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CERWIN-VEGA! PROFESSIONAL
26
Troubleshooting
Problem
Cause
Solution
No Sound
Loudspeaker is not
connected to active
AC power
Verify the loudspeaker is indeed connected to an active AC power source.
Various outlets may need to be switched ‘on’. Use a lamp as another way to be
sure the AC power source is active.
Loudspeaker power
switch is in the ‘OFF’
position
Verify that the power switch on the back of the loudspeaker is ‘ON’.
Input level is set to
minimum setting
Set the input level to a setting where sound can be heard.
Main volume is set to
minimum setting
Set the volume level to a setting where sound can be heard.
Audio source is not
active, volume is set
too low, or poor
connection
Use the Signal indicator on the back of the loudspeaker to verify an audio
signal is indeed present.
Verify that the audio equipment is turned ‘ON’ and set to output an audio
signal at a volume level above minimum.
Verify the cable connection from the audio source output to the loudspeaker
input is correct.
Audio mixers may have a MUTE or LOOP switch that may need to be
disengaged.
Microphones that require phantom power must be used with an external
power source.
No Power
Loudspeaker is not
connected to active
AC power
Verify the loudspeaker is indeed connected to an active AC power source.
Various outlets may need to be switched ‘ON’. Use a lamp as another way to be
sure the AC power source is active.
Loudspeaker power
switch is in the ‘OFF’
position
Verify that the power switch on the back of the loudspeaker is ‘ON’.
AC power source
voltage is too low or
high
Verify if the AC power source is too low or too high. The loudspeaker will
protect itself if the AC power source is 10% lower or 10% higher than the
loudspeaker’s intended voltage setting.
Loudspeaker fuse is
blown
Disconnect all power connections and inspect and replace, if necessary, the
fuse located on the rear of the loudspeaker. See Specifications for fuse
information.
Shutdown
Loudspeaker self-
protection
Avoid placing the loudspeaker near a heat source or under direct sun light.
Avoid using an audio source with clipped and/or distorted input signal.
Verify the limiter indicators are not always on and if so, lower the input and
volume levels until the limiter indicator is ‘OFF’.