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Kenwood KRC-31: Troubleshooting Guide

Troubleshooting Guide: Kenwood KRC-31

Troubleshooting Guide

What might seem to be a malfunction in your unit may

? The TEL mute function does not work.15

just be the result of slight misoperation or miswiring.

✔ The TEL mute wire is not connected properly.

Before calling service, first check the following table

☞ Connect the wire correctly, referring to the section on

for possible problems.

<Connecting Wires to Terminals>.

English

? The TEL mute function turns ON even though the TEL mute wire is

General

not connected.

16

✔ The TEL mute wire is touching a metal part of the car.

? The power does not turn ON.

01

☞ Pull the TEL mute wire away from the metal part of the car.

✔ The fuse has blown.

☞ After checking for short circuits in the wires, replace the fuse with

? No sound can be heard, or the volume is low.

one with the same rating.

✔ The fader or balance settings are set all the way to one side.

21

✔ No ACC position on vehicle ignition.

02

☞ Center the fader and balance settings.

☞ Connect the same wire to the ignition as the battery wire.

✔ The input/output wires or wiring harness are connected incorrectly.

22

☞ Reconnect the input/output wires or the wiring harness correctly.

? If you have selected Standby mode, the power will go OFF

See the section on "Connecting Wires to Terminals".

automatically.

03

✔ The Power OFF Timer function has been activated.

✔ The cassette tape is bad.

23

☞ If you do not want the power to go OFF automatically, cancel the

☞ Try playing another cassette tape. If works fine, the first tape was

Power OFF Timer function.

bad.

? The sound quality is poor or distorted.

25

? Nothing happens when the buttons are pressed.

04

✔ One of the speaker wires is being pinched by a screw in the car.

✔ The computer chip in the unit is not functioning normally.

☞ Check the speaker wiring.

☞ Press the reset button on the unit (page 4).

✔ The tape head is dirty.

26

? There’s a source you can’t switch.

05

☞ Clean the tape head.

✔ There’s no tape inserted.

✔ The speakers are not wired correctly.

27

☞ Set the media you want to listen to. If there’s no media in this

☞ Reconnect the speaker wires so that each output terminal is

unit, you can't switch to each source.

connected to a different speaker.

✔ The Disc changer isn’t connected.

08

☞ Connect the Disc changer. If the Disc changer isn’t connected to

? The Touch Sensor Tone doesn’t sound.

34

it's input terminal, You can't switch to an external disc source.

✔ The preout jack is being used.

☞ The Touch Sensor Tone can’t be output from the preout jack.

? The memory is erased when the ignition is turned OFF.

10

✔ The battery wire has not been connected to the proper terminal.

? Even though Synchronize Clock is ON, the clock can’t be adjusted.

35

☞ Connect the wire correctly, referring to the section on

✔ The received RDS station isn’t sending time data.

<Connecting Wires to Terminals>.

☞ Receive another RDS station.

✔ The ignition and battery wire are incorrectly connected.

11

☞ Connect the wire correctly, referring to the section on

<Connecting Wires to Terminals>.

— 28 —

Tuner source

Disc source

? Radio reception is poor.

39

? "AUX" is displayed without achieving External disc control mode.

50

✔ The car antenna is not extended.

✔ O-N switch is set to "O" side.

☞ Pull the antenna out all the way.

☞ Set the switch to "N" side.

✔ The antenna control wire is not connected.

40

✔ Unsupported disc changer is connected.

51

☞ Connect the wire correctly, referring to the section on

☞ Connect the supported disc changer. (page 3)

<Connecting Wires to Terminals>.

? The specified disc does not play, but another one plays instead.

52

? It isn't the set Traffic information sound volume.

43

✔ The specified CD is quite dirty.

✔ The set sound volume is less than the tuner sound volume.

☞ Clean the CD.

☞ If the tuner sound volume is louder than the set sound volume,the

✔ The CD is upside-down.

53

tuner sound volume is used.

☞ Load the CD with the labeled side up.

✔ The disc is loaded in a different slot from that specified.

54

Cassette tape source

☞ Eject the disc magazine and check the number for the specified

? Can’t remove tape.44

disc.

✔ The cause is that more than 10 minutes has elapsed since the vehicle

✔ The disc is severely scratched.

55

ACC switch was turned OFF.

☞ Try another disc instead.

☞ The tape can only be removed within 10 minutes of the ACC

switch being turned OFF. If more than 10 minutes has elapsed,

? The specified track will not play.

58

turn the ACC switch ON again and press the Eject button.

✔ Random play or magazine random play has been selected.

☞ Turn off random play or magazine random play.

? The Tape Advance and Music Repeat don’t operate correctly.

45

✔ The space between the songs on the tape can’t be recognized

? Track repeat, disc repeat, track scan, random play, and magazine

because it’s too short.

random play start by themselves.

59

☞ Have at least 4 seconds between songs.

✔ The setting is not canceled.

☞ The settings for these functions remain on until the setting to off

✔ The space between songs can’t be recognized because there’s too

or the disc ejected, even if the power is turned off or the source

much noise between songs.

46

changed.

☞ Reduce the noise between songs.

? Cannot play CD-R or CD-RW.

60

? The blank skip doesn’t work.

47

✔ Finalization processing is not being conducted for CD-R/CD-RW.

✔ Because noise is too loud, the non-recorded part can’t be recognized.

☞ Conduct finalization processing with CD recorder.

☞ Reduce the noise between songs.

✔ A non-compatible CD changer is being used to play the CD-R/CD-

? Blank Skip functions at places that are recorded.

48

RW.

61

✔ Because the recording level is low, it’s recognized as not recorded.

☞ Use a CD changer compatible with CD-R/CD-RW to play.

☞ Turn Blank Skip OFF.

?Track Search can't be done.

66-2

✔ For the albums first or last song.

☞ For each album, Track Search can't be done in the backward

direction for the first song or in the forward direction for the last

song.

— 29 —

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