Sony 3-M-5-18-C-821 Service manual

3M5F-18C821

(

CDX-5F821N/5F821R

)

SERVICE MANUAL

Ver 1.0 2002.08

• CDX-5F821N VERSION: –DB

• CDX-5F821R VERSION: –AB

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICKUP 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 pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objectiv e lens.

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.

TEST DISC

This set can playback a CD-R, CD-RW for audio use. When test this set, use the following test disc. Test disc for CD-R: TCD-R082LMT (Part No.: J-2502-063-1) Test disc for CD-RW: TCD-W082L (Part No.: J-2502-063-2)

When replacing the main chassis assy of mechanism deck which have the “CAUTION LABEL” attached, please be sure to put a new CA UTION LABEL (3-223-913-11) to the main chassis assy.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS 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

SECTION 1

DISASSEMBLY

• This set can be disassembled in the order shown below.

1-1. DISASSEMBLY FLOW

Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed. Note 3: Illustration of disassembly is omitted.

SET

1-2. COVER (UP), CHASSIS ASSY

(Page 4)

1-3. BRACKET (L), BRACKET (R)

(Page 4)

3M5F-18C821

1-4. CHASSIS (T)

(Page 5)

1-7. FLOATING BLOCK ASSY

(Page 6)

1-8. CHUCKING ARM ASSY

(Page 7)

1-9. OPTICAL PICK-UP (KSS-720A)

(Page 7)

1-5. MD BOARD

(Page 5)

1-6. LOADING MOTOR SUB ASSY (M103)

(Page 6)

3

3M5F-18C821

Note: Follow the disassembly procedure in the numerical order given. Note: Screws and washers cannot be re-used.

Please replace to brand-new ones once screws and washers are removed.

1-2. COVER (UP), CHASSIS ASSY

1

two screws (PTT2.6

×

6)

2

cover (up)

1

two screws (PTT2.6

×

6)

1-3. BRACKET (L), BRACKET (R)

2

two screws (P2.6 × 4)

1

connection (C1) cord (CN3)

3

bracket (L)

3

4

chassis assy

5

bracket (R)

4

two screws (P2.6 × 4)

4

1-4. CHASSIS (T)

2

two screws (P2

3M5F-18C821

×

3)

4

Remove the chassis (T) in the direction of the arrow.

3

claw

1-5. MD BOARD

1

Remove two solders of loading motor sub assy (M103) lead wires.

1

Remove two solders of LED board lead wires.

3

three screws

2

motor flexible board (CN2)

6

MD board

5

OP flexible board (CN1)

1

Remove two solders of LED board lead wires.

4

Open the MD board.

5

3M5F-18C821

1-6. LOADING MOTOR SUB ASSY (M103)

3

Remove two solders of loading motor sub assy (M103) lead wires.

5

loading motor sub assy (M103)

4

two screws (P2

2

gear (PS) assy

×

3)

1-7. FLOATING BLOCK ASSY

1

Shifting the lever (D) fully in the direction of arrow A, turn the load ring fully in the direction of arrow

2

tension spring (F/B)

6

two coil springs (damper)

B

1

two screws

×

3)

(P2

.

5

floating block assy

4

6

two coil springs (damper)

load ring

lever (D)

3

two dampers

3

two dampers

A

B

6

1-8. CHUCKING ARM ASSY

2

extension spring (S)

4

boss

3

Open the chucking arm assy.

5

chucking arm assy

4

boss

3M5F-18C821

1

extension spring (CH)

1-9. OPTICAL PICK-UP (KSS-720A)

6

two screws (PS2

×

4)

4

screw (PS2

×

4)

A

B

3

leaf spring (feed)

7

Open the SL driving block assy in the direction of arrow

A

.

C

2

screw (P2

×

3)

1

OP flexible board

9

8

Pick up the shaft (feed) assy in the direction of arrow

B

in the direction of arrow

and pull it out

optical pick-up (KSS-720A)

C

.

