CD-RECEIVER
KDC-MV6521
INSTRUCTION MANUAL
KDC-M6021
KDC-6021
KDC-5021
KDC-5021V
KDC-506
B64-2249-00 (E2W)
Contents
Auto Memory Entry
Safety precautions......................3 CD/MP3/External disc control
features ..................................18 AF (Alternative Frequency)
About RDS ..................................5
Playing CD & MP3 Restricting RDS Region
Notes on playing MP3 ................6
Playing External Disc (Region Restrict Function)
About CDs...................................8
Fast Forwarding and Reversing Auto TP Seek
General features .........................9 Track Search Monaural Reception
Power Album Search Text Scroll
Selecting the Source Track/Album Repeat Power OFF Timer
Volume Track Scan
Accessories...............................30
Attenuator Random Play
Installation Procedure ..............30
Loudness Magazine Random Play
Connecting Wires to
System Q Album Select
Terminals................................31
Audio Control Disc Naming (DNPS)
Installation ................................32
Speaker Setting Text/Title Scroll
TEL Mute
Troubleshooting Guide .............34
Menu system.............................23
Switching Display
Menu System
Specifications ...........................38
Auxiliary Input Display Setting
Security Code
Non-fading Output
Touch Sensor Tone
Theft Deterrent Faceplate
Manual Clock Adjustment
Tuner features ...........................14 Synchronize Clock
Tuning DSI (Disabled System Indicator)
Station Preset Memory Selectable Illumination
Auto Memory Entry Switching Graphic Display
Preset Tuning Switching Display Type
Illumination Color Setting
RDS features .............................15
Contrast Adjustment
Traffic Information
Dimmer
Radio Text Scroll
Switching preout
PTY (Program Type)
News Bulletin with Timeout Setting
Program Type preset
Local Seek
Changing Language for PTY Function
Tuning Mode
 2 
Safety precautions
IMPORTANT INFORMATION
2WARNING 2CAUTION
About the disc changer/CD player to
To prevent injury and/or fire, take the To prevent damage to the machine,
be connected:
following precautions: take the following precautions:
To connect a disc changer having the "O-N"
" Insert the unit all the way until it is fully " Make sure to ground the unit to a negative
switch to this unit, set the "O-N" switch to "N".
locked in place. Otherwise it may fly out of 12V DC power supply.
To connect a disc changer having no "O-N"
place during collisions and other jolts.
" Do not open the top or bottom covers of the switch to this unit, the converter cord CA-
" When extending the ignition, battery, or unit. DS100 and/or switching adapter KCA-S210A
ground wires, make sure to use automotive- are required as options.
" Do not install the unit in a spot exposed to
grade wires or other wires with a 0.75mm2 direct sunlight or excessive heat or humidity. A disc changer doesn't work when it is
(AWG18) or more to prevent wire connected without using these options.
Also avoid places with too much dust or the
deterioration and damage to the wire If a model with no "O-N" switch is connected,
possibility of water splashing.
coating. some unavailable functions and information
" Do not subject the faceplate to excessive
that cannot be displayed are generated.
" To prevent short circuits, never put or leave
shock, as it is a piece of precision
Note that none of the KDC-C100, KDC-C302,
any metallic objects (e.g., coins or metal
equipment.
C205, C705, and non-Kenwood CD changers
tools) inside the unit.
" When replacing a fuse, only use a new one
can be connected.
" If the unit starts to emit smoke or strange
with the prescribed rating. Using a fuse with
You can damage both your unit and the CD
smells, turn off the power immediately and
the wrong rating may cause your unit to
changer if you connect them incorrectly.
consult your Kenwood dealer.
malfunction.
" Make sure not to get your fingers caught
" To prevent short circuits when replacing a
Do Not Load 8-cm (3-in.) CDs in the CD
between the faceplate and the unit.
fuse, first disconnect the wiring harness.
slot
" Be careful not to drop the unit or subject it to
" Do not place any object between the
If you try to load an 8-cm CD with its adapter
strong shock.
faceplate and the unit.
into the unit, the adapter might separate from
The unit may break or crack because it
" During installation, do not use any screws
the CD and damage the unit.
contains glass parts.
except for the ones provided. The use of
" Do not touch the liquid crystal fluid if the
improper screws might result in damage to
LCD is damaged or broken due to shock. The
the main unit.
liquid crystal fluid may be dangerous to your
" Do not apply excessive force to the open
health or even fatal.
faceplate or place objects on it. Doing so will
If the liquid crystal fluid from the LCD
cause damage or breakdown.
contacts your body or clothing, wash it off
with soap immediately.
