¶ Problem description
At the first point of automatic calibration, the screen prompts calibration failure.
¶ Possible reasons
Case 1
The machine installation position is incorrect, exceeding the range allowed by the firmware, causing the 3D printing module to fail to descend close to the heat bed.
①Y-axis installation position error.
②The installation position of the 3D printing module is incorrect.
Case 2
The first point leveling failed because the quick swap kit was not selected when the quick swap kit was installed (or the quick swap kit was selected when the quick swap kit was not installed).
Case 3
Proximity sensor failure (for example, the proximity sensor can not be triggered when it is close to steel items and has no red light).
Case 4
During the calibration process, the 3D printing module does not approach the heat bed, and the 3D printing module moves in the air (because the proximity sensor is continuously triggered).
¶ Interim measures
Try to complete the calibration process by manual calibration.
¶ Solution
Case 1
The machine installation position is incorrect, exceeding the range allowed by the firmware, causing the 3D printing module to fail to descend close to the heat bed.
Check installation location for errors.
Case 2
The first point leveling failed because the quick swap kit was not selected when the quick swap kit was installed (or the quick swap kit was selected when the quick swap kit was not installed).
Check if the machine is equipped with a quick swap kit, and then refer to the following figure to select the installation status of the quick swap kit.
Case 3
Proximity sensor failure (for example, the proximity sensor can not be triggered when it is close to steel items and has no red light).
Check if the proximity sensor is faulty: when powered on, touch the proximity sensor with a steel object to observe if the red light is on. If no red light is observed, purchase a proximity sensor replacement at the official store or contact support to replace the proximity sensor.
Case 4
During the calibration process, the 3D printing module does not approach the heat bed, and the 3D printing module moves in the air (because the proximity sensor is continuously triggered).
Replacing the proximity sensor.
¶ Related reading
How to replace the proximity sensor?
Replacing 3D Printing Module Air Passage and Proximity Sensor