Contacta STS-K072 Installation & User Manual - Page 16
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Symptom
There is no
power
detected
through the
amplifier (and
there is power
at the socket).
The red LED is
illuminated on
front panel.
I can hear
interference
through
speakers
(buzzing /
whistling /
hissing).
Amplifier goes
into feedback.
Unit does not
go into power
saving mode.
If no action is successful please seek assistance from
16
Troubleshooting
Possible Fault
1) Power jack not plugged in or
faulty.
2) Plug fuse has blown.
3) Faulty power supply unit.
4) Faulty amplifier.
1) Constant red LED:
Staff or customer microphone fault.
2) Red LED comes on after speech:
Induction loop fault.
1) Unscreened or poorly earthed
third party equipment is being used
in close proximity.
2) Internal volume gain set to high.
3) Incorrect power supply being
used.
1) Internal volume gain set to high.
2) Microphone positioned too close
to speaker.
1) Ambient noise in area is too high.
your distributor or a Contacta installer.
Action
1) Check power jack is firmly plugged
in.
2) Replace fuse. If it blows again,
replace the power supply unit.
3) Replace the power supply unit.
4) Replace amplifier.
1) Ensure microphone is wired
correctly and firmly plugged in. Try
alternative microphone to ensure
port is working.
2) Ensure induction loop connector is
wired correctly and firmly plugged in.
1) Switch off any third party
equipment to identify the source of
interference.
2) Access the amplifier engineers
mode to adjust the internal settings.
3) Ensure that our grounded power
supply unit is connected.
1) Access the amplifier engineers
mode to adjust the internal settings.
2) Move the microphone to a
location further from the speaker.
1) Switch off any air con systems,
desktop fans and or computers to
reduce ambient noise.