 3 
Safety precautions
" The illustrations of the display and the panel
Cleaning the Faceplate Terminals
NOTE
appearing in this manual are examples used
If the terminals on the unit or faceplate get
" If you experience problems during to explain more clearly how the controls are
dirty, wipe them with a dry, soft cloth.
installation, consult your Kenwood dealer. used. Therefore, what appears on the display
in the illustrations may differ from what
" If the unit fails to operate properly, press the
Cleaning the Unit
appears on the display on the actual
Reset button. The unit returns to factory
If the faceplate of this unit is stained, wipe it
equipment, and some of the illustrations on
settings when the Reset button is pressed.
with a dry soft cloth such as a silicon cloth.
the display may represent something
After you press the reset button, the Mask
If the faceplate is stained badly, wipe the stain
impossible in actual operation.
Key will be needed to restart the unit. If the
off with a cloth moistened with neutral
unit still fails to operate properly after the
cleaner, then wipe neutral detergent off.
Reset button has been pressed, contact your
Lens Fogging
Applying spray cleaner directly to the unit may
local KENWOOD dealer for assistance.
Right after you turn on the car heater in cold
affect its mechanical parts. Wiping the
" Press the reset button if the Disc auto
weather, dew or condensation may form on
faceplate with a hard cloth or using a volatile
changer fails to operate correctly. Normal
the lens in the CD player of the unit. Called
liquid such as thinner or alcohol may scratch
operation should be restored.
lens fogging, CDs may be impossible to play.
the surface or erases characters.
In such a situation, remove the disc and wait
OFF
DAB
PTY MENU
for the condensation to evaporate. If the unit
Cleaning the CD Slot
still does not operate normally after a while,
DISC
As dust can accumulate in the CD slot, clean it
SCAN RDM REP M.RDM DISP NAME TI GSM consult your Kenwood dealer.
AUD
NF occasionally. Your CDs can get scratched if you
LOUD
put them in a dusty CD slot.
Reset button
" Characters in the LCD may become difficult
to read in temperatures below 41 ÚF (5 ÚC).
" We strongly recommend the use of the
Code Security function (see p.24) to prevent
theft.
 4 
About RDS
The marking of products using lasers RDS (Radio Data System)
When listening to an RDS station, the program
(Except for some areas)
service name of the station is displayed,
advising you quickly which station is being
CLASS 1
received.
LASER PRODUCT
RDS (Radio Data System) stations also
transmit alternative frequency data for the
The label is attached to the chassis/case and
same station. When you are making long trips,
says that the component uses laser beams
this function automatically switches to the
that have been classified as Class 1. It means
particular frequency with the best reception
that the unit is utilizing laser beams that are of
for the particular network of stations that you
a weaker class. There is no danger of
want to listen to. The data is automatically
hazardous radiation outside the unit.
stored, allowing you to switch quickly to
another RDS stations, broadcasting the same
program, that has better reception. These
include stations stored in the station preset
memory that you often listen to.
Enhanced Other Network
Stations that offer
also transmit information about other RDS
stations that have traffic information. When
you are tuned to a station that is not
transmitting traffic information, but another
RDS station starts transmitting a traffic
bulletin, the tuner automatically switches to
the other station for the duration of the
bulletin.
Alarm
When an emergency transmission (announcing
disasters, etc.) is sent, all current functions are
interrupted to allow the warning to be
received.
 5 
Notes on playing MP3
This unit can play MP3(MPEG1, 2, 2.5 Audio Layer 3). Note,
Entering ID3 tag
however, that the MP3 recording media and formats acceptable
The Displayable ID3 tag is ID3 version
are limited. When writing MP3, pay attention to the following
1.x.
restrictions.
For the character code, refer to the List
of Codes.
Acceptable media
The MP3 recording media acceptable to this unit are CD-ROM, CD-R,
Entering file and folder names
and CD-RW.
The code list characters are the only
When using CD-RW, do full format not quick format to prevent
file names and folder names that can
malfunction.
be entered and displayed.
Acceptable medium formats If you use any other character for
The following formats are available for the media used in this unit. The entry, the file and folder names are not
maximum number of characters used for file name including the displayed correctly. They may neither be displayed correctly depending
delimiter (".") and three-character extension are indicated in on the CD writer used.
parentheses. The unit recognizes and plays only those MP3 which have the MP3
extension (.MP3).
" ISO 9660 Level 1 (12 characters)
" ISO 9660 Level 2 (31 characters) A file with a name entered with characters not on the code list may not
" Joliet (64 characters; up to 12 characters are displayed on this unit) play correctly.
" Romeo (128 characters)
Writing files into a medium
Up to 200 characters can be displayed in the long file name format.
When a medium containing MP3 data is loaded, the unit checks all the
For a list of available characters, see the instruction manual of the
data on the medium. If the medium contains a lot of folders or non-
writing software and the section Entering file and folder names below.
