Alfawise U30 Pro, Operating Instruction

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Question 5: When the machine is leveling, the nozzle moves to
the left, it can be leveled normally. When the nozzle moves to
the right, it is found that the distance between the nozzle and
the heated bed are very far or very close. If the spring is
adjusted to the extreme position, it still cannot be leveled.
What should I do?
If this happens, the X-axis beam is generally loose. At this time, the
hex socket on the right side of the machine can be adjusted with a
wrench to adjust the tightness.