The 3D Printing Module clashes against the Print Sheet during calibration or printing.
- The firmware is outdated.
- The Y axes are not assembled properly. In this case, the 3D Printing Module is likely to clash against the Print Sheet.
- The screws on the Support Platform are installed wrongly.
- The probe sensor isn't working properly.
- The probe sensor wiring is worn out.
1. Download and install the latest version of firmware from this website.
2. Check whether the Y axes are securely fitted into the grooves on the Base Plate as illustrated. If not, adjust the Y axes.
3. Check whether the screws on the Support Platform face downward as illustrated. If not, re-install all the screws on the platform.
4. If the problem persists, check whether the probe sensor is working properly.
4.1 Start auto-calibration on the Touchscreen. The 3D Printing Module will go back to its home position and then move down.
4.2 Put a palette knife to test the probe sensor as shown in this video. If the probe sensor works, the 3D Printing Module will stop moving.
The lower-left picture highlights where the probe sensor is. When the nozzle approaches the Print Sheet, red light will come out from the nozzle, as shown in the lower-right picture.
4.3 Now if the probe sensor works, then maybe it's because the sensor isn't seated right. In this case, follow the steps below to adjust the height of the probe sensor.
4.3.1 Turn off the machine and assemble the 3D Printing Module as shown in the picture below; it lets you adjust the sensor.
For purpose of troubleshooting, the way you assemble the Printing Module here is different from the one demonstrated in the Quick Start Guide. You should only do this when you adjust the probe sensor.
4.3.2 Loosen the screw of the probe sensor so that it can be adjusted.
4.3.3 Find a credit card (or anything with a height of about 1 mm). Move the module down until the nozzle tip touches the Print Sheet; then put the card under the probe sensor so that the sensor is approximately 1 mm higher than where the nozzle tip is.
4.3.4 Tighten the screw of the probe sensor.
4.3.5 Reassemble the 3D Printing Module correctly.
4.3.6 Redo calibration following the prompts on the Touchscreen. Keep the machine connected to the computer the whole time.
5. If the problem persists, check the condition of probe sensor wiring. Open the right cover of the 3D Printing Module and find the sensor wiring. Unplug it and then plug it back in. Close the cover and try again.
If you have tried all of the above steps and the problem still exists, please contact us at for help.