Sony D-SJ15, D-SJ17CK Service manual
D-SJ15/SJ17CK
SERVICE MANUAL
Ver 1.0 2000.08
Photo : D-SJ15
SPECIFICATIONS
System
Compact disc digital audio system
Laser diode properties
Material: GaAIAs
Wavelength : λ= 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 respose
40 - 20,000 Hz+1 dB (measured by EIAJ CP-307)
Output (at 4.5 V input level)
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 Ω
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
- 4
US Model
Canadian Model
D-SJ15/SJ17CK
AEP Model
UK Model
E Model
Australian Model
D-SJ15
Model Name Using Similar Mechanism D-EJ715
CD Mechanism Type CDM-3123EBA
Optical Pick-up Type DAX-23E
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.
PORTABLE CD PLAYER
• Abbreviation
AUS : Australian
FR : French
TABLE OF CONTENTS
Specifications ............................................................................ 1
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.
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) ..................................... 13
5-4. Printed Wiring Boards (2/2) ..................................... 15
5-5. Schematic Diagram (1/2).......................................... 17
5-6. Schematic Diagram (2/2).......................................... 19
6. EXPLODED VIEWS
6-1. Upper Lid Section..................................................... 24
6-2. Main Section............................................................. 25
6-3. Optical pick-up Section (CDM-3123EBA) .............. 26
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.
This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label is located on
the rear exterior.
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.
SAFETY-RELATED COMPONENT WARNING!!
7. ELECTRICAL PARTS LIST................................... 27
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR 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.
– 2 –
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR
BASE UNIT
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
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.
S801
Fig.1 Method to push S801
– 3 –
LOCA TING THE CONTROLS
SECTION 2
GENERAL
This section is extracted from
instruction manual.
– 4 –
SECTION 3
)
r
DISASSEMBLY
z
The equipment can be removed using the following procedure.
Set
Cabinet (inner) ASSY,
“Lid sub ASSY, Upper”,
MD ASSY
Main board
Switch unit
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (INNER) ASSY, “LID SUB ASSY, UPPER”, MAIN BOARD
4
“Motor ASSY,
Turn table (Spindle) (M902)”
Lid sub ASSY, upper
3
Screw
“Motor ASSY (Sled) (M901)”,
Optical pick-up (DAX-23E)
Bracket, switching arm (B
Arm ASSY, switching
Screw, step
2
2
Claws
1
1
Screws (B2)
Main board
Cabinet (lower) ASSY
3
2
Screw, step
Cabinet (inner) ASSY
1
Screws (B2)
2
Claw
3
Screw
Lid sub ASSY, uppe
5
– 5 –
4
Switch unit flexible board
Cabinet (lower) ASSY
)
3-2. MD ASSY
Y
2
CN503 (White)
CN502 (Green)
1
3
Optical pick-up flexible board
Main board
4
MD ASS
3-3. “MOTOR ASSY, TURN TABLE (SPINDLE) (M902)”
2
1 Screws (B1.7x5)
Motor ASSY, Turn table (Spindle) (M902
Chassis
– 6 –
3-4. “MOTOR ASSY (SLED) (M901)”, OPTICAL PICK-UP (DAX-23E)
)
d
1 Screw (B 1.7x5)
Cover, Gear
Gear B
Screw (feed) ASSY
3-5. SWITCH UNIT
5
Chassis
2
3
Motor ASSY (Sled) (M901)
4 Screw (P 1.4x3.5)
Bracket (Shaft)
Optical pick-up (DAX-23E
6
Lid sub ASSY, upper
3
2
1
Switch unit
Cover, Li
Screws (1.7)
– 7 –
SECTION 4
TP641
0
2
0
P
20
ELECTRICAL ADJUSTMENTS
The CD section adjustments are done automatically in this set.
Precautions for Check
1. Perform check in the order given.
2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise
indicated.
3. Power supply voltage requirement : DC4.5 V in DC IN jack.
(J401)
VOLUME button : Minimum
AVLS switch : NORM
HOLD switch : OFF
Focus bias Check
Condition:
• Hold the set in horizontal state.
Connection:
oscilloscope
(AC range)
2 K
Ω
TP629 (RF)
TP635 (AGND)
[ MAIN BOARD] (Side B)
C810
06
805
C629
91
621
95
104
00
04
05
10
15
20
C807
FB603
IS602
IS601
90
C808
R813
FB602
TP639
TP809
R804
C628
TP636
TP637
R809
R807
IC601
C606
R609
C607
0
C605
R608
R605
R606
8
C604
R607
C603
R603
616570758085
31
9
TP635
(AGND)
C602
R604
C614
60
55
50
45
40
TP622
35
TP618
6
IS604
C615
R632
C623
TP621
TP617
R616
C612
C625
C624
TP619
R619
C613
R614
R643
630
R617
C627
R637
3
R613
R615
C611
TP608
R638
TP632
R611
R612
C626
R462
C621
TP403
TP631
TAP601
TP630
TP629 (RF)
Q500
TP505
TAP602
TP504
T
TP633
TP50
TP5
Procedure:
1. Connect the oscilloscope to the test points TP629 (RF) and TP635
(GND) on the MAIN board.
2. Set a disc. (YEDS-18)
3. Press the u button.
4. Check the oscilloscope waveform is as shown below.
A good eye pattern means that the diamond shape (◊) in the center of the waveform can be clearly distinguished.
RF Signal reference Waveform (Eye Pattern)
VOLT/DIV : 100 mV (With the 10 : 1 probe in use)
TIME/DIV : 500ns
RF level
0.4 to 0.5 Vp-p
To watch the eye pattern, set the oscilloscope to AC range and
increase the vertical sensitivity of the oscilloscope for easy
watch-ing.
5. Stop revolving of the disc motor by pressing the x button.
– 8 –
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