Sony DCJ-500 Service manual

D-CJ500/CJ501/CJ506CK

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs
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 response

20 - 20 000 Hz

+1–3

dB (measured by JEITA CP-

307)

Output (at 4.5 V input level)

CJ500, CJ506CK:
Headphones (stereo minijack)

Approx.5 mW + Approx. 5 mW at 24 Ω

Power requirements

For the area code of the model you
purchased, check the upper left side of the
bar code on the package.

•Two LR6 (size AA) batteries: 3 V DC

•AC power adaptor (DC IN 4.5 V jack):
US/Canadian/E92 model:
120 V, 60 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.
Figures in brackets show the playing time of
MP3 files.

When using G-PROTECTION function

“1” “2”

Two Sony alkaline 32 30
batteries LR6(SG) [24] [24]
(produced in Japan)

*Measured value by the standard of JEITA (Japan

Electronics and Information Technology
Industries Association).

Operating temperature

5°C - 35°C (41°F - 95°F)

Dimensions (w/h/d) (excluding
projecting parts and controls)

Approx. 161.0 × 26.3 × 130.3 mm
(6

3

⁄8 × 1 1⁄16 × 5 1⁄4 in.)

Mass (excluding accessories)

Approx. 210 g (7.5 oz.)

Design and specifications are subject to change
without notice.

Headphones (stereo minijack)

CJ501:

Approx.5 mW + Approx. 5 mW at 16 Ω
(Approx. 1.5 mW + Approx. 1.5 mW
at 16

Ω

)*

*For the customers in France

Supplied accessories

For the area code of the location in which you
purchased the CD player, check the upper left side
of the bar code on the package.

CJ500:
Headphones (1)

AC power adaptor (1)
Headphones/earphones (1)

CJ501:

AC power adaptor (1)
Headphones (1)
Car battery cord (1)
Car connecting pack (1)
Velcro tape (2)

• Abbreviation
E13 : 220-230V AC area in E model.
E92 : Chilean and Peruvian model.

CJ506CK:

AEP/E13/East European/French model:
220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
Australian model: 240V, 50 Hz
Argentine model: 220 V, 50 Hz

SERVICE MANUAL

Ver 1.1 2002. 05

Photo: D-CJ500

SPECIFICATIONS

US Model

D-CJ500/CJ506CK

Canadian Model

AEP Model

UK Model

E Model

D-CJ501

Australian Model

D-CJ506CK

Model Name Using Similar Mechanism D-EQ550
CD Mechanism Type CDM-3125ER

Optical Pick-up Name DAX-25E

9-873-669-02

2002E1600-1
© 2002.05

Sony Corporation

Personal Audio Company
Published by Sony Engineering Corporation

PORTABLE CD PLAYER

D-CJ500/CJ501/CJ506CK

TABLE OF CONTENTS

1. SERVICING NOTE·························································· 3

2. GENERAL ·········································································· 4

3. DISASSEMBLY ································································ 5

3-1. Battery Case Lid, Cabinet (Upper) Assy ······················· 5
3-2. Upper Lid Assy······························································ 6
3-3. MAIN Board, MD Assy (CDM-3125ER) ····················· 6
3-4. Turn Table Motor Assy (M901)····································· 7
3-5. Motor Assy (Sled) (M902),

Optical Pick-up (DAX-25E)·········································· 7

4. ELECTRICAL ADJUSTMENTS ································· 8

5. DIAGRAMS········································································ 9

5-1. Block Diagram ···························································· 10
5-2. Printed Wiring Board – MAIN Board (Side A) –······· 12
5-3. Printed Wiring Board – MAIN Board (Side B) –······· 13
5-4. Schematic Diagram – MAIN Board (1/4) – ··············· 14
5-5. Schematic Diagram – MAIN Board (2/4) – ··············· 15
5-6. Schematic Diagram – MAIN Board (3/4) – ··············· 16
5-7. Schematic Diagram – MAIN Board (4/4) – ··············· 17
5-8. IC Pin Function Descriptions ······································ 19

6. EXPLODED VIEWS ······················································ 26

6-1. Cabinet (Front) Section ··············································· 26
6-2. Cabinet (Lower) Section ············································· 27
6-3. Optical Pick-up Section (CDM-3125ER)···················· 28

7. ELECTRICAL PARTS LIST······································· 29

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.

