Overview:

This guide helps troubleshoot homing and return-to-position errors on the M5C printer.

Investigation Process:

1. Check XYZ Axis Movement:
   1. Using the APP, return the printer to the home position. Check if the X, Y, and Z axes can move normally. If they do, you can exclude motor, motor line, and cable problems.
   2. Ensure the firmware version is correct. If it is not, contact us for assistance.
2. Troubleshooting Specific Abnormalities:

1. X-Axis Movement Issues:
   • Foreign Object Blockage:
     • Check for and remove any foreign objects blocking the V-wheel path.
   • Belt Tightness:
     • Check and adjust the X-axis timing belt if necessary. Follow this guide: How to Adjust the Belt of the X and Y Axis for the M5C Printer.
   • Nozzle Assembly Movement:
     • Ensure the nozzle assembly is not shaking excessively. Check for loose V-wheels or foreign objects in the V-wheel grooves. Adjust using this guide: How to Adjust the V-Wheel of the X and Y Axis for the M5C Printer.
   • Component Check:
     • Verify that recently replaced parts (hot end, nozzle) are installed correctly and not causing issues.

2. Y-Axis Movement Issues:
   • Foreign Object Blockage:
     • Ensure there are no obstructions within the machine's range of motion. Refer to this guide: Recommended Location to Set Up the M5C Printer.
   • Assembly Movement:
     • Check for excessive shaking of the hotbed assembly. Inspect and adjust the Y-axis V-wheels if necessary: How to Adjust the V-Wheel of the X and Y Axis for the M5C Printer.
   • Belt Tightness:
     • Ensure the Y-axis timing belt is properly tensioned. Adjust it using this guide: How to Adjust the Belt of the X and Y Axis for the M5C Printer.

3. Z-Axis Movement Issues:
   • Lead Screw Rotation:
     • Check if both sides of the lead screw rotate. If they do not:
       • Ensure the fixing screws at the lead screw and coupling are tight. Refer to this guide: How to Fix Loose Wires for the M5C Printer.
       • If the motor does not rotate, the motor may be faulty. Contact after-sales support for assistance.

4. XYZ Axis Homing Issues:
   • Strain Gauge Functionality:
     • If the Z-axis fails to home properly and the nozzle presses down with abnormal noise, the strain gauge may not be working correctly. Power off the device, re-plug the TYPE-C cables and retry the homing process.
   • Nozzle Lift Issues:
     • If the nozzle lifts without touching the PEI panel or lifts too early, the strain gauge threshold may be too low. Update the firmware to resolve this issue.

If these steps do not resolve the issue, please contact us at us.