5

base cover, leaf spring (SL)

7

3M5F-18C821

MEMO

8

2-1. BLOCK DIAGRAM – SERVO Section –

3M5F-18C821

SECTION 2

DIAGRAMS

DETECTOR

A

B

C

D

E

F

LASER DIODE

OPTICAL

PICK-UP BLOCK

(KSS-720A)

2-AXIS DEVICE

(TRACKING)

(FOCUS)

I-V AMP

PD LD

RF AMP,

FOCUS/TRACKING ERROR AMP

RFAC

SUMMING

AMP

A

6

B

7

C

8

D

9

E

10

E I-V AMP

F

11

F I-V AMP

AUTOMATIC

POWER

CONTROL

Q1

VC

M101

MM

(SLED)

M102

M103

MM

M

(SPINDLE)

(LOADING)

IC1

AC

SUM

4

SWITCH

Q6, 7

RFDC

SUMMING

AMP

FOCUS

ERROR AMP

CENTER

ERROR AMP

TRACKING

ERROR AMP

RW/ROM

LD

1

APC AMP

27

VC

TRACKING/FOCUS COIL DRIVE,

SLED/SPINDLE MOTOR DRIVE

IC300

OUT1R

23

MOTOR

COIL

OUT1F

DRIVE

21

27 25

10 11

DRIVE

OUT2F

COIL

OUT2R

DRIVE

OUT3R

MOTOR

OUT3F

DRIVE

OUT4F

6

MOTOR

OUT4R

DRIVE

8

LOADING MOTOR DRIVE

OUT1

9

MOTOR

OUT2

7

DRIVE

RF

IC9

RWSW

DVC

RFDCO

TE BAL

PD

TFDR

TRDR

FFDR

FRDR

SFDR

SRDR

IN4F

3

FIN

RIN

EQ IN

FE

CE

TE

12

2

14

MIRR/DEFECT

Q100, 101

RFAC

VCA

28

16

20

18

19

19 18

29 30

14 15

4 3

3 4

SWITCH

RF

FE

CE

TE

48 49

50 51

46 47

44 43

RF EQ

AMP

BST

24

TFDR TRDR

FFDR FRDR

SFDR SRDR

MDS MDPIN4R

RFAC

EQUALIZER

ON/OFF

SWITCH

Q10

63

PWM GENERATOR

DIGITAL

CLV

15

D-RAM

RFRFDC

58

VC

OP AMP

ANALOG SW

A/D CONVERTER

SERVO DSP

IC100

DQ1 – DQ4

A0 – A10

RAS CAS

WE

OE

FE

MIRR

33

DFCT

34

RFAC

71

ASYI

73

ASYO

74

2, 3,

24, 25

21, 8

9 – 12, 15 – 19,

5

23

4

22

TE

CE

61605962

TE

SE

CE

MIRR DECT

FOK

ASYMMETRY

CORRECTOR

118, 117

116, 115,

3 – 1, 111

109 – 106, 7 – 5,

113 119 114 120

D0 – D3

A0 – A10

XRAS XCAS XWE XOE

XRDE XWRE XQOK

FILTER

66 69 68 67

FILI

PCO

FILO

CLTV

DIGITAL

PLL

&

VIBRATION MEMORY CONTROLLER

EFM

DEMODULATOR

COMPRESSION EXPANDER

SUBCODE

PROCESSOR

D/A

INTERFACE

32k RAM

ERROR

INTERNAL BUS

CORRECTOR

CPU

INTERFACE

SERVO AUTO SEQUENSOR

SERVO

INTERFACE

SSTP

45

GRSCOR

GFS

DATA CLOK XLAT

SENS

SQSO SQCK SCOR

XRDE

XWRE

XQOK

SCLK

FOK

XRST

DIGITAL

OUT

SELECTOR

DOUT

PCMD

BCK

LRCK

SDI, BCK, LRCK

SDI

BCK

LRCK

85

PCMDI

1588

88 90 86

158889

BCKI

91

LRCKI

87

CD MUTE

22 13

SYSM

D/A

CONVERTER

AMUTE

LOW-PASS

FILTER

LOUT1

LOUT2

15881597

104

AIN1

15881598

LOW-PASS

AIN2

103

FILTER

AOUT1

AOUT2

CD MUTE, AMUTE

99

102

L

R

SDO

L, R

A

(Page 10)

B

(Page 10)

C

(Page 10)

D

(Page 10)

SIGNAL PATH

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

D-RAM CONTROLLER

IC101

CD-R(ROM)/RW

SELECT SWITCH

Q4

1578

1581

1523 1525 1524

1526

1514 1515 1517

159 158 1512

27

35

21

D200

DETECT SENSOR

DISC IN

Q702

DISC OUT

Q701

RW SEL

24

40

GRSCOR

19

GFS

10

CDDAT

9

CDCLK

11

CDLAT

8

SENS

SQSO

84

SQCK

85 38

SCOR

4

XRDE

6

XWRE

17

XQOK

SYSTEM CONTROLLER

IC200 (1/2)

7

SCLK

20

FOK

16

XRST

TE BAL43

LM LO

34

LM LJ

35

27

D-IN

28

D-OUT

51TEMP

29LIM SW

ON : When the optical pick-up is inner position

45D-SW

ON : When completion of the disc

THP200

(LIMIT)

(DISC SET)

chucking operation.

