Sony Portable CD Player CDX 2250 User Manual

3-865-652-11 (1)  
FM/AM  
Compact Disc  
Player  
US  
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-2250 Serial No.  
For installation and connections, see the supplied installation/connections  
manual.  
CDX-2250  
1999 by Sony Corporation  
 
Table of Contents  
Location of controls ................................................. 4  
Additional Information  
Precautions ........................................................... 9  
Maintenance....................................................... 10  
Dismounting the unit ....................................... 11  
Specifications ..................................................... 12  
Troubleshooting guide ..................................... 13  
Getting Started  
Resetting the unit ................................................ 5  
Setting the clock .................................................. 5  
CD Player  
Listening to a CD ................................................ 6  
Playing a CD in various modes ........................ 6  
Radio  
Memorizing stations automatically  
— Best Tuning Memory (BTM) ................... 7  
Memorizing only the desired stations ............. 7  
Receiving the memorized stations.................... 7  
Other Functions  
Adjusting the sound characteristics ................. 8  
Turning on the clock display  
— Power Select Function .............................. 8  
Changing the sound and beep sound .............. 9  
3
 
Location of controls  
MODE  
BTM  
SOUND  
SEEK/AMS  
SENS  
DSPL  
1
OFF  
2
3
D - BASS  
SOURCE  
REPEAT  
SHUF  
1
2
3
4
5
6
OFF  
CDX-2250  
Refer to the pages for details.  
1 SEEK/AMS (seek/Automatic Music  
0 Reset button 5  
Sensor/manual search) control 6, 8  
OFF button 6, 8  
2 MODE (band select) button 7  
!™ During radio reception:  
3 SOURCE (source select) button 6, 7  
Number buttons 7  
4 Dial (volume/bass/treble/left-right/  
During CD playback:  
(1) REPEAT button 6  
(2) SHUF button 6  
front-rear control) 5, 8  
5 SOUND button 5, 8, 9  
6 Display window  
D-BASS control 9  
7 SENS/BTM (sensitivity adjust/Best  
Tuning Memory) button 7, 8  
8 6 (eject) button 6  
9 DSPL (display mode change/time set)  
button 5, 6, 8  
4
 
Setting the clock  
The clock has a 12-hour digital indication.  
Getting Started  
Example: To set the clock to 10:08  
1 Press (DSPL) during operation.  
If the POWER SELECT function is set to  
“ON,” go to step 2. If it is set to “OFF,” set  
to “ON” (page 8).  
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.  
2 Press (DSPL) for two seconds.  
The hour indication flashes.  
1 Set the hour.  
Reset button  
To go backward  
SOURCE  
Notes  
To go forward  
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.  
2 Press (SOUND).  
The minute indication flashes.  
3 Set the minute.  
To go backward  
SOURCE  
To go forward  
3 Press (DSPL).  
The clock starts.  
Note  
If the car has no accessory position on the ignition  
key switch, the clock cannot be set unless the  
power is turned on. Set the clock after you have  
turned on the radio, or started CD playback.  
5
 
Locating a specific track  
— Automatic Music Sensor (AMS)  
CD Player  
During playback, push the SEEK/AMS  
control up or down and release for each  
track you want to skip.  
SEEK/AMS  
To locate succeeding  
tracks  
Listening to a CD  
To locate preceding  
tracks  
Insert a CD.  
Playback starts automatically.  
Locating a specific point in a track  
— Manual Search  
Label side up  
During playback, push the SEEK/AMS  
control up or down and hold for about  
two seconds. Release when you have  
found the desired point.  
SEEK/AMS  
To search forward  
To search backward  
If a CD is already inserted, press (SOURCE)  
repeatedly until “CD” appears to start  
playback.  
If “  
” or “  
” appears in the  
display, you have reached the beginning or the  
end of the disc and you cannot go any further.  
Elapsed playing time  
To play back an 8 cm (3 in.) CD, use the optional  
Sony compact disc single adapter (CSA-8).  
Playing a CD in various  
modes  
To  
Press  
Playing tracks repeatedly  
— Repeat Play  
Stop playback  
Eject the CD  
6 or (OFF)  
6
Press (1) during playback.  
“REP” appears in the display.  
Changing the display item  
Each time you press (DSPL) during CD  
When the current track is over, it will play  
again from the beginning.  
playback, the item changes as follows:  
z Elapsed playing time  
z Track number  
Clock Z  
To return to normal playback mode, press  
again.  
MOTION DISPLAY* Z  
* All the above items are scrolled in the display  
one by one in order.  
Playing tracks in random order  
— Shuffle Play  
Press (2) during playback.  
“SHUF” appears in the display.  
To return to normal playback mode, press  
again.  
6
 
