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).