Geeetech DP200 User Manual page 16

4) After the Z-axis resetting completes, manually adjust the four sides of the
printing platform and the four sides of the 2K forming screen to the parallel
position as shown in Picture (6-8), the two red virtual reference lines are parallel,
and gently press the top of the platform with your hand to make the four corners
of the platform evenly applied to the upper surface of the 2K forming screen.
5) Then use 7-word wrench to tighten the leveling stopper screws on the front side
and the right side of the platform in turn, and then use the short side of 7-word
wrench to ensure that the printing platform is fixed tightly and does not shake,
as shown in Picture (6-9), (6-10). After clicking "reset" on the touch screen, Can
twitch A5 leveling paper with obvious resistance but uniformity.
step must pay attention to the printing platform can't be high side and low
side)
6) Last, click the "Reset" button again and put back the A5 leveling paper before
the Z-axis resetting completes. After the resetting is stopped, twitch A5 leveling
paper again to see if it is in a state where the resistance is obvious and uniform
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（ Picture
6-7）
（ Picture
6-9）
（ Picture
6-8）
（ Picture
6-10）
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(Note: This