Sony Dej011 Service Manual

							PORTABLE CD PLAYER
E Model
SPECIFICATIONS
D-EJ011
Ver. 1.0  2006.12
Model Name Using Similar Mechanism D-EJ010
CD Mechanism Type CDM-3525A
Optical Pick-up Name DAX-25E
9-887-511-012006L02-1
© 2006.12
Sony Corporation
Pe rsonal Audio Division
Published by Sony Techno Create Corporation
SERVICE MANUAL
System:  Compact disc digital audio system
Laser diode properties
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.)
Power requirements
• Two LR6 (size AA) batteries: 1.5 V DC  × 2
Dimensions (w/h/d) (without projecting parts and controls)
Approx. 139.8  × 27.9  × 139.8 mm
Mass (excluding accessories)
Approx.188 g
Operating temperature  5°C - 35 °C (41 °F - 95 °F)Battery life* (approx. hours)
(When the CD player is used on a flat and stable
place.)
Playing time varies depending on how the CD player
is used.G-PROTECTION G-on G-off
T wo Sony alkaline batteries LR6 (SG)
(produced in Japan)   16   11
* Measured value by the standard of JEITA (Japan
Electronics and Information Technology Industries
Association).
• The indicator sections of  
  roughly show the
remaining battery power. One section does not
always indicate one-fourth of the battery power.
Design and specifications are subject to change
without notice.
Supplied accessories
Headphones (1) 
						

							2
D-EJ011
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.
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.T ABLE OF CONTENTS
1. SERVICING NOTES
................................................ 3
2. GENERAL................................................................... 3
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 4
3-2. Cabinet (Inner) Assy,
Cabinet (Lower) Assy ...................................................... 4
3-3. Optical Pick-up (CDM-3525A), MAIN Board .................................................................... 5
4. ELECTRICAL ADJUSTMENT............................. 6
5. DIAGRAMS
5-1. Block Diagram ................................................................ 8
5-2. Printed Wiring Board– Main Board (Side A) – ................................................. 9
5-3. Printed Wiring Board – Main Board (Side B), Jack Board – ............................. 10
5-4. Schematic Diagram  – Main Board (1/2) – ..................... 11
5-5. Schematic Diagram  – Main Board (2/2), Jack Board – . 12
5-6. IC Pin Function Description ............................................ 15
6. EXPLODED VIEWS................................................. 17
7. ELECTRICAL PARTS LIST.................................. 18
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
PA RT   NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
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 viscou-s (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. 
						

							3
D-EJ011
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
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down 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 30 cm away from the objective lens.
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 S811. (push switch type)
The following checking method for the laser diode is operable.
Fig. 1 Method to push the S811
SECTION  2 GENERALThis section is extracted from
instruction manual.
LOCATING THE  CONTROLS
• Method:
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. With a disc not set, turn on the S811 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 pick-up is faulty.
In this operation, the objective lens will move up and down 2
times along with inward motion for the focus search.
S811
Remaining battery power
Sound modeTrack number
Playing time
Play mode
Bookmark
* The button has a tactile dot
.
^ *(play/pause) 
DC IN 4.5 V
2 (headphones) jack
p (stop)HOLD (rear)
VOL –/+*
Headphones
SOUND/AVLS
=+ /P MODE/
OPEN
Display 
						

							4
D-EJ011SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
3-2. CABINET (INNER) ASSY, CABINET (LOWER) ASSY
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET (INNER) ASSY,
        CABINET (LOWER) ASSY            (Page 4)
3-3. OPTICAL PICK-UP (CDM-3525A),             MAIN BOARD
                         (Page 5) SET
4 two screws
cabinet (inner) assy
cabinet (lower) assy
3 five screws
1
2
5 two claws
6 two claws 
						

							5
D-EJ011
3-3.OPTICAL PICK-UP (CDM-3525A), MAIN BOARD
MAIN Board (side A) To / F
rom
Optical devic
eCDM-3525A
BLK
RED
ORGGRY
4 MAIN board
cabinet (lower) assy
3 optical pick-up CDM-3525A
1 CN501
2 Unsolder four lead wires 
						

