Focal FDS 4.350 Manuel D'utilisation page 34

FDS AMPLIFIERS
U s e r m a n u a l
If you want to use the FDS4.350 with its independent 4-channel input configuration, select mode 3/4.
If you want to use the FDS4.350 in 3-channel mode, select mode 1+2. Channels 3/4 will then receive the
mono signal from channels 1 and 2 of your subwoofer.
5 – Troubleshooting
The state of the different indicator LEDs refer to the nature or the cause of a malfunction.
Check the possible causes shown below. If, despite these checks, the equipment is still not working
correctly, contact your FDS amplifier installer or dealer.
Status of indicator
LEDs
Illuminated red
Off
Flashing from red to
green
Off
Off
Off / illuminated
green
CAUTION
FDS4.350 is working with a particular starting sequence. It needs both REM signal and audio
signal at the input to start correctly. Please, check audiosignal presence with sufficient vo-
lume on the head unit.
Presence of
sound
NO
NO
Distorted, absent
or
alternating
NO
NO
YES/NO
Or distorted
Possible cause
Output short circuit
No power or poor
connection
Overheating
No REM signal
Fuse failure
Grounding defect
Action
Turn off the sound system
Check the speaker drivers, their
minimum impedance,
their connections and the spea-
ker driver cables.
Turn off the sound system
Check power source is 12V
Check the power cables and
their polarity. Check the fuses
Turn off the sound system
Wait for your amplifier to cool
down before resuming use.
Turn on the sound system
Check power on the REM ter-
minal.
Turn off the sound system
Check and replace the fuses if
necessary.
Turn off the sound system
Check the continuity of your
connection from the GND termi-
nal to the chassis of the vehicle.
34