KDC-W4531 KDC-W4031 KDC-W431G KDC-W409 KDC-3031A KDC-3031G KDC-309A KDC-309G

CD-RECEIVER

INSTRUCTION MANUAL
B64-2932-00/00 (EW/EN/E2W/E2N)

Contents

Safety precautions Notes About CDs About MP3 and WMA General features
Power Selecting the Source Volume Attenuator System Q Audio Control Audio Setup Speaker Setting Switching Display Dimmer Control Theft Deterrent Faceplate TEL Mute

Menu system

Menu System Security Code Touch Sensor Tone Manual Clock Adjustment Synchronize Clock DSI (Disabled System Indicator) Selectable Illumination News Bulletin with Timeout Setting Local Seek Tuning Mode AF (Alternative Frequency) Restricting RDS Region (Region Restrict Function) Auto TP Seek Monaural Reception Auxiliary Input Display Setting Text Scroll Power OFF Timer CD Read Setting Demonstration mode Setting

Tuner features

Tuning Tuning Mode Station Preset Memory Auto Memory Entry Preset Tuning
Accessories/ Installation Procedure 24
Connecting Wires to Terminals Installation Removing the Unit 13 Troubleshooting Guide Specifications

RDS features

Traffic Information Radio Text Scroll PTY (Program Type) Program Type preset Changing Language for PTY Function
CD/Audio file/External disc control features 16
Playing CD & Audio file Playing External Disc Fast Forwarding and Reversing Track/File Search Disc Search/Folder Search Track/File/Disc/Folder Repeat Scan Play Random Play Magazine Random Play Folder Select Text/Title Scroll

English

Safety precautions

2WARNING

To prevent injury or fire, take the following precautions:
To prevent a short circuit, never put or leave any metallic objects (such as coins or metal tools) inside the unit.
About CD players/disc changers connected to this unit
KENWOOD disc changers/ CD players released in 1998 or later can be connected to this unit. Refer to the catalog or consult your Kenwood dealer for connectable models of disc changers/ CD players. Note that any KENWOOD disc changers/ CD players released in 1997 or earlier and disc changers made by other makers cannot be connected to this unit. Unsupported connection may result in damage. Setting the "O-N" Switch to the "N" position for the applicable KENWOOD disc changers/ CD players. The functions that can be used and the information that can be displayed will differ depending on the models being connected.
You can damage both your unit and the CD changer if you connect them incorrectly.

2CAUTION

To prevent damage to the machine, take the following precautions:
Make sure to ground the unit to a negative 12V DC power supply. Do not install the unit in a spot exposed to direct sunlight or excessive heat or humidity. Also avoid places with too much dust or the possibility of water splashing. Do not set the removed faceplate or the faceplate case in areas exposed to direct sunlight, excessive heat or humidity. Also avoid places with too much dust or the possibility of water splashing. To prevent deterioration, do not touch the terminals of the unit or faceplate with your fingers. Do not subject the faceplate to excessive shock, as it is a piece of precision equipment. When replacing a fuse, only use a new one with the prescribed rating. Using a fuse with the wrong rating may cause your unit to malfunction. Do not use your own screws. Use only the screws provided. If you use the wrong screws, you could damage the unit.

Lens Fogging

Right after you turn on the car heater in cold weather, dew or condensation may form on the lens in the CD player of the unit. Called lens fogging, CDs may be impossible to play. In such a situation, remove the disc and wait for the condensation to evaporate. If the unit still does not operate normally after a while, consult your Kenwood dealer.
Do Not Load 8 cm (3 in.) CDs in the CD slot
If you try to load a 8 cm (3 in.) CD with its adapter into the unit, the adapter might separate from the CD and damage the unit.

English |

If you experience problems during installation, consult your Kenwood dealer. If the unit fails to operate properly, press the Reset button. The unit returns to factory settings when the Reset button is pressed. Press the reset button if the disc auto changer fails to operate correctly. Normal operation should be restored.

