ABB Busch-Universal 6591U-101-500 Betriebsanleitung Seite 55

Fault Elimination
1.1.1.62
Diagnosis
Stereo system hums/
Intercom system hums:
ELA system hums:
Flickering lamps:
Cause/Remedy
-
Increase distance between
the dimmer line and a
parallel amplifier line to at
least 10 cm
-
Amplifier input Interference
suppression defective.
Check amplifier
-
Increase minimum load
-
Ripple-control signal
-
Supply voltage fluctuations