Technics SAAK-210 Schematic

Service Manual

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ORDER NO. MD0302054C2

CD Stereo System

l

SA-AK210E SA-AK210EB SA-AK210EG

Colour

(S)... Silver Type

TAPE SECTION :

SG-2W MECHANISM SERIES

Specifications

AMPLIFIER SECTION

RMS Power output

10% Total harmonic distortion

1kHz, both channels driven

(Low channel) 55 W per channel (6Ω )

10kHz, both channels driven

(High channel) 55 W per channel (6Ω )

Total Bi-Amp power 110 W per channel

Input sensitivity

AUX 250 mV

Input Impedance

AUX 13.3 kΩ

FM TUNER SECTION

Frequency range 87.50 - 108.00 MHz (50 kHz steps)

Sensitivity 1.8μ V (IHF)

S/ N 26 dB 1.5μ V

Antenna terminal(s) 75Ω (unbalanced)

AM TUNER SECTION

Frequency range 522 - 1629 kHz (9 kHz steps)

Sensitivity

S/ N 20 dB (at 999 kHz) 560μ V/ m

CASSETTE DECK SECTION

Track system 4 track, 2 channel

Heads

Record/ playback Solid permalloy head

Erasure Double gap ferrite head

Motor DC servo motor

Recording system AC bias 100 kHz

Erasing system AC erase 100 kHz

Tape speed 4.8 cm/ s

Overall frequency response (+ 3 dB, -6 dB at DECK OUT)

NORMAL (TYPE I) 35 Hz - 14 kHz

S/ N 50 dB (A weighted)

Wow and flutter 0.18% (WRMS)

Fast forward and rewind time Approx. 120 seconds with

C-60 cassette tape

CD SECTION

Sampling frequency 44.1 kHz

Decording 16 bit linear

Pickup

Beam source/ wavelength Semiconductor laser/ 780 nm

Number of channels Stereo

Frequency response 20 Hz - 20 kHz (+ 1, -2 dB)

Wow and flutter Below measurable limit

Digital filter 8 fs

D/ A converter MASH (1 bit DAC)

