17
4 - Troubleshooting
PROBLEM
CAUSE
SOLUTION
The ON/OFF LED (status indicator)
does not light up
Power supply unit in protection
mode.
Check and eliminate the cause of
the short-circuit.
Replace the power supply unit.
No 27 Vdc on the BUS terminal of
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).
The Hi-Fi system is not controlled
via IR
Incorrect IR cable wiring.
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.
The ADJ LED stays off when the
Hi-Fi system is active
Audio signal missing.
Check if there is an audio signal.
Very low audio Signal.
Check the adjustment of the level
potentiometer or increase the level
of the signal given by the external
source.
The level LED is always red.
Adjust the level potentiometer
correctly.
The signal is distorted, even at
low volumes.
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).
