— 29 —
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.
General
?The power does not turn ON.01
✔The fuse has blown.
☞After checking for short circuits in the wires, replace the fuse with
one with the same rating.
?There’s a source you can’t switch.07
✔There’s no media inserted.
☞Set the media you want to listen to. If there’s no media in this
unit, you can't switch to each source.
✔The Disc changer isn’t connected.08
☞Connect the Disc changer. If the Disc changer isn’t connected to
it's input terminal, You can't switch to an external disc source.
?The memory is erased when the ignition is turned OFF.10
✔The ignition and battery wire are incorrectly connected.11
☞Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
?Even if Loudness is turned ON, high-pitched tone isn't compensated
for. 17
✔Tuner source is selected.
☞High-pitched tone isn't compensated for when in Tuner source.
?No sound can be heard, or the volume is low.
✔The fader or balance settings are set all the way to one side.21
☞Center the fader and balance settings.
✔The input/output wires or wiring harness are connected incorrectly.22
☞Reconnect the input/output wires or the wiring harness correctly.
See the section on <Connecting Wires to Terminals>.
?The sound quality is poor or distorted.25
✔One of the speaker wires is being pinched by a screw in the car.
☞Check the speaker wiring.
✔The speakers are not wired correctly.27
☞Reconnect the speaker wires so that each output terminal is
connected to a different speaker.
?The Touch Sensor Tone doesn’t sound.34
✔The preout jack is being used.
☞The Touch Sensor Tone can’t be output from the preout jack.
Tuner source
?Radio reception is poor.39
✔The car antenna is not extended.
☞Pull the antenna out all the way.
✔The antenna control wire is not connected.40
☞Connect the wire correctly, referring to the section on
<Connecting Wires to Terminals>.
Disc source
?"AUX EXT" is displayed without achieving External disc control
mode.50
✔Unsupported disc changer is connected.51
☞Use the disc changer mentioned in the IMPORTANT
INFORMATION of the section on <Safety precautions> (page 4).
?The specified disc does not play, but another one plays instead.52
✔The specified CD is quite dirty.
☞Clean the CD.
✔The disc is loaded in a different slot from that specified.54
☞Eject the disc magazine and check the number for the specified
disc.
✔The disc is severely scratched.55
☞Try another disc instead.
Troubleshooting Guide
— 29 —
KDC-MP225/225/2025_U.S 03.11.14 5:18 PM Page 29