Applying spray cleaner directly to the unit may affect its mechanical parts. Wiping the faceplate with a hard cloth or using a volatile liquid such as thinner or alcohol may scratch the surface or erases characters.
The marking of products using lasers (Except for some areas)

CLASS 1 LASER PRODUCT

The label is attached to the chassis/case and says that the component uses laser beams that have been classified as Class 1. It means that the unit is utilizing laser beams that are of a weaker class. There is no danger of hazardous radiation outside the unit.
Cleaning the Faceplate Terminals
If the terminals on the unit or faceplate get dirty, wipe them with a dry, soft cloth.

About CDs

Handling CDs
Dont touch the recording surface of the CD.

Removing CDs

When removing CDs from this unit pull them out horizontally.

CDs that cant be used

CDs that arent round cant be used.
CD-R and CD-RW are easier to damage than a normal music CD. Use a CD-R or a CD-RW after reading the caution items on the package etc. Dont stick tape etc. on the CD. Also, dont use a CD with tape stuck on it.

When using a new CD

If the CD center hole or outside rim has burrs, use it after removing them with a ball pen etc.
CDs with coloring on the recording surface or that are dirty cant be used. This unit can only play the CDs with. It may not correctly play discs which do not have the mark. A CD-R or CD-RW that hasnt been finalized cant be played. (For the finalization process refer to your CD-R/CD-RW writing software, and your CDR/CD-RW recorder instruction manual.)

Burrs Burrs

CD storage
Dont place them in direct sunlight (On the seat or dashboard etc.) and where the temperature is high. Store CDs in their cases.

CD accessories

Dont use disc type accessories.

CD cleaning

Clean from the center of the disc and move outward.

About MP3 and WMA

The playable MP3/WMA file (hereafter called Audio file) and the media format has the following limitation. The Audio file, which is out of the specification, may not able to be played normally, or the file and folder names may not be displayed correctly.
The maximum number of characters for this unit
File/Folder name: 64 (Joliet: 32) characters ID3 Tag/Contents property (WMA): 30 characters
File/Folder name is the number of the characters including the extensions ID3 Tag can only display the tag of Ver1.X.

Decreasing Volume Turn the [VOL] knob counterclockwise.

Attenuator

Turning the volume down quickly. Press the [ATT] button. Each time the button is pressed, the Attenuator turns ON and OFF. When its ON, the "ATT" indicator blinks.
This unit automatically turns full power OFF after 20 minutes lapses in Standby mode in order to save the vehicles battery.

System Q

You can recall the best sound setting preset for different types of music.
5 Exit Audio Control mode
Press any button. Press the button which is not [VOL] knob and [ATT] button.
1 Select the source to set

Press the [SRC] button.

2 Select the Sound type
Press the [Q] button. Each time the button is pressed, the sound setting switches. Sound setting Natural Rock Pops Easy Top 40 Jazz Display "NATURAL" "ROCK" "POPS" "EASY" "TOP40" "JAZZ"

Audio Setup

Setting the Sound system, such as Volume offset and Loudness.
1 Select the source for adjustment

2 Enter Audio Setup mode

Press the [VOL] knob for at least 1 second.
3 Select the Audio Setup item for adjustment
Press the [VOL] knob. Each time the knob is pressed, the items that can be adjusted switch as shown below.
When the System Q setting is changed, the Bass, Middle, and Treble set in audio control replace the System Q values. "USER" : The values set on the <Audio Control> (page 8). Each setting value is changed with the <Speaker Setting> (page 8). First, select the speaker type with the Speaker setting.
4 Adjust the Audio setup item
Turn the [VOL] knob. Adjustment Item Volume offset Loudness Display "V-OFF" "LOUD" Range ON/OFF
Audio Control 1 Select the source for adjustment
Volume offset: Each sources volume can be set as a difference from the basic volume. Loudness: Compensating for low and high tones during low volume. When it's ON, "LOUD" indicator is ON.
2 Enter Audio Control mode

Press the [VOL] knob.

5 Exit Audio Setup mode
3 Select the Audio item for adjustment

Speaker Setting

Fine-tuning so that the System Q value is optimal when setting the speaker type.

