Damaged insulation of the wire unit of the temperature sensor which measures the temperature of the common water cooling block of the heat pipes which drain the heat from the front of the DMD's. When disconnecting the wire the wire unit of the temperature sensor from the Signal backplane the error coded is changed to “block front - temperature sensor open”.

1. Repair the insulation of the wire unit using shrink sleeve.

2. If not repairable, replace the Light Processor Unit. Contact Barco for further instructions to repair the malfunction Light Processor Unit.

Defect temperature sensor which measures the temperature of the common water cooling block of the heat pipes which drain the heat from the front of the DMD's. When disconnecting the wire the wire unit of the temperature sensor from the Signal backplane the error coded is changed to “block front - temperature sensor open”.

Replace the Light Processor Unit. Contact Barco for further instructions to repair the malfunction Light Processor Unit.