http://servis-manual.com/

SCHEMATIC DIAGRAM -1

OPTICAL PICKUP CIRCUIT

LASER DIODE

6 8

11

C

12 10

5

1

4 9

2

3

4

C

GND

VCC

BIN

AIN

NBOUT

NAOUT

VREF

C

GND

C

8

7

6

5

: +B SIGNAL LINE

: CD-DA SIGNAL LINE

CD SERVO CIRCUIT

R701

Q701

R750

4.7

C713

0.1

C750

0.1

4.7 C701

6.3V33

Q701

B1ADCF000001

LASER POWER DRIVE

C714

6.3V100

1 2 3 4

PDE

FBAL

C712

0.1

C711

0.1

R708

22K

29

52262172081991810171116121513 14

LD

RF

PDF

VCC

TBAL

VREF

2728

C749

2200P

R707

39K

PDB

PDA

FEN

FEOUT

C747 180P

R744 120K

R7061KR704

LPD

IC701

AN8885SBE1

SERVO AMP

TEN

TEOUT

NC

23242526

C710 120P

R702

R705

10K

150K

C742

0.027

1K

RFIN

NC

C702

C703

6.3V100

C704

0.1

C706

2700P

C707

0.1

0.027

CEA

BDO

GND

CSBRT

ENV

LDON

OFTR

PDOWN

/RFDET

NC

1

VCC

2

PDF

3

PDE

4

LD

5

LD GND

6

6 7 8 9

10 11 12 13 14 15 16

CN701

GND

7

NB

8

GND

9

NA

10

VREF

11

LPD

12

GND

13

T-

14

T+

15

F-

16

F+

C751

0.1

C

C735

0.1

C734

10V220

33

29

GND

22 23 24

NC

208199181017

D4-

D3-

D3+

D4+

21

NC

PVCC2

PGND2

VCC

VREF

25 26

IN4

27 28161315

NC

IN3

RSTIN

IC703

D1+

NC

D1-

1112

35

30

IN1NCPC2NCIN2

NC

7 12

R735

D2+

D2-

14

36

C737

0.1

GND

PGND1

PVCC1

M

M702

SP MOTOR

38

C736

0.1

37

M

M701

TRV MOTOR

IC703

AN8739SBTE2

FOCUS COIL/

TRACKING COIL/

TRAVERSE MOTOR/

SPINDLE MOTOR DRIVE

/RST

3456

R725

390

100

R724

C715

18K

2700P

R715

1K

R736

100

R727

3.9K

C752

1000P

R723

6.8K

C738

0.01

R729

3.9K R749

4.7K

C739

1500P

R728

3.9K

R731

6.8K

SCHEMATIC DIAGRAM - 2

: +B SIGNAL LINE : CD SIGNAL LINE

CD SERVO CIRCUIT

: CD-DA SIGNAL LINE

R721

100

C731

6.3V220 C730

0.1

R717

1K

R718

1K

C725

1000P

C726

1000P

C727 50V1

C728 50V1

20

18

19

23

22

21

C723

10V220

C724

0.1

X701

RSXZ16M9M01T

C722

10P

C717

0.1

R711

82K

C716 820P

C744

5600P

R709

47K

R714

C721

10P

C718

0.22

C754 470P

26

24

25

27

72

69

71

70

RESY

/TEST

IOSEL

IC702

DIGITAL FILTER/

FBAL

TBAL

FETERFENV

32

29

30

31

73

AVDD1

VREF

28

74

OUTL

FOD

27

AVSS1

TRD

75

26

OUTR

KICK

62

63

61

FCLK

BYTCK

40

LDON

39

/CLDCK

/RFDET

BDO

38

60

VDD

59

X2 OUT

58

X1 IN VSS

0

R712

220

R741

47K

R742

220K

57

SBCK

56

SUBC

55

VCOF2

54

PCK

53

EFM

52

AVSS2

51

AVDD2

50

VCOF

49

PLLF

48

DSLF

47

DRF

46

IREF

45

ARF

44

WVEL

43 42

DSLF2 PLLF2

41

42

68

66

64

65

67

CRC

CLVS

FLAG

IPFLAG

DEMPH

MN662790RSC

SERVO PROCESSOR

DIGITAL SIGNAL PROCESSOR/

D/A CONVERTER

VDET

OFT

TRCRS

33

34

36

35

37

80

78

79

76

77

SSEL

RSEL

MSEL

PSEL

IOVDD

TVD

PC

ECM

ECS

TRV

22

21

25

24

23

C732

6.3V220

BCLK LRCK

SRDATA

DVDD1 DVSS1

MCLK

MDATA

MLD

SENSE /FLOCK /TLOCK

BLKCK

SQCK SUBQ

DMUTE

STAT /RST

SMCK

CSEL

C733

0.1

17

1 2 3 4 5 6

TX

7 8 9

10

11

12

13 14 15 16 17 18 19 20

C745

1000P

C753

470P

C743

0.1

8

6

7

4

11 10 9

R753

100

2

5

LCH OUT

A.GND

RCH OUT

+3.3V

D.GND

LD SW

+7.5V

P.GND

MCLK

MDATA

SPEED

12

BLKCK

SQCK SUBQ

RESET

MLD

STAT

/RST

SW

TX

3

19 18 17 16 15 14 13 12

11

10

9 8 7 6 5 4 3 2 1

CN702

TO MAIN CIRCUIT (CN310) ON SCHEMATIC DIAGRAM-5

TJ702

S701

RESET SW

15

16

1

FM EXT

ANT

75 OHM

GND

AM LOOP ANT

AM EXT

JK101

ANT

SCHEMATIC DIAGRAM - 3

: +B SIGNAL LINE : FM/AM SIGNAL LINE

TUNER/MAIN CIRCUIT

TUNER PACK Z120 (ENV17290G1Y)

