Lamp House is not correctly installed.

Check if the Lamp House is properly installed. Ensure that the two fixation screws (reference 2 of image) of the Lamp House are fastened.

Wrong Lamp House detected in lamp compartment of the projector.

Replace the Lamp House with a compatible Lamp House for this projector.

No communication with the Lamp House.

1. Check if the blue socket (reference 3 of image) of the Lamp House is not damaged.

2. Check if the blue socket (reference 4 of image) in the lamp compartment is not damaged.

3. Check if the wire unit (reference 5 of image) is connected with the blue socket in the lamp compartment and is plugged in its socket on the Signal Backplane (reference 6 image).

4. Replace the Cinema Controller board.

5. Replace the Signal Backplane.