Sony DEJ-2000 Service manual
D-EJ2000
SERVICE MANUAL
Ver 1.1 2002. 12
Photo : SILVER TYPE
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM-3325ES2
Optical Pick-up Name DAX-25E
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
E Model
Chinese Model
Tourist Model
•Abbreviation
E18 : 100 – 230 V AC area in E model
HK : Hong Kong model
JE : Tourist model
KR : Korean model
EE : East European model
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wav elength: 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 response
20 - 20 000 Hz
307)
Output (at 3 V input level)
Line output (stereo minijack)
Output level 0.7 V rms at 47 kΩ
Recommended load impedance over 10 kΩ
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 Ω
(Approx. 0.5 mW + Approx. 0.5 mW
at 16
*For the customers in Europe
Optical digital output (optical output connector)
Output level: –21 - –15 dBm
Wav elength: 630 - 690 nm at peak level
+1
dB (measured by JEITA CP-
–2
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-14WM (A) rechargeable battery:
1.2 V DC
• LR6 (size AA) battery: 1.5 V DC
•AC power adaptor (DC IN 3 V jack):
US, Canadian models: 120 V, 60 Hz
UK model: 230 V, 50 Hz
Australian model: 240 V, 50 Hz
AEP, JE, E18, KR and EE models:
100 - 240 V, 50/60 Hz
HK model: 230 V, 50 Hz
Chinese model: 220 V, 50 Hz
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
NH-14WM (A) 25 22
(charged for
about 5 hours**)
External battery case 39 34
(alkaline battery***)
NH-14WM (A) and 63 55
external battery case
(alkaline battery***)
* 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.
*** When using a Sony alkaline battery LR6 (SG)
(produced in Japan)
Operating temperature
5°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding
projecting parts and controls)
Approx. 127.0 × 133.8 × 13.4 mm
3
⁄8×17⁄32 in.)
(5 × 5
Mass (excluding accessories)
Approx. 118 g (4.2 oz)
Design and specifications are subject to change
without notice.
“1” “2”
9-874-158-02
2002L1600-1
© 2002.12
PORTABLE CD PLAYER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
D-EJ2000
Ver 1.1 2002.12
TABLE OF CONTENTS
1. SERVICING NOTE ·························································· 3
2. GENERAL ·········································································· 6
3. DISASSEMBLY ································································ 7
3-1. Upper Lid Section ························································· 7
3-2. Cabinet (Middle) Section ·············································· 8
3-3. MAIN Board,
Optical Pick-Up Section (CDM-3325ES2) ··················· 8
3-4. Motor Assy Turn Table (M902),
Optical Pick-Up Assy (DAX-25E) ································ 9
4. ELECTRICAL ADJUSTMENT ·································· 10
5. DIAGRAMS ······································································ 11
5-1. Block Diagram – Main (1/2) Section – ······················· 12
5-2. Block Diagram – Main (2/2) Section – ······················· 13
5-3. Block Diagram – Power Supply Section – ·················· 14
5-4. Printed Wiring Board – MAIN Board (Side A) – ········ 15
5-5. Printed Wiring Board
– MAIN Board (Side B), SUB Board –······················· 16
5-6. Schematic Diagram – MAIN Board (1/3) – ················ 17
5-7. Schematic Diagram – MAIN Board (2/3) – ················ 18
5-8. Schematic Diagram – MAIN Board (3/3) – ················ 19
5-9. IC Block Diagram ······················································· 20
5-10.IC Pin Function Description ········································ 21
6. EXPLODED VIEWS ······················································ 23
7. ELECTRICAL PARTS LIST ······································· 26
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING 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.
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.
On AC power adaptor
•Use only the AC power adaptor supplied or
recommended in “Accessories (supplied/
optional).” Do not use any other AC power
adaptor. It may cause a malfunction.
Polarity of the plug
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS 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 PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
Unleaded solder
Boards requiring use of unleaded solder are printed with the leadfree 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.
2
SECTION 1
detection lever
detection lever
MAIN board
S804
SERVICING NOTE
D-EJ2000
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 pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
BEFORE REPLACING THE OPTICAL PICK-UP BLOCK
Please be sure to check thoroughly the parameters as par the “Optical
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 yg pin
When checking FOK, remove the lead wire to disc motor.
• RF signal P-to-P value: 0.34 to 0.74 Vp-p
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S804. (push switch type)
The following checking method for the laser diode is operable.
• Method:
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. With a disc not set, turn on the S804 with a screwdriver having a
thin tip as shown in Fig.1.
3. Press the u button.
4. Observing the objective lens, check that the laser diode emits
light.
When the laser diode does not emit light, automatic power control
circuit or optical pickup is faulty.
In this operation, the objective lens will move up and down 4
times along with inward motion for the focus search.
Fig. 1 Method to push the S804
3
D-EJ2000
SERVICE MODE
The following confirmation can be performed when the Service
Mode is set.
1. How to set the Service Mode.
To set the Service Mode, the following method is available.
1) Confirm the set is not powered on.
2) Confirm the following settings.
OPEN/CLOSE detect switch (S804) ........ OFF
Solder Land (SL805) ................................ OPEN
[AVLS] switch (S802) ............................... NORM
[HOLD] switch (S801)............................... OFF
[G-PROTECTION] switch (S803) .............. 1
3) Short the solder land SL806 (TEST) on the MAIN board.
4) Turn on the main power.
– MAIN Board (Component side) –
SL806
(TEST)
SL805
(OPEN)
2. Operation when the Service Mode is set.
When the Service Mode becomes active, following messages are
displayed onthe remote control LCD.
Remote control LCD display
Microcomputer
version display
All lit
Service Mode
3. Operations by buttons or Rotary control
in the Service Mode.
The following confirmations can be performed by operating buttons
(on the CD player or the remote control) or Rotary control.
(Operation when a CD is not placed in the CD player)
• > / . button (the CD player) or > / . Rotary
control (the remote control)
Motion of the optical pick-up (to outside or inside)
Tracking/Sled servo off
Note : Be sure to keep your eyes apart from the direct emission
of the Laser diode.
Do not move the optical pick-up over outermost or
innermost.
VB100
888
DDDD
V-SUR
8
S804
(OPEN/CLOSE)
(Operation when a CD is placed in the CD player)
Procedure :
1) Confirm the set is not powered on.
2) Keep short the solder land SL806 (TEST) on the MAIN board.
3) After turning on the power, set a CD in the player.
Then press u /ENT button (the remote control)
Remote control LCD display
0000
PLAY mode
4
D-EJ2000
020002
040004
010001
(2 times)
(4 times)
(1 time)
Error rate : NG
• x button (the CD player) or x button (the remote control)
All servos (Focus/Tracking/Sled) off
• > / . button (the CD player) or > / . Rotary
control (the remote control)
Motion of the optical pick-up (to outside or inside)
Tracking/Sled servo off
• [VOL+/VOL-] button (the CD player) or VOL + / VOL - Rotary
control (the remote control)
Two step volume setting
• P MODE/F button (the remote control)
Every pressing the button changes CLV (the rotation velocity) 1
to 4 times.
Tracking/Sled servo on
Remote control LCD display
010001
040004
(To cancel this mode, turn off the power. Then set in the Service
Mode again.)
• [SOUND] button (the remote control)
Automatic adjustment of servo
(1 time)
(4 times)
5) C1 error rate display mode is active by pressing [DISPLAY] button
(the remote control).
The remote control LCD displays the following message.
Remote control LCD display
Er****
Note : Press [SOUND] button before pressing P MODE/F
button during playing a CD.
By pressing in a wrong order, the value of Er
becomes very big.
6) When [DISPLAY] button (the remote control) is pressed,
P MODE/ F button is effective again. Then the value of CLV
(the rotation verocity) becomes changeable.
Note : Error rate display at x1 speed is not available, therefore
skip “010001” (x1 speed) quickly.
Remote control LCD display
Value of ****
0000 – 0099 : OK
0100 – : NG
****
4. Error rate display
C1 error rate is displayed when the following operation are
performed during playing in the Service Mode.
1) Cancel the other Service Mode by turning off the power.
2) After turning on the power, set a CD in the player.
Then press u /ENT button (the remote control).
Remote control LCD display
0000
3) Set the automatic servo adjustment by pressing [SOUND] button
(the remote control).
4) Press P MODE/F button (the remote control) twice.
Remote control LCD display
7) C1 error rate is displayed on the LCD by pressing [DISPLAY]
button (the remote control).
Remote control LCD display
Er****
8) Turn off the power.
9) Open the solder land SL806 (TEST) on the MAIN board.
Note : The solder should be removed clean.
5
D-EJ2000
Locating the controls
SECTION 2
GENERAL
This section is extracted
from instruction manual.
CD player (front)
1 EXT BATT (external battery)/
DC IN 3 V (external power input) jack
2 Jog lever (u (play/pause)•
./> (AMS/search))
3 x (stop) /CHARGE button•
CHARGE lamp
4 OPEN switch
5 VOL (volume) +*/– control
6 LINE OUT (OPTICAL) jack
7 i (headphones) jack
8 Terminal for the charging stand
CD player (inside)
9 Battery
compartment
q; G-PROTECTION
switch
qa AVLS switch
*There is a tactile dot beside + to show the direction to turn up the volume.
CD player (rear)
qs HOLD switch
Remote control
qd x (stop) button
qf VOL (volume)
+/– control
qj Clip
ql DISPLAY
button
qg Display
qh Jog lever (u (play/pause)•
ENT (enter)•
./> (AMS/search))
w; SOUND buttonqk HOLD switch
wa P MODE/
(play mode/repeat)
button
Note
Use only the supplied remote control. You cannot
operate this CD player with the remote control
supplied with other CD players.
6
SECTION 3
SET
UPPER LID SECTION CABINET (MIDDLE) SECTION MAIN BOARD, OPTICAL PICK-UP SECTION (CDM-3325ES2)
MOTOR ASSY (TURN TABLE)(M902),
OPTICAL PICK-UP ASSY (DAX-25E)
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
Note : Follow the disassembly procedure in the numerical order given.
3-1. Upper Lid Section
2
guide plete (L)
3
screw
4
guide plete (R)
D-EJ2000
1
screw
5
upper lid assy
7
D-EJ2000
d
3-2. Cabinet (Middle) Section
1
six screws
3
two
claws
3
claw
2
screw
4
cabinet (middle) assy
5
3
claw
spring (upper lid)
3-3. MAIN Board, Optical Pick-Up Section (CDM-3325ES2)
The cautions at the time of attachment
spacer
2
connector (4P)
(CN
601
)
3
connector (2P)
(CN
602
)
7
MAIN board
1
spacer
5
CDM-3325ES2
4
flexible boar
(CN603)
8
SUB board
6
ffc cable
8
3-4. Motor Assy (Turn Table)(M902), Optical Pick-Up Assy (DAX-25E)
2
1
three screws
B 1.7 × 4
(
9
sled spring
7
screw feed assy
)
motor assy
(turn table)(
M902
)
3
three screws
B 1.7 × 4
(
4
5
6
sled motor assy
(
)
gear cover
gear (B)
M901
)
8
optical pick-up assy
(
DAX-25E
)
D-EJ2000
chassis
9
D-EJ2000
r
SECTION 4
ELECTRICAL ADJUSTMENT
Adjustment of VCPU
Connection :
• DC 3 V in DC IN jack (J402)
Digital Voltmete
MAIN board
TP (VCPU)
TP402 (GND)
Procedure :
1. Connect a digital voltmeter to the test points TP (VCPU) and
TP402 (GND).
2. Supply DC 3 V in DC IN jack (J402).
3. Adjust the RV401 so that the reading of the digital voltmeter
becomes 1.9V+0.05/-0.0V.
+
–
• Adjustment value : VCPU = 1.9V V (1.90V to 1.95V)
+ 0.05
– 0.0
Connecting points and adjusting point :
– MAIN board (Side A) –
R412
R411
L405
C451
L301
L409
R446
C430
L408
C417
C407
C411
C424
L407
C460
L411
C422
R421
C421
C423
R420
L401
L406
C416
L406
R405
RV401
TP (VCPU)
C406
Q403
R415
Q409
R456
C462
R407
C454
R404
– MAIN board (Side B) –
10
TP402
(GND)
CN402
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