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Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM-3021EBA
Optical Pick-up Name
DAX-21E
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
D-EJ01
Tourist Model
D-E01
D-E01/EJ01
PORTABLE CD PLAYER
Photo: D-E01
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength:
= 780 nm
Emission duration: Continuous
Laser output: 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 with 7 mm aperture.)
D-A conversion
1-bit quartz time-axis control
Frequency response
20 - 20,000 Hz +1/­2 dB
(measured by EIAJ CP-307)
Output (at 4.5 V input level)
Line output (stereo minijack)
Output level 0.7 V rms at 47 kilohms
Recommended load impedance over 10
kilohms
Headphones (stereo minijack)
Approx. 15 mW + Approx. 15 mW
at 16 ohms
(Approx. 3 mW + Approx. 3 mW
at 16 ohms) *
* For the customers in France
Optical digital output
(optical output connector)
Output level: ­21 - ­15 dBm
Wavelength: 630 - 690 nm at peak level
SPECIFICATIONS
­ Continued on next page ­
Power requirements
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
· Two Sony NH-14WM rechargeable batteries:
2.4 V DC
· Two LR6 (size AA) batteries: 3 V DC
· AC power adaptor (DC IN 4.5 V jack):
US, CND model: 120 V, 60 Hz
AEP, FR, G, E13 model:
220 - 230 V, 50/60 Hz
UK model: 230 - 240V, 50 Hz
AUS model: 240 V, 50 Hz
E01/E33 model: 100 - 240 V, 50/60 Hz
EJ01: HK model: 220 V, 50/60 Hz
CH model: 220 V, 50 Hz
· Sony DCC-E245 car battery cord for use on
car battery: 4.5 V DC
Battery life * (approx. hours)
(When you use the CD player on a flat and stable
surface.)
Playing time varies depending on how the CD
player is used.
Two NH-14WM
25
(charged for about 4 hours **)
Battery case
40
(two alkaline batteries)
Rechargeable batteries
62
NH-14WM and battery case
(two alkaline batteries)
*
Measured value by the standard of EIAJ
(Electronic Industries Association of Japan).
**
Charging time varies depending on how the
rechargeable battery is used.
Ver 1.4 2001.07
9-927-142-13
2001G0400-1
©2001.7
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group


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CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
Flexible Circuit Board Repairing
· Keep the temperature of the soldering iron around 270°C during
repairing.
· Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
· Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on Chip Component Replacement
· Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be
damaged by heat.
TABLE OF CONTENTS
1. SERVICE NOTE ................................................................ 3
2. GENERAL
Getting started ......................................................................... 4
Playing a CD ........................................................................... 5
3. DISASSEMBLY
3-1. Upper Panel Assy ................................................................ 6
3-2. Tray (P) Assy, Escutcheon, Cabinet .................................... 6
3-3. OP Assy ............................................................................... 7
3-4. SW Unit Assy, Main Board ................................................. 7
4. ELECTRICAL ADJUSTMENT
4-1. Focus Bias Check ................................................................ 8
5. DIAGRAMS
5-1. IC Pin Description ............................................................... 9
5-2. Block Diagram ­CD Section­ ........................................... 11
5-3. Block Diagram ­Audio Section­ ...................................... 13
5-4. Block Diagram ­Power Supply Section­ .......................... 15
5-5. Printed Wiring Board ........................................................ 17
5-6. Schematic Diagram ­Main Section (1/3)­ ........................ 21
5-7. Schematic Diagram ­Main Section (2/3)­ ........................ 23
5-8. Schematic Diagram ­Main Section (3/3)­ ........................ 25
6. EXPLODED VIEWS
6-1. Upper Panel Section .......................................................... 31
6-2. Lower Panel Section .......................................................... 32
6-3. CD Mechanism Deck Section ........................................... 33
7. ELECTRICAL PARTS LIST ......................................... 34
Operating temperature
5°C - 35°C (41°F - 95°C)
Dimensions (w/h/d) (excluding projecting parts
and controls)
Approx. 138.5
× 21.5 × 136.2 mm
(5 1/2
× 7/8 × 5 3/8 in.)
Mass (excluding rechargeable batteries)
Approx. 220 g (7.8 oz.)
Supplied accessories
For the area code of the location in which you
purchased the CD player, check the upper left side
of the bar code on the package.
AC power adaptor AC-E455 (1)
Headphones/earphones with remote control
RM-CD01ELT + MDR-E838SP (1) (Except US model)
RM-CD01ELT + MDR-W034SP (1) (US model only)
Rechargeable batteries NH-14WM (2)
Battery carrying case (2)
Carrying case (1)
Battery case (1)
8-cm CD adaptor (1) *
AC plug adaptor (1) **
* Supplied with E01/E13, HK, CH models
** Supplied with E01/E33 model only
For US customers
The AC power adaptor supplied is not intended to be serviced.
Should the AC power adaptor cease to function in its
intended manner, during the warranty period, the adaptor
should be returned to your nearest Sony Service Center or
Sony Authorized Repair Center for replacement, or after
warranty period, it should be discarded.
Design and specifications are subject to change without
notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED LINE
WITH MARK
! ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
! SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
This Compact Disc player is
classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT table is located
on the bottom exterior.
· Abbreviation
CND : Canadian model
FR
: French model
G
: German model
E13 : AC 220-230V area in E model
AUS : Australian model
E33 : AC 100-240V area in E model
HK
: Hong Kong model
CH
: Chinese model


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chuck plate jig
disc
SECTION 1
SERVICE NOTE
· NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
· NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
· To Check the Laser Diode and Focus Search Operation
Open the upper panel. Turn on the power without a disc while
the main board S801 (OPEN) is ON (or TAP802 is shorted). Then,
observe the objective lens and check that the following opera-
tions are performed.
1. Scatterd light of laser beams is seen.
2. Check for vertical movements (five) of the objective lens (with
movement of the PU on the inner circumference).
· CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the upper panel
section, use Chuck Plate Jig.
· Part No. of Chuck Plate Jig: 4-221-965-01
S801
(OPEN)
S801
TAP802
­ main board (side A) ­
· Before Replacing the Optical Pick-Up Block
Please be sure to check throughly the parameters as par the "Opti-
cal Pick-Up Block Checking Procedures" (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
· FOK output : IC601 # pin
When checking FOK, remove the lead wire to disc motor.
When checking FOK value, remove the lead wire to
disc motor.
· RF signal P-to-P value : 0.35 - 0.65 Vp-p
· The repairing grating holder is impossible.


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SECTION 2
GENERAL
This section is extracted
from instruction manual.


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