22P

15P

1

2

3

4

C110

D101

0.01

R152

47uH

3

4

5

AM ANT COIL

2

1

Z101

RLA2Z007-T

R110

1K

C107

100P

C132

B0BC5R00009

R114

5.6K

C133

27P

X103

0

C134

27P

100K

C136

1000P

0.047

C130

RSXC7M20S05T

8P

1P

HVM27

18P

LA1833NMNTLM

6.3V100

100K

8P

33K

0.022

C114

C109

1000P

50V3.3

IC101

FM/AM IF AMP

DET/AM OSC MIX/

FM MPX

3

AM OSC COIL

8

7

9

R112

100K

C125

16V22

C112

0.01

VSS

XOUT

PLL FREQUENCY SYNTHESIZER

CEDICL

XIN

1 2 3 4

R138

3.3K

R130

10K

1K

R137

CE

1K

R136

PLLDA

50V4.7

AOUT

G

8P

C108

10K

R113

C111

560

R115

17181920

LC72131MDTRM

22

D

2SK238

S

R111

390

AIN

R116

7P

0.022

2.7K

HVM27

47P

4 5 6

82

R151

1K

C113

PD

VDD

FMIN

IC102

LW

AM

DO

51661571481391210

470

1K

R134

R135

DO/ST

PLLCLK

100

3P

1000P

AMIN

SDC

: FM SIGNAL LINE : FM OSC SIGNAL LINE

HVM27

33K

8P

G

100K

R119

R118

12K

3.3K

C127

G2BAE0000003

R117

68K

11

IFIN

MONO

STRQ

FM

D

S

16V22

2

1

4P

Z102

330

2SK360

C126

4P

1P

22P

10K

8P

33P

10K

OSC OUT

FM IF IN

1 2 3 4

16V1

3

5

R128

82

2SC2620

1uH

220P

1.5M

220

0.022

2SC2996

2P

18P

1.2K

Q110

2SC3311ARTA

DC DETECT SWITCH

47K

R120

2324

2122

AFC

OSC

AM RF IN

AM MIX OUT

REG

AM IF IN

0.01

C106

4

6

C129

R129

27K

C124

100P

: AM SIGNAL LINE : AM OSC SIGNAL LINE

2SC2058SPTA

IFT

10K

100uF 16V

6.3V100

150

0.022

330

15P

470K

2SC2996

R121

22K

C119 560P

C115

50V4.7

C131

C139

50V4.7

22K

R143

4.7K

R102

C116

0.033

AGC

AM OUT

PILOT IN

DET OUT

ST

GND

SD

5206197188179

C147

1000P

C148

0.01

1K

R126

FM DET

33

R124

470

R125

SD

DO/ST

Q101,Q102

FM IF AMP

CF201

J0B1075A0086

1

7

2

6

0.01

C102

C101

8

R139

22K

C120

16V10

0.01

C138

100P

68K

R123

16101511141213

MPX IN

PILOT OUT

VCC

STRQ

R122

X102

470

R127

RLFDFT22DD

0.1

C149

10K

R132

3

C104

1000P

470

R105

R103

16V100

KRA102MTA

22K

R140

C137

3300P

0.01

C118

RCH

IC101

FM/AM

C122

2.7K

C103

0.01

C105

R106

1000P

470K

Q101

100

Q106

TUNER 15V

SUPPLY SWITCH

Q106

Q110

R142

0.01

C117

6.8K

C142

R141

50V1

6.8K

C141 50V1

R145 100K

C143

LCH

MONO

50V1

C121

50V0.47

R144

120

R131

120

1K

R133

DET_OUT

PLLCLK

330

R107

R108 470K

Q102

CF202

J0B10750077

1

2

100K

R146

C144

4700

50V1

C123

15V

DO/ST

SD

+7.5V

TGND

RCH

CE

LCH PLLDA DO/ST

3

4700

TO MAIN CIRCUIT (2A) ON SCHEMATIC DIAGRAM-6

1A

TO MAIN CIRCUIT (2B) ON SCHEMATIC DIAGRAM-6

1B

R109

R104

330

10K

TO DECK CIRCUIT (CN1001) ON SCHEMATIC DIAGRAM-11

AUX

TO CD LOADING CIRCUIT (CN1) ON SCHEMATIC DIAGRAM-13

SCHEMATIC DIAGRAM - 4

: +B SIGNAL LINE : -B SIGNAL LINE

MAIN CIRCUIT

CR02

1

MOTOR

2

BP1

3

DECK1_H

4

DMT

5

CN304

RCH

LCH

JK300

CN309

MOGND

6

MOT10V

7

REC_H

8

+15V

9

RECR

10

RECL

11

AGND

12

PBR

13

PBL

14

CHG_CW

14

CHG_HALF

13

8V

12

CHG_CCW

11

CLAMP

10

OPEN

9

SW1

8

PGND

7

SW2

6

DGND

5

5V

4

POSITION

3

BOTTOMSW

2

PLUNGER

1

C331

0.22

C332

C326

0.47

RL1N4003S-P

C253

1000P

R201

10K

L301

J0JBC0000019

680

C201

680

C401

R401

10K

0.22

22K

R344

12K

R345

220

R348 R346

22K 12K

R347

D324

Q324

KTA12710YTA

CD MOTOR SUPPLY SWITCH

Q324

100P

C202

R202

100P

C402

R402

47K

10K

R341

R340

R342

Q323

1K

R349

10K

R350

KRC102STA

PLUNGER MOTOR

SUPPLY CONTROL SWITCH

: CD SIGNAL LINE

3.3K

47K

10K

R343

CHG_PLGR

Q323

MOT10V

REC_H

+15V

REC_R

REC_L

PBR

PBL

AUXR

AUXL

VREF+

CHG_CW

CHG_HALF

CD8V

CHG_CCW

CHG_AD1 CHG_AD2

SW1

SW2

SW5V

MOT10V

+9.0V

-9.0V

LO_L

LO_R

HI_L

HI_R

D307-D308

MA2J72800L

: MAIN SIGNAL LINE: AUX SIGNAL LINE : PLAYBACK SIGNAL LINE : RECORD SIGNAL LINE

R352

220

C318

16V33

+9.0V

-9.0V

R443

3.3K

R243

3.3K

R444

1.8K

R244

1.8K

Q308

D307

D308

R317

CD3.3V

17 16 15 14 13 12 11 10

BP1

MOTOR

PL_GND

C451

Q411

0.033

220