Xantech 490-85 installation instructions Cause, Solution, Use a 490-90Plasma Friendly

Symptom #3: TB LED on IR Receiver (and/or Emitters) on solid

	Cause:	Solution
		Use a 490-90 Plasma 'Friendly'
		Receiver. If already using a 490-90 unit,
		please note the Plasma interference can
		be reflected off of any item it comes into
1.	Plasma Interference	contact with within approx. 3ft. From the
		front of the display. Keeping this in mind,
		make sure that the 490-90 is free from
		any obstruction that might reflect back
		into the receiving eye.
2.	Voltage and Ground wires are reversed at	Recheck your wiring.
	the connecting block or IR Receiver
		In this case use either a SUN filter
		(SUN480, SUN490, SUN780), or any of
	Relatively high levels of ambient noise.	our ‘CFL Friendly’ IR Receivers (291-80,
		480-80, 780-80). For Plasma
	This can be due to any of the following:
3.		Interference use the 490-90 or 780-90
	Sunlight, florescent Lighting or Plasma
		‘Plasma Friendly’ IR Receivers. These
	Displays.
		can also be used in direct sunlight and in
		the presence of ‘tube style’ florescent
		lighting.
		Reposition IR Receiver and/or cabling
	EMI induced noise. This can be due to light	away from emitting device. You can also
		place a 470Ohm resistor in parallel with
4.	dimmer controls or other radiating electronic	the IR Signal and GND connections on
	devices (PC’s or any poorly shielded	the connecting block. This will also help
	electronic device).
		alleviate any stray capacitance in the
		cable.
	Power Supply not putting out proper voltage.	Verify supply is a 12VDC regulated
5.		supply reading between 11.5 to 13VDC
		under load.

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