2

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES 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.

SECTION 1

SERVICING NOTE

D-CJ500/CJ501/CJ506CK

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 breakdo wn 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: 0.35 to 0.75 Vp-p

LASER DIODE CHECK

During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S801. (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. 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 the S801

3

D-CJ500/CJ501/CJ506CK

CD player (front)

SECTION 2

GENERAL

This section is extracted
from instruction manual.

1 i (headphones)

jack

2 OPEN button

3 VOLUME control

4 FOLDER –/+ buttons

5 MENU button

6 DISPLAY button

8 . (AMS/search) button

9 N >* (play, AMS/

search) button

q; Strap holes

qa DC IN 4.5 V

(external power
input) jack

qs x (stop) button

qd HOLD switch

7 Display

*The button has a tactile dot.

CD player (inside)

qg G-PRO (G-PROTECTION) switch

qf SOUND button

CD player (rear)

qh Battery compartment

4

SECTION 3

y

DISASSEMBLY

Note : This set can be disassembled in the order shown below.

SET

BATTERY CASE LID,

CABINET (UPPER) ASSY

(Page 5)

D-CJ500/CJ501/CJ506CK

MAIN BOARD, MD ASSY

(CDM-3125ER)

(Page 6)

MOTOR ASSY (SLED) (M902),

OPTICAL PICK-UP (DAX-25E)

(Page 7)

Note : Follow the disassembly procedure in the numerical order given.

3-1. Battery Case Lid, Cabinet (Upper) Assy

UPPER LID ASSY

(Page 6)

TURN TABLE MOTOR ASSY

(M901)

1

three

(Page 7)

screws (

+B 2 × 10

)

7

four claws

8

four claws

9

0

4

3

battery case lid

two

2

cabinet (upper) ass

5

two claws

boss

6

two claws

screws (

+B 2 × 10

)

5

D-CJ500/CJ501/CJ506CK

s

3-2. Upper Lid Assy

2

upper lid assy

1

two claw

3-3. MAIN Board, MD Assy (CDM-3125ER)

Note : When installing, fit S803 to the knob (HOLD).

1

3

2

connector (

5

connector (

CN503)

MAIN Board

connector (

CN502)

CN501)

cabinet (front) assy

4

MD Assy

terminal (–), battery (BT402)

terminal (+.–), battery (BT400)

cabinet (lower) sub assy

knob (HOLD)

S803

6

3-4. Turn Table Motor Assy (M901)

1

three

screws (

+B 1.7 × 5

2

turn table motor assy (spindle) (M901)

chassis

)

D-CJ500/CJ501/CJ506CK

3-5. Motor Assy (Sled) (M902), Optical Pick-up (DAX-25E)

1

feed screw assy

2

6

4

chassis

s

crew (

+B 1.7 × 5

motor assy (sled) (M902)

7

5

3

s

crew (

)

gear B

bracket (Shaft)

optical pick-up
(DAX-25E)

+P 1.4 × 3.5

)

7

D-CJ500/CJ501/CJ506CK

3

SECTION 4

ELECTRICAL ADJUSTMENTS

CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.

FOCUS BIAS CHECK

1. Connect the oscilloscope between TP603 (RF) and GND on
main board.

2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)

3. Press the B > button.

4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape (
center of the waveform can be clearly distinguished.

• RF signal reference waveform (eye pattern)

VOLT/DIV : 200 mV
TIME/DIV : 500 ns

RF level :

±

0.2 Vp-p

0.55

When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.

) in the

◊

Test Point:

– MAIN Board (Side B) –

IC601

04

8

SECTION 5

DIAGRAMS

D-CJ500/CJ501/CJ506CK

Note For Printed Wiring Boards And Schematic Diagrams

Note on Printed Wiring Board

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)

Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A) the pattern face are indicated.
Parts face side: Parts on the par ts face side seen from
(Side B) the parts face are indicated.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or
less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/

•%: indicates tolerance.

