Page 1
Specifications
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
22 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than
5 % total harmonic distortion.
3-227-610-11 (1)
CD player section
Signal-to-noise ratio 90 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Laser Diode Properties
Material GaAlAs
Wavelength 780 nm
Emission Duration Continuous
Laser output power Less than 44.6 µW*
* This output is the value measured at a distance of
200 mm from the objective lens surface on the
Optical Pick-up Block.
Tuner section
FM
Tuning range 87.5 – 107.9 MHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity 11 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
Harmonic distortion at 1 kHz
Separation 33 dB at 1 kHz
Frequency response 30 – 15,000 Hz
AM
Tuning range 530 – 1,710 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
68 dB (mono)
0.7 % (stereo),
0.5 % (mono)
Power amplifier section
Outputs Speaker outputs
Speaker impedance 4 – 8 ohms
Maximum power output 45 W × 4 (at 4 ohms)
(sure seal connectors)
General
Outputs Audio output
Tone controls Bass ±10 dB at 20 Hz
Power requirements 12 V DC car battery
Dimensions Approx.
Mounting dimensions Approx. 182 × 53 × 161 mm
Mass Approx. 1.2 kg (2 lb. 10 oz.)
Supplied accessory Parts for installation and
Design and specifications are subject to change
without notice.
Power amplifier control
Power antenna relay control
Treble ±10 dB at 20 kHz
(negative earth)
178
× 50 ×
1
/8 × 2 × 7 in.)
(7
(w/h/d)
1
/4 × 2 1/8 × 6
(7
(w/h/d)
connections (1 set)
176 mm
3
/8 in.)
FM/AM
Compact Disc
Player
Operating Instructions
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-L250 Serial No.
Getting Started
Resetting the unit
Before operating the unit for the first time or
after replacing the car battery, you must reset
the unit.
Press the reset button with a pointed object,
such as a ball-point pen.
Reset button
Note
Pressing the reset button will erase the clock setting
and some stored contents.
Setting the clock
The clock uses a 12-hour digital indication.
Example: To set the clock to 10:08
1 Press (DSPL) for 2 seconds.
The hour indication flashes.
1 Press either side of the volume +/–
button to set the hour.
2 Press (SEL).
The minute indication flashes.
3 Press either side of the volume +/–
button to set the minute.
2 Press (DSPL).
The clock starts. After the clock setting is
completed, the display returns to normal
play mode.
For installation and connections, see the supplied installation/connections
manual.
CDX-L250
Sony Corporation 2001 Printed in Korea
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.
Welcome !
Thank you for purchasing this Sony Compact
Disc Player. You can enjoy its various features.
CAUTION
The use of optical instruments with this product
will increase eye hazard.
Page 2
Additional Information
Precautions
•If your car was parked in direct sunlight, allow
the unit to cool off before operating it.
•Power antennas will extend automatically
while the unit is operating.
If you have any questions or problems
concerning your unit that are not covered in this
manual, please consult your nearest Sony dealer.
Moisture condensation
On a rainy day or in a very damp area, moisture
condensation may occur inside the lenses and
display of the unit. Should this occur, the unit
will not operate properly. In such a case, remove
the disc and wait for about an hour until the
moisture has evaporated.
To maintain high sound quality
Be careful not to splash juice or other soft drinks
onto the unit or discs.
Notes on discs
•To keep the disc clean, do not touch the
surface. Handle the disc by its edge.
•Keep your discs in their cases or disc
magazines when not in use. Do not subject the
discs to heat/high temperature. Avoid leaving
them in parked cars or on dashboards/rear
trays.
•Do not attach labels, or use discs with sticky
ink/residue. Such discs may stop spinning
when used, causing a malfunction, or may ruin
the disc.
Notes on CD-R discs
•You can play CD-Rs (recordable CDs)
designed for audio use on this unit.
Look for this mark to distinguish CD-Rs for
audio use.
This mark denotes that a disc is not for audio
use.
