In the event you’re referring to the first 2 trigs, on DT/DN in test mode, the behavior of trig 1 illuminates the screen with all pixels on (to check for dead spots), trig 2 is all pixels dark (to look for stuck pixel errors.)
If you are referring to the page LED lights, on the digi devices the only trig which causes all 4 page LED to illuminate is trig 3 which tests all RED (ON). Not certain for OT behavior in regard to page colors and illumination test.
In regard to the video I have no clue, the behavior looks weird, but I don’t know enough about the OT to give an expert opinion. Is the pattern length set to 64 bars so that access to all 4 pages should be available when pressing the page button?