Laser head continually steps towards front left

[Trumps (warwick)]

Laser is Creality Falcon 2 pro.
Lenovo laptop running Win 10.
Issue is no matter where the laser module is located it steps towards front left and keeps trying to step continually hitting limit switch.
First occurred during the initial camera alignment setup. Then behaved properly for no apparent reason.
Managed to do a power cut test and then one small cut job.
Now when laser is on and connected to Lightburn it continually steps to front left.
Selecting HOME or User set Origin does not work.Disconnecting the USB cable stops the contiual stepping.
I have:

• installed the CH341 drivers, no change
• swapped USB ports and cables, no change
• disabled USB power management, no change
• disabled laptop wifi, (in case of interference) no change
• disabled laptop bluetooth, (in case of interference) no change.
• captured debug log which shows continual “ok\r\r\nok\r\r\nok…MSG:Pgm End…” strings. Log attached.
• Tried LaserGRBL but do not know how to use software yet so not a good test.
  Bottom line is laser is unusable while this behavior exists.
  Request some help or guidance on where to look next.
  LightBurnLog.txt (28.7 KB)

[Kuth (Luis Jardim)]

Did you try to disable this function?

[thelmuth (Tim Helmuth)]

Is this a new to you laser? Possibly one of your limit switches is out of adjustment or faulty.

[Kuth (Luis Jardim)]

Probably.
If he can stop inicial movement then he can adjust limit switches,

[Trumps (warwick)]

Thank you for response so far. Yes the laser is both new to me and brand new.
Yes have disabled auto home.
The behavior is different to when the device accepts the Home or Go to Origin command. When these work the movement is smooth and not step wise.
When device plays up the movement is in one direction at a time and step wise (say two steps a second) and associated with a beep every step.So if laser head is back right when the issue occurs it will move forwards over 10s of seconds with many steps and beeps.
Forgot to state I am using Lightburn V1.7.01 30 day trial version.

[dos (Daryl)]

This sounds like you have a laser pointer offset configured (in the device settings window) with coordinates for a pointer in the front left corner with respect to your laser.