Sony CDX-525RF - Compact Disc Changer System Bedienungsanleitung

SERVICE MANUAL

CDX-525RF

SUPPLEMENT-1

File this supplement with the service manual.

US Model

Canadian Model

AEP Model

UK Model

E Model

Subject: Mechanism Deck Modification (MG-250D-137)

(ECN-CSA00838)

The mechanism deck was changed from MG-250C-137 to MG-250D-137.

At the same time, MAIN and JACK boards were been changed.

This supplement contains only a new type mechanism deck and boards.

TABLE OF CONTENTS

1. NEW/FORMER DISCRIMINATION.................... 2

2. DISASSEMBLY ......................................................... 3

3. DIAGRAMS

3-1. Note for Printed Wiring Boards

and Schematic Diagrams ................................................ 5

3-2. Printed Wiring Boards – RF Section – .......................... 6

3-3. Schematic Diagram – RF Section –............................... 7

3-4. Schematic Diagram – MAIN Section (1/2) –................ 8

3-5. Schematic Diagram – MAIN Section (2/2) –................ 9

3-6. Printed Wiring Boards

–MAIN Board (Component Side) – ............................... 10

3-7. Printed Wiring Board

–MAIN Board (Conductor Side) – ................................. 11

3-8. Printed Wiring Boards – JACK Boards –...................... 12

4. EXPLODED VIEWS ................................................ 12

5. ELECTRICAL PARTS LIST ............................... 17

1. NEW/FORMER DISCRIMINATION

7Y187A

C: MG-250C-137 (Former type)

D: MG-250D-137 (New type)

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

2. DISASSEMBLY

MECHANISM DECK (MG-250D-137)

tension spring (FL)

two dampers (250)

jack flexible board

(CNJ901)

firament tape

mechanism deck (MG-250D-137)

MAIN BOARD

main flexible board

(CNJ12)

three screws (FP)

main board

Break the soldering

of motor (M104) lead.

screw

(PTT2

heat sink

two precision screws

(P1.7

2.5)

RF BOARD

two screws

(PTT2

connector

(CNP53)

RF board

two screws

(PS2

OP flexible board

(CNJ11)

Break the soldering

of motor (M102) lead.

Break the soldering of lead.

CHUCKING MOTOR ASS’Y (M103)

Break the soldering

of motor (M103) lead.

two screws (PTT2

chucking motor ass’y

(M103)

retainer (CHM)

3. DIAGRAMS

3-1. 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.

•z: Through hole.

•b: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:

Pattern face side: Partson thepatternface sideseenfrom

(Conductor Side) the pattern face are indicated.

Parts face side: Parts on the parts face side seen from

(Component Side) 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 Ωand 1/4W or less unless otherwise

specified.

•f: internal component.

•C: panel designation.

•U: B+ Line.

•H: adjustment for repair.

• Powervoltage isdc14.4V andfedwith regulateddcpower

supply from CD changer controller.

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.

no mark : CD PLAY

• Voltages are takenwith aVOM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

J: CD PLAY

Note:

The components identi-

fied by mark 0or dotted

line with mark 0arecriti-

cal for safety.

Replace only with part

number specified.

Note:

Lescomposants identifiés par

une marque 0sont critiques

pour la sécurité.

Ne les remplacer que par une

pièce portant le numéro

spécifié.

CDX-525RF

3-2. PRINTED WIRING BOARDS – RF Section –

• Semiconductor

Location

Ref. No. Location

IC11 D-7

IC51 B-9

IC52 H-4

Q11 E-8

C52

C60

C59

R62

R63

C55

R57

R58

R65

R56

C54

R61

C21

R30

R64

C31

C38

C34

R40

C26

C39

C12

C19

C18

C10

CNP53

C56

C58

C57

IC52

1-676-014-

(11)

RF BOARD (COMPONENT SIDE)

