Issue Description

When this issue occurs, the laser head fails to return to the home position properly. You may see the laser head keep crashing into the structure of the machine, or it simply won't work. If the machine is connected with XCS in the meantime, you may see a pop-up notification like below.

#1 Check the X-Axis Limit Sensor

1. Please make sure to connect xTool P2/P2S through USB.
2. Open your browser and select the link that corresponds to your operating system.

• For Windows: http://201.234.3.1:8080/cnc/cmd?cmd=M110S4&force=1
• For Mac: http://201.234.4.1:8080/cnc/cmd?cmd=M110S4&force=1

3. Input the link in the address bar and press "Enter" to unlock the X-axis and Y-axis motors:
4. Remove the magnetic cover of the laser head.
5. Move the laser head left and right manually and observe whether the indicator of the Z-axis homing signal changes.
6. If the indicator does not change, it means the Z-axis adapter board is faulty. Please replace the Z-axis adapter board.

#2 Check the Limit Spacer and Sensor Probes

When this issue is associated with the limit spacer or sensor probes, you may see one or more of the symptoms listed below.

• The laser head cannot reach the far left, and the limit spacer fails to get into the probes.
• The laser head repeatedly hits the left frame of the machine for approximately ten seconds.
• The X-axis homing signal indicator does not illuminate.

To address this, follow these steps:

1. Remove the magnetic cover of the laser head.
2. Inspect the limit spacer and sensor probes for signs of deformation. Straighten them if needed.
3. Check for any objects hindering the laser head's movement, such as cable ties or cables from the fire safety set. If any are present, arrange the cables.
4. Pull the laser head manually to verify whether the limit spacer can get into the probes.

#3 Clean the X-Axis Guide Rail

1. Clean the belt, guide rails, pulleys, and fixed pulleys on both sides of the X-axis, especially the debris, dust, and other impurities. They may seriously affect the normal operation of the X-axis.

2. If the laser module collides with the device edges during processing, or if there is displacement along the X-axis when laser engraving, in addition to following the above cleaning steps, the processing speed or density should be reduced.

#4 Check the Z-Axis Adapter Cables

1. Remove the magnetic cover of the laser head.
2. Check the 6-pin connector cable as shown below for looseness and try to re-plug the cable.

#5 Check the Cable or the Motor

1. Restart xTool P2/P2S and connect it through USB.
2. Open your browser and input the provided links in the address bar and hit enter to observe if you can effectively control the movement of the laser module.

• Move the laser module 100mm to the right:
  For Windows: http://201.234.3.1:8080/cnc/cmd?cmd=G91X100F10000&force=1
  For Mac: http://201.234.4.1:8080/cnc/cmd?cmd=G91X100F10000&force=1
   
• Move the laser module 100mm to the left:
  For Windows: http://201.234.3.1:8080/cnc/cmd?cmd=G91X-100F10000&force=1
  For Mac: http://201.234.4.1:8080/cnc/cmd?cmd=G91X-100F10000&force=1

3. If the browser returns "OK" but you are unable to control the laser module, please unplug and reconnect the X-axis motor cable as shown below, then repeat the above steps for testing.
4. If the issue persists, the cable of the motor or the motor itself might be faulty and should be replaced.

#6 Check the Cables of the Z-Axis Adapter Board

1. Please check the cables in the drag chain for breakage.
2. If you have a multimeter, please follow the steps in the tutorial video to remove the casing of xTool P2/P2S, and check the electrical connectivity of each wire of the 6-pin connector cable as shown below.

3. Please refer to the article to remove the casing of xTool P2/P2S: https://support.xtool.com/article/949
4. If the cable is broken or damaged, please contact the after-sales team for cable parts and follow the link below to have the cable replaced.
   https://support.xtool.com/article/833

If None of the Above Works

If you have followed the instructions above and the issue is still not resolved, please read the article in the link below, collect the troubleshooting steps you have taken, and contact xTool tech support for further advice.

https://support.xtool.com/article/844