Wire of the Lamp Anode Fan is disconnected.

Remove the projector top cover and the top cover plate of the Light Processor compartment and check the connection of the Lamp Anode Fan (reference 1image).

Wire of the rear fan units is disconnected from the Signal Backplane.

Remove the Lamp House and Lamp Cathode fan and check if the wire unit (reference 2 image) is inserted in the Signal Backplane.

Blocked Lamp Anode Fan

Check if the Lamp Anode Fan is not blocked. Ensure that the Lamp Anode Fan can turn freely. (reference 3 image).

Damaged wire.

Check if the wire of the Lamp Anode Fan is not damaged. Repair if possible, otherwise replace with new one.

Lamp Anode Fan end of life.

Replace the Lamp Anode Fan. See service manual chapter "Replacement of the Lamp Anode".

Malfunction Cinema Controller.

Replace the Cinema Control board. See service manual chapter "Replacement of the Cinema Controller".