The belt may loosen during transportation etc., and it may not be possible to print properly. The tension of the belt is OK at the level where resistance can be confirmed by pushing the belt with your finger. ( Please compare X and Y and check if one is loose.)
Belt adjustment method of Felix Pro 2 is as follows.
· Adjustment screw in the x direction (3 mm hex screw) is located on the back side of the upper part of the adjustment . (Red circle part in the picture below) If you turn this clockwise, the belt tightens.
· Belt adjustment in y direction Turn off the power switch and remove the bed. There is an adjusting screw (3 mm hex screw) in the same way in the back handle (black plastic part) at the back. (Red circle part in the picture below) If you turn this clockwise, the belt tightens.