Spinning motor disconnected.

Check the connection (reference D image "Dolby 3D color wheel board connections.") of the spinning motor. Replace wire unit if damaged.

Feedback circuit of the spinning motor disconnected.

Check the connection (reference A image "Dolby 3D color wheel board connections.") of the feedback circuit. Replace wire unit if damaged.

Blocked color wheel.

Check if the Dolby 3D color wheel can turn freely. No mechanics preventing wheel to turn.

Malfunction Dolby 3D color wheel board.

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

Malfunction spinning motor.

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