• C : panel designation.

Note:

The components identi­fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.

• A : B+ Line.

•Total current is measured with CD installed.

•Power voltage is dc 4.5 V and fed with regulated dc power supply
from DC IN jack (J401).

•Voltages and wavef orms are dc with respect to ground in playbac k
mode.
no mark : CD PLAY

•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production toler­ances.

•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler­ances.

• Circled numbers refer to waveforms.

• Signal path.

J : CD
c : CD-R/RW (MP3)

•Abbreviation
FR : French model.

4

W or less unless otherwise specified.

Note:

Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.

• Wavef orms

(CD play mode)

1

TP603 (RF)

600 mVp-p

200 mV/DIV, 400 ns/DIV

2

IC601 <z/n>>(LRCKO)

22.5 µs

500 mV/DIV, 5

3

IC601 rk>(XTAO)

59 ns

500 mV/DIV, 40 ns/DIV

4

IC801 q; (XTALO)

2.5 Vp-p

µ

s/DIV

1.3 Vp-p

3.2 Vp-p

125 ns

1 V/DIV, 40 ns/DIV

99

D-CJ500/CJ501/CJ506CK

5-1. Block Diagram – MAIN-1 Section –

DETECTOR

A

B

RF

E

F

VCC

OPTICAL PICK-UP

BLOCK

DAX-25E

FOCUS

COIL

TRACKING

COIL

LD

PD

M902
SLED

MOTOR

M901

SPINDLE

MOTOR

• R-ch is omitted due to

same as L-ch.

• Signal path

:CD

:CD-R/RW(MP3)

A

B

RF

E

F

VCC1 +2V

OPGSW

OPSTB

F+

F–

T+

T–

LD

PD

S+

Q404,405

LD

DRIVER

28

26

23

21

63

64

59

60

32

M

S–

C+

30

19

M

C–

17

FO2

RO2

FO3

RO3

RF2

INM2

RF21

PAPC

FO1

RO1

FO4

RO4

IC401 (1/2)

FOCUS/TRACKING COIL DRIVER,

SPINDLE/SLED MOTOR DRIVER

DRIVER

LEVEL

SHIFTER

DRIVER

PD AMP

DRIVER

DRIVER

CONTROLLER

LD AMP

RI1

RI2

RI3

PWM/FI4

PDL/RI4

VINDET

APCREF

IC601

RF AMP,

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

D-RAM CONTROLLER

AOUT1

LPF

A0-A10

7

82

89

XQOK_O

AMUTE_O

D0-D3

XWRE_O

51

AOUT2

56

LRMU

61

4, 3,

6, 5

116-113,

17-15,
13-11,

117

XRAS

1

XWE

2

XCAS

9

PCMD_I

PCMD_O

LRCK_I

107

LRCK_O

BCK_I

111

BCK_O

XRDE

18

XTAO

48

XTAI

47

XRST

28

53 96

XRST_O

IC804

BUFFER

WDCK

GFS

MDS

XTAO

XTAI

RFAC

MDP
XSOE
SENS

XLAT
CLOK
SCOR
SDTO

RFDC

SFDR

SRDR

FFDR
FRDR
TFDR

TRDR

E

F
B
A

SENS

3

5

PROCESSOR

SENS

SIGNAL

BLOCK

SCOR

27

1

7

SCOR_INT

SERVO
BLOCK

WDCK

26

6

2

1740

GRSCOR_INT

CONTROLLER,

XSOE

2422

46

XSOE_O

MEMORY

BUS BOOST

BLOCK

GFS

69

351

87

GFS_I

3

FOK

65

IC803

BUFFER

7

86

FOK_I

SYSTEM CONTROL

SYSM30XQOK31XWRE

25

51

IC801 (1/2)

