Wire unit (reference FC) of the SMPS fan disconnected.

Remove the left cover of the projector and check both connectionsof the SMPS fans.

Note: SMPS fan 1 is the fan which is connected with the brownwire unit. SMPS fan 2 is the fan which is connected with the red wireunit.

Wire unit of the fans and motor units (reference W) disconnected from the Power Backplane.

Remove the Input & Communication unit and check if the wireunit is inserted in the Power Backplane.

Blocked fan.

Unblock the fan. Ensure that the fan can turn freely.

Damaged wire unit.

Check if the wire unit of the fan is not damaged. Repair ifpossible, otherwise replace with new one.

Fan end of life.

Replace the fan. See service manual chapter Power compartment left fan and Power compartment right fan.

Malfunction Fan Control Board

Replace the Fan Control Board.

Other fans are also not spinning.

Replace the SMPS Board.

Defect Power Backplane

Replace the Power Backplane.