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Operating Instructions
© 1999 by Sony Corporation Printed in Japan
Compact Disc
For installation and connections, see the supplied installation/connections
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
Model No. CDX-3700 Serial No.
Welcome !
Thank you for purchasing the Sony Compact
Disc Player. This unit lets you enjoy a variety of
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
-- 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.
The use of optical instruments with this product
will increase eye hazard.
15 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
Compact disc digital audio
Signal-to-noise ratio
90 dB
Frequency response
10 ­ 20,000 Hz
Wow and flutter
Below measurable limit
Laser Diode Properties
GaAs + GaAlAs
785 - 815 nm (Typ.800 nm)
Emission Duration
Laser output power
Less than 0.5 mW*
* This output is the value measured at a distance of
0.7 mm from the objective lens surface on the
Optical Pick-up Block.
Tuner section
Tuning range
FM tuning interval:
50 kHz/200 kHz switchable
87.5 ­ 108.0 MHz
(at 50 kHz step)
87.5 ­ 107.9 MHz *USA
(at 200 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz
Usable sensitivity
9 dBf
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7 % (stereo),
0.5 % (mono)
35 dB at 1 kHz
Frequency response
30 ­ 15,000 Hz
Tuning range
AM tuning interval:
9 kHz/10 kHz switchable
531 ­ 1,602 kHz
(at 9 kHz step)
530 ­ 1,710 kHz *USA
(at 10 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
30 µV
Power amplifier section
Speaker outputs
(sure seal connectors)
Speaker impedance
4 ­ 8 ohms
Maximum power output 40 W
× 4 (at 4 ohms)
Line output
Power amplifier control
Power antenna relay control
Tone controls
Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
Power requirements
12 V DC car battery
(negative ground)
Approx. 178
× 50× 178mm
(7 1/8
× 2 × 7 1/8 in.)
Mounting dimensions
Approx. 182
× 53 × 162 mm
(7 1/4
× 2 1/8 × 6 1/2 in.)
Approx. 1.2 kg (2 lb. 10 oz.)
Supplied accessories
Parts for installation and
connections (1 set)
Optional accessories
Compact disc single adapter
Design and specifications are subject to change
without notice.
Additional Information
· 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.
· If no sound comes from the speakers of a two-
speaker system, set the fader control to the
center position.
·If your car is equipped with a power antenna,
it will extend automatically while the unit is
·Connecting this unit may cause some car
battery wear when your car has no ACC
(accessory) position on the ignition key switch.
If you have any questions or problems
concerning your unit that are not covered in this
manual, please consult your nearest Sony dealer.
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.
Do not stick paper or tape on the labeled surface.
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.
Before playing, clean the discs with an optional
cleaning cloth. Wipe each disc from the center
Do not use solvents such as benzine, thinner,
commercially available cleaners, or antistatic
spray intended for analog discs.
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
When you play 8 cm (3 in.) CDs
Use the optional Sony compact disc single
adapter (CSA-8) to protect the CD player from
Fuse (10 A)
· 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.
· 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
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.
Reset button
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
· Pressing the reset button will erase the clock
setting and some memorized 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
prevent 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.
Dismounting the unit
1 Press the clip inside the front cover with a
thin screwdriver, and gently pry the front
cover free.
2 Repeat step 1 on the left side.
The front cover is removed.
3 Use a thin screwdriver to push in the clip
on the left side of the unit, then pull out
the left side of the unit until the catch
clears the mounting.
4 Repeat step 3 on the right side.
5 Slide the unit out of the mounting.
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.
Never use a fuse with an amperage rating
exceeding the one supplied with the unit as this
could damage the unit.
Cleaning the connectors
The unit may not function properly if the
connectors between the unit and the front panel
are not clean. In order to prevent this, open the
front panel by pressing (RELEASE), then detach
it and clean the connectors with a cotton swab
dipped in alcohol. Do not apply too much force.
Otherwise, the connectors may be damaged.
Main unit
Back of the front panel
· For safety, turn off the engine before cleaning the
connectors and remove the key from the ignition
· Never touch the connectors directly with your
fingers or any metal device.

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Setting the clock
The clock has a 12-hour digital indication.
Example: To set the clock to 10:08
1 Press (DSPL) during operation.
2 Press (DSPL) for two seconds.
The hour indication flashes.
1 Set the hour.
2 Press (SOUND).
The minute indication flashes.
3 Set the minute.
3 Press (DSPL).
The clock starts.
To go backward
To go forward
To go backward
To go forward
Elapsed playing time
To locate succeeding tracks
To locate preceding tracks
To search backward
To search forward
Locating a specific track
-- Automatic Music Sensor (AMS)
During CD playback, press either side of
(SEEK/AMS) for each track you want to
Locating a specific point in a track
-- Manual Search
During playback, press and hold either
side of (SEEK/AMS) for about two seconds.
Release when you have found the desired
If "
" or "
" appears in the display,
you have reached the beginning or the end of the
disc and you cannot go any further.
Playing a CD in various
Playing tracks repeatedly
-- Repeat Play
Press (1) during playback.
"REPEAT" appears in the display.
When the current track is over, it will play again
from the beginning.
To return to normal playback mode, press again.
Playing tracks in random order
-- Shuffle Play
Press (2) during playback.
"SHUF" appears in the display.
To return to normal playback mode, press again.
Label side up
CD Player
Listening to a CD
Insert a CD.
Playback starts automatically.
If a CD is already inserted, press (SOURCE)
repeatedly until "CD" appears to start playback.
To play back an 8 cm (3 in.) CD, use the optional
Sony compact disc single adapter (CSA-8).
