Troubleshooting
The WIR TX90 DC “Power On” indicator is not lit.
• Make sure the power supply is plugged into the transmitter and any remote power switch is on.
• Make sure the electrical outlet is on.
• Make sure the power supply is working (LED is lit).
The WIR TX90 DC channel A or B “On” indicator is not lit.
• Make sure the desired audio channel has been activated. See Selecting a Channel on page 7.
• Make sure the WIR TX90 DC is plugged in.
• Make sure the audio input is connected properly. See page 6 or instructions on the back of the WIR TX90 DC.
• Make sure an active audio signal is being sent to the WIR TX90 DC transmitter.
No sound through receivers.
• Check to make sure the receiver is operating on the same frequency as the transmitter.
• If some of the receivers work but others don’t, check for bad batteries or earphones on the receivers that aren’t working.
• If none of the receivers work, check to see if the power and audio input cable are connected to the transmitter and that the
WIR TX90 DC “Power On” and Channel A or B “On” indicator is illuminated.
• Check to see if the transmitter is connected properly to the sound system. The audio level indicators should flash on channels that are selected.
• Make sure the “eye” is not covered up on the receiver. There must be clear line of sight between the receiver eye and the transmitter panel.
Sound through the receivers is weak and noisy.
• Listen to the audio signal through the headphone jack on the WIR TX90 DC transmitter. If the signal is weak and noisy here,
try increasing the audio input level (see Adjust Audio Input Level, page 8), or increase the input signal level from the sound
system by turning up the mixer control. If the signal sounds okay, you may need to reposition the transmitter panel or add
additional IR emitters to the WIR TX90 DC system.
Buzzing or humming noise in sound system.
• Check for ground loops or noise on the input signal. Call your Authorized Williams Sound dealer or representative.
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WIR TX9 DC Emitter, WIR TX90 DC Transmitter