							6
D-EJ011SECTION 4
ELECTRICAL ADJUSTMENTS
The CD section adjustments are done automatically in this set.
Adjusting Procedure: 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
HOLD switch :OFF
Focus bias Check
Condition:
• Hold the set in horizontal state.
Connection: Procedure:
1. Make a solder bridge to short SL801 (OPEN) on the MAIN board side B.
2. Connect the oscilloscope to the test point TP604 (EQOUT) and TP406 (M-GND) on the MAIN board side B.
3. Set a disc. (YEDS-18)
4. Press the   u  button.
5. 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)
To  watch the eye pattern, set the oscilloscope to AC range and
increase the vertical sensitivity of the oscilloscope for easy w atch-ing.
6. Stop revolving of the disc motor by pressing the   x  button.
7. SL801 is opened by taking the solder bridge.
RF level 1.3 ± 0.2 Vp-p
VOLT/DIV : 500 mV (With the 10 : 1 probe in use
)TIME/DIV : 500n
s
(SIDE B)MAIN BOARD
1
25
26 50X601
S811
(OPEN)
SL801
(OPEN)
iJ30 1
E
C629 TP604
EQ OUT C627
C110
R107
R207
R101
C803
R305
L201
R211 R111
C612
R602R617
C625
R622
R625
R626R618
Q602L301L101IC602
oscilloscope (AC range)
+
–
TP604
(EQOUT)
SL801
(OPEN) 
						

							7
7
D-EJ011
D-EJ011
Note on Printed Wiring Boards.
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• a: Through hole.
• f: internal component
•
: Pattern from the side which enables seeing.
(The other layers patterns are not indicated.)
• Note for Printed Wiring Boards and Schematic Diagrams
Note on Schematic Diagrams.
•All capacitors are in  µF unless otherwise noted.  (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in  Ω and 
1/4
 W or less unless otherwise
specified.
•     f : internal tolerance.
• C : panel designation.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
•V oltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
•V oltages are taken with a VOM (Input impedance 10 M Ω).
V oltage variations may be noted due to normal produc-
tion tolerances.
•W aveforms are taken with a oscilloscope.
V oltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J : CD PLAY
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
• Indication of transistor.Note: The components identified by mark  0 or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
SECTION 5
DIAGRAMS
C
B These are omitted.
E
Q
D
G These are omitted.
S
Q
•W
averforms
1IC601  yj  XO
2 V/DIV, 50  ns/DIV
59.5 ns 4.5 Vp-p
2IC801 
yd XOUT4M 
2 V/DIV, 0.1 µs/DIV
244 ns 3.5 Vp-p 
						

							8
8
D-EJ011
D-EJ011
5-1. BLOCK DIAGRAM
: CD PLAY
• Signal Path
3
8079
3
5
65
1
7722
174
7
8
15161819
6463
51
6667
242350534947483962
272625242322
3
576
9
18
DRIVER
DRIVER
DRIVER
17
19
20
23
22
11
DIGITALFILTERSERVO
SIGNAL GEN.
RF
SIGNAL GEN.
OP IC
DIGITAL SERVO
SIGNAL GEN.
PD
LD
FDOUT
TDOUT
SDOUT
CLVOUT
TRK
FOCUS
20CLK88
CLK
TRK
SLED
CLV
XO
XI
SUBSYQ
MCK
DIN/DOUT
R/W
RESETX
BUSY
CLOCKOSC
DAC
31
36
21
35
SWITCHING
Q404
SWITCHINGQ403
171615
47-62
19-24,27-322,3,5,6,8,9,11,12,39,
40,42,43,45,46,48,49
43-32
MEMORY
CONTROLLER
41401-18 77-8029-32,34
70
LCD801
LIQUID
CRYSTAL DISPLAYKEY MATRIX
XIN4M
SUBSYQ
21CLK
MCK
DIN OUT
RW
EE_SCL
EE_SDA/REM_SDA XXRESET
BUSY
DQM
MUTE2
XRESET
SEG0
   I
SEG17
COM1
   I
COM4
KEYSCAN1
   I
KEYSCAN5
OPEN/CLOSE
HOLD
REGB
65
DC IN
30 DCIN
IC801SYSTEM
CONTROL L401
D403 F402F401
DDC
LG
PVCC
+VBAT VG
DDC
L402
L403
VG
38 VSYS
37SW
X601
16.9344MHz RDACO
LDACO
Q602
OUT1
OUT2
IN1
IN2
SDA
SCL7WP
8VCC
IC301HEADPHONE AMP
IC802EEPROM
IC401 (2/2)DC/DC CONVERTER
BD
AC
DDC
E
FO+
FO-
TRK-
TRK+
SLED+
SLED-
F
SDIN
VBIAS
AMP
10FOCUSAMP
8 SLEDAMP
7 CLVCLK
TRK
FOCUS
VREF
SLED CLVCLK
AMP
RESET
742 XP.OFF
OFF
764
MUTE34755
MUTE1
MUTE1
431
K_PLAY
WP
IC401 (1/2)FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE MOTOR DRIVE
IC602 SDRAM(16M)
RAS
CAS
WE
RASX
A00-A11
DQ0-15 RFI
EQO
CASX WEXDQ0-15 A0-11
444546
1436LDQM
UDQM3534CLK
CKE
RCLK
C2FX
YFLAG RCKE
2829
IC601RF AMP, SERVO,
DIGITAL SIGNAL PROCESSOR,
SDRAM CONTROLLER,D/A CONVERTER
J401
DC IN 4.5V
!
DRY BATTERY SIZE AA
(IEC DESIGNATION LR6) 2PCS. 3V
J301
i
(SLED)FOCUS
COIL
(SPINDLE)M
TRACKING COIL
F+
F-
T+
T-
SLED+ SLED-
DRIVER25
24
SPID+
SPIN-M
SPINDLE+
SPINDLE-
OPTICAL DEVICE
(CDM-3525A)
VCC
+
+
A
B
C
E F
LD
PD
VC
LD
DRIVER Q601
DDC
S811
(OPEN) S812
HOLD
OFF      ON S807
APC10
9
D80346K_STOP
S801
S802
|
S805 S808,
S809
+B SWITCH Q401
DC IN DETECT
Q402
L404
L405 
						

