LIGHT STOP to turn off the light.
LIGHT LIGHT (or LIGHT GO) to turn on the light, full power.
LIGHT plus a NUMBER, to turn on the light at a certain intensity.
You can program that intensity, by doing LIGHT, LIST, SETUP... you need to download the user guide to see exactly.
You can find a version of the LC2 user guide here:
http://www.bang-olufsen.com/user-guides?cat=BeoLink&prodid=106&typeid=1
They work approximately the same. Except that for the LC1 you need to key in a number before you can change the intensity by using the UP and DOWN.
p.