4 Adjust the Audio item

Turn the [VOL] knob. Adjustment Item Bass level Middle level Treble level Balance Fader Display "BAS L" "MID L" "TRE L" "BAL" "FAD" Range 8 +++8 Left 15 Right 15 Rear 15 Front 15

Speech and Music include the Program type shown below. Music: No.11 16, Speech: No.2 10, 17 24, 30 The Program Type can be put in the [1] [6] button memory and called up quickly. Refer to the <Program Type preset> (page 14). The display language can be changed. Refer to <Changing Language for PTY Function> (page 15).

1 Enter PTY mode

Press the Control knob. During PTY mode the "PTY" indicator is ON.
This function cant be used during a traffic bulletin or AM reception.
2 Select the Program Type
Push the Control knob to [FM] or [AM]. Each time the knob is pushed, the Program Type switches as shown below. No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31 Program Type Speech News Current Affairs Information Sport Education Drama Culture Science Varied Pop Music Rock Music Easy Listening Music Light Classical Serious Classical Other Music Weather Finance Childrens programs Social Affairs Religion Phone In Travel Leisure Jazz Music Country Music National Music Oldies Music Folk Music Documentary Music Display "SPEECH" "NEWS" "AFFAIRS" "INFO" "SPORT" "EDUCATE" "DRAMA" "CULTURE" "SCIENCE" "VARIED" "POP M" "ROCK M" "EASY M" "LIGHT M" "CLASSICS" "OTHER M" "WEATHER" "FINANCE" "CHILDREN" "SOCIAL" "RELIGION" "PHONE IN" "TRAVEL" "LEISURE" "JAZZ" "COUNTRY" "NATION M" "OLDIES" "FOLK M" "DOCUMENT" "MUSIC"
3 Search for the selected Program Type
station Push the Control knob to [4] or []. When you want to search for other stations, push [4] or [] of the Control knob again.
When the selected Program Type isnt found, "NO PTY" is displayed. Select another Program Type.

4 Exit PTY mode

Program Type preset
Putting the Program Type in the Preset button memory and calling it up quickly.
Presetting the Program Type
1 Select the Program Type to preset
Refer to <PTY (Program Type)> (page 14).
2 Preset the Program Type
Press the desired [1] [6] button for at least 2 seconds.
Calling up the preset Program Type
2 Call up the Program Type

Changing Language for PTY Function
Selecting the Program Type display language.
2 Enter Changing Language mode

Press the [TI] button.

3 Select the language
Push the Control knob to [FM] or [AM]. Each time the knob is pushed, the language switches as shown below. Language English French German Display "ENGLISH" "FRENCH" "GERMAN"
4 Exit Changing Language mode
CD/Audio file/External disc control features
VOL AUD SET UP Q MENU OFF SCAN RDM REP F.SEL

RDM/ 3

F.SEL M.RDM

Disc number

IN indicator

Track number

Track time
Playing CD & Audio file
When a disc is inserted Press the [SRC] button. Select the "CD" display.
When a CD is inserted, the "IN" indicator is ON.
Function of the KDC-W4531

Playing External Disc

Playing discs set in the optional accessory disc player connected to this unit. Press the [SRC] button. Select the display for the disc player you want. Display examples: Display "CD CH" "MD CH" Disc player CD changer MD changer
Pause and play Press the control knob. Each time the knob is pressed, it pauses and plays. Eject the CD Press the [0] button.
Refer to <Playable Audio file> (page6) for the Audio file by models which can be played.
Pause and play Press the Control knob. Each time the knob is pressed, it pauses and plays.
Disc 10 is displayed as "0". The functions that can be used and the information that can be displayed will differ depending on the external disc players being connected.
Fast Forwarding and Reversing
Fast Forwarding Hold down on [] of the Control knob. Release your finger to play the disc at that point. Reversing Hold down on [4] of the Control knob. Release your finger to play the disc at that point.
The sound is not output while the Audio file is played.

Scan Play

Playing the first part of each song on the disc you are listening to and searching for the song you want to listen to.

1 Start Scan Play

Press the [SCAN] button. "TRAC SCN" (CD), "FILE SCN" (Audio file) is displayed.
2 Release it when the song you want to listen
to is played Press the [SCAN] button.

Track/File Search

Searching for a song on the disc or in the Audio file folder. Push the Control knob to [4] or [].

