Disconnected wire of the temperature sensor.

Check if the wire (reference 9 image) of the temperature sensor is plugged into its socket on the Signal Backplane.

Note: To access the socket on the Signal Backplane the Lamp Cathode has to be removed. See service manual chapter "Replacement of the Lamp Cathode Fan".

Damaged wire of the temperature sensor.

1. Repair the wire (reference 29 image)of the temperature sensor which measures the temperature at the lamp outlet (reference 19 image) .

2. If not repairable, replace the temperature sensor.

Defect temperature sensor.

Replace the temperature sensor (reference 19 image) which measures the heat sink temperature of the green channel.

Note: To access the temperature sensor of the lamp outlet channel the air outlet duct of the projector has to be uncoupled from the external air extraction system.