Hifonics VULCAN VX690A Owner's Manual - Page 15

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Malfunction: no function, no power LED

Reason:

1. The power supply connection of the device is not correct

2. The cabels have no mechanical or electrical contact

3. The remote turn-on connection from the head unit to the device is not correct

4. Defective Fuses. In case of replacing the fuses, ensure the correct fuse rating

Malfunction: no signal on loudspeakers, but power LED lights up

Reason:

1. The connections of the high level inputs or the RCA audio cables are not correct

2. The connections of the high level inputs or the RCA audio cables are defective

3. The loudspeaker is defective

4. No signal from the head unit

Malfunction: distortions on the loudspeaker

Reason:

1. The loudspeaker is overloaded

Malfunction: No bass

Reason:

1. Interchange of loudspeaker cable polarity

2. The RCA audio cables are loose or defective

Malfunction: OUTPUT LEVEL controller without function

Reason:

1. The remote controller is connected

TROUBLE SHOOTING

Remedy:

Recheck

Replace Fuses

Remedy:

Recheck

Replace cables

Replace speaker

Check head unit settings

Remedy:

Turn down the level

Turn down the level on the head unit

Switch off loudness on the head unit

Reset bass EQ on the head unit

Remedy:

Reconnect

Reconnect or replace the cables

Remedy:

Use the remote controller

Disconnect the remote controller