CLOCK

GENERATOR

XTAO

XTAI

93 94

X1

16.9344MHz

: CD PLAY

XTAL-IN

TC-XRDE

E

(Page 10)

F

(Page 10)

99

3M5F-18C821

2-2. BLOCK DIAGRAM – MAIN Section –

D

(Page 9)

L, R

L

R

LOW-PASS FILTER,

LINE AMP

IC401

LOW-PASS FILTER,

LINE AMP

IC400

CN3

1

3

AUDIO L

AUDIO R

A

(Page 9)

B

(Page 9)

E

(Page 9)

F

(Page 9)

C

(Page 9)

SIGNAL PATH

SDI, BCK, LRCK

SDO

XTAL-IN

TC-XRDE

CD MUTE, AMUTE

: CD PLAY

AMUTE

CD MUTE

MUTING CONTROL

SWITCH

Q402

13

CD MUTE

MUTING

Q400, 401

MUTING CONTROL

SWITCH

Q403

SDI

BCK

LRCK

IC502

15

MUTE

12 SDIO

13 BCKIA

14 LRCKIA

9 SDO

62 X1

60 ACKO

CD-ROM DECODER,

MP3 DECODER

IC501

PO719STANBY1/RESET5I2C SDA6I2C SCL

39

72

3

2

80

81

SCL

DECINT

DECSTBY

SDA

DECXRST

51,

−

55

IO7

−

53

IO0

46, 47, 49

31, 41,

−

AD16

−

36, 34

AD0

−

3, 4, 7, 10, 11, 15,

38

16CE 43WR 17OE

42, 45, 44

29

−

IO8

−

23, 25

IO1

−

21

S-RAM

IC500

A16

−

A0

13, 3, 2, 31, 1,

−

12, 4, 11, 7, 10

20

30 CS1

5WE

32 OE

12.288MHz

SYSTEM CONTROLLER

IC200 (2/2)

31TXD

32RXD

88FL BOOT

91WP

59RSTX

+2.5V

INVERTER (IC502) B+

+2.5V

CD-ROM/MP3 DECODER

(IC501) B+

+3.3V

CD-ROM/MP3 DECODER

(IC501) B+

SW B/U +3.3V

DISC IN/OUT DETECT

SW3.3V CONT

65

X2

EXTAL

63

XTAL

CDMON

CDON

96

71

70

POWER ON/OFF

CONTROL SWITCH

Q202

SENSOR (Q701, 702) B+

SERVO +3.3V

D-RAM (IC100),

DSP (IC101) B+

DRV +5V

COIL/MOTOR DRIVE

(IC300) B+

LE +5V

LOADING MOTOR

DRIVE (IC9) B+

+3.8V

DSP (IC101) B+

+9V

LOW-PASS FILTER,

LINE AMP

(IC400, 401) B+

+5V

OPTICAL PICK-UP

BLOCK B+

B+ SWITCH

Q501, 502

+3.3V

REGULATOR

IC600

+3.8V

REGULATOR

IC605

+2.5V

REGULATOR

IC604

B+ SWITCH

Q600, 606

B+ SWITCH

Q603, 604

+9V

REGULATOR

IC603

+5V

REGULATOR

IC601

+3.3V

SYSTEM CONTROLLER

(IC200) B+

B+ SWITCH

Q500

B+ SWITCH

Q203

+5V

DISC IN/OUT DETECT

SENSOR B+

B+ SWITCH

Q601, 602

8

7

6

5

4

14

13

19

20

DATA OUT

DATA IN

MODE

WP

RST

UCOM 3.3V

SERVO 5V

BATTERY

TO

MOTHER

BOARD

1010

Sony 3-M-5-18-C-821 Service manual

TABLE OF CONTENTS

SERVICING NOTES

DISASSEMBLY

1-1. DISASSEMBLY FLOW

1-2. COVER (UP), CHASSIS ASSY

1-3. BRACKET (L), BRACKET (R)

1-4. CHASSIS (T)

MD board

loading motor sub assy (M103)

floating block assy

chucking arm assy

optical pick-up (KSS-720A)

2-1. BLOCK DIAGRAM – SERVO Section –

DIAGRAMS

2-2. BLOCK DIAGRAM – MAIN Section –