Random Play

Playing all the songs on the disc in random order. Press the [RDM] button. Each time the button is pressed, Random Play turns ON and OFF. When its ON, "DISC RDM" (CD), "FOLD RDM" (Audio file) is displayed.
When the Control knob is pushed to [], the next song select starts.
Function of disc changer/ Audio file
Disc Search/Folder Search
Selecting the disc set in the Disc changer or the folder recorded on the Audio file media. Push the Control knob to [AM] or [FM].
Track/File/Disc/Folder Repeat
Replaying the song, disc in the Disc changer or Audio file folder youre listening to. Press the [REP] button. Each time the button is pressed, the Repeat Play switches as shown below.

Function of disc changer

Magazine Random Play
Play the songs on all the discs in the disc changer in random order. Press the [M.RDM] button. Each time the button is pressed, the Magazine Random Play turns ON and OFF. When its ON, "MGZN RDM" is displayed.
In CD & External disc source
Repeat play Track Repeat Disc Repeat (In Disc Changer) OFF Display "TRAC REP" "DISC REP" "REP OFF"

In Audio file source

Repeat play File Repeat Folder Repeat OFF Display "FILE REP" "FOLD REP" "REP OFF" English |
Function of the KDC-W4531/W4031/W409/W431G Function of Audio file

Folder Select

Quickly selecting the folder you want to listen to.
1 Enter Folder Select mode
Press the [F.SEL] button. "F-SELECT" is displayed. During Select mode the folder information is displayed as shown below. Folder name display Displays the current folder name.

When the Security Code function is activated, it cant be released. Note, your Security Code is the 4 digit number entered in your "Car Audio Passport" in this package.
Number of times the incorrect code was input 3 4
Input prohibited time 5 minutes 1 hour 24 hours

2 Enter Menu mode

Press the [MENU] button for at least 1 second. When "MENU" is displayed, "SECURITY" is displayed.

In Standby mode

Touch Sensor Tone
Setting the operation check sound (beep sound) ON/OFF. Display "BEEP ON" "BEEP OFF" Setting Beep is heard. Beep canceled.
3 Enter Security Code mode
Press the Control knob for at least 2 seconds. When "ENTER" is displayed, "CODE" is displayed.
4 Select the digits to enter
5 Select the Security Code numbers
6 Repeat steps 4 and 5, and complete the

Security Code.

Manual Clock Adjustment
This adjustment can be done when the <Synchronize Clock> (page 21) is set as OFF (KDC-W4531/W4031/ W409/3031A/3031G/309A/309G).
7 Confirm the Security Code
Press the Control knob for at least 3 seconds. When "RE-ENTER" is displayed, "CODE" is displayed.
8 Do the step 4 through 7 step operation, and
reenter the security code. "APPROVED" is displayed. The Security Code function activates.
If you enter a Code different from your Security Code, you have to start over from step 4.
1 Select Clock Adjustment mode
Push the Control knob to [FM] or [AM]. Select the "CLK ADJ" display.
2 Enter Clock Adjust mode
Press the Control knob for at least 2 seconds. The clock display blinks.

3 Adjust the hours

Push the Control knob to [FM] or [AM]. Adjust the minutes Push the Control knob to [4] or [].
Press the Reset button and when its removed from the battery power source
1 Turn the power ON. 2 Do the step 4 through 7 step operation, and
reenter the security code.
4 Exit Clock adjustment mode

| English

Function of the KDC-W4531/W4031/W409/3031A/ 3031G/309A/309G In Standby mode
Synchronizing the RDS station time data and this units clock. Display "SYNC ON" "SYNC OFF" Setting Synchronizes the time. Adjust the time manually.
"NEWS 90M" When "NEWS 00M" "NEWS 90M" is set, the News Bulletin Interrupt function is ON. When its ON, the "NEWS " is displayed. When the news bulletin starts, "NEWS" is displayed, and it switches to the news bulletin.