Stop playback
or (OFF)
Eject the CD
Changing the display item
Each time you press (DSPL) during CD
playback, the item changes as follows:
Elapsed playing time
Track number
Clock Z
Memorizing stations
-- 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).
When tuning in stations while driving, use Best
Tuning Memory to prevent accidents.
1 Press (SOURCE) repeatedly to select the
Each time you press (SOURCE), the mode
changes as follows:
2 Press (MODE) repeatedly to select the
Each time you press (MODE), the band
changes as follows:
3 Press (SENS/BTM) for two seconds.
The unit stores stations in the order of their
frequencies on the number buttons.
A beep sounds when the setting is stored.
· 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.
· When a number is indicated in the display, the unit
starts storing stations from the one currently
· If a CD is not in the unit, only the tuner band
appears even if you press (SOURCE).
Memorizing only the
desired stations
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.
1 Press (SOURCE) repeatedly to select the
2 Press (MODE) repeatedly to select the
3 press and hold either side of (SEEK/AMS)
to tune in the station that you want to
store on the number button.
4 Press and hold the desired number button
((1) to (6)) until "MEM" appears.
The number button indication appears in the
If you try to store another station on the same
number button, the previously stored station will be
Receiving the memorized
1 Press (SOURCE) repeatedly to select the
2 Press (MODE) repeatedly to select the
3 Press the number button ((1) to (6)) on
which the desired station is stored.
Other Functions
Adjusting the sound
You can adjust the bass, treble, balance, and
fader. You can store the bass and treble levels.
Each source can store the bass and treble level
1 Select the item you want to adjust by
pressing (SOUND) repeatedly.
BAS (bass) n TRE (treble) n
BALANCE (left-right) n FADER (front-rear)
n VOL (volume)
2 Adjust the selected item by pressing (+)
or (­).
Adjust within three seconds after selecting
the item. (After three seconds, the buttons
function reverts to volume control buttons.)
Enjoy bass and treble even
at low volume
-- Loudness Function
Press (LOUD) until "LOUD" appears.
Bass and treble will be reinforced.
To return to normal mode, press again until
"LOUD" disappears.
Cancel the beep sound
Press (6) while pressing (SOUND).
To obtain the beep sound again, press these
buttons again.
If you connect an optional power amplifier and do
not use the built-in amplifier, the beep sound will be
If you cannot tune in a preset
Press either side of (SEEK/AMS) to search
for the station (automatic tuning).
Scanning stops when the unit receives a
station. Press either side of (SEEK/AMS)
repeatedly until the desired station is
If the automatic tuning stops too frequently, press
(SENS/BTM) repeatedly until "LOCAL" (local seek
mode) is displayed. Only the stations with relatively
strong signals will be tuned in.
If you know the frequency of the station you want
to listen to, press and hold either side of (SEEK/AMS)
until the desired frequency appears (manual tuning).
If FM stereo reception is poor
-- Monaural Mode
Press (SENS/BTM) repeatedly until
"MONO" appears.
The sound improves, but becomes monaural
("STEREO" disappears).
To return to normal mode, press again until
"MONO" disappears.
Changing the display item
Each time you press (DSPL), the item changes
as follows:
Frequency ~ Clock
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.
No sound
The contents of the memory
have been erased.
No beep sound
CD playback
CD cannot be loaded.
Play does not begin.
CD is automatically ejected.
CD will not eject.
The operation buttons do not
The sound skips due to
Radio reception
No signal reception
Preset tuning is not possible.
Automatic tuning is not
The "STEREO" indication
A CD is dirty or inserted upside
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.
Error displays
The following indications will flash for about five seconds.
·Adjust the volume with (+).
·Set the fader control to the center position for two-speaker
·The power cord or battery has been disconnected.
·The reset button has been pressed.
n Store the settings again into the memory.
·An optional power amplifier is connected and you are not using
the built-in amplifier.
·The beep sound is cancelled.
·Another CD is already loaded.
·The CD was forcibly inserted upside down.
Dirty disc.
The ambient temperature exceeds 50°C (122°F).
Press the 6 button for two seconds.
Press the reset button.
·The unit is installed at an angle of more than 60°.
·The unit is not installed in a sturdy part of the car.
·Wrong tuning interval is selected.
n Set the frequency select switch to the 10 K (200 K) position.
·Memorize the correct frequency.
·The broadcast signal is too weak.
The broadcast signal is too weak.
n Use manual tuning.
·Tune in the frequency accurately.
·The broadcast signal is too weak.
n Set to the MONO mode.
Clean or insert the CD correctly.
Press the reset button or 6.
Attenuating the sound
Press (ATT).
"ATT" lights up.
To restore the previous volume level, press
(ATT) again.
Location of controls
Refer to the pages for details.
1 MODE (band select) button
2 SOURCE (source select) button
3 (+) (­) (volume/bass/treble/left-right/
front-rear control) buttons
4 Display window
5 SEEK/AMS (seek/Automatic Music
Sensor/manual search) control
6 6 (eject) button
7 SENS/BTM (sensitivity adjust/Best
Tuning Memory) button
8 ATT (attenuate) button
9 RELEASE (front panel release) button
0 SOUND button
!¡ Reset button (located on the front side
of the unit hidden by the front panel)
!TM During radio reception:
Number buttons
During CD playback:
(1) REPEAT button
(2) SHUF button
!£ DSPL (display mode change/time set)
!¢ OFF button
! Frequency select switch (located on the
bottom of the unit)
The AM (FM) tuning interval is factory-set to
the 10 K (200 K) position. Make sure that the
10 K (200 K) position is selected.
!§ LOUD (loudness) button