iQ sets the engagement strengths of the motors automatically now, but this video may be helpful when troubleshooting supermotors.
Remove the motor covers and watch the spindle shown in the videos as you change the engagement strength. Do not move the machine.
The videos show the motor repeatedly engaging and disengaging. Yours will not do this - it will lift then lower once when you change the setting.
This video shows a weak engagement strength - watch how the brass collar at the base of the spindle does not lift.
weak engagement strength
This video shows the correct movement of the brass collar. The collar should be lifted by about 1-2 millimeters at the end of the engagement phase when the engagement strength is set properly.
proper engagement strength
