Revolution upon power up does not attempt to calibrate, and the Yellow and Green LED's light up in a non flashing state.
MCC is missing software, reload MCC software. To load software, use a USB to DMX whip 5000A1039 and Updaterator. If 2 attempts at loading MCC software fail to cure the issue, the MCC has lost it's Boot code which is loadable only at the factory. A new MCC card must be ordered for replacement.