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

⁄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

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.

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

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

SECTION 3

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)

three

(Page 7)

screws (

+B 2 × 10

)

four claws

battery case lid

two

cabinet (upper) ass

two claws

boss

two claws

screws (

+B 2 × 10

)

D-CJ500/CJ501/CJ506CK

3-2. Upper Lid Assy

upper lid assy

two claw

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

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

connector (

CN503)

MAIN Board

connector (

CN502)

CN501)

cabinet (front) assy

MD Assy

terminal (–), battery (BT402)

terminal (+.–), battery (BT400)

cabinet (lower) sub assy

knob (HOLD)

S803

3-4. Turn Table Motor Assy (M901)

three

screws (

+B 1.7 × 5

turn table motor assy (spindle) (M901)

chassis

)

D-CJ500/CJ501/CJ506CK

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

feed screw assy

chassis

crew (

+B 1.7 × 5

motor assy (sled) (M902)

crew (

)

gear B

bracket (Shaft)

optical pick-up (DAX-25E)

+P 1.4 × 3.5

)

D-CJ500/CJ501/CJ506CK

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

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.

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)

TP603 (RF)

600 mVp-p

200 mV/DIV, 400 ns/DIV

IC601 <z/n>>(LRCKO)

22.5 µs

500 mV/DIV, 5

IC601 rk>(XTAO)

59 ns

500 mV/DIV, 40 ns/DIV

IC801 q; (XTALO)

2.5 Vp-p

s/DIV

1.3 Vp-p

3.2 Vp-p

125 ns

1 V/DIV, 40 ns/DIV

D-CJ500/CJ501/CJ506CK

5-1. Block Diagram – MAIN-1 Section –

DETECTOR

VCC

OPTICAL PICK-UP

BLOCK

DAX-25E

FOCUS

COIL

TRACKING

COIL

M902 SLED

MOTOR

M901

SPINDLE

MOTOR

• R-ch is omitted due to

same as L-ch.

• Signal path

:CD

:CD-R/RW(MP3)

VCC1 +2V

OPGSW

OPSTB

F+

F–

T+

T–

S+

Q404,405

DRIVER

S–

C+

C–

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

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

XQOK_O

AMUTE_O

D0-D3

XWRE_O

AOUT2

LRMU

4, 3,

6, 5

116-113,

17-15, 13-11,

117

XRAS

XWE

XCAS

PCMD_I

PCMD_O

LRCK_I

107

LRCK_O

BCK_I

111

BCK_O

XRDE

XTAO

XTAI

XRST

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

F B A

SENS

PROCESSOR

SENS

SIGNAL

BLOCK

SCOR

SCOR_INT

SERVO BLOCK

WDCK

1740

GRSCOR_INT

CONTROLLER,

XSOE

2422

XSOE_O

MEMORY

BUS BOOST

BLOCK

GFS

351

GFS_I

FOK

IC803

BUFFER

FOK_I

SYSTEM CONTROL

SYSM30XQOK31XWRE

IC801 (1/2)

RFDC

RFAC

FI1

33 34

FI2

35 36

FI3

13 14

IC403

COMPARATOR

B+ +3V

OPGSW OPSTB

SYNC

SDTO

SCK

100

96 95

98 97

104

103

102

100

SFDR SRDR

FFDR FRDR

TFDR TRDR

C176

MDP

MDS

STB_RW_O

OPGSW OPSTB

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

IC703

BUFFER

D0-D3

XRAS XWE XCAS

12108

14106

13110

XRDE_O

HEADPHONE AMP

LIN

MUTE

MT SW

PW SW

IC602

D-RAM

A0-A10

SDO

9109

SDI0

LRCKIA

BCKIA

CKO

/RESET

MP3_DSP_RST

IC301

BEEP

PWRSW

IC701

MP3 DECODER

MIDIO

/MICK

STANDBY

4554761 98

SCL0(I2C)

SDA0(I2C)

STANDBY_O

LOUT

R-CH

BEEP

PO7

391

Q701

MP3DSP_I

BEEP_O

XAPCOFF_O

R-CH

J301

1010

– MAIN-2 Section –

S804 - 807 FUNCTION

KEY

S808 - 811 FUNCTION

KEY

Q801,803

DETECT

S801

(CD DOOR OPEN)

S802

G-PRO

S803

HOLD

OFF

KEY

KEY1_AD

KEY2_AD

KEY_INT

OPENSW_INT

GPRO_I

HPLD_I

D0 - D7

WR1

LCD_RST_O

XLIGHT-ON

D-CJ500/CJ501/CJ506CK

LCD801

LIQUID CRYSTAL

DISPLAY

56-63

77 78 97

Q802

SWITCH

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

Q406

B+ SWITCH

Q407

B+ SWITCH

SYNC

SDTO

SCK

L410

IC701

VDD

D407

D411

Q409

B+

SWITCH

Q408

STNG

INP1

DTC1D

VLGO1

VCPU2 (2.0V)

VCPU1 (2.5V)

VCC1(2.5V)

SYNC

WAKEUP

DATA

CLOCK

LATCH

RSTB

VREF

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

BIAS

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,

Q403 DC IN

DETECT

Q402 GATE

L405

D408

D404

Q401

SWITCH

X801

8MHz

XTALI

XTALO

4854

IC801 (2/2)

SYSTEM CONTROL

XPOWLT_O

WAKEUP_O

BAT1MNT_AD

DCINMNT_AD

DCIN_INT

1111

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