Sony d ej 621 service manual

Page 1

D-E666/EJ620/EJ621/EJ622/
EJ623/EJ625/EJ6260K

SERVICE MANUAL

Ver 1.4 2001.11
with SUPPLEMENT-1

US Model

D-EJ621/EJ622/EJ625/EJ62BCK

Canadian Model
UK Model

(9-873-048-81)
E Model
Austral/an Model
D-EJ621/EJ625/EJ6260K
W. \LALKMAA
fi"5°li5'3> AE P Model
D-EJ620/EJ621/EJ623/EJ625/EJ6260K
W Chinese Model
D-EJ621/EJ625
Tour/st Model
D-E666
Photo : D-EJ620
Model Name Using Similar Mechanism D-EJ711
CD Mechanism Type CDM-3123EBA
Optical Pick-up Type BAX-23E
SPECIFICATIONS
System Power requirements Battery lite (approx. hours)

For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
- Two Sony NC-WMAA rechargeable
batteries: 2.4 V DC,
- Sony NH-WM2AA rechargeable batteries:
2.4 V DC,
- Two LR6 (size AA) batteries: 3 V DC
- AC power adaptor (DC IN 4.5 V jack):
US, Canadian, C&SA, MX model:
120 V, 60 Hz
AEP, FR, G, EE, E13, G model:
220 - 230 V, 50/60 Hz
UK, 3AEP'7 model: 230 - 240 V, 50 Hz
AUS model: 240 V, 50 Hz
J'EW, E33 model: 100 - 240 V, 50/60 Hz
HK model: 220 V, 50/60 Hz
AR, CH model: 220 V, 50 Hz
- Sony DCC-E345 car battery cord for use on
car battery : 4.5V DC

Compact disc digital audio system

Laser diode properties
Material: GaAIAs
Wavelength : it: 780 nm
Emission duration: Continuous
Laser output : Less than 44.6 11W
(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
l-bit quartz time-axis control

Frequency response
20 - 20,000 Hz 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 5 mW + Approx. 5 mW at 16 Q
(Approx. 1 mW + Approx. 1 mW at 16 Q)*
*For the customers in France

9-873-048-15 Sony Corporation
2001 K0200-1 Personal Audio Company
©2001.11 Published by Sony Engineering Corporation

(When you use the CD player on a flat and
stable surface.)

Playing time varies depending on how the CD
player is used.

When using G-PROTECTION function
on off

Tow NC-WMAA 10 8

(charged for about 3 hours**)

NH-WM2AA 21 18

(charged for about 5 hours**)

Two Sony alkaline batteries 36 32

LR6 (SG)

* Measured value by the standard of EIAJ
(Electronic Industries Association of Japan).

** Charging time varies depending on how the
rechargeable battery is used.

Operating temperature
5C - 35°C (41°F - 95°F)

- Continued on page 2 -

PORTABLE CD PLAYER
ONY;

Page 2

D-E666/EJ620/EJ621/EJ622/EJ623/EJ625/EJ626CK

Dimensions (w/h/d) (excluding projecting
parts and controls)

Approx. 131.6 X 29.5 X 135.5 mm

(51/4 x 13/16 x 53/8 in.)

Mass (excluding accessories)
Approx. 191 g (6.8 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.

\O. \G. <9 G.
(e \e e <25

m t

6% \ 63

\\\;)J m

\ \

AC power adaptor (1) - O O O
Headphones/earphones - 0*l - O
with remote control (1)
Headphones/ O 0*2 O -
earphones (1)
Rechargeable - - O 0
batteries (2)
Battery carrying case (1) - - O 0
AC plug adaptor (1) - - - 0*3
Hand strap (1) O 0*4 O O*'1

*' Supplied with AR and MX models

*2 Not supplied with AR and MX models

:k] Supplied with E33 and JEW models

*4 Supplied with AEP, G, UK. FR and EE
models

D-EJ626CK

AC power adaptor (1)
Headphones/earphones (1)
Rotary commander (1)
Rotary commander mounting kit (1)*1
Car battery cord ( 1)

Car connecting pack (1)
Velcro tape (2)

Spiral tube (1)

AC plug adaptor (1))2
Hand strap (1)*3

*1 Supplied with Canadian, AEP, UK and G models

*3 Supplied with E33 model
*3 Supplied with AEP, UK and G models

Design and specifications are subject to change without notice.

' Abbreviation
AUS :Australian

FR : French HK : Hong Kong
AR : Argentina JEW : Tourist

G : German EE : East European
CH : Chinese

C&SA : Central and South America
E13 : AC220-23OV area model
E33 : AC100-24OV area model
3AEP7: UK

TABLE OF CONTENTS
Specifications ............................................................................ l
1. SERVICING NOTES ................................................... 3
2. GENERAL
Locating the Controls ......................................................... 4

3. DISASSEMBLY
371. Cabinet (Rear) Sub ASSY,
Cabinet (Front), Main Board
32. MD ASSY ...........................
3-3. Motor ASSY, Tum Table (Spindle) (M901)
3-4. Motor ASSY (Sled) (M902),

Optical Pick-up (BAX-23E) ...................................... 7
375. Lid, Upper, Switch Unit .......................................... 7
4. ELECTRICAL ADJUSTMENTS ............................. 8

5. DIAGRAMS
5-1. Explanation of IC Terminals ....................................... 9
5-2. Block Diagram ......
5731 Printed Wiring Board 7 Main Section (Side A) 7
574. Printed Wiring Boards 7 Main Section (Side B) 7
5-5. Schematic Diagram 7 Main Section (1/2) 7
5-6. Schematic Diagram 7 Main Section (2/2) 7

6. EXPLODED VIEWS
6]. Cabinet Section .......................................

6-2. Optical pick-up Section (CDM-3123EBA)

7. ELECTRICAL PARTS LIST ................................... 22