Issue description

When the machine is powered on, the carriage is supposed to rest in the upper right corner after completing the homing in the order of z-, y-, and x-axis.

Please follow this troubleshooting guide to resolve the issue if:

• The carriage cannot return to the very right of the x-axis guide rail or keep moving to the left.
• The annular indicator is solid red.

• Or an error message entitled "Device homing exception" in XCS pops up, please follow this troubleshooting guide to resolve this issue.

Possible causes

1. Obstacles exist: There is an obstacle inside the machine, preventing the carriage from normal homing.
2. Abnormal limit switch: The limit switch, its cable, or its circuit on the main control board is not functioning properly.
3. Abnormal motor: The carriage motor, its cable, its driver board, or its circuit on the main control board malfunctions.

Detailed procedure

Step 1: Pre-check

1. Power off your xTool MetalFab Laser Welder and xTool MetalFab CNC Cutter.

When xTool MetalFab CNC Cutter is off, the carriage can be moved manually.

2. Ensure that the carriage can be moved to the far left and right of the machine manually.

3. Move the carriage to the center of the x-axis guide rail.

4. Plug in the power cable and turn on the machine to check whether the carriage can move automatically along the x-axis guide rail.

5. Then, resolve the issue according to different scenarios.

Step 2: Troubleshoot based on a specific scenario

Scenario 1: Carriage moving along the x-axis guide rail

If the carriage moves along the x-axis guide rail but in the wrong direction or does not stop at the target position, refer to the following troubleshooting steps.

1. Power off your xTool MetalFab Laser Welder and xTool MetalFab CNC Cutter.

2. Remove the rear plate.

3. Turn on the xTool MetalFab CNC Cutter
4. Check the X_Lim indicator while manually moving the carriage to the very left and right of the x-axis guide rail.
5. 1.   Under normal conditions, the indicator light should illuminate when the carriage reaches the rightmost position and extinguish when it moves away.

5. If the indicator behaves abnormally, power off the machine and reconnect the disconnector labeled "X_Lim".

6. Restart the machine.
7. If the issue persists, please prepare a video recording your troubleshooting process and results and contact xTool Customer Service for further assistance.

Scenario 2: Carriage NOT moving along the x-axis guide rail

If the carriage does not move along the x-axis guide rail when the machine is on, refer to the following troubleshooting steps.

1. Power off your xTool MetalFab Laser Welder and xTool MetalFab CNC Cutter.

2. Remove the rear plate.

3. Unplug and replug in the five disconnectors of the main control board and motor drive board.

4. Leave the rear plate uninstalled and turn on xTool MetalFab CNC Cutter.

5. Check whether the indicators on the motor drive board and that on the DC power supply illuminate.

6. If the issue persists, please prepare a video recording your troubleshooting process and results and contact xTool Customer Service for further assistance.

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