•Some CD-Rs (depending on the equipment
used for its recording or the condition of the
disc) may not play on this unit.
•You cannot play a CD-R that is not finalized*.
* A process necessary for a recorded CD-R disc to be
played on the audio CD player.
Maintenance
Fuse replacement
When replacing the fuse, be sure to use one
matching the amperage rating stated on the
original fuse. If the fuse blows, check the power
connection and replace the fuse. If the fuse
blows again after replacement, there may be an
internal malfunction. In such a case, consult
your nearest Sony dealer.
•Discs with special shapes (heart-shaped discs,
octagonal discs, etc.) cannot be played on this
unit. Attempting to do so may damage the
unit. Do not use such discs.
•You cannot play 8cm (3in.) CDs.
•Before playing, clean the discs with a
commercially available cleaning cloth. Wipe
each disc from the center out. Do not use
solvents such as benzine, thinner,
commercially available cleaners, or antistatic
spray intended for analog discs.
Removing the unit
1 Insert the supplied tool between the unit
and the frame, and rotate 90° to release
the hidden mounting spring. Repeat on
the opposite side and remove the frame.
2 Insert a flathead screwdriver between the
bracket and mounting spring. Gently pry
the spring toward the unit while pulling
the unit out a little. Repeat on the
opposite side and remove the unit.
Fuse (10 A)
Warning
Never use a fuse with an amperage rating
exceeding the one supplied with the unit as this
could damage the unit.
10 mm (13/32 in.)
90°
4 mm (
3
/16 in.)
Page 3
Location of controls
Refer to the pages listed for details.
Radio
The unit can store up to 6 stations per band
(FM1, FM2, FM3, and AM1, AM2).
Caution
When tuning in stations while driving, use Best
Tuning Memory to prevent accidents.
Storing only the desired
stations
You can manually preset the desired stations on
any chosen number button.
SOURCE
SRC
MODE
SEL
ATT
SENS
1 Volume +/– button
2 MODE button
3 SRC (SOURCE) (TUNER/CD) button
4 SEL (select) button
5 Display window
6
MBP (My Best sound Position) button
7 D (D-BASS) button
8 Z (eject) button
9 Reset button
DISC
1
REP SHUF BL SKIP ATA MTL
q; ATT (attenuate) button
qa SENS button
qs Number buttons
qd BTM (Best Tuning Memory) button
qf DSPL (display mode change) button
qg OFF button*
qh SEEK/AMS +/– button
* Warning when installing in a car
without an ACC (accessory) position on
the ignition key switch
Be sure to press (OFF) on the unit for 2
seconds to turn off the clock display after
turning off the engine.
Otherwise, the clock display does not turn off
and this causes battery drain.
CDX-L250
(3) REP
(4) SHUF
65432
BTM DSPL
MBP
D-BASS
D
OFF
SEEK
AMS
Storing stations
automatically
— Best Tuning Memory (BTM)
The unit selects the stations with the strongest
signals within the selected band, and stores
them in the order of their frequency.
1 Press (SRC) repeatedly to select the
radio.
2 Press (MODE) repeatedly to select the
band.
3 Press (BTM) for 2 seconds.
The unit stores stations in the order of their
frequencies on the number buttons. A beep
sounds when the setting is stored.
Notes
• If only a few stations can be received due to weak
signals, some number buttons will retain their
former settings.
• When a number is indicated in the display, the unit
starts storing stations from the one currently
displayed.
1 Press (SRC) repeatedly to select the
radio.
2 Press (MODE) repeatedly to select the
band.
3 Press either side of (SEEK/AMS) to tune in
the station that you want to store.
4 Press the desired number button ((1) to
(6)) until “MEM” appears.
The number button indication appears in the
display.
Note
If you try to store another station on the same
number button, the previously stored station will be
erased.
CD Player
Playing a disc
Insert the disc (labeled side up).
Playback starts automatically.
If a disc is already inserted, press (SRC)
repeatedly until “CD” appears to start playback.
