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Portable
CD Player
Operating Instructions
About the area code
The area code of the location in which you purchased the CD player
is shown on upper left of the bar code label on the package.
For accessories supplied with your CD player, check the area code
of your model and see "Accessories (supplied/optional)."
3-225-011-73 (1)
D-EJ721
D-EJ725
© 2000 Sony Corporation


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CAUTION
The use of optical instruments with this
product will increase eye hazard.
Owner's Record
The model number is located at the rear and
the serial number is located inside the lid of
the CD player. Record these numbers in the
spaces provided below. Refer to them
whenever you call upon your Sony dealer
regarding this product.
Model No. ___________________
Serial No. ___________________
Certain countries may regulate disposal of
the battery used to power this product. Please
consult with your local authority.
For the customers in the USA and Canada
This mark is available in the USA and Canada
only
RECYCLING NICKEL-CADMIUM BATTERIES
Nickel-Cadmium batteries are recyclable. You can help
preserve our environment by returning your unwanted
batteries to your nearest point for
collection, recycling or proper disposal.
Note: In some areas the disposal of
nickel-cadmium batteries in household
or business trash may be prohibited.
RBRC (Rechargeable Battery Recycling
Corporation) advises you about spent
battery collection by the following phone number.
Call toll free number: 1-800-822-8837 (United
States and Canada only)
Caution: Do not handle damaged or leaking nickel-
cadmium batteries.
For the customers in the USA and Canada
DISPOSAL OF NICKEL METAL HYDRIDE
BATTERY.
NICKEL METAL HYDRIDE BATTERY.
DISPOSE OF PROPERLY.
You can return your unwanted nickel metal hydride
batteries to your nearest Sony Service Center or Factory
Service Center.
Note: In some areas the disposal of nickel metal
hydride batteries in household or business trash may
be prohibited.
For the Sony Service Center nearest you call 1-800-
222-SONY (United States only)
For the Sony Factory Service Center nearest you call
416-499-SONY (Canada only)
Caution: Do not handle damaged or leaking nickel
metal hydride battery.
For the customers in the USA
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.


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Table of Contents
Getting started
Locating the controls ................................... 4
Playing a CD
1. Connect your CD player. ......................... 6
2. Insert a CD. ............................................. 6
3. Play a CD. ............................................... 6
Playback options
Playing tracks repeatedly (Repeat play) ...... 9
Playing a single track (Single play) ............. 9
Playing tracks in random order
(Shuffle play) ........................................... 9
Playing tracks in your favorite order
(PGM play) ............................................ 10
Available features
G-PROTECTION function ........................ 11
Emphasizing the bass sound (SOUND) .... 11
Protecting your hearing (AVLS) ................ 12
Locking the controls (HOLD) ................... 12
Turning off the operation beep sound ........ 13
Connecting your CD player
Connecting a stereo system ....................... 14
Using your CD player in a car ................... 15
Connecting a power source
Using the rechargeable batteries ................ 16
Using the dry batteries ............................... 18
Using the external battery case .................. 18
Notes on the power source ........................ 19
Additional information
Precautions ................................................ 20
Maintenance .............................................. 20
Troubleshooting ......................................... 21
Specifications ............................................ 23
Accessories (supplied/optional) ................ 25


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Getting started
Locating the controls
For details, see pages in parentheses.
CD player (front)
CD player (inside)
qd i (headphones) jack
(page 6)
qg AVLS switch
(page 12)
qh Battery compartment
(page 16)
1 Display
(pages 7, 9 - 12)
7 VOLUME +/­
buttons
(page 6)
5 HOLD switch
(page 12)
3 PLAY MODE
button
(pages 8 - 10)
6 OPEN switch
(page 6)
2 REPEAT/ENTER button
(pages 8 - 10)
4 SOUND button
(page 11)
9 u (play/pause)
button
(pages 6, 7, 10)
q; x (stop)/CHG
(charge) button
(pages 7, 13, 16)
CD player (rear)
8 ./>
(AMS/search)
buttons
(pages 7, 9, 10)
qf G-PROTECTION
switch
(page 11)
qs LINE OUT
(OPTICAL) jack
(page 14)
qa EXT BATT
(external battery)/
DC IN 4.5 V (external
power input) jack
(pages 6, 16, 19)


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Remote control (for the models supplied with the RM-CD6 remote control)
qj x (stop) button
(pages 7, 13)
qk VOL (volume)
+/­ button
(page 6)
w; HOLD switch
(page 12)
ql N(play)·>
(AMS/search)
button
(pages 6, 7, 9, 10)
wa .(AMS/
search) button
(pages 7, 9, 10)
Note
Use only the supplied remote control. You cannot operate this CD player with the remote control supplied with
other CD players.
Using the carrying case
During active uses, use the supplied carrying case. (See "G-PROTECTION function.")
Insert the CD player in the case first, then connect the headphones.
Attach the case to your hand as illustrated below.
,
Getting
started