damaged and starts affecting engraving quality.

2. Can a dirty lens reduce laser power?

Yes. Dust and residue on the lens can weaken laser output and reduce engraving precision.

3. What tool is needed for the 10W laser module?

An M1.5 hex wrench is required to loosen the nozzle screws.

4. Do I need to remove the nozzle on all Ray5 modules?

The nozzle removal step specifically applies to 10W laser modules.

5. What direction removes the window lens?

Unscrew the window lens by turning it counterclockwise.

6. Can I clean the lens instead of replacing it?

If the lens is only dirty, cleaning may help. If it is damaged or scratched, replacement is recommended.

7. Why is engraving quality still poor after replacement?

Check whether the lens is installed correctly and ensure the nozzle and pump connection port are properly reattached.

8. Is it necessary to power off the machine before maintenance?

Yes. Always power off the machine before performing any maintenance or replacement.

Final Thoughts

Replacing the window lens on your Ray5 laser module is an important maintenance task that helps maintain engraving quality and protect the internal optical system. By following the exact replacement procedure carefully, users can ensure stable laser output and consistent engraving performance.

Proper maintenance, careful handling, and regular inspections can help extend the life of your Ray5 laser module and improve long-term reliability.

Replacing the X-axis or Y-axis motor on your Ray5 laser engraver is a critical maintenance task that ensures smooth motion and precise engraving. This guide provides a detailed, beginner-friendly walkthrough using the Ray5 40W X-axis motor as an example while preserving the original procedures and sequence.

Table of Contents

• What This Guide Covers
• Quick Answer
• Why This Process Matters
• Before You Start
  • Requirements
  • Precautions
• Step-by-Step Tutorial
• Common Problems and Solutions
• Tips for Better Results
• Frequently Asked Questions
• Final Thoughts

What This Guide Covers

This tutorial covers the complete replacement process for the X-axis or Y-axis motor on Ray5 10W, 5W, and 40W laser engravers. Topics include:

• Disconnecting and removing the old motor
• Loosening timing belts
• Installing the new motor with proper orientation
• Ensuring correct belt tension
• Testing for smooth operation

Quick Answer

How to replace a Ray5 X/Y-axis motor:

1. Power off the machine and unplug the motor cable.
2. Loosen the X/Y-axis timing belt.
3. Remove the motor screws using a 2.5 mm hex wrench.
4. Install the new motor, ensure proper connector orientation, seat the timing belt, adjust tension, and reconnect the cable.

Why This Process Matters

The X-axis and Y-axis motors drive the precise movement of the laser head. If a motor fails or becomes misaligned, engraving accuracy is compromised, leading to uneven cuts or skipped steps. Replacing worn or damaged motors restores reliable motion and ensures professional-quality results.

Before You Start

Requirements

• Replacement motor compatible with your Ray5 model (10W, 5W, or 40W)
• 2.5 mm hex wrench
• Screwdriver set (optional for cable management)
• Clean, organized workspace
• Anti-static gloves (optional)

Precautions

• Always power off and unplug the machine before beginning.
• Handle connectors and wires carefully to avoid damage.
• Keep screws and small parts organized for easy reassembly.
• Follow official machine specifications or instructions for belt tension and motor placement.

Step-by-Step Tutorial

Note: The following steps use the Ray5 40W X-axis motor as an example. The procedure is identical for other motors and models.

Step 1: Unplug the X/Y-axis motor cable

• Action: Ensure the machine is powered off. Carefully unplug the motor cable to avoid damaging the connector or wiring.
• Expected Result: Motor is electrically disconnected and ready for removal.
• Notes: Pull from the connector, not the wires, to prevent damage.

Step 2: Loosen the X/Y-axis timing belt

• Action: Release the tension on the timing belt before removing the motor.
• Expected Result: Reduced resistance, making motor removal easier.
• Notes: This step prevents strain on the motor and mechanical components.

Step 3: Use a 2.5 mm hex wrench to loosen the four screws and remove the X/Y-axis motor

• Action: Unscrew all four mounting screws and gently detach the motor from the frame. Keep the screws in a safe place for reuse.
• Expected Result: Old motor is fully removed from the machine.
• Notes: Avoid dropping screws or misplacing them.

Step 4: Install the new motor

• Action: Place the new motor in the correct position. The X-axis motor connector should face left, and the Y-axis motor connector should face backward. Ensure the timing belt is properly seated on the coupling and adjusted to the correct tension. Reconnect the motor cable.
• Expected Result: Motor is securely installed, oriented correctly, and connected.
• Notes: Improper orientation or belt tension can cause skipping or inaccurate engraving.

Motor replacement is complete.