To Press
Stop playback Z or (OFF)
Eject the disc Z
Skip tracks (SEEK/AMS) (./>)
– Automatic [once for each track]
Music Sensor
Fast-forward/ (SEEK/AMS) (m/M)
reverse [hold to desired point]
– Manual Search
Note
When the last track on the disc is over, playback
restarts from the first track of the disc.
Display items
When the disc/track changes, any prerecorded
title of the new disc/track is automatically
displayed.
Displayable items
•Clock
Source
Track number
To Press
Switch display (DSPL)
item
•Elapsed playing time
Playing tracks repeatedly
— Repeat Play
The current track will repeat itself when it
reaches the end.
During playback, press (3) (REP)
repeatedly until “REP” indicator appears
in the display.
Repeat Play starts.
To return to normal play mode, press (3) (REP)
again.
Other Functions
Adjusting the sound
characteristics
You can adjust the bass, treble, balance, and
fader.
The bass and treble levels can be stored
independently for each source.
1 Select the item you want to adjust by
pressing (SEL) repeatedly.
Each time you press (SEL), the item changes
as follows:
BAS (bass) t TRE (treble) t
BAL (left-right) t FAD (front-rear)
2 Adjust the selected item by pressing
either side of the volume +/– button.
Note
Adjust within 3 seconds after selecting the item.
Quickly attenuating the
sound
Press (ATT).
The “ATT” indicator appears in the display.
To restore the previous volume level, press
(ATT) again.
Canceling the beep sound
Press (6) while pressing (SEL) down.
To activate the beep sound again, press these
buttons again.
Note
If you connect an optional power amplifier and do
not use the built-in amplifier, the beep sound will be
deactivated.
Playing tracks in random
order — Shuffle Play
You can select to play the tracks on the current
disc in random order.
During playback, press (4) (SHUF)
repeatedly until “SHUF” indicator appears
in the display.
Shuffle Play starts.
To return to normal play mode, press (4)
(SHUF) again.
Page 4
Receiving the stored
stations
1 Press (SRC) repeatedly to select the
radio.
2 Press (MODE) repeatedly to select the
band.
3 Press the number button ((1) to (6)) on
which the desired station is stored.
If preset tuning does not work
— Automatic tuning/ Local Seek Mode
Automatic tuning:
Press either side of (SEEK/AMS) to search
for the station.
Scanning stops when the unit receives a
station. Press either side of (SEEK/AMS)
repeatedly until the desired station is
received.
Local Seek Mode:
If the automatic tuning stops too
frequently, press (SENS) repeatedly until
“LCL” indicator appears.
“LCL” indicator is displayed.
Only the stations with relatively strong
signals will be tuned in.
Tip
If you know the frequency of the station you want
to listen to, press either side of (SEEK/AMS) until the
desired frequency appears (manual tuning).
If FM stereo reception is poor
— Monaural Mode
During radio reception, press (SENS)
repeatedly until “MONO” indicator
appears.
“MONO” indicator is displayed.
The sound improves, but becomes monaural
(“ST” disappears).
To return to normal, press (SENS) again.
Troubleshooting
The following checklist will help you remedy
problems you may encounter with your unit.
Before going through the checklist below, check
the connection and operating procedures.
General
No sound.
• Adjust the volume with volume + button.
• Cancel the ATT function.
• Set the fader control to the center position
for a 2-speaker system.
The contents of the memory have been
erased.
• The reset button has been pressed.
t Store again into the memory.
• The power cord or battery has been
disconnected.
• The power connecting cord is not connected
properly.
No beep sound.
• An optional power amplifier is connected
and you are not using the built-in amplifier.
• The beep sound is canceled.
Indications disappear from/do not appear in
the display.
• The clock display disappears if you press
(OFF) for 2 seconds.
tPress (OFF) again for 2 seconds to
display the clock.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the ignition key is in the
ON, ACC, or OFF position.
The leads are not matched correctly with the
car’s accessory power connector.
