Williams Sound Tablet Accessory CHG3512 User Manual

•  Make sure the transformer is plugged into the transmitter and any remote power switch is on.

•  Make sure the electrical outlet is on.

•  Make sure the 24 VAC power supply is working.

•  Make sure the desired audio channel has been activated. See Selecting a Channel on page 7.

•  Make sure the WIR TX90 is plugged in.

•  Make sure the audio input is connected properly.  See page 6 or instructions on the back of the WIR TX90.

•  Make sure an active audio signal is being sent to the WIR TX90 transmitter.

•  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 “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.

•  Listen to the audio signal through the headphone jack on the WIR TX90 transmitter (Figure 10).  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 TX90 system.
 

•  Check for ground loops or noise on the input signal.  Call your Authorized Williams Sound dealer or representative.

NOTE:  Make sure the power line voltage does not fall below 90V, or system performance will be greatly reduced!

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MAN 119H