Kenwood KDC-2021S - Manual (Page 17)

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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.
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.
✔ No ACC position on vehicle ignition. 02
☞ Connect the same wire to the ignition as the battery wire.
? Nothing happens when the buttons are pressed. 04
✔ The computer chip in the unit is not functioning normally.
☞ Press the reset button on the unit (page 4).
? There’s a source you can’t switch. 06
✔ There’s no CD inserted.
☞ Set the media you want to listen to. If there’s no media in this
unit, you can't swhich to each source.
? The memory is erased when the ignition is turned OFF. 10
✔ The battery wire has not been connected to the proper terminal.
☞ Connect the wire correctly, referring to the section on
.
✔ The ignition and battery wire are incorrectly connected. 11
☞ Connect the wire correctly, referring to the section on
.
? The TEL mute function does not work. 15
✔ The TEL mute wire is not connected properly.
☞ Connect the wire correctly, referring to the section on
.
? The TEL mute function turns ON even though the TEL mute wire is
not connected.
16
✔ The TEL mute wire is touching a metal part of the car.
☞ Pull the TEL mute wire away from the metal part of the car.
? 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
.
Troubleshooting Guide
KDC-2021S_U.S 01.10.11 9:41 AM Page 17