¶ 1. Phenomenon Description
The print job freezes right at the start
¶ 2. Cause analysis
- Deformation of the lead screw thread prevents vertical movement.
- Resin on the lead screw causes solidification and sticking.
- The coupler screw is loose, causing the lead screw to fail to rotate.
- The material tray and the forming platform are solidified into one, making it impossible to pull up.
- Poor motor wire contact results in no action command execution.
¶ 3. Troubleshooting
- After the machine is powered off, confirm whether the lead screw can be manually rotated (manually rotate the upper part of the lead screw clockwise, as the lead screw is slippery, it is best to wrap it with a tissue to increase friction). If the lead screw cannot be rotated, you can unscrew all the build platform nuts and filament tray screws, and then manually drag the filament tray and print platform out. Go to the print page, randomly choose an existing print model, set the motor speed to 1mm/s in the settings. After setting, click print without the filament tray and build platform to let the machine print empty, to see if the motor raises and lowers normally. If the motor's empty lift is normal, clean the bottom, inside of the filament tray, build platform, and the resin residue on the surface of the print screen (clean with alcohol), and then reprint (do not overfill the resin).
- When clicking on 'Home', pay attention to whether there is sound from the motor. If there is, the motor is normal. If there is no sound, check the motor cable. If the terminal of the cable is normally re-plugged, then the motor is damaged.
- Check whether the coupler screws are loose, causing the motor to idle.
- Test by replacing the firmware.
- If all of the above troubleshooting still doesn't work, you can disassemble the three screws marked in the picture, and then individually check if the brass nut, arm rail, and lead screw can rotate independently. The one that can't rotate is the problem.
