First, provide your board with logic ( 5V ) power.

The easiest way to do this, is by plugging the USB cable into your computer, and into the Smoothieboard.

Next, there is a series of LEDs on your board, near the center.

They are labelled VBB ( red ), 3.3V ( orange ), and 1 2 3 and 4 ( all green ).

Answer Yes if any of the green LEDs are ON, or blinking, otherwise answer No