Nozzle calibration/alignment failed

You may meet following error when doing nozzle calibration,

Error: nozzle temperature too high/Calibration failed
Or there is abnormal sound several times when the platform rises to the nozzle and no error reported.

Following possibilities for your reference,

1. Nozzle temperature is high during calibration or height aligning after the nozzle extruded 

• Wait for the nozzle temperature to drop below 80°C

2. Height aligning cable damaged  

• Unplug the height aligning cable connecting the height aligning assembly

3. Short circuit or damage to height aligning PCB board  

• Remove the height aligning assembly and replace the height aligning PCB board

4. Steering gear is not powered  

• Remove and replace the steering gear assembly

5. Mainboard damaged  

• Turn off the power and replace the mainboard

6. nozzle adapter cable is broken

• Remove and replace the nozzle adapter cable