The touch screen displays error code 1102.
The grating is obstructed by foreign objects.
The servomotor is defective.
The servomotor detection board is defective.


3. Print the model and check whether the grating can be closed during the printing. The picture below shows the normal situation.

If the grating can be closed normally, refer to Step 1 for further troubleshooting.
If the grating cannot be closed normally, refer to Step 2 and Step 3 for further troubleshooting.













Turn the power switch OFF (symbol "〇") and unplug the power supply cable.
Pull the grating up and down manually and check whether the grating can be opened and closed normally.

If the grating cannot be opened and closed normally, check whether the grating is obstructed by foreign objects and clean the objects.
If the grating can be opened and closed normally, refer to Step 3 for further troubleshooting.
Turn the power switch OFF (symbol "〇") and unplug the power supply cable.
Re-plug the servomotor adapter cable and the servomotor cable connected to the motherboard.