If you choose the "20M" setting, further news bulletins will not be received for 20 minutes once the first news bulletin is received. The news bulletin volume is the same level that was set for <Traffic Information> (page 13). This function is only available if the desired station sends PTY-code for news bulletin or belongs to <Enhanced Other Network>-Network sending PTYcode for news bulletin. When the News Bulletin Interrupt function is ON, it switches to an FM station.
It takes 3 to 4 minutes to synchronize the clock.
DSI (Disabled System Indicator)
A red indicator will blink on the unit after the faceplate is removed, warning potential thieves. Display "DSI ON" "DSI OFF" Setting LED flashes. LED OFF.

In Tuner mode

Local Seek
Function of the KDC-W4531/W4031/W409 In Standby mode

Selectable Illumination

Selecting the button illumination color as green or red. Display "KEY RED" "KEY GRN" Setting The illumination color is red. The illumination color is green.
Only stations whose reception is good are searched for in auto seek tuning. Display "LO.S OFF" "LO.S ON" Setting The local seek function is OFF. The local seek function is ON.
Function of the KDC-W4531/W4031/W409/3031A/ 3031G/309A/309G In Tuner mode Function of the KDC-W4531/W4031/W409/3031A/ 3031G/309A/309G
Sets the tuning mode. Tuning mode Auto seek Preset station seek Manual Display "AUTO 1" "AUTO 2" "MANUAL" Operation Automatic search for a station. Search in order of the stations in the Preset memory. Normal manual tuning control.
News Bulletin with Timeout Setting
It switches automatically when a news bulletin starts even if the radio isnt being listened to. Also, the time interval when interrupt is prohibited can be set.

Synchronize Clock

Display and Setting "NEWS OFF" "NEWS 00M"
Function of the KDC-W4531/W4031/W409/3031A/ 3031G/309A/309G
Display "ATPS ON" "ATPS OFF" Setting The Auto TP Seek Function is ON. The Auto TP Seek Function is OFF.
AF (Alternative Frequency)
When poor reception is experienced, automatically switch to another frequency broadcasting the same program in the same RDS network with better reception. Display "AF ON" "AF OFF" Setting The AF function is ON. The AF function is OFF.

In FM reception

Monaural Reception
Noise can be reduced when stereo broadcasts are received as monaural. Display "MONO OFF" "MONO ON" Setting The monaural reception is OFF. The monaural reception is ON.

When the AF function is ON, the "RDS" indicator is ON.
When no other stations with stronger reception are available for the same program in the RDS network, you may hear the incoming broadcast in bits and snatches. Turn OFF the AF function in such a case.
Auxiliary Input Display Setting
For selecting the display when switched to Auxiliary input source.
Restricting RDS Region (Region Restrict Function)
You can choose whether or not to restrict the RDS channels, received with the AF function for a particular network, to a specific region. Display "REG ON" "REG OFF" Setting The Region Restrict Function is ON. The Region Restrict Function is OFF.
1 Select Auxiliary input source
Press the [SRC] button. Select the "AUX EXT" display.
3 Select Auxiliary input display setting mode
Push the Control knob to [FM] or [AM]. Select the "NAME SET" display.
4 Enter Auxiliary input display setting mode
Without restricting AF function to the specified region and network, it sets up to search the station with good reception in the same RDS network.
Press the Control knob for at least 2 seconds. The presently selected Auxiliary input display is displayed.
5 Select the Auxiliary input display
Push the Control knob to [4] or []. Each time the knob is pushed, the display switches as shown below. "AUX EXT" "TV" "DVD" "VIDEO" "GAME" "PORTABLE"

Auto TP Seek

When the TI function is ON and poor reception conditions are experienced when listening to a traffic information station, another traffic information station with better reception will be searched for automatically.
6 Exit Auxiliary input display setting mode
Function of the KDC-W4531/W4031/W409/W431G In Standby mode
When operation stops for 10 seconds, the name at that time is registered, and the Auxiliary input display setting mode closes.

CD Read Setting

When there is a problem on playing a CD with special format, this setting play the CD by force. Display "CD READ1" "CD READ2" Setting Play CD and MP3/WMA. Play CD by force.

Text Scroll

Setting the displayed text scroll. Display "SCL MANU" "SCL AUTO" Setting Doesnt scroll. Scrolls when the display changes.
Setting "CD READ2" cannot play MP3/WMA. Some music CDs may not be played back even in the "CD READ2" mode.
The text scrolled is shown below. - CD text - Folder name/ File name/ Song title/ Artist name/ Album name - MD title - Radio text
Demonstration mode Setting
Sets the demonstration mode.
1 Select the Demonstration mode
Push the Control knob to [FM] or [AM]. Select the "DEMO" display.

Power OFF Timer

Setting the timer to turn this units power OFF automatically when Standby mode continues. Using this setting can save the vehicles battery power. Display "OFF " "OFF 20M" (Original setting) "OFF 40M" "OFF 60M" Setting Power OFF Timer function is OFF. Turns the power OFF after 20 minutes. Turns the power OFF after 40 minutes. Turns the power OFF after 60 minutes.
2 Set the Demonstration mode
Press the Control knob for at least 2 seconds. Each time the knob is pressed at least 2 seconds, the Demonstration mode switches as shown below. Display "DEMO ON" "DEMO OFF" Setting The Demonstration mode function is ON. Exit Demonstration mode (Normal mode).
This setting is done after setting <Security Code> (page 20).
Accessories/ Installation Procedure
Accessories 1..1 2..2 3..1 Installation Procedure
1. To prevent short circuits, remove the key from the ignition and disconnect the - terminal of the battery. 2. Make the proper input and output wire connections for each unit. 3. Connect the wire on the wiring harness. 4. Take Connector B on the wiring harness and connect it to the speaker connector in your vehicle. 5. Take Connector A on the wiring harness and connect it to the external power connector on your vehicle. 6. Connect the wiring harness connector to the unit. 7. Install the unit in your car. 8. Reconnect the - terminal of the battery. 9. Press the reset button.
If your vehicles ignition does not have an ACC position, or if the ignition wire is connected to a power source with constant voltage such as a battery wire, the power will not be linked with the ignition (i.e., it will not turn on and off along with the ignition). If you want to link the units power with the ignition, connect the ignition wire to a power source that can be turned on and off with the ignition key. If the fuse blows, first make sure that the wires have not caused a short circuit, then replace the old fuse with one with the same rating. Insulate unconnected wires with vinyl tape or other similar material. To prevent short circuits, also do not remove the caps on the ends of the unconnected wires or the terminals. Connect the speaker wires correctly to the terminals to which they correspond. The unit may receive damage or fail to work if you share the - wires and/or ground them to any metal part in the car. After the unit is installed, check whether the brake lamps, indicators, wipers, etc. on the car are working properly. If the console has a lid, make sure to install the unit so that the faceplate does not hit the lid when closing and opening. Mount the unit so that the mounting angle is 30 or less.

If the power is not turned ON (or it is ON, but will be OFF immediately), the speaker wire may have a short-circuit or touched the chasis of the vehicle and the protection function may have been activated. Therefore, the speaker wire should be checked. If your car is not prepared for this special connectionsystem, consult your Kenwood dealer. Only use antenna conversion adapters (ISO-JASO) when the antenna cord has an ISO plug. Make sure that all wire connections are securely made by inserting jacks until they lock completely.
Connecting Wires to Terminals
KDC-W4531 A To Steering remote B To KENWOOD disc changer/ External optional accessory KDC-W4031/ KDC-W431G W409/3031A/ 3031G/309A/309G To Steering remote

REMO. CONT

Rear left output (White)/ Rear right output (Red)
To connect these leads, refer to the relevant instruction manuals.
Antenna Cord (ISO) FM/AM antenna input Wiring harness (Accessory1) Antenna Conversion Adaptor (ISOJASO) (Accessory3)

Fuse (10A)

TEL mute wire (Brown)
Connect to the terminal that is grounded when either the telephone rings or during conversation. To connect the KENWOOD navigation system, consult your navigation manual.
If no connections are made, do not let the wire come out from the tab. Power control/ Motor antenna control wire (Blue/White)

P.CONT ANT.CONT

Battery wire (Yellow) Ignition wire (Red)
Connect either to the power control terminal when using the optional power amplifier, or to the antenna control terminal in the vehicle.
See next page A7 Pin (Red) A4 Pin (Yellow)

Connector A

Connector B

Connector Function Guide

Pin Numbers for ISO Connectors External Power Connector A-4 A-5 A-7 A-8 Speaker Connector B-1 B-2 B-3 B-4 B-5 B-6 B-7 B-8 Cable Colour Functions
2WARNING Connecting the ISO Connector
The pin arrangement for the ISO connectors depends on the type of vehicle you drive. Make sure to make the proper connections to prevent damage to the unit. The default connection for the wiring harness is described in 1 below. If the ISO connector pins are set as described in 2 or 3, make the connection as illustrated. Please be sure to reconnect the cable as shown 2 below to install this unit to the Volkswagen vehicles etc.

Tuner source

Radio reception is poor. The car antenna is not extended. Pull the antenna out all the way. The antenna control wire is not connected. Connect the wire correctly, referring to the section on <Connecting Wires to Terminals>.
Disc source MP3/WMA source
"AUX EXT" is displayed without achieving External disc control mode. Unsupported disc changer is connected. Use the disc changer mentioned in the <About CD players/disc changers connected to this unit> (page 3) of the section on <Safety precautions>. The specified disc does not play, but another one plays instead. The specified CD is quite dirty. Clean the CD. The disc is loaded in a different slot from that specified. Eject the disc magazine and check the number for the specified disc. The disc is severely scratched. Try another disc instead. A CD ejects as soon as it is loaded. The CD is quite dirty. Clean the CD, referring to the CD cleaning of the section on <About CDs> (page 5). Cant remove disc. The cause is that more than 10 minutes has elapsed since the vehicle ACC switch was turned OFF. The disc can only be removed within 10 minutes of the ACC switch being turned OFF. If more than 10 minutes has elapsed, turn the ACC switch ON again and press the Eject button. The disc wont insert. Theres already another disc inserted. Press the [0] button and remove the disc. Direct Search cant be done. Another function is ON. Turn Random Play or other functions OFF. Track Search cant be done. For the discs/folders first or last song. For each disc/folder, Track Search cant be done in the backward direction for the first song or in the forward direction for the last song.
Cannot play an MP3/WMA. The media is scratched or dirty. Clean the media, referring to the CD cleaning of the section on <About CDs> (page 5). The sound skips when an MP3/WMA is being played. The media is scratched or dirty. Clean the media, referring to the CD cleaning of the section on <About CDs> (page 5). The recording condition is bad. Record the media again or use another media. The MP3/WMA track time isnt displayed correctly. -- There are times when it isnt displayed correctly according to the MP3/WMA recording conditions.

Audio section

Maximum output power KDC-W4531/W4031/W409 : 50 W x 4 KDC-3031A/3031G/309A/309G/W431G : 45 W x 4 Output power (DIN 45324, +B=14.4V) KDC-W4531/W4031/W409 : 30 W x 4 KDC-3031A/3031G/309A/309G/W431G : 28 W x 4 Tone action Bass : 100 Hz 10 dB Middle : 1 kHz 10 dB Treble : 10 kHz 10 dB Preout level / Load (during disc play) : 2000 mV/10 k Preout impedance (during disc play) : 600

MW tuner section

Frequency range (9 kHz space) : 531 kHz 1611 kHz Usable sensitivity (S/N = 20dB) : 25 V

LW tuner section

Frequency range : 153 kHz 281 kHz Usable sensitivity (S/N = 20dB) : 45 V
General CD player section
Laser diode : GaAlAs Digital filter (D/A) : 8 Times Over Sampling D/A Converter : 1 Bit Spindle speed : rpm (CLV) Wow & Flutter : Below Measurable Limit Frequency response (1 dB) : 10 Hz 20 kHz Total harmonic distortion (1 kHz) : 0.01 % Signal to Noise ratio (1 kHz) KDC-W4531/W4031/W409/W431G: 105 dB KDC-3031A/3031G/309A/309G: 93 dB Dynamic range : 93 dB Channel separation : 85 dB Operating voltage (11 16V allowable) : 14.4 V Current consumption : 10 A Installation Size (W x H x D) : 182 x 53 x 155 mm Weight : 1.4 kg