Troubleshooting - Hifonics Vulcan VX690A Owner's Manual

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
Recheck
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
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