This is the method for adjusting the belt. The printer utilizes the adaptive adjustment function of the belt tensioner. Each belt tensioner has a set screw on the back. Please loosen all the set screws and automatically adjust the belt tension by moving the print head according to the video below (please move the print head in the direction shown in the video and tighten the screws after adjustment). Please refer to the photos and videos in the link below.
Please loosen all the fixing screws.

Belt adjustment.
