The indicators stay off or turn red, door detection malfunctions, or the machine stops during operation.
Unplug the adapter before disconnecting the power switch wiring. Turn off the machine before reconnecting the Type-C cable or opening the top cover to reinsert a USB drive or TF card. Avoid lens cleaners containing ammonia or acetone and back-and-forth rubbing that could scratch the lens; keep dust out of the galvo scanner assembly.
What you see: None of the indicator lights turn on after switching on the power.
Check in this order:
Check the adapter output voltage: use a multimeter to measure whether the power adapter's output voltage is 24V (see Figure 13).

Figure 13
Check the power switch wiring: if the power adapter is functioning normally, open the top cover of the Atelier and check whether the power switch wiring is properly connected (see Figure 14).

Figure 14
Check the power switch: if the switch wiring is properly connected, unplug the adapter and disconnect the power switch wiring. Use a wire to short the switch terminals, then plug the adapter back in to see if the machine powers on. If the machine turns on after shorting, the power switch is faulty. If the problem persists, it may be a mainboard issue. Please provide the device Serial Number (see Figure 15) and a troubleshooting video to customer support for assistance. References: Atelier Power Switch Shorting Video, Atelier Mainboard Replacement Video.
Click to play video on YouTube
Click to play video on YouTube

Figure 15
Still not fixed? Contact support with the details listed in What to send support.
Related problems: Red Light at Power-On · Computer Won’t Connect
What you see: The status indicator turns red after the power switch is turned on.
Check in this order:
Confirm that the USB key is inserted: check whether the USB Key is plugged into the USB Key port on the back of Atelier. If it is, gently touch it and check whether it makes a beep sound and the status indicator turns white. If normal operation is restored by touching it, gently adjust the USB Key so that it is pressed close to the inner wall of the port. If the above measures cannot resolve the poor contact issue, please provide the device Serial Number (as shown in Figure 16) and a fault video, and send them to customer service for further handling.

Figure 16
Confirm that the enclosure door is properly closed: open the enclosure door again and then close it, and check whether the status indicator returns to normal. You can also turn off the "Door Detection" function in AtomStack Studio (PC version or mobile version), as shown in Figure 17. If the indicator returns to normal after disabling this function, it indicates a failure of the door limit switch (Hall sensor). Please provide the device Serial Number and a fault video and send them to customer service for further handling. Please refer to the Atelier Hall sensor replacement video.
Click to play video on YouTube

Figure 17
Try reflashing the firmware: if there are no abnormalities with the USB key or the door limit switch, please provide the device Serial Number to customer service to request the latest Atelier firmware and try updating it to see if the issue can be resolved.
If the above steps still cannot resolve the issue, replace the mainboard: please provide the device Serial Number, fault video, and the troubleshooting steps you have performed to customer service. For replacement, please refer to the Atelier mainboard replacement video.
Still not fixed? Contact support with the details listed in What to send support.
Related problems: Indicators Stay Off · Door Closed, Light Red · Machine Stops Suddenly
What you see: The status indicator lights red even when the enclosure door is closed.
Check in this order:
Confirm that the enclosure door is fully closed: check whether the door is being blocked by materials and cannot fully close.
Check the Hall sensor: in AtomStack Studio, go to Settings and turn off the "Door Detection" function (see Figure 31). If the status indicator changes from red to solid green after disabling this function, it indicates a Hall sensor failure. For replacement, please refer to the Atelier Hall sensor replacement video.

Figure 31
If the above steps do not resolve the red light issue: please provide a photo of the Serial Number (as shown in Figure 32) and a fault video to customer service to request the Atelier firmware for updating the machine. If the issue persists after updating the firmware, attempt a mainboard replacement. For guidance on replacing the mainboard, please refer to the Atelier mainboard replacement video.

Figure 32
Still not fixed? Contact support with the details listed in What to send support.
Related problems: Red Light at Power-On · Machine Stops Suddenly
What you see: The machine suddenly stops during operation.
Check in this order:
Test the power adapter output: use a multimeter set to DC mode to measure whether the adapter output is 24V, 3A. If the output is abnormal, please provide a test video and the device Serial Number (as shown in Figure 33) and send them to customer service for further handling.

Figure 33
Check for alarm prompts: observe whether the status indicator lights red or whether the software displays an alarm.
USB key not inserted prompt: check whether the USB key is properly inserted. Gently adjust it and see if the indicator light turns flashing green. If it flashes green, press "Start/Pause" to continue the previous engraving. If the prompt persists, please provide a fault video and the device Serial Number to customer service for further handling.
Connection lost prompt:

Figure 34
Prompt: $door/enable=On — enclosure detected as open:
Confirm that the enclosure door is fully closed: check whether the door is being blocked by materials and cannot fully close.
Check the Hall sensor: in AtomStack Studio, go to Settings and turn off the "Door Detection" function (see Figure 35). If the status indicator changes from red to solid green after disabling this function, it indicates a Hall sensor failure. For replacement, please refer to the Atelier Hall sensor replacement video.

Figure 35
If none of the above resolves the issue: attempt a mainboard replacement. Please provide the fault video, troubleshooting steps, and device Serial Number to customer service for further handling. For guidance on replacing the mainboard, refer to the Atelier mainboard replacement video.
Still not fixed? Contact support with the details listed in What to send support.
Related problems: Red Light at Power-On · Computer Won’t Connect · Door Closed, Light Red