Owner
's Manual
CD RECEIVER
DEH-4090MP
English
Thank you for buying this Pioneer product.
Please read through these operating instructions so you will know how to operate
your model properly. After you have finished reading the instructions, keep this man-
ual in a safe place for future reference.
Before You Start
About this unit
4
Visit our website
4
Protecting your unit from theft
4
Removing the front panel 4
Attaching the front panel 5
About the demo mode
5
Use and care of the remote control
5
Installing the battery 5
Using the remote control 5
Operating this unit
What
's What 7
Head unit 7
Remote control 7
Display indication 8
Basic Operations
9
Power ON/OFF 9
Selecting a source 9
Adjusting the volume 9
Tuner
9
Basic Operations 9
Storing and recalling broadcast
frequencies
9
Introduction of advanced
operations
10
Storing the strongest broadcast
frequencies
10
Tuning in strong signals 10
Built-in CD Player
11
Basic Operations 11
Displaying text information on disc 11
Selecting tracks from the track title
list
12
Selecting files from the file name
list
12
Introduction of advanced
operations
13
Selecting a repeat play range 13
Playing tracks in random order 13
Scanning folders and tracks 13
Pausing playback 14
Using compression and BMX 14
Using disc title functions 14
Audio Adjustments
Introduction of audio adjustments
15
Using balance adjustment
15
Using the equalizer
16
Recalling equalizer curves 16
Adjusting equalizer curves 16
Fine-adjusting equalizer curve 16
Adjusting loudness
17
Using subwoofer output
17
Adjusting subwoofer settings 17
Using the high pass filter
18
Boosting the bass
18
Adjusting source levels
18
Initial Settings
Adjusting initial settings
19
Setting the clock
19
Setting the FM tuning step
19
Setting the AM tuning step
19
Switching the warning tone
20
Switching the auxiliary setting
20
Switching the dimmer setting
20
Setting the rear output and subwoofer
controller
20
Switching the feature demo
21
Switching the Ever Scroll
21
Other Functions
Using the AUX source
22
Selecting AUX as the source 22
Setting the AUX title 22
Turning the clock display on or off
22
Contents
En
2
Connections
Important
23
When not connecting a rear speaker lead to
a subwoofer
24
When using a subwoofer without using the
optional amplifier
26
Installation
DIN front/rear mount
28
DIN Front-mount
28
Installation with the rubber bush 28
Removing the unit 28
DIN Rear-mount
29
Installation using the screw holes on
the side of the unit
29
Additional Information
Error messages
30
Handling guideline of discs and player
30
Dual Discs
30
Compressed audio files on the disc
31
Example of a hierarchy 31
Compressed audio compatibility 31
Specifications
33
En
3
Contents
About this unit
CAUTION
! Do not allow this unit to come into contact
with liquids. Electrical shock could result.
Also, damage to this unit, smoke, and over-
heating could result from contact with liquids.
! Keep this manual handy as a reference for op-
erating procedures and precautions.
! Always keep the volume low enough so that
you can hear sounds from outside the vehicle.
! Protect this unit from moisture.
! If the battery is disconnected or discharged,
the preset memory will be erased and must be
reprogrammed.
! If this unit does not operate properly, contact
your dealer or nearest authorized Pioneer Ser-
vice Station.
About WMA
The Windows Media
TM logo printed on the box
indicates that this unit can play back WMA
data.
Windows Media and the Windows logo are tra-
demarks or registered trademarks of Microsoft
Corporation in the United States and/or other
countries.
! This unit may not operate correctly depend-
ing on the application used to encode
WMA files.
About MP3
Supply of this product only conveys a license
for private, non-commercial use and does not
convey a license nor imply any right to use
this product in any commercial (i.e. revenue-
generating) real time broadcasting (terrestrial,
satellite, cable and/or any other media), broad-
casting/streaming via internet, intranets and/
or other networks or in other electronic con-
tent distribution systems, such as pay-audio or
audio-on-demand applications. An indepen-
dent license for such use is required. For de-
tails, please visit
http://www.mp3licensing.com.
Visit our website
Visit us at the following site:
http://pioneer.jp/group/index-e.html
! We offer the latest information about
Pioneer Corporation on our website.
Protecting your unit from
theft
The front panel can be detached to deter theft.
! If the front panel is not detached from the
head unit within five seconds of turning off
the ignition, a warning tone sounds.
! You can turn off the warning tone. See
Switching the warning tone on page 20.
Important
! Handle gently when removing or attaching
the front panel.
! Avoid subjecting the front panel to excessive
shock.
! Keep the front panel out of direct sunlight and
high temperatures.
Removing the front panel
1
Press OPEN to open the front panel.
2
Grip the left side of the front panel and
pull it gently outward.
Take care not to grip it too tightly or to drop
the front panel and protect it from contact
with water or other fluids to prevent perma-
nent damage.
Before You Start
En
4
Section
01
3
Put the front panel into the provided
protective case for safe keeping.
Attaching the front panel
% Reattach the front panel by holding it
upright to the unit and clipping it securely
into the mounting hooks.
About the demo mode
This unit features the feature demo mode.
Important
The red lead (ACC) of this unit should be con-
nected to a terminal coupled with ignition switch
on/off operations. If this is not done, the vehicle
battery may be drained.
Feature demo mode
The feature demo automatically starts when
power to this unit is turned off while the igni-
tion switch is set to ACC or ON. Press
DISP
during feature demo operation to cancel the
feature demo mode. Press
DISP again to start.
Remember that if the feature demo continues
operating when the car engine is turned off, it
may drain battery power.
Use and care of the remote
control
Installing the battery
Slide the tray on the back of the remote con-
trol out and insert the battery with the plus (+)
and minus (
) poles aligned properly.
! When using for the first time, pull out the
film protruding from the tray.
WARNING
Keep the battery out of the reach of children.
Should the battery be swallowed, consult a doc-
tor immediately.
CAUTION
! Use one CR2025 (3 V) lithium battery.
! Remove the battery if the remote control is not
used for a month or longer.
! There is a danger of explosion if the battery is
incorrectly replaced. Replace only with the
same or equivalent type.
! Do not handle the battery with metallic tools.
! Do not store the battery with metallic objects.
! If the battery leaks, wipe the remote control
completely clean and install a new battery.
! When disposing of used batteries, comply
with governmental regulations or environmen-
tal public institutions
' rules that apply in your
country/area.
Using the remote control
Point the remote control in the direction of the
front panel to operate.
! The remote control may not function prop-
erly in direct sunlight.
Before You Start
En
5
Section
01
Before
Y
o
u
Start