No power is being supplied to the unit.
• Check the connection. If everything is in
order, check the fuse.
• The car does not have an ACC position.
t Press (SRC) (or insert a disc) to turn on
the unit.
The power is continuously supplied to the
unit.
The car does not have an ACC position.
The power antenna does not extend.
The power antenna does not have a relay box.
CD playback
A disc cannot be loaded.
• Another CD is already loaded.
• The CD is forcibly inserted upside down or
in the wrong way.
Playback does not begin.
• Dirty or defective disc.
• CD-R that is not finalized.
• You tried to playback a CD-R not designed
for audio use.
• Some CD-Rs may not play due to its
recording equipment or the disc condition.
A disc is automatically ejected.
The ambient temperature exceeds 50°C.
CD will not be ejected.
The operation buttons do not function.
Press the reset button.
The sound skips from vibration.
• The unit is installed at an angle of more than
60°.
• The unit is not installed in a sturdy part of
the car.
The sound skips.
Dirty or defective disc.
Radio reception
Preset tuning is not possible.
• Store the correct frequency in the memory.
• The broadcast signal is too weak.
The stations cannot be received.
The sound is hampered by noises.
• Connect a power antenna control lead (blue)
or accessory power supply lead (red) to the
power supply lead of a car’s antenna
booster. (Only when your car has built-in
FM/AM antenna in the rear/side glass.)
• Check the connection of the car antenna.
• The auto antenna will not go up.
t Check the connection of the power
antenna control lead.
• Check the frequency.
Automatic tuning is not possible.
• The local seek mode is set to “ON.”
t Set the local seek mode to “OFF”.
• The broadcast signal is too weak.
t Perform manual tuning.
The “ST” indication flashes.
• Tune in the frequency accurately.
• The broadcast signal is too weak.
t Set to the monaural reception mode.
Selecting the sound
position
— My Best sound Position (MBP)
When you drive without passengers, you can
enjoy the most comfortable sound environment
with “My Best sound Position.”
“My Best sound Position” has two presets,
which adjust the sound level of balance and
fader. You can select one very easily with the
MBP button.
Display
window
MBP-A
MBP-B
MBP-OFF
Press (MBP) repeatedly for the desired
listening position.
The mode of “My Best sound Position” is
shown in the display in order of the table.
If you want to adjust the sound level of
balance and fader more precisely, you can do
it using the (SEL) button (See “Adjusting the
sound characteristics”).
Balance Level Fader Level
Right
– 4dB
Left
Front
0
0
– 4dB
0
0
0
0
0
Rear
– 4dB
– 4dB
0
Boosting the bass sound
— D-bass
You can enjoy a clear and powerful bass sound.
The D-bass function boosts the low frequency
signal and high frequency signal with a sharper
curve than conventional bass boost.
You can hear the bass line more clearly even
while the vocal volume remains the same. You
can emphasize and adjust the bass sound easily
with (D) (D-BASS) button.
D.BASS-3
Level
0dB
Adjusting the bass curve
Note
The bass sound may distort at same volume. If the
bass sound distorts, select less effective bass curve.
D.BASS-2
D.BASS-1
Frequency (Hz)
D.BASS-3
D.BASS-2
D.BASS-1
Press (D) (D-BASS) repeatedly to select
the desired bass curve.
As the D-BASS number increases so does the
effect.
A program broadcast in stereo is heard in
monaural.
The unit is in monaural reception mode.
t Cancel monaural reception mode.
Error displays
Error displays
The following indications will flash for a while.
E-04
A CD is dirty or inserted upside down.
t Clean or insert the CD correctly.
E-99
The CD unit cannot be operated because of
some problem.
t Press the reset button on the unit.
If these solutions do not help improve the
situation, consult your nearest Sony dealer.
Notes
• When the BAL (balance) or FAD (fader) in
"Adjusting the sound characteristics" is adjusted,
the MBP setting returns OFF.
• When MBP is set to OFF, the BAL and FAD setting
is activated.
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