Exceptional software failure.

Reboot the projector.

There is no Dolby 3D color wheel installed in the projector but the flag for Dolby 3D is set in the Communicator software.

Either install the Dolby 3D color wheel unit or disable the Dolby 3D option in the Communicator software.

The Dolby 3D color wheel unit is disconnected from the Formatting Interface Board.

Check the connection between the Dolby 3D color wheel unit and the Signal backplane. Replace wire unit if damaged.

Malfunction electronic board of the Dolby 3D color wheel unit.

The color wheel can be rotated by hand (spinning motor OK) and be moved back and forward by hand (retraction mechanism OK). Note that to move the color wheel manually you have to remove the light processor unit from the projector.

Replace the electronic board of the Dolby 3D color wheel unit.

Malfunction of the Dolby 3D color wheel unit.

Replace the whole Dolby 3D color wheel unit. Send the malfunction unit back to Barco.