Memorizing only the  
desired stations  
Radio  
You can store up to 6 stations on each band (a  
total of 18 for FM I, FM II, and FM III, and 6 for  
AM) in the order of your choice.  
Memorizing stations  
automatically  
1 Press (SOURCE) repeatedly to select the  
tuner.  
— Best Tuning Memory (BTM)  
This unit selects the stations with the strongest  
signals and memorizes them in the order of  
their frequencies. You can store up to 6 stations  
on each band (FM I, FM II, FM III, and AM).  
2 Press (MODE) repeatedly to select the  
band.  
3 Push the SEEK/AMS control up or down  
to tune in the station that you want to  
store on the number button.  
Caution  
When tuning in stations while driving, use  
Best Tuning Memory to prevent accidents.  
4 Press and hold the desired number  
button ((1) to (6)) until “MEM” appears.  
The number button indication appears in  
the display.  
1 Press (SOURCE) repeatedly to select the  
tuner.  
Each time you press (SOURCE), the mode  
changes as follows:  
CD ˜ TUNER  
Note  
If you try to store another station on the same  
number button, the previously stored station will  
be erased.  
2 Press (MODE) repeatedly to select the  
band.  
Each time you press (MODE), the band  
changes as follows:  
Receiving the memorized  
stations  
FM I FM II FM III AM  
3 Press (SENS/BTM) for two seconds.  
The unit stores stations in the order of their  
frequencies on the number buttons.  
1 Press (SOURCE) repeatedly to select the  
tuner.  
A beep sounds when the setting is stored.  
2 Press (MODE) repeatedly to select the  
band.  
Notes  
The unit does not store stations with weak  
signals. If only a few stations can be received,  
some number buttons will retain their former  
setting.  
3 Press the number button ((1) to (6)) on  
which the desired station is stored.  
When a number is indicated in the display, the  
unit starts storing stations from the one currently  
displayed.  
continue to next page n  
If a CD is not in the unit, only the tuner band  
appears even if you press (SOURCE).  
7
 
If you cannot tune in a preset  
station  
Other Functions  
Push and release the SEEK/AMS control  
up or down to search for the station  
(automatic tuning).  
Scanning stops when the unit receives a  
station. Push the SEEK/AMS control up or  
down repeatedly until the desired station is  
received.  
Adjusting the sound  
characteristics  
You can adjust the bass, treble, balance, and  
fader. You can store the bass and treble levels.  
Note  
If the automatic tuning stops too frequently, press  
(SENS/BTM) repeatedly until “LCL” (local seek  
mode) is displayed. Only the stations with  
relatively strong signals will be tuned in.  
1 Select the item you want to adjust by  
pressing (SOUND) repeatedly.  
Tip  
If you know the frequency of the station you want  
to listen to, push the SEEK/AMS control up or  
down and hold until the desired frequency  
appears (manual tuning).  
BAS (bass) n TRE (treble) n BAL (left-  
right) n FAD (front-rear) n VOL (volume)  
2 Adjust the selected item by rotating the  
dial.  
If FM stereo reception is poor  
— Monaural Mode  
Adjust within three seconds after selecting  
the item. (After three seconds, the dial  
function reverts to volume control.)  
Press (SENS/BTM) repeatedly until  
“MONO” appears.  
The sound improves, but becomes  
monaural (“ST” disappears).  
Turning on the clock  
display — Power Select Function  
Only for cars with an accessory position on the  
ignition key switch  
To return to normal mode, press again until  
“MONO” disappears.  
Changing the display item  
Each time you press (DSPL), the item changes  
as follows:  
To turn the Power Select Function ON  
zFrequency  
zClock  
Press (OFF) while pressing (SOUND).  
The Power Select Function ties the clock  
display power to the accessory position on  
the ignition key switch.  
MOTION DISPLAY* Z  
* All the above items are scrolled in the display  
one by one in order.  
To avoid battery wear, the clock is not  
displayed while the unit is initializing.  
8
 
