Skip to main content

5-11 No Laser Beam Output / The Laser Won't Fire / No Laser Pulse

FLUX Support Team
  • Updated

Description

The reason for a laser failing to output can be complex. It could be caused by a declined laser tube, a broken laser power supply(Laser PSU), or system failure...etc.

Please follow the steps below to troubleshoot the issue.

Possible Causes

  1. The system fails (Re-update the firmware)
  2. The optical path(OPA) is misaligned.
  3. The power rate and speed are set incorrectly in the software.
  4. The laser tube has declined.
  5. The laser power supply (Laser PSU) is malfunctioning.
  6. The door sensor is malfunctioning. (Less likely)
  7. The back cover sensor is malfunctioning. (Less likely)
  8. The rear work LED light is malfunctioning. (Less likely)

Tools

  1. T8 torx screwdriver
  2. Double-sided tape
  3. Pen or pencil (Optional - Depending on test result)
  4. Rubber gloves (Optional - Depending on test result)

Step 1

Please check the video below and determine if the symptom is similar to your machine.
(If there is no laser output when the machine is running and making a loud cracking sound,
it indicates the tube is broken.)


Determine your result and the next action to take:

  • Yes, my machine has a similar symptom or sound >> Stop using the machine and Contact Customer Service 
    • Possible Cause:
      • The laser tube is broken and must be replaced.
  • No, my machine does not have a cracking sound >> Step 1.1

Step 1.1

Please check if your application is similar to the following descriptions.

  • No laser output at low power rates of around or below 10%.
  • The laser output is too strong at low power rates. (The Engraving result is too dark or becomes cutting, etc.)
336914952_952405325766107_2008986608548786075_n.jpg


Determine your result and the next action to take:

  • Yes, my machine has a similar behavior in one of the descriptions above >> Step 1.2
  • No, my machine does not have the mentioned behaviors >> Step 2

Step 1.2

  • Please refer to the link below to adjust the power curve.
    [Power Curve Adjustment (beamo II)]

     
  • After the adjustment, please try again to see if your problem has been solved.
    336914952_952405325766107_2008986608548786075_n.jpg

Determine your result and the next action to take:

  • Yes, the problem has been solved.
  • No, the problem is still there >> Step 2

Step 2

  • Open the example file of the focus prob.
    Double your power rate settings, start the task, and see if the laser outputs.
    (For example, if your power rate is 20% originally, raise it to 40% and start the task.)
  • Run the task and see if the laser outputs.

     

Determine your result and the next action to take:

  • Yes, the laser outputs >> Your machine can still work.
    • Suggestion: Raise the power rate and lower the speed in every task until the tube declines completely
    • Possible Cause:
      • Your laser tube has slightly declined
  • No, the laser does not output >> Step 3

Step 3

  • Remove the back metal cover to find the first mirror.

  • Place the tape on the 1st mirror to have an angle of 90 degrees against the beam.

  • Place the back cover back and make 5 pulses.
    (You don't have to tighten the screws as long as you can make a pulse.)

Tape Result Examples

Good Example - Round and Strong Bad Example - Weak, Hollow, or Not Round
Screenshot 2024-05-17 at 11.45.12 AM.png 2A7UkBxyMHmmnZPZZ6GhVDYn3cRinoq2RQ.png
Screenshot 2024-05-17 at 11.44.44 AM.png 323857.jpg

Determine your result and the next action to take:

  • Yes, it has a burn mark, and the result is good >> Laser output has no problem >> 
    Please Check OPA
  • It has a burn mark, but the result is bad >> Step 5

Step 3.1

Update the Firmware to a stable version. Please refer to the link below.
4-7 Firmware Update
 Screenshot 2024-05-03 at 2.48.08 PM.png

  • After the update, please make 5 pulses on the first mirror to see if it has any marks.

Determine your result and the next action to take:

  • Yes, it has a burnt mark (No matter good or bad.) >> Step 3.2
  • No burnt mark at all >> Step 4

Step 3.2

  • Place the back cover back.
    (You can only tighten one or two screws for the back cover as long as the back cover icon is closed.)
  • Run the example file in Beam Studio and see if the laser outputs.
    Step

Determine your result and the next action to take:

  • Yes, the laser outputs >> Problem Solved.
    • Possible Cause:
      • System failed.
  • No, the laser does not output >> Step 2

Step 4

  • Turn off the machine.
    Remove the front metal cover. (T8 torx screw * 10 pcs.)

  • Unplug the laser control cable. (Machine off.)
    (Please refer to the diagram if your machine has a different setup than the photos below.)
  • Find the laser force button on the laser power supply.

  • Close the back cover. Turn on the machine and quickly press the button for 1 time for 0.5-1 second and see if the tape on the first mirror has any marks.


Determine your result and the next action to take:

  • Yes, it has a burnt mark and the result is good >>  Contact Customer Service
    • Possible Cause:
      • The laser control cable is down and needs to be replaced.
      • The mainboard is down and needs to be replaced.
  • Yes, it has a burnt, but the result looks weak or not round >> Contact Customer Service
    • Possible Cause:
      • The laser tube is dead and needs to be replaced.
  • No burnt mark at all >> Contact Customer Service
    • Possible Cause:
      • The laser tube is down and needs to be replaced.
      • The laser power supply is down and needs to be replaced.

Step 5

  • Raise the power rate to 150% in the control mode.

  • Make 5 pulses to see if the burnt mark becomes stronger.
    (Please use a new 2-layer tape if the current one has a mark.)
    (Please refer to the examples to determine the result of the tape.)

Determine your result and the next action to take:

  • Yes, the laser outputs >> Your machine can still work.
    • Suggestion: Raise the power rate and lower the speed in every task until the tube declines completely
    • Possible Cause:
      • Your laser tube has slightly declined
  • It has a burn mark, but the result is bad >> Contact Customer Service
    • Possible Cause:
      • Your laser tube has completely declined and needs to be changed.

Contact Customer Support

Please follow the instructions in the link below to properly report an issue to your local reseller or FLUX support. [Contact Customer Service]

*The collected information, such as photos or videos that show the problem of your machine in this article,e will be necessary to be shared with the reseller or FLUX Support.

#END

 

Related articles

Comments

0 comments

Please sign in to leave a comment.