This is standard procedure.
The machine - from off to on state - needs to find home or it wont know where it is.
I turned the device on unplugged from usb and the issue still persists when connected to usb.
Still -600
Could it be possible that you send me a few things for a easier diagnostics
a) Could you provide images of your wiring points
1- Motherboard
2- Both stepper motors
3- Both limit switches
4- Both X and L labeled connectors
b) Could you move head to centre, power on your ORTUR, and using your phone record the 10 seconds it takes for the machine to home please. This way I can see and hear it
c) Could you take 3 images of your belts as machine is idle
The forum won’t let me upload a video
Sent the file
Is the limit switch upside down in picture #1 of post:
When I received the device the limit switch didn’t match the picture or install video, so I move it to the top of the plate to match
The switch shouldnt matter orientation as lon gas the wiring is correct
Now i have 2 questions
a) is your X stepper connected (right side stepper)
if it is, can you unplug the X limit switch, to confirm if by any chance it might be faulty and is istantly reporting “touched” to the controller
I cant see the X motor connection on the images above, maybe you can double check
AS X requires 2 connections. the X extension cable on the left of the machine but also connect the cable to the motor itself.
I made my comment because it looked like the trip arm is not in the path of the gantry.
Yes i get that. The video is self evident no motion on X, by you dont have access to it 
You have to set the offset because LightBurn wants positive workspace numbers
https://lightburnsoftware.github.io/NewDocs/CommonGrblSetups.html
In your case should be G10 L2 P1 X-600 Y-600
Not the case, machine isnt homing.
Oh sorry, I had read that he was able to perform the homing in the bottom left corner
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ITs cool no worries 
So my right side X cable was not plugged in. Duh! Thank you. So the home X and Y seems good. But it won’t fire a project.