Additional  
Information  
Changing the sound and  
beep sound  
Boosting the bass sound — D-bass  
You can enjoy a clear and powerful bass  
sound.  
Precautions  
• If your car was parked in direct sunlight  
resulting in a considerable rise in  
temperature inside the car, allow the unit to  
cool off before operating it.  
• If no power is being supplied to the unit,  
check the connections first. If everything is in  
order, check the fuse.  
The D-bass function boosts the low frequency  
signal with a sharper curve than conventional  
bass boost.  
You can hear the bass line more clearly even  
while the vocal remains at the same volume.  
You can emphasize and adjust the bass sound  
easily with the D-BASS control. This is similar  
in effect to an optional subwoofer system.  
• If no sound comes from the speakers of a  
two-speaker system, set the fader control to  
the center position.  
D-BASS 3  
D-BASS 2  
D-BASS 1  
If your car is equipped with a power  
antenna, it will extend automatically while  
the unit is operating.  
0dB  
Frequency (Hz)  
If you have any questions or problems  
concerning your unit that are not covered in  
this manual, please consult your nearest Sony  
dealer.  
Adjusting the bass curve  
Turn the D-BASS control to adjust the  
bass level (1, 2, or 3).  
“D-BASS” appears in the display.  
Notes on handling CDs  
A dirty or defective disc may cause sound  
dropouts while playing. To enjoy optimum  
sound, handle the disc by its edge. To keep the  
disc clean, do not touch the surface.  
To cancel, turn the control to OFF.  
Note  
If the bass sound becomes distorted, adjust the  
D-BASS control or volume.  
Cancel the beep sound  
Press (6) while pressing (SOUND).  
Do not stick paper or tape on the labeled  
surface.  
To obtain 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.  
continue to next page n  
9
 
Do not expose the discs to direct sunlight or  
heat sources such as hot air-ducts, or leave  
them in a car parked in direct sunlight where  
there can be a considerable rise in temperature  
inside the car.  
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.  
Before playing, clean the discs with an optional  
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.  
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.  
Notes on moisture condensation  
On a rainy day or in a very damp area,  
moisture may condense on the lenses inside  
the CD player. Should this occur, the unit will  
not operate properly. In this case, remove the  
disc and wait for about an hour until the  
moisture evaporates.  
When you play 8 cm (3 in.) CDs  
Use the optional Sony compact disc single  
adapter (CSA-8) to protect the CD player from  
damage.  
10  
 
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.  
Dismounting 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.  
10 mm (13/32 in.)  
4 mm (3/16 in.)  
90°  
11  
 
