Kenwood KDC-D300 - Manual (Page 13)

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What might seem to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before
calling service, first check the following table for possible problems.
SOLUTION POSSIBLE CAUSE PROBLEM
No sound can be heard, or the
volume is low.
The fader or balance settings are set all the way to one
side. Reset the fader or balance settings.
Nothing happens when the
buttons are pressed. The computer chip in the unit is not functioning normally. Press the reset button on the centre unit.
Attenuator is turned on. Turn off Attenuator.
A CD ejects as soon as it is
loaded. The CD is upside-down. Load the CD with the labeled side up.
The CD is quite dirty. Clean the CD, referring to the section on "Cleaning CDs" (see
p. 5).
The sound skips on a CD. The CD is scratched or dirty. Clean the CD, referring to the section on "Cleaning CDs" (see
p. 5).
A track will not play. Random play has been selected. Turn off random play.
The disc control mode cannot
be selected. No cable has been connected to the disc changer input
terminal on the unit. Connect the control cable to the disc changer input terminal
on the centre unit.
Troubleshooting Guide
No CD has been inserted. For centre units brought on to the market from 1999
onwards, it is not possible to switch to the CD mode unless
a CD has already been inserted.
The spectrum analyser is not
displayed. The speaker input cable is not connected. Refer to the "Connections" section, and connect the cable.
The fader setting has been adjusted to the rear side. Adjust the fader control on the centre unit to the centre
position.
The analyser display level has been set too low. Adjust it to a higher level.
The volume is too low. Raise the volume, or alternatively, adjust the analyser display
level to a higher level.
5 minutes have elapsed since the panel dropped open. When 5 minutes have elapsed since the panel dropped
open, the disc will automatically stop playing.
The system will not enter the
Menu mode. The system is not in CD play mode. If the main unit is not in CD play mode, it will not go into the
Menu mode.