Troubleshooting - LEGRAND Contrôle Stéréo Notice D'installation

4 - Troubleshooting

PROBLEM
The ON/OFF LED (status indicator)
does not light up
The Hi-Fi system is not controlled
via IR
The ADJ LED stays off when the
Hi-Fi system is active
CAUSE
Power supply unit in protection
mode.
No 27 Vdc on the BUS terminal of
the power supply unit.
Incorrect IR cable wiring.
Audio signal missing.
Very low audio Signal.
The level LED is always red.
The signal is distorted, even at
low volumes.
SOLUTION
Check and eliminate the cause of
the short-circuit.
Replace the power supply unit.
Make sure there is 24 – 27 Vdc at
the OUTPUT of the A/V Node to
which it is connected. If there is no
voltage, eliminate the short-circuit
on the BUS (at the OUT side of the
A/V Node).
Check and correct wiring the cable
with the IR transmitter must be
placed at a distance of 1 cm from
the IR receiver of the Hi-Fi system
to be managed.
Check if there is an audio signal.
Check the adjustment of the level
potentiometer or increase the level
of the signal given by the external
source.
Adjust the level potentiometer
correctly.
Make sure the level LED does not
turn orange when playing tracks.
Adjust the potentiometer of the
active Hi-Fi system so that the LED
is always green (it can only turn
orange for a very short time, during
musical peaks).
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