R51

R53

C51

R52

R54

R31

R60

R32

RV14

C22

C24

R39

C28

R37

C25

R34

C29

R41

C35

R47

R42

R43

R45

C37

R46

C36

R44

IC11

C43

C17

C16

C14

R25

R18

R26

C15 R17

R59

C53

R50

C42

C41

R55

R49

R27

C32

C30

C27

C33

R38

R36

R35

R48

R14

R11

R22

R16

C40

R28

C23

R33

R12

R13

BCE

C13

CNJ11

Q11

1-676-014-

(11)

RF BOARD (CONDUCTOR SIDE)

IC51

CNJ12

SW1

(LIMIT)

SW BOARD

1-664-104- 11

(11)

M101

(SPINDLE)

MAIN

BOARD

OPTICAL PICK-UP

BLOCK

(KSS-521A)

OP FLEXIBLE BOARD

1-664-626- 11

SW11

CHUCKING END

DETECT

SW12

SAVE END

DETECT

1234567891011

BLU

YEL

BLU

3927

28 22 21 15

MAIN FLEXIBLE BOARD

1-679-339- 11

BP12 (FE)

(VC)

(FE0)

BP11 (TE)

TP (TE1)

(RF)

TP (GND)

(Page 10)

CDX-525RF

3-3. SCHEMATIC DIAGRAM – RF Section –

The components identified by mark 0or dotted

line with mark 0are critical for safety.

Replaceonlywith part number specified.

Lescomposants identifiés parune marque 0sont

critiques pour la sécurité. Ne les remplacer que

par une pièce portant le numéro spécifié.

(Page 8)

CDX-525RF

3-4. SCHEMATIC DIAGRAM – MAIN Section (1/2) –

(Page 7)

CDX-525RF

3-5. SCHEMATIC DIAGRAM – MAIN Section (2/2) –

1010

CDX-525RF

3-6. PRINTED WIRING BOARDS – MAIN Board (Component Side) –

• Semiconductor

Location

Ref. No. Location

D201 D-4

D202 F-3

D203 H-5

D204 H-5

D205 I-6

D206 H-5

D207 H-5

D301 F-8

D311 G-4

D416 C-6

D417 C-6

D501 F-3

D502 F-4

D503 F-4

D504 F-4

D505 F-3

IC101 C-9

IC202 H-5

IC204 F-5

IC301 H-4

IC302 E-9

IC401 B-6

Q202 C-3

Q203 I-5

Q204 I-6

Q205 H-6

Q301 F-10

Q401 E-5

Q402 E-4

Q403 D-4

Q404 D-4

R213

R212

R104

R105

C806

C104

C103

C124

R103

R101

C102

C107

R102

R106

C105

C106

C101

C123

C110 C108

R318

C402

C121

C309

R331

C306

C122 R301

C807

FB101

FB102

FB103

FB401

FB414

FB412

FB413

FB411

R306

R313

C304

R302

R305

R312

R308

R303

C305

R304

R319

R307

R310

R401

C408

C403C406

R411

R202

R201

C203

C413 C414

C412

R408

R406

R407

R405

FB421

FB422

FB423

R501

C502

C501

C205

C308

R343 R321

C302

C310

C503

C208

C213

C211

C212

R205

R206

R203

R208

R204

R311

R207

D505 D503 D502 IC204

D311

D301

D417

D416

D504D501

D201

D202

BCE

Q202

BCE

BCE BCE

BCE

Q402

Q403

Q404

Q401

Q204

BCE

Q205

Q203

BCE

D206

D207

D205

Q301

IC302

D203

D204

X401

IC101

IC401

IC301

MAIN BOARD (COMPONENT SIDE)

1-672-619- (12)

2C 1B

31 26

81 100

2441

65 80

40 25

100

814

AK C

IC202

1-676-340- 11

JACK FLEXIBLE BOARD

JACK BOARD

CNJ901

1-676-339- 11

MAIN FLEXIBLE BOARD

RF BOARD

CNJ12

113

(ELEVATOR)

2 3 4 5 6 7 8 9 10 11

BLE

RED

X301

C109 +

(Page 6)

(Page 12)

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