If your LaserPecker LP4 does not emit a laser during preview or engraving, follow the steps below. Always observe standard laser safety procedures during testing, even if no laser beam is visible.
1. Check the lens
A plastic protective cover is installed over the lens during transportation. Make sure this cover has been removed before using the LP4. Failure to remove the cover will prevent laser output.
2. Check the focal length
Incorrect focusing may result in insufficient laser energy for engraving.
The standard focal length of the LP4 is 150 mm. However, slight variations may exist between individual lenses. For optimal engraving results, we recommend testing and fine-tuning the focal length for your specific machine.
Set the focal length to 150 mm, then adjust the height slightly (+/–) until the correct focus distance is achieved.
Click here for more information about LP4 laser focusing.
3. Check the laser source
The LP4 is equipped with two laser sources:
- 450 nm blue diode laser
- 1064 nm infrared laser
Make sure the correct laser type is selected for your material. You can switch between laser sources by swiping left or right on the device’s built-in screen, and by checking the settings in the LDS app or LDS software. Ensure that the selected laser type matches on both the device and the software.
450 nm Blue Diode Laser:
When switched to Preview mode, a visible blue laser beam should be projected onto the working surface. If no visible beam appears after completing Steps 1 and 2, please contact LaserPecker Technical Support Team at support@laserpecker.com.
1064 nm Infrared Laser:
The 1064 nm infrared laser beam is invisible during operation and is primarily used for engraving metals and certain plastics. This is normal behavior.
Ensure that the selected material is compatible with the infrared laser. If engraving results are still unsatisfactory, try increasing the engraving parameters and test again.
Tips
(1) For materials such as wood, paper, bamboo, food, and genuine leather, use the 450 nm laser. You can watch a demonstration here.
(2) For metals and plastics, use the 1064 nm laser. A demonstration is available here.
4. Check the Engraving Mode Settings
Please confirm whether the "Picture" mode is currently selected. In this mode, the device will not fire a laser in the transparent or solid white background areas in the image.
If the background area is too large: Use the "Crop" function in the software to reduce the canvas size and minimize non-processing areas.
Troubleshoot file issues: It is recommended to first try engraving with the built-in Clipart in the software to verify whether the laser itself is working properly.
5. Observe the Machine Indicator Light Status
During normal engraving, the device's indicator light should display a color-gradient breathing effect. If the indicator behaves abnormally (e.g., steady on, flashing, off, or shows unusual colors), it may indicate a device malfunction.
Reporting a malfunction: Please take a clear video showing the indicator light’s behavior and send it to support@laserpecker.com. Our technical support team will provide further guidance.
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