Common Problems and Solutions

Tips for Better Results

• Take photos of the motor area before disassembly to guide reassembly.
• Keep all screws and small parts in a labeled container.
• Test motor movement at low speed before performing a full engraving.
• Regularly clean the timing belt and coupling to maintain smooth motion.
• Always handle electrical connectors with care to prevent shorts or damage.

Frequently Asked Questions

1. Can I replace the motor on a 10W or 5W Ray5 using this tutorial?
Yes, the process is identical for X-axis or Y-axis motors across all Ray5 models.

2. How do I know if my motor needs replacement?
Symptoms include skipped steps, unusual noises, vibration, or inconsistent engraving.

3. What tools do I need for this replacement?
A 2.5 mm hex wrench is required. A screwdriver and anti-static gloves are optional.

4. Can I perform this replacement without experience?
Yes, following this step-by-step guide and safety precautions ensures a smooth replacement.

5. How should I adjust belt tension after installation?
Follow official machine specifications. The belt should be snug but not overly tight.

6. What if the motor connector is facing the wrong direction?
Reinstall the motor with the correct orientation: X-axis connector faces left, Y-axis connector faces backward.

7. How long does this replacement take?
For beginners, approximately 30–60 minutes, including disassembly, installation, and testing.

8. Can misaligned motors damage the machine?
Yes, improper alignment or tension can lead to uneven engraving and wear on components.

Final Thoughts

Replacing the X-axis or Y-axis motor on your Ray5 10W, 5W, or 40W laser engraver is a straightforward process when following proper procedures. Correct installation, orientation, and belt tension are critical for stable and precise operation. Always power off and unplug your machine before performing maintenance, and follow official specifications to ensure long-term reliability. With careful attention, motor replacement will restore smooth motion and professional-quality engraving results.

If your Ray5 display screen is damaged, unresponsive, or malfunctioning, replacing it can restore full control of the machine and ensure proper operation. Follow the steps below to safely remove the old display and install a new one.

Step-by-Step Instructions

1. Use an M5 hex wrench to loosen the screws securing the control box, then remove the control box.
Ensure the machine is powered off before starting. Carefully remove the control box to access internal components.

2. Use an M2 hex wrench to loosen the screws on the back panel of the control box and open the control box.
Remove the back panel screws and gently open the control box, keeping all screws in a safe place for reassembly.

3. Disconnect the cable from the display’s mainboard.
Carefully unplug the display cable from the mainboard. Avoid pulling on the wires directly to prevent damage.

4. Use an M2.5 hex wrench to loosen the screws on the mainboard and remove the old display screen. Install the new display screen, secure it with the original screws using the M2.5 hex wrench, and reconnect the cable.
Ensure the new screen is properly aligned before tightening. Reconnect the cable securely to ensure stable communication.

5. Close the control box, tighten the back panel screws with an M2 hex wrench, and reinstall the control box onto the machine.
Double-check that all screws are tightened and the control box is securely mounted.

6. Replacement complete.
Power on the machine and verify that the display is working correctly.

Conclusion

Replacing the display screen on your Ray5 10W or 5W helps maintain reliable machine control and a smooth user experience. Proper installation and careful handling of internal components are essential for stable operation.

If the mainboard of your Ray5 laser engraver is faulty or needs upgrading, replacing it can restore full machine functionality. The replacement method is similar for Ray5 20W and Ray5 40W models. This example uses the Ray5 40W.

Step-by-Step Instructions

1. Use an M5 hex wrench to loosen the screws securing the control box, then remove the control box.
Make sure the machine is powered off before starting. Carefully remove the control box to access the internal components.

2. Use an M2 hex wrench to loosen the screws on the back panel of the control box and open the control box.
Remove the screws and open the back panel, keeping all screws organized for reassembly.

3. Disconnect or unscrew all cables connected to the mainboard.
Carefully disconnect each cable or terminal from the mainboard. Take note of cable positions to ensure correct reconnection later.

4. Use an M2.5 hex wrench to loosen the screws securing the mainboard, remove the old mainboard, and install the new mainboard. Secure it with the original screws using the M2.5 hex wrench.
Ensure the new mainboard is properly aligned before tightening the screws to secure it in place.

5. Reconnect the original cables to their corresponding ports (tighten as needed). The bundled cables have labels for correct placement.
Refer to the cable labels and reconnect each cable to the correct port to ensure proper functionality.

6. Close the control box, tighten the back panel screws with an M2 hex wrench, and reinstall the control box onto the machine.
Make sure all components are securely fixed before closing the control box.

Conclusion

Replacing the mainboard on your Ray5 10W or 5W restores core machine control and ensures stable operation. Proper cable reconnection and secure installation are critical for correct functionality.