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

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.

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Possible Causes

The system fails (Re-update the firmware, reset to factory, or reflash RK board.) The optical path(OPA) is misaligned. The power rate and speed are set incorrectly in the software. The laser tube has declined. The laser power supply (Laser PSU) is malfunctioning. The door sensor is malfunctioning. (Less likely) The back cover sensor is malfunctioning. (Less likely) The rear work LED light is malfunctioning. (Less likely)

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Tools

Phillips screwdriver Double-sided tape Pen or pencil (Optional - Depending on test result) Magnet x2 (Optional) Rubber gloves (Optional - Depending on test result)

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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

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Step 1.1

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

• No laser output at low power rates of around 10%.
  
   

 

• The laser output is too strong at low power rates. (The Engraving result is too dark or becomes cutting, etc.)
  
   

Determine your result and the next action to take:

Yes, my machine has a similar behavior in one of the descriptions above >> Power Curve Adjustment >> After adjusting, if the problem persists, please go to Step 2

No, my machine does not have the mentioned behaviors >> Step 2

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Step 2

Make sure the power rate and speed settings are correct in the software.

 

Determine your result and the next action to take:

Yes, the settings are correct >> Step 2.1

No, the settings are not correct >> Change the settings >> After changing the settings, if the problem persists, go to Step 2.1

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Step 2.1

Double your power rate settings, start the task, and see if the laser outputs.
(For example, if your power rate is 15% originally, raise it to 30% and start the task.)

 

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

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Step 3

Turn off the machine.
Open the back lid and place a new double-layer tape on the first mirror.
After placing the tape, please go to Step 3.1.

• Use a screwdriver to unscrew the screws at the back of the machine, and the back cover can be opened afterward.
  
  
  
   
• Place the tape on the red light emitter to have an angle of 90 degrees against the beam.
  
  
  
   
• Close the back cover.
  

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Step 3.1

Make 5 pulses and check if the tape has a burnt mark on it.
(Please refer to the examples to determine the result of the tape.)

A. Turn on the machine.
B. Close the lid.
C. Enter Maintain mode and wait til the homing process is done.
     (Make sure the door, back cover, and bottom icons are closed, or you won't be able to make a pulse.)
D. Find the Pulse button.
E. One press = one pulse, two presses = two pulses, and so on.
F. Check the tape
⚠︎ Please always make pulses when the door lid is closed.

 

Tape Result Examples

Good Example - Round and Strong	Bad Example - Weak, Hollow, or Not Round

 

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 3.2

No burnt mark at all >> Step 3.2

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Step 3.2

• Use a new tape on the red light emitter, as in Step 3.

 

• Please set the power rate to 0% for safety purposes to ensure no pulses during your testing.

  
  

 

• The door sensor is embedded in the chassis LED lights. Please see the video below to find it.
  (This was shot with a HEXA, but its structure is the same as Beambox 2.)

 

• The door sensor will have two LED lights in red, and they will always be ON.
  (This was shot with a HEXA, but its structure is the same as Beambox 2.)
  
  

 

• Place the cone spacers (magnets) close to both LED lights. The light should be "brighter" when it detects a magnet. When both LEDs detect magnets at the same time, a door-closed signal will be delivered to the system, and the icon on the panel will be changed.
  (This was shot with a HEXA, but its structure is the same as Beambox 2.)
  

 

• Once you have put the magnets in place, please close the door.
  

 

• Change the power rate setting back to %100, make sure the icon is closed,
  and then make 5 pulses. (Please refer to the examples to determine the result of the tape.)
  

 

Determine your result and the next action to take:

Yes, it has a burn mark, and the result is good >> Contact Customer Service Possible Cause: The door sensor is faulty. the magnet on the door is not strong enough. (Less likely)

It has a burn mark, but the result is bad >> Step 3.3

No burnt mark at all >> Step 3.3

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Step 3.3

• Use a new tape on the red light emitter, as in Step 3.

 

• Please set the power rate to 0% for safety purposes to ensure no pulses during your testing.

  
  

 

• Open the back cover to find the back cover sensor.

 

• The back cover sensor will have two LED lights in red, and they will always be ON.
  
   
• Place two external magnets close to both LED lights. The light should be "brighter" when it detects a magnet. When both LEDs detect magnets simultaneously, a door-closed signal will be delivered to the system, and the icon on the panel will be changed.
  
  

 

• After placing the magnets, close the back cover.
  

 

• Change the power rate setting back to %100, make sure the icon is closed,
  and then make 5 pulses. (Please refer to the examples to determine the result of the tape.)
  

Determine your result and the next action to take:

Yes, it has a burn mark, and the result is good >> Contact Customer Service Possible Cause: The back cover sensor is faulty. The magnet on the door is not strong enough. (Less likely)   The rear work LED light is faulty. (Less likely)

It has a burn mark, but the result is bad >> Step 6

No burnt mark at all >> Step 4

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Step 4

• Turn off the machine.
  Open the side cover by unscrewing the screw.
  
  
   
• Check if the PSU has the jumper installed.
  

Determine your result and the next action to take:

Yes, the jumper is installed >> Step 4.1

No, the jumper is missing >>  If you're replacing the PSU, you can remove the jumper from the old one and install it on the new one. (Demonstration) If your machine does not have it and you don't have any spare, please contact cucsomter service.

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Step 4.1

• Unplug the laser control cable on the laser power supply.
  (Refer to the diagram if your PCB board is not the same as the photo.)
  
  
  
   
• After unplugging the cable, go to Step 4.2.

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Step 4.2

• Open the back cover and place a tape on the red light emitter to have an angle of 90 degrees against the beam.
  
  
  
   
• Close the back cover.
  

Please wear rubber gloves before the next action.

• Turn on the machine. Press the laser force button twice or hold it for 1-2 seconds with a pen or pencil and check for laser output on the tape.
  (Please refer to the examples to determine the result of the tape.)
   
• Check the result on the first mirror.
  (Please refer to the examples to determine the result of the tape.)
  

Determine your result and the next action to take:

Yes, it has a burn mark, and the result is good >> Step 5

It has a burn mark, but the result is bad >> Contact Customer Service Possible Cause: Your laser tube has completely declined and needs replacement.

No burnt mark at all >> Contact Customer Service Possible Cause: The laser power supply (PSU) is having a problem and needs a replacement The laser tube is having a problem and needs a replacement

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Step 5

• Replug the laser control cable

 

• Turn on the machine. Reset the machine to the factory.
  (Main Page > Machine > Next page > Reset to Factory > Yes)
  
   

 

• Update the Firmware to the latest. Please refer to the link below.
  Beambox 2 - Firmware Update Guide

 

• After the update, please go to Step 5.1.

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Step 5.1

Use a new 2-layer tape and make 5 pulses to see if the tape has a burn mark.
(Please refer to the examples to determine the result of the tape.)

 

Determine your result and the next action to take:

Yes, it has a burn mark, and the result is good >> Problem Solved Possible Cause: Firmware Issue

It has a burn mark, but the result is bad >> Step 6

No burnt mark at all >> Contact Customer Service Possible Cause: The laser control cable is faulty The mainboard is faulty

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Step 6

• Use a new 2-layer tape and put it on the first mirror.
   
• Raise the power rate to 150% and make 5 pulses to see if the burnt mark becomes stronger.
  (Please refer to the examples to determine the result of the tape.)
  

 

Determine your result and the next action to take:

Yes, it has a burn mark, and the result is good >> 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.

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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.

 

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