Why the "Origin" button of LCD panel not working?
Reasons:
1. Wrong starting point is set in software
Solution:
select current position as starting point in softwares.
RDWorks:
Locate on the bottom left corner, the option of "Position" please select to Current position.

Lightburn:
Locate on the bottom left corner, the option of " Start from", please select to current position. 

2. Origin setting is not proper on LCD panel
Solution:
Open origin setting windows: Z/U or Menu button>>origin set+.
Make sure the "Multiple Origins Enable" is not selected, like below.

End.
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