Troubleshooting - Conrad Boom 80 MkII Notice D'emploi

13. Troubleshooting

In purchasing the Raveland Subwoofer you have acquired a product which has been designed according to the state
of art and is operationally reliable. Nevertheless, problems or faults may occur. Therefore, we would like to explain
to you how you can eliminate possible faults.
Observe the safety instructions at all times!
No function, the indicator POWER (2) does not light up:
• The GND connection on the connection terminal of the power supply (9) is not connected to the car body.
• The REM connection on the connecting terminal of the power supply (9) is not connected to the aerial control output
of the car radio.
• The BAT connection on the connecting terminal for the power supply (9) is not supplied with +12 V.
• The electric fuse in the subwoofer has been triggered due to a technical problem with the subwoofer.
• The temperature protection of the subwoofer has been triggered due to overheating. Allow the device to cool down.
• The FUSE (7) of the subwoofer or the fuse in the positive connection is defective.
The indicator POWER (2) lights, but there is no sound:
• The volume control unit of the car radio is set to minimum.
• The subwoofer's volume control LEVEL (4) is set to minimum.
• One input is not connected correctly.
Interference noises occur:
• A bad earth connection of the earthing cable. Remove any rust or paint from the contact surfaces.
• The earthing point of the car radio and of the subwoofer are not on the same potential, test different earthing points.
• The cables of the subwoofer are positioned too close to the cables for the ignition system of the vehicle.
• The ignition system is not shielded.
• The cables of the input are installed too close to the power supply cables.
The subwoofer switches on and off during operation:
• Poor earth contact of the earth connection cable, the mass point of the cable or of the battery terminal is corroded.
• The voltage applied at the BAT connection on the connection terminal for the power supply (9) is too low, the
connecting point of the cable or of the battery terminal corrodes, battery too weak.
• A loose contact at the remote cable, REM connection of the connection terminal for the power supply (9) shows
a loose contact or is corroded.
Repairs other than those described above should only be performed by an authorised specialist.
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