# FAQ **URL:** https://forum.cloudray.com/c/laser-marking/faq/16.md [Latest](https://forum.cloudray.com/latest.md) · [Categories](https://forum.cloudray.com/categories.md) --- ## [About the FAQ category](https://forum.cloudray.com/t/about-the-faq-category/32)
**Author:** [@Rayner](https://forum.cloudray.com/u/Rayner)\ **Replies:** 0
--- ## [The laser has a temperature alarm](https://forum.cloudray.com/t/the-laser-has-a-temperature-alarm/303)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 21, 2021, 1:17am UTC](https://forum.cloudray.com/t/the-laser-has-a-temperature-alarm/303 "2021-04-21T01:17:38Z")
1.Problem description:Raycus RFL-P20QS. After working for a few minutes, a temperature alarm error occurs, and the ambient temperature is 18-23 degrees. 2.Analysis:That should be caused by the poor grounding of the lase… --- ## [The marking machine needs to use the rotating shaft to mark the ring. Is the diameter of the rotating shaft larger than the diameter of the ring?](https://forum.cloudray.com/t/the-marking-machine-needs-to-use-the-rotating-shaft-to-mark-the-ring-is-the-diameter-of-the-rotating-shaft-larger-than-the-diameter-of-the-ring/301)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:47am UTC](https://forum.cloudray.com/t/the-marking-machine-needs-to-use-the-rotating-shaft-to-mark-the-ring-is-the-diameter-of-the-rotating-shaft-larger-than-the-diameter-of-the-ring/301 "2021-04-20T09:47:55Z")
No, the ring should be fixed from the inside, so the diameter of the shaft should be smaller than the diameter of the ring. --- ## [Machine selection problems in the diamond cutting machine and vision-based diamond analyzer industry](https://forum.cloudray.com/t/machine-selection-problems-in-the-diamond-cutting-machine-and-vision-based-diamond-analyzer-industry/300)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:45am UTC](https://forum.cloudray.com/t/machine-selection-problems-in-the-diamond-cutting-machine-and-vision-based-diamond-analyzer-industry/300 "2021-04-20T09:45:04Z")
1.Problem description:Used in the diamond cutting machine and vision-based diamond analysis machine industry. The machine used is a 3D printer. Can 100W power supply &100W laser tube & chiller & galvanometer be used on … --- ## [The difference between P100mx and p100q raycus laser](https://forum.cloudray.com/t/the-difference-between-p100mx-and-p100q-raycus-laser/299)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:40am UTC](https://forum.cloudray.com/t/the-difference-between-p100mx-and-p100q-raycus-laser/299 "2021-04-20T09:40:20Z")
1.Problem description:What is the difference between P100mx and p100q raycus lasers, these two with or without red light. 2.Solution: Raycus lasers can be optionally equipped with red light. --- ## [No rotating shaft, if you want to add a rotating shaft, how to connect it](https://forum.cloudray.com/t/no-rotating-shaft-if-you-want-to-add-a-rotating-shaft-how-to-connect-it/296)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:20am UTC](https://forum.cloudray.com/t/no-rotating-shaft-if-you-want-to-add-a-rotating-shaft-how-to-connect-it/296 "2021-04-20T09:20:52Z")
1.Problem description: 2.Solution: (1). Need to connect the driver to 24V switching power supply (V+ to 24V+, V- to 24V-) (2). The rotation axis signal control wires (red, yellow, green) of the main board are reserv… --- ## [Optical fiber marking machine LiteMarker, the problem in the picture appears when marking](https://forum.cloudray.com/t/optical-fiber-marking-machine-litemarker-the-problem-in-the-picture-appears-when-marking/295)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:17am UTC](https://forum.cloudray.com/t/optical-fiber-marking-machine-litemarker-the-problem-in-the-picture-appears-when-marking/295 "2021-04-20T09:17:24Z")
1.Problem description: 2.Solution:There is a gap in the printed picture, adjust the light-off delay. --- ## [The optical fiber marking machine has the problem as shown in the figure, how to solve it](https://forum.cloudray.com/t/the-optical-fiber-marking-machine-has-the-problem-as-shown-in-the-figure-how-to-solve-it/294)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:13am UTC](https://forum.cloudray.com/t/the-optical-fiber-marking-machine-has-the-problem-as-shown-in-the-figure-how-to-solve-it/294 "2021-04-20T09:13:46Z")
1.Problem description: 2.Solution:There are uncompressed files in the USB flash drive. Re-decompress and check. It is recommended to close the computer housekeeper and anti-virus software. --- ## [EM-Smart laser marking machine cannot install the driver](https://forum.cloudray.com/t/em-smart-laser-marking-machine-cannot-install-the-driver/293)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 9:07am UTC](https://forum.cloudray.com/t/em-smart-laser-marking-machine-cannot-install-the-driver/293 "2021-04-20T09:07:12Z")
1.Problem description:EM-SMART machine cannot use USB to download the driver. Win10 system detects unknown driver, but error code 43 is also displayed. 2.Solution:When installing the driver, the device must be turned on… --- ## [The MAX 50W fiber laser does not emit light](https://forum.cloudray.com/t/the-max-50w-fiber-laser-does-not-emit-light/291)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 8:38am UTC](https://forum.cloudray.com/t/the-max-50w-fiber-laser-does-not-emit-light/291 "2021-04-20T08:38:51Z")
1.Problem description:The MAX 50W fiber laser does not emit light. What is the reason? At present, the green LED light of the device is on and the power is on, and the red LED indicator is on. 2.Analysis:"(1) Check whet… --- ## [The machine does not have enough space to use the rotating shaft](https://forum.cloudray.com/t/the-machine-does-not-have-enough-space-to-use-the-rotating-shaft/290)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 20, 2021, 1:21am UTC](https://forum.cloudray.com/t/the-machine-does-not-have-enough-space-to-use-the-rotating-shaft/290 "2021-04-20T01:21:48Z")
1.Problem description:The customer’s machine is 50W and the working area is 20×12". They bought our 2-way roller rotating shaft, but the machine does not have enough space to use the rotating shaft. 2.Solution:It depend… --- ## [30W split marking machine, the LED light on the machine does not light up, is there a replacement?](https://forum.cloudray.com/t/30w-split-marking-machine-the-led-light-on-the-machine-does-not-light-up-is-there-a-replacement/289)
**Author:** [@Technician](https://forum.cloudray.com/u/Technician)\ **Replies:** 0\ **Last updated:** [April 19, 2021, 9:54am UTC](https://forum.cloudray.com/t/30w-split-marking-machine-the-led-light-on-the-machine-does-not-light-up-is-there-a-replacement/289 "2021-04-19T09:54:42Z")
1.Solution::You can directly use the internal red light to focus, but this requires the power supply to have a 24v port. If the power supply does not have a 24V port, you can connect an external 24v power adapter, and …