Contacta HLD3 Handbuch für Betrieb und Wartung - Seite 3
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OPERATION AND MAINTENANCE MANUAL
Clean amplifier and or microphone with a dry soft cloth or readily available cleansing
wipes.
Do not use solvent based cleaners.
Do not allow cleaning fluids to enter the amplifier or back ports/ vents of the
microphone.
7. Troubleshooting
Symptom
No Power detected
Input light is not illuminated
Output light is not illuminated
No audio is heard through the
induction loop
Interference
(buzzing / whistling / hissing)
is heard through induction loop
Note: Product and its features may change without notice due to the ongoing product development at Contacta.
Possible Fault
Power jack not plugged in or faulty
Plug fuse has blown
Faulty power supply unit
Faulty amplifier
Induction loop disconnected
Optical / line out disconnected
Induction loop disconnected
Optical / line out disconnected
Volume is too low
If using a loop pad, hearing aid user
is not seated above
Unscreened or poorly earthed third
party equipment is being used in
close proximity
Incorrect power supply being used
Page 3 of 3
Action
Check power jack is firmly plugged in
Replace fuse
Use alternative mains plug socket
Change the power supply unit
If problem persists please seek
assistance from a Contacta engineer
Ensure loop is plugged in correctly. See
figure 1. A
Ensure that either optical out or line out is
connected to the audio source and HLD3.
See figure 1. B
Check loop connection. See figure 1. A
Check connection to audio source. See
figure 1. B / C
Adjust the volume on HLD3 then on the
hearing aid
Make sure the hearing aid user is seated
where the loop pad is located
Please seek assistance from a Contacta
engineer if unit is faulty
Switch off any third party equipment to
identify the source of interference
Ensure that a Contacta supplied power
supply unit is being used