21
Symptom
Possible Fault
Action
No signal on the line input.
1) No input signal connected.
2) HLD in secondary mode.
3) Equipment failure.
1) Check “active” light: if unlit
check source, if lit, adjust
level.
2) HLD must be in
PERIMETER or PRIMARY.
3) Seek assistance.
The low signal light is on.
1) The HLD is having to use very
high gain to process the input
signal.
1) Increase the input signal
level at source, reduce the
HLD input level setting.
The Drive level indicates
current is flowing but I hear
nothing in the loop.
1) Shorted feeder cable
(unlikely).
2) Loop listener not working or
being used away from loop.
1) Check feeder cable,
although the HLD will usually
refuse to tune to shorted
feeder.
2) Check listener and
location.
The sound is very distorted.
1) Input level has been turned
up too high for signal level at
input jack.
2) Input signal is distorted.
1) Reduce input level setting.
2) Check signal source.
HLD = Hearing Loop Driver.
If no action is successful please seek assistance from
your distributor or a Contacta installer.
