January 23, 2013 at 1:33 pm #21146
Yes, the power LED and direction LEDs will be lit if the board is receiving power from either the 9 V power supply or (if that is not connected) USB.
If the steppers are humming or energized (resisting motion), then the 9V power is indeed reaching the board. That’s by far the best indicator.
Are you receiving any error messages within Inkscape?