Malfunction SMPS module. All other fans also report voltage low error.

Replace the SMPS module. See "Replacement of the Switched Mode Power Supply"

Damaged insulation of the wire unit of the DMD red fan.

Remove the Light Processor from the projector and check the insulation of the wire unit of the fan.

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

2. If not repairable, replace the whole wire unit and fan.

Malfunction Fan & Motor Control board.

Replace the Fan & Motor Control board. See "Removing a board in the card cage"

Malfunction signal backplane

Replace the signal backplane, see "Replacement of the signal back plane".