A

92

B

91

RFDC

88

RFAC

84

E

89

F

90

FI1

33
34

FI2

35
36

FI3

13
14

A

1

3

15

16

62

61

IC403

COMPARATOR

4

B+ +3V

B

C

OPGSW
OPSTB

SYNC

SDTO

SCK

100

99

96
95

98
97

104

103

102

83

100

95

SFDR
SRDR

FFDR
FRDR

TFDR
TRDR

C176

MDP

MDS

STB_RW_O

OPGSW
OPSTB

SDTO

21

41

SDTO

CLOK

XLAT

2320

5542 16

SCK

XLAT

R-CH

X601

16.9MHz

RV301

VOLUME

2, 3,

24, 25

19-12,
15-19,

21,8

5
4

23

IC703

BUFFER

17

35

62

92

14

19

D0-D3

XRAS
XWE
XCAS

12108

14106

13110

60

62

XRDE_O

HEADPHONE AMP

LIN

MUTE

MT SW

PW SW

IC602

D-RAM

A0-A10

SDO

9109

SDI0

LRCKIA

BCKIA

CKO

XI

/RESET

MP3_DSP_RST

IC301

BEEP

PWRSW

IC701

MP3 DECODER

MIDIO

/MICK

STANDBY

19

4554761 98

SCL0(I2C)

SDA0(I2C)

STANDBY_O

LOUT

R-CH

BEEP

PO7

391

Q701

MP3DSP_I

49

44

BEEP_O

XAPCOFF_O

R-CH

8

17

20

J301

i

1010

– MAIN-2 Section –

S804 - 807
FUNCTION

KEY

S808 - 811
FUNCTION

KEY

Q801,803

DETECT

S801

(CD DOOR OPEN)

S802

G-PRO

2

1

S803

HOLD

ON

OFF

KEY

28

KEY1_AD

29

KEY2_AD

KEY_INT

19

18

OPENSW_INT

88

GPRO_I

90

HPLD_I

D0 - D7

WR1

LCD_RST_O

XLIGHT-ON

D-CJ500/CJ501/CJ506CK

LCD801

LIQUID CRYSTAL

DISPLAY

56-63

A0

64

RD

77
78
97

Q802

SWITCH

52

IC802

RESETRESET

DD0 - DD7

A0
RD
WR1
LCD_RST_O
V5

V5_OUT

VCPU3V

3115

Q804

LED

DRIVER

Q410

B+

SWITCH

3.0V

D802

DC/DC CONVERTER

VCC1+2V

VCPU +2V

VCC2 _2.5V

D410

IC402

23

Q406

B+ SWITCH

Q407

B+ SWITCH

SYNC

A

SDTO

B

SCK

C

L410

IC701

VDD

D407

D411

Q409

B+

SWITCH

Q408

STNG

54

INP1

48

DTC1D

45

VLGO1

49

VCPU2 (2.0V)

42

VCPU1 (2.5V)

43

VCC1(2.5V)

44

SYNC

5

WAKEUP

6

DATA

8

CLOCK

7

LATCH

9

RSTB

4

VREF

58

VCPU2 (2.0V)

VCPU1 (2.5V)

VCC1

IC401 (2/2)

POWER CONTROL

SWITCHING

POWER

CIRCUIT 2

CHARGE

CONTROL

CHG ON/OFF

CHARGE
SWITCH

CLK

OR OSC

INTERFACE

AMP

SAWTOOTH

GENERATOR

SWITCHING

POWER

CIRCUIT 5

STANDBY

REFERENCE

BANDGAP

REFERENCE

(VREF)

DC IN

VIN

CHGSW

RF4

DCIN

VG

BIAS

53

B+ +3V

HEADPHONE AMP

D403

L401

IC401

IC301

B+

B–

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

2PCS,3V

J401

DC IN 4.5V

!

FOCUS/TRACKING COIL DRIVER
SPINDLE/SLED MOTOR DRIVER,

37

RS

38

40

Q403
DC IN

DETECT

Q402
GATE

L405

41

L4

1

VG

2

D408

D404

Q401

SWITCH

X801

8MHz

11

XTALI

10

XTALO

4854

IC801 (2/2)

SYSTEM CONTROL

XPOWLT_O

WAKEUP_O

BAT1MNT_AD

DCINMNT_AD

DCIN_INT

25

21

31

1111