Troubleshoot Z-Axis Homing Failure for xTool P2

Article author
xTool Customer Service
  • Updated

Issue Description

When this issue occurs, the laser head won't go back to the home position properly. You will probably see the laser head jitters or keeps going up or down. If the machine is connected with XCS in the meantime, you may see a pop-up notification like below.

#1 Check the Lead Screw in the Laser Head

  1. Please remove the protective cover of the laser head, and check whether there is any foreign object on the lead screw.
  2. If so, please clean it up and move the laser head up and down to observe whether the laser head can move smoothly.


#2 Check the Z-Axis Limit Sensor

  1. Power on P2 and connect it to the computer with a USB cable.
  2. Open your browser and input this in the address bar and hit enter to unlock Y-axis and Z-axis motors:
  3. Move the laser head up and down manually and observe whether the indicator of the Z-axis homing signal changes.
  4. If the indicator does not change, it means the Z-axis adapter board is faulty. Please replace the Z-axis adapter board.

#3 Check the Connection Cable of the Laser Head

Unplug and re-plug the cables as shown and check whether they are loose or broken.

#4 Check the Z-Axis Lead Screw Motor

  1. Reboot P2 and connect it to the computer with a USB cable.
  2. Open your browser and input and hit enter on the following links in the address bar in succession:
  3. If the laser head fails to lift properly or is stuck, the motor or motor connection cable may be faulty, please replace it.

#5: Check the Connection Cable of the Z-Axis Adapter Board

  1. Check the cables in the drag chain for breakage;
  2. If you have a multimeter, please follow the step in the tutorial video of removing the casing of P2, and check the electric connectivity of these cables.
  3. Please refer to the article to remove the casing of P2:

  1. 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.


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.

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