Code 5553: “tec - voltage low” (Warning)

Situation	Solution
Damaged insulation of the wire unit of one of the three Peltier elements (TEC) causing a short circjvdyuit with the projector chassis (reference 1 image). Disconnecting the wire unit of the damaged Peltier element from the Signal Backplane will clear the warning.	Check the wire units of each Peltier element. Repair the insulation of the wire unit using shrink sleeve. If not repairable, replace the Light Processor unit. Return the malfunction Light Processor to factory for repair. See "Sealed Light Processor assembly".
One of the Peltier elements causes a short circuit.	Replace the Light Processor unit. Return the malfunction Light Processor to factory for repair. See "Sealed Light Processor assembly".
Malfunction Fan Control board or SMPS board.	Measure on the Signal Backplane the +VTEC voltage on pin 4, 5, 6, 7 or 8 of the connector of the black wire unit which comes from the SMPS board. See image. If the +VTEC voltage is about 16V then replace the Fan Control board. See "Replacement of a Card Cage board". Otherwise replace the SMPS board. See "Replacement of the SMPS board".

Situation

Solution

Damaged insulation of the wire unit of one of the three Peltier elements (TEC) causing a short circjvdyuit with the projector chassis (reference 1 image). Disconnecting the wire unit of the damaged Peltier element from the Signal Backplane will clear the warning.

Check the wire units of each Peltier element.

Repair the insulation of the wire unit using shrink sleeve.
If not repairable, replace the Light Processor unit. Return the malfunction Light Processor to factory for repair. See "Sealed Light Processor assembly".

One of the Peltier elements causes a short circuit.

Replace the Light Processor unit. Return the malfunction Light Processor to factory for repair. See "Sealed Light Processor assembly".

Malfunction Fan Control board or SMPS board.

Measure on the Signal Backplane the +VTEC voltage on pin 4, 5, 6, 7 or 8 of the connector of the black wire unit which comes from the SMPS board. See image.

If the +VTEC voltage is about 16V then replace the Fan Control board. See "Replacement of a Card Cage board". Otherwise replace the SMPS board. See "Replacement of the SMPS board".