In terms of moving lights, means cycling power. Off for 15 seconds or longer, then ON. This forces all functions of a moving light to reset and re-calibrate. Often a "lamp ON" command will need to be sent from the console to the fixture after a hard-reset, and some fixtures without hot restrike must first be cooled completely, for five to ten minutes, before the lamp can be re-struck.
See also "soft-reset."
See also "soft-reset."