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There are several situations in which the nozzle prints are not formed. It is necessary to check one by one.
1. It is necessary to check whether the nozzle is blocked or not.
2. Whether the nozzle gap is too large or too small
3. Check if the motor cable is damaged
4. If there is one of the above situations, it is necessary to clear the nozzle or adjust the gap size of the nozzle or replace the motor line.