Specifications  
AUDIO POWER SPECIFICATIONS  
POWER OUTPUT AND TOTAL HARMONIC DISTORTION  
14 watts per channel minimum continuous average power into  
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more  
than 1 % total harmonic distortion.  
Other specifications  
CD player section  
General  
Outputs  
System  
Compact disc digital audio  
system  
Power antenna relay  
control  
Telephone ATT control  
lead  
Signal-to-noise ratio  
Frequency response  
Wow and flutter  
Laser Diode Properties  
Material  
90 dB  
10 – 20,000 Hz  
Below measurable limit  
Tone controls  
Bass ±8 dB at 100 Hz  
Treble ±8 dB at 10 kHz  
12 V DC car battery  
(negative ground)  
Approx.178×50×185mm  
(7 1/8 × 2 × 7 3/8 in.)  
(w/h/d)  
Approx. 182 × 53 × 162 mm  
(7 1/4 × 2 1/8 × 6 1/2 in.)  
(w/h/d)  
Approx. 1.2 kg (2 lb. 10 oz.)  
Parts for installation and  
connections (1 set)  
Cleaning cloth XP-CD1  
Compact disc single  
adapter CSA-8  
GaAlAs  
780 nm  
Power requirements  
Dimensions  
Wavelength  
Emission Duration  
Laser output power  
Continuous  
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.  
Mounting dimensions  
Mass  
Supplied accessories  
Tuner section  
FM  
Optional accessories  
Tuning range  
87.5 – 107.9 MHz  
Antenna terminal  
Intermediate frequency 10.7 MHz  
Usable sensitivity  
Selectivity  
Signal-to-noise ratio  
External antenna connector  
9 dBf  
75 dB at 400 kHz  
65 dB (stereo),  
68 dB (mono)  
Design and specifications are subject to change  
without notice.  
Harmonic distortion at 1 kHz  
1.0 % (stereo),  
0.7 % (mono)  
35 dB at 1 kHz  
30 – 15,000 Hz  
Separation  
Frequency response  
AM  
Tuning range  
Antenna terminal  
530 – 1,710 kHz  
External antenna connector  
Intermediate frequency 10.71 MHz/450 kHz  
Sensitivity 30 µV  
Power amplifier section  
Outputs  
Speaker outputs  
(sure seal connectors)  
4 – 8 ohms  
Speaker impedance  
Maximum power output 35 W × 4 (at 4 ohms)  
12  
 
Troubleshooting guide  
The following checklist will help you remedy the problems you may encounter with your unit.  
Before going through the checklist below, check the connection and operating procedures.  
General  
Cause/Solution  
Problem  
Rotate the dial in a clockwise direction to adjust the volume.  
Set the fader control to the center position for two-speaker  
systems.  
No sound.  
• The power cord or battery has been disconnected.  
• The reset button has been pressed.  
n Store the settings again into the memory.  
The contents of the memory  
have been erased.  
An optional power amplifier is connected and you are not  
using the built-in amplifier.  
The beep sound is cancelled (page 9).  
No beep sound.  
CD playback  
Problem  
Cause/Solution  
CD cannot be loaded.  
Another CD is already loaded.  
The CD was forcibly inserted upside down.  
Play does not begin.  
CD is automatically ejected.  
CD will not eject.  
Dirty disc.  
The ambient temperature exceeds 50°C (122°F).  
Press the 6 button for two seconds.  
Press the reset button.  
The operation buttons do not  
function.  
The sound skips due to  
vibration.  
• The unit is installed at an angle of more than 60°.  
• The unit is not installed in a sturdy part of the car.  
Radio reception  
Problem  
Cause/Solution  
Preset tuning is not possible.  
• Memorise the correct frequency.  
• The broadcast signal is too weak.  
Automatic tuning is not  
possible.  
The broadcast signal is too weak.  
n Use manual tuning.  
The “ST” indication flashes.  
Tune in the frequency accurately.  
The broadcast signal is too weak.  
n Set to the MONO mode (page 8).  
continue to next page n  
13  
 
Error displays  
The following indications will flash for about five seconds.  
Solution  
Display  
Cause  
Clean or insert the CD correctly.  
A CD is dirty or inserted upside  
down.  
Press the reset button or 6.  
The CD player cannot be operated  
because of some problem.  
If the above-mentioned solutions do not help improve the situation, consult your nearest Sony  
dealer.  
14  
 
 
Sony Corporation Printed in Korea  
 

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