Operating Instructions
© 1999 by Sony Corporation
US
FM/AM
Compact Disc
Player
CDX-4250
For installation and connections, see the supplied installation/connections
manual.
Owner's Record
The model and serial numbers are located on the bottom of the unit.
Record the serial number in the space provided below.
Refer to these numbers whenever you call upon your Sony dealer regarding this
product.
Model No. CDX-4250 Serial No.
3-865-649-11 (1)
2
Welcome !
Thank you for purchasing the Sony Compact
Disc Player. This unit lets you enjoy a variety
of features.
Warning
This equipment has been tested and found to
comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide
reasonable protection against harmful
interference in a residential installation. This
equipment generates, uses, and can radiate
radio frequency energy and, if not installed
and used in accordance with the instructions,
may cause harmful interference to radio
communications. However, there is no
guarantee that interference will not occur in a
particular installation. If this equipment does
cause harmful interference to radio or
television reception, which can be determined
by turning the equipment off and on, the user
is encouraged to try to correct the interference
by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the
equipment and receiver.
-- Connect the equipment into an outlet on a
circuit different from that to which the
receiver is connected.
-- Consult the dealer or an experienced radio/
TV technician for help.
You are cautioned that any changes or
modifications not expressly approved in this
manual could void your authority to operate
this equipment.
CAUTION
The use of optical instruments with this
product will increase eye hazard.
3
Location of controls ................................................. 4
Getting Started
Resetting the unit ................................................ 5
Detaching the front panel .................................. 5
Setting the clock .................................................. 6
CD Player
Listening to a CD ................................................ 6
Playing a CD in various modes ........................ 7
Radio
Memorizing stations automatically
-- Best Tuning Memory (BTM) ................... 7
Memorizing only the desired stations ............. 8
Receiving the memorized stations .................... 8
Other Functions
Adjusting the sound characteristics ................. 9
Turning on the clock display
-- Power Select Function .............................. 9
Changing the sound and beep sound .............. 9
Table of Contents
Additional Information
Precautions ......................................................... 10
Maintenance ....................................................... 11
Dismounting the unit ....................................... 11
Specifications ..................................................... 12
Troubleshooting guide ..................................... 13
4
Location of controls
Refer to the pages for details.
1 SEEK/AMS (seek/Automatic Music
Sensor/manual search) control 7, 8
2 MODE (band select) button 7, 8
3 SOURCE (source select) button 6, 7, 8
4 Dial (volume/bass/treble/left-right/
front-rear control) 6, 9
5 SOUND button 6, 9
6 Display window
7 SENS/BTM (sensitivity adjust/Best
Tuning Memory) button 7, 8
8 6 (eject) button 6
9 DSPL (display mode change/time set)
button 6, 8
0 RELEASE (front panel release) button 5,
11
!¡ Reset button (located on the front side
of the unit behind the front panel) 5
!TM OFF button 5, 6, 9
!£ During radio reception:
Number buttons 8
During CD playback:
(1) REPEAT button 7
(2) SHUF button 7
!¢ D-BASS control 9
RELEASE
REPEAT
SEEK/AMS
SOUND
OFF
123456
D - BASS
MODE
SHUF
SOURCE
OFF 1 2
3
CDX-4250
SENS
DSPL
BTM
5
Getting Started
Resetting the unit
Before operating the unit for the first time or
after replacing the car battery, you must reset
the unit.
Remove the front panel and press the reset
button with a pointed object, such as a ball-
point pen.
Reset button
(OFF)
(RELEASE)
Notes
· Pressing the reset button will erase the clock
setting and some memorized program and
memory functions.
· When you connect the power supply cord to the
unit or reset the unit, wait for about 10 seconds
before you insert a disc. If you insert a disc within
these 10 seconds, the unit will not be reset, and
you will have to press the reset button again.
Detaching the front panel
You can detach the front panel of this unit to
protect the unit from being stolen.
1 Press (OFF).
2 Press (RELEASE), then slide the front
panel a little to the left, and pull it off
towards you.
a
b
Notes
· Be sure not to attach the front panel upside
down.
· Do not press the front panel too hard against the
unit when attaching it.
· Do not press too hard or put excessive pressure
on the display window of the front panel.
· Do not expose the front panel to direct sunlight
or heat sources such as hot air ducts, and do not
leave it in a humid place. Never leave it on the
dashboard of a car parked in direct sunlight or
where there may be a considerable rise in
temperature.
Caution alarm
If you turn the ignition key switch to the OFF
position without removing the front panel, the
caution alarm will beep for a few seconds.
If you connect an optional power amplifier and
do not use the built-in amplifier, the beep
sound will be deactivated.
Notes
· Be sure not to drop the panel when detaching it
from the unit.
· If you detach the panel while the unit is still
turned on, the power will turn off automatically
to prevent the speakers from being damaged.
· When carrying the front panel with you, use the
supplied front panel case.
Attaching the front panel
Attach part a of the front panel to part b of
the unit as illustrated, and push the left side
into position until it clicks into position.