21
Receiver won’t turn on (power light doesn’t
turn on)
•Verifythatthepowersupplyispluggedinto
both the receiver and a working wall outlet
• Testwithanotherpowersupply
Receiver keeps going into standby mode
when playing auxiliary audio
• Volumelevelonauxiliaryaudiodeviceisset
too low
Receiver will not "wake up" from standby mode
• Volumelevelonauxiliaryaudiodeviceisset
too low
• Makesuremicrophoneisonandworkingcorrectly, and the receiver is receiving the signal
Adapto LED keeps flashing on and off
• Thisisnormal.Thelightwillturnonwhen
the Adapto platform is processing the speech
signal. There is nothing you need to do
’Dead spots’ or
microphone crackling/noise
• Verifythatyouarenotblockingeitherthe
emitters on the microphone or the sensors
on receiver or mounted around room
• Ifreceptionisinterruptedornoisywhenfacing
a certain direction, install an additional sensor
in that area of the room (see Installer Guide)
•Ifusingmorethanonemicrophone,verify
that they are not on the same channel
•Rechargeorreplacethemicrophonebatteries
No signal reception (channel indicator light
on receiver is red)
• Checkthatthemicrophoneison
• Checkthatthemicrophoneisnotmuted
(940TM only)
• Verifythatyouarenotblockingeitherthe
emitters on the microphone or the sensors
on receiver or mounted around the room
• Ifreceptionisinterruptedwhenfacinga
certain direction, install an additional sensor
in that area of the room (see Installer Guide)
•Ifusingmorethanonemicrophone,verify
that they are not on the same channel
•Rechargeorreplacethemicrophonebatteries
Feedback (squealing)
•
Lower the Microphone A or B Volume control(s)
on the receiver
•Makesurethatspeakersaremountedasclose
as possible to the ceiling and to the listening
area; avoid mounting speakers in the teacher’s
primary lecture area
• Positionthemicrophoneclosertomouth
•SelecttheLoworMediumOptiVoicesetting
•Setthegainswitchonthepass-around
microphone to "mid" or "low"
Weak or no output from speaker(s)
•
Increase t
he Microphone A or B Volume
or Aux-In Audio Volume control(s) on
the receiver, or audio device
• Positionthemicrophoneclosertomouth
• Setthegainswitchonthepass-around
microphone to "mid" or "high"
• Verifythatthespeakershavebeenproperly
installed
High or low pitched whine or hum coming
through speakers
•
There may be a ground loop with the
system. Install a ground loop isolator (see
Installer Guide)
• Theremaybe"noisy"electricalwiring.Install
an AC line filter (see Installer Guide)
Sensor lights are blinking
•
This is normal. When the 940R is in standby mode
the sensor LED's will blink every two seconds
Charger light won't come on or is blinking red
•
Check that the charger is connected to a
working power outlet
•
The charger can charge only 950H and
940TM microphones with charge contacts.
Refer to page 3, feature 12 to confirm that
your microphone has these contacts.
•
You may be attempting to charge an
alkaline battery or a rechargeable battery
that has reached the end of its useful
life. Check the battery and replace with a
FrontRow "silver sleeve" rechargeable battery.
15 Troubleshooting