Kenwood DDX7025 Instruction Manual page 96

Troubleshooting Guide
What might appear 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.
General
The power does not turn on.
• The fuse has blown.
The desired source is NOT selected although you pressed the SRC button.
• An optional unit required to listen to each source is
not connected yet.
• The RESET button is not pressed yet although the
optional unit has been connected to the system.
• The "O-N" switch of the optional unit is at the "O"
position.
• A disc changer not supported by the system is used.
Nothing happens when the buttons are pressed.
• The computer chip in the unit is not functioning
normally.
No television/video image appears.
• The unit is not connected to the parking brake
detection switch.
• The parking brake is not engaged.
The screen is dark.
• The unit is in a location where temperature is low.
The screen does not darken when the vehicle's lights are turned on.
• The unit is set to auto dimmer.
• The illumination wire has not been connected. (If
manual dimmer is set)
AM/FM radio reception is poor and/or there is noise.
• The TV antenna and vehicle's radio antenna are too
close.
The remote controller does not operate.
• The remote control mode selector is not set
correctly.
96 English
• After checking for short circuits in the wires, replace the
fuse with one having the same rating.
• A non-connected source is not selected. See
<INSTALLATION MANUAL> and connect the unit correctly.
• Press the reset button (see page 4).
• Set the "O-N" switch to the "N" position.
• Use a disc changer supported by the system (see page 4).
• Press the reset button on the unit (see page 4).
• Make proper connections according to <INSTALLATION
MANUAL>.
• For safety reasons no television/video images are
displayed while the vehicle is moving. Engaging the
parking brake will cause images to be displayed.
• If the temperature of the monitor unit drops, the screen
may appear darker when power is first turned on due to
the characteristics of a liquid crystal panel. Wait a while
after turning power on for the temperature to rise. Normal
brightness will return.
• When the unit is set to auto dimmer, it is not linked to the
vehicle's light switch.
• Make proper connections according to <INSTALLATION
MANUAL>.
• Separate the two antennas as far as possible.
• Turn off the main unit.
• Switch the remote control mode selector according to the
source you select (see page 10).