MP3 files, therefore, it takes a long time until the unit starts playing
The media reproducible on this unit has the following limitations:
MP3.
" Maximum number of directory levels: 8
In addition, it may take time for the unit to move to the next MP3 file
" Maximum number of files per folder: 255
or a Track Search or Album Search may not be performed smoothly.
" Maximum number of characters for folder name: 64
Loading such a medium may produce loud noise to damage the speakers.
" Maximum number of folders: 50
" Do no attempt to play a medium containing a non-MP3 file with
MP3 written in the formats other than the above may not be
the MP3 extension.
successfully played and their file names or folder names are not
The unit mistakes non-MP3 files for MP3 data as long as they
properly displayed.
have the MP3 extension.
" Do not attempt to play a medium containing non MP3.
Settings for your MP3 encoder and CD writer
When you use your CD writer to record MP3 up to the maximum disc
capacity, disable additional writing. For recording on an empty disc up
to the maximum capacity at once, check Disc at Once.
 6 
When a Track Search is executed with file being played ...
MP3 playing order
When selected for play, Album Search, Track Search, or for Album
Operation of the button
Current
Select, files and folders are accessed in the order in which they were
file number
4 Button ó Button
written by the CD writer.
Because of this, the order in which they are expected to be played may Beginning of file
not match the order in which they are actually played. You may be able
to set the order in which MP3 are to be played by writing them onto a
medium such as a CD-R with their file names beginning with play When an Album Search is executed with file being played ...
sequence numbers such as "01" to "99", depending on your CD writer.
Operation of the button
Current
For example, a medium with the following folder/ file hierarchy is
folder number
AM Button FM Button
subject to Album Search, Track Search, or Album Select as shown
below.
Example of a medium's folder/file hierarchy
When Album Select is selected with file being played
to move from folder to folder ...
Operation of the button
Current
folder number
4 Button ó Button AM Button FM Button
Folder
File
Root
Level 1 Level 3
Level 2 Level 4
 7 
About CDs
Handling CDs CD cleaning
" Don t touch the recording surface of the CD. Clean from the center of the disc and move
outward.
Removing CDs
When removing CDs from this unit pull them
" CD-R and CD-RW are easier to damage than
out horizontally.
a normal music CD. Use a CD-R or a CD-RW
after reading the caution items on the
package etc.
CDs that can t be used
" Don t stick tape etc. on the CD.
" CDs that aren t round can t be used.
Also, don t 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 can t be used.
" Don t use CDs without disc mark
Burrs
.
" A CD-R or CD-RW that hasn t been finalized
Burrs
can t be played. (For the finalization process
refer to your CD-R/CD-RW writing software,
and your CD-R/CD-RW recorder instruction
manual.)
CD storage
" Don t place them in direct sunlight (On the
seat or dashboard etc.) and where the
temperature is high.
CD accessories
" Store CDs in their cases.
Don t use disc type accessories.
 8 
General features
ó Release button
u / d SRC FM
Power
Turning ON the Power
OFF
DAB
Press the [SRC] button.
PTY MENU
When the power is ON, the (page 24) is displayed
as "CODE ON" or "CODE OFF".
SCAN RDM REP M.RDM DISP NAME TI GSM
Turning OFF the Power
AUD
NF
Press the [SRC] button for at least 1 second.
LOUD
4 AM / DISP
ATT / Q /
NF
LOUD AUD
Selecting the Source
KDC-MV6521/M6021/6021
Press the [SRC] button.
ATT indicator
Source required Display
Tuner "TUNER"
CD "CD"
External disc "DISC-CH"/"CD2"
Auxiliary input "AUX"
Standby (Illumination only mode) "ALL OFF"
" For Auxiliary input one of the below optional accessories is
necessary.
- KCA-S210A
Speaker Setting indicator SYSTEM Q indicator
- CA-C1AX
- CD changer with an Auxiliary input function installed.
KDC-5021/5021V/506
" This unit automatically turns full power OFF after 20 minutes
ATT indicator
lapses in Standby mode in order to save the vehicles battery.
The time until full power OFF can be set in
(page 29).
Speaker Setting indicator SYSTEM Q indicator
 9 
General features
2 Select the Sound type
Volume
Press the [Q] button.
Increasing Volume
Each time the button is pressed the sound setting switches.
Press the [u] button.
Sound setting Display
Decreasing Volume
Flat "Flat"/ "FLAT"
Press the [d] button.
User memory "User"/ "USER"
Rock "Rock"/ "ROCK"
Pops "Pops"/ "POPS"
Easy "Easy"/ "EASY"
Top 40 "Top40"/ "TOP40"
Attenuator
Jazz "Jazz"/ "JAZZ"
Turning the volume down quickly.
" User memory: The values set on the