Troubleshooting
Problem
Possible Cause(s)
Solution(s)
No sound coming from
selected music source
No video output from
display devices
Voice cancel features are
not working properly
Talk Over feature lowers
microphone volume with
music volume
Crossfader isn’t fading
between channels
No channels or volume
being cued to phones
No audio being routed
though Insert channels
No echo applied to audio
High pitched squealing
occurs when using the
microphone
Source toggle switch is set
incorrectly
Gain or master levels are
turned down
External device(s) are either
not connected or not working
properly
Player source is not properly
connected to the KJ-7800
Video in, or the KJ-7800 out to
the display monitor
Video cable(s) are not properly
connected
Disc medium is not formatted
for video
Disc is not multiplexed
Microphone being used is not
plugged into Mic channel 1
Active source(s) are not
assigned to the crossfader
Cue buttons for channel(s) are
not selected
Cue level is turned down too
low
Cue/Master button is set to
“Master” preventing selectable
channel cueing
Cable(s) connected are not
designed for “Insert” use
Echo master level control is
turned down
Echo On/Off button is set to off
Channel specific echo level
control is turned down
Microphone is pointed to, or to
close to speakers
Treble level(s) are too high on
microphone channel(s)
Change source toggle to the
correct setting
Raise gain and master levels
to an appropriate level
Check external device(s)
connections and viability
Check all video connections in
from the player and to the
video monitor out from the
KJ-7800.
Reconnect cables firmly to
correct video jacks
Play a video formatted disc i.e.
CD+G, VCD, LD or DVD
Insert a multiplexed disc
Connect microphone to Mic
channel 1
Assign active sources to the
crossfader
Press Cue button on
channel(s) you want cued
Turn up cue volume level
Press Cue/Master button in for
“Cue” setting
Replace cables with proper
Insert cables
Turn echo master level control
up
Set echo On/Off button to On
Turn channel specific echo
level control up
Move microphone away from
speakers
Turn down treble level(s) on
microphone channel(s)
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