13
Troubleshooting
All Audio Devices (Auxiliary Line Level or Loudspeaker)
Symptom
Corrective Procedure
Hum-background noise
Move HUM switch to the other position. Choose the
position that produces the least hum.
No sound
Connection Problems
Be sure that you are using both ends of the same patch
cord. Cord
and
plug colors must match. In particular, if
you used half of the paired RCA/Mini phone plug cable, be
sure you used the same color plug on both ends.
Some audio devices may have AUX level
inputs
; be sure
that the patch cords are plugged into the OUTPUT jacks on
the audio device.
Check that the plugs fit into the outlets completely and
firmly. (The plugs with four thin metal “petals” around a
central shaft must be used with outlets that have smooth
collars that stick out from the connector).
The cord itself may have been damaged. Try a different
cord if one is available.
No sound
Equipment and Sound System Problems
Check that the audio device itself is working. If it isn’t
getting power, the power outlet it is plugged into may be
defective or turned off.
Check that the sound system is turned on (there is usually a
power light to indicate that the unit is operating).
Check that the volume controls on both the audio device
and the sound system are turned up to moderate levels. Try
turning up the EJ-10’s volume control.
If there is still no sound, disconnect the EJ-10 from the
sound system’s microphone input jack. Plug a microphone
into the sound system and go through the following steps to
test the sound system:
