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file:///C|/Documents%20and%20Settings/bob/My%20Documents/manualdirectory.htm01/04/2007 01:34:00
Ver 1.1 2002.01
9-873-390-02
2002A0200-1
© 2002.1
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
SERVICE MANUAL
PORTABLE CD PLAYER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Tourist Model
Model Name Using Similar Mechanism
D-EJ621
CD Mechanism Type
CDM-3123EBA
Optical Pick-up Type
DAX-23E
SPECIFICATIONS
D-CJ01
Continued on page 2
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 +1dB (measured by JEITA CP-307)
Output (at 4.5 V input level)
Line output (stereo minijack)
Output level 0.7 V rms at 47 k
Recommended load impedance over 10 k
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.
· 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 model:
120 V, 60 Hz
AEP / French / EE / E13 model:
220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
Australian model: 240 V, 50 Hz
Korean model: 100 - 240 V,
50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Chinese model: 220 V, 50 Hz
Tourist model: 100-240V, 50/60Hz
2
2
D-CJ01
Specifications ............................................................................ 1
1. SERVICING NOTES ................................................... 3
2. GENERAL
Locating the Controls ......................................................... 4
3. DISASSEMBLY
3-1. Cabinet (Lower) Sub ASSY,
Cabinet (Inner) Sub ASSY ......................................... 5
3-2. MD Mechanism .......................................................... 5
3-3. Main Board ................................................................. 6
3-4. "Motor ASSY, Turn Table (Spindle) (M901)" ............ 6
3-5. "Motor ASSY (Sled) (M902)",
Optical Pick-up (DAX-23E) ...................................... 6
3-6. Switch Unit ................................................................. 7
4. ELECTRICAL ADJUSTMENTS ............................. 8
5. DIAGRAMS
5-1. Explanation of IC Terminals ....................................... 9
5-2. Block Diagram(1/2) ................................................... 11
5-3. Block Diagram(2/2) .................................................. 12
5-4. Printed Wiring Boards Main Board (Side A) ...... 13
5-5. Printed Wiring Boards Main Board (Side B) ...... 14
5-6. Schematic Diagram Main Section (1/4) ............. 15
5-7. Schematic Diagram Main Section (2/4) ............. 16
5-8. Schematic Diagram Main Section (3/4) ............. 17
5-9. Schematic Diagram Main Section (4/4) ............. 18
6. EXPLODED VIEWS
6-1. Upper Lid Section ..................................................... 22
6-2. Main Section ............................................................. 23
6-3. Optical pick-up Section (CDM-3123EBA) .............. 24
7. ELECTRICAL PARTS LIST ................................... 25
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
CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.
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.
Figures in brackets show the playing time of
MP3 files.
When using
G-PROTECTION function
"1"
"2"
Two NC-WMAA
10.5
10.5
(charged for
[8]
[8]
about 3 hours**)
NH-WM2AA
22.5
23
(charged for
[18]
[18]
about 5 hours**)
Two Sony alkaline
31.5
32
batteries LR6(SG)
[24]
[24]
(produced in Japan)
* Measured value by the standard of JEITA (Japan
Electronics and Information Technology
Industries Association).
** 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. 132.0
× 29.9 × 137.5 mm
(5 1/
4 × 1
3/
16 × 5
1/
2 in.)
Mass (excluding accessories)
Approx. 218 g (7.7 oz.)
Design and specifications are subject to change
without notice.
· Abbreviation
EE
: East European
C&SA
: Central & SouthAmerica
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.
3
D-CJ01
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 0.8Vp-p
USABLE FORMAT
Use ISO9660 Level 1 format
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 checking method 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 HANDLING THE OPTICAL PICK-UP BLOCK OR
BASE UNIT
Fig.1 Method to push S801
S801
z
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the
lead-free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed
with the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
· Unleaded solder melts at a temperature about 40
°C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to
be applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set
to about 350
°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
· Strong viscosity
Unleaded solder is more viscous (sticky, less prone to
flow) than ordinary solder so use caution not to let solder
bridges occur such as on IC pins, etc.
· Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder
may also be added to ordinary solder.
4
D-CJ01
SECTION 2
GENERAL
LOCATING THE CONTROLS
This section is extracted from
instruction manual.
CD player (front)
CD player (inside)
6 i (headphones)
qa DISPLAY button
w; Battery
compartment
1 Display
7 FOLDER button
qg HOLD switch
qk OPEN switch
2 REPEAT / ENTER button
qf DC IN 4.5 V
(external power
input)jack
qh
NX * (play / pause)button
8
x (stop) / CHARGE button
qs
'm / M' (AMS / search)
button
ql G-PROTECTION
switch
5 LINE OUT jack
qd FOLDER + button
9 VOL(volume) button
qj VOL(volume) +*
4 PLAY MODE button
3 Strap holes
0 SOUND button
*The button has a tactile dot.