							9
9
D-EJ011
D-EJ011 5-2. PRINTED WIRING BOARD  – MAIN BOARD (SIDE A) –
 :Uses unleaded solder.
•
Semiconductor
Location
Ref. No.Location
D401 E-6
D403 D-6
D803 D-5
IC301 A-2
IC601 B-4
IC802 E-4
Q401 D-6
Q402 E-6
Q403 E-7
IC301
IC601
14
85
120 40
60
21
41
61
80
1
4
8
5
E
E
+– –+
(SLED)
M
(SPINDLE)
M
OPTICAL DEVICE (CDM-3525A) (1/2)
GRY
ORG BLK
RED
C210
R201 R205
R206 R106
R104R204
R620
R601R608 C613
C614 C615
R615 R609
R610 C609 C611C604
R606
R103
R203R616
R105
R304
R619 C108
C102
C618
R607
C605
C626
R815
R833
R834 R839
R818
R817
C809
C806C808 D803
R404 D403
R810
L406L407
CN408
CN403
CN407
CN404SLED
–
SLED+
SPINDLE
–
SPINDLE+
C405
R407 C413 R406
R405
R403D401 F402
L404
L405
C807
R410
R807
R806
C805
R840
R841
R832
Q401
Q402
Q403
C802
R804
R844
R805 R843
IC802
R614
C606 R613
L801 C202
C201
C624
C208
C306
C303
C630
C620
C101
11
(11)1-871-743-
(SIDE A)BOARD
MAIN  
234567
A 1
B
C
D
E
F
8 
						

							10
10
D-EJ011
D-EJ011
5-3. 
PRINTED WIRING BOARD  – MAIN BOARD (SIDE B)  –
 :Uses unleaded solder.
• Semiconductor
Location
Ref. No.Location
D404 E-1
IC401 D-3
IC602 B-6
IC801 E-4
Q404 E-2
Q601 C-5
Q602 A-5
1
20
21 40
1 20
60
80 40
21
61
41
1
22
BP VL
1
25
26 50
DC  IN  4.5V
J401
S803.
S802 >
S807
x
S801u
LCD801LIQUID CRYSTAL DISPLAY
S812HOLD.
1 2 15
16
OPTICAL DEVICE
(CDM-3525A) (2/2)
X601
S811
(OPEN)
SL801
(OPEN)
i
J301
S804
VOL– S808
SOUND/
AVLS
S805
VOL+ S809
P MODE/
DRY BATTERY
SIZE AA
(IEC DESIGNATION LR6) 2PCS. 3V
CN401
CN402
OFFtON
E
E
11
(11)1-871-743-
D404
Q404
C417
C406
R821C416 C401
C410 C804
C412 C403C404 L401
C411
C409
F401
CB414
IC401 IC801
SL803
R828R831 R830
CN801
C420C408
R414
R415 R402 R416
R418
R419
R417
R811
C623C628C610 C602
C607
C105
C305
C205C204
C104
C304
C601 C603
CN501
C629
TP604
EQ OUT C627
C110
R107
R207
R101
C803
R305
L201
R211 R111
C612
R603
R602 R617
C625
R622
R625
R626
R618
Q602
R604
Q601 L301
L101IC602
R812R823
R624
C619R829
C811R401
L403
C419
L402
(SIDE B)MAIN BOARD  
23456781
B A
C
D
E
F