D-SJ15/SJ17CK
SERVICE MANUAL
PORTABLE CD PLAYER
SPECIFICATIONS
US Model
Canadian Model
D-SJ15/SJ17CK
AEP Model
UK Model
E Model
Australian Model
D-SJ15
Photo : D-SJ15
Model Name Using Similar Mechanism
D-EJ715
CD Mechanism Type
CDM-3123EBA
Optical Pick-up Type
DAX-23E
System
Compact disc digital audio system
Laser diode properties
Material: GaAIAs
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 opti-
cal pick-up block with 7 mm aperture. )
D-A conversion
1-bit quartz time-axis control
Frequency respose
40 - 20,000 Hz +1 dB (measured by EIAJ CP-307)
- 4
Output (at 4.5 V input level)
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16
Power requirements
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
· 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 model: 120 V, 60 Hz
AEP, FR, E model:
220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
AUS model: 240 V, 50 Hz
· Sony DCC-E345 car battery cord for use on car
battery : 4.5V 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.
When using
G-PROTECTION function
on
off
NH-WM2AA
23
25
(charged for about
5 hours**)
Tow Sony alkaline
37
40
e batteries LR6 (SG)
*
Measured value by the standard of EIAL
(Electronic Industries Association of Japan).
** Charging time varies depending on how the
rechargeable battery is used.
Operating temperature
5
°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding projecting
parts and controls)
Approx. 143 x 37 x 136 mm
( 5 3/4 x 1 1/2 x 5 3/8 in.)
Mass (excluding accessories)
Approx. 343 g (12.1 oz)
Design and specifications are subject to change
without notice.
· Abbreviation
AUS
: Australian
FR
: French
Ver. 1.2 2005.07
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
9-927-980-13
2005G02-1
© 2005.07
2
Specifications ............................................................................ 1
1. SERVICING NOTES ................................................... 3
2. GENERAL
Locating the Controls ......................................................... 4
3. DISASSEMBLY
3-1.
Cabinet (inner) ASSY, "Lid Sub ASSY, Upper",
Main Board .............................................................. 5
3-2.
MD ASSY ................................................................ 6
3-3.
"Motor ASSY, Tun Table (Spindle) (M902)" .......... 6
3-4.
"Motor ASSY (Sled) (M901)", Optical Pick-up
(DAX-23E) .............................................................. 7
3-5.
Switch Unit .............................................................. 7
4. ELECTRICAL ADJUSTMENS ............................... 8
5. DIAGRAMS
5-1. Explanation of IC Terminals ..................................... 9
5-2. Block Diagram ......................................................... 11
5-3. Printed Wiring Boards (1/2) (Last digit -11) .......... 13
5-4. Printed Wiring Boards (2/2) (Last digit -11) .......... 15
5-5. Printed Wiring Boards (1/2) (Last digit -12) .......... 17
5-6. Printed Wiring Boards (2/2) (Last digit -12) .......... 19
5-7. Schematic Diagram (1/2) (Last digit -11, -12) ....... 21
5-8. Schematic Diagram (2/2) (Last digit -11, -12) ....... 23
5-9. Printed Wiring Boards (1/2) (Last digit -13) .......... 25
5-10. Printed Wiring Boards (2/2) (Last digit -13) .......... 27
5-11. Schematic Diagram (1/2) (Last digit -13) ............... 29
5-12. Schematic Diagram (2/2) (Last digit -13) ............... 31
6. EXPLODED VIEWS
6-1. Upper Lid Section ................................................... 36
6-2. Main Section ........................................................... 37
6-3. Optical pick-up Section (CDM-3123EBA) ............ 38
7. ELECTRICAL PARTS LIST ................................... 39
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 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.
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 dam-
aged by heat.
TABLE OF CONTENTS
This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label is located on
the rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.
Laser component in this product is capable of emitting
radiation exceeding the limit for Class 1.
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.
Ver 1.1 2001.06
3
The laser diode in the optical pick-up block may suffer electrostatic
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 emission, observe from more
than 30cm away from the objective lens.
Before Replacing the Optical pick-up Block
Please be sure to check thoroughly the parameters as per the "Optical
pick-up Block Checking Procedure" (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 eg pin
When checking FOK, remove the lead wire to disc motor.
· RF signal P-to-P value : 0.4 to 0.5Vp-p
SECTION 1
SERVICING NOTES
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser diode
is prohibited unless the upper panel is closed while turning ON the S801
(push switch type).
The following two checking methods for the laser diode are operable.
Method :
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S801 as shown in Fig. 1 .
3. Check the object lens for confirming normal emission of the laser
diode. If not emitting, there is a trouble in the automatic power
control circuit or the optical pick-up. During normal operation, the
laser diode is turned ON about 2.5 seconds for focus searching.
NOTES ON HANDLINGTHE OPTICAL PICK-UP BLOCK OR
BASE UNIT
Fig.1 Method to push S801
S801
4
SECTION 2
GENERAL
This section is extracted from
instruction manual.
LOCATING THE CONTROLS
5
Cabinet (inner) ASSY,
"Lid sub ASSY, Upper",
Main board
MD ASSY
Switch unit
"Motor ASSY,
Turn table (Spindle) (M902)"
"Motor ASSY (Sled) (M901)",
Optical pick-up (DAX-23E)
Set
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (INNER) ASSY, "LID SUB ASSY, UPPER", MAIN BOARD
z
The equipment can be removed using the following procedure.
3
Screw
1
4
Lid sub ASSY, upper
Cabinet (lower) ASSY
2
Screw, step
3
Screw
2
Bracket, switching arm (B)
Arm ASSY, switching
Screw, step
1
Screws (B2)
3
5
Main board
1
Screws (B2)
2
Claws
2
Claw
4
Switch unit flexible board
Cabinet (lower) ASSY
Cabinet (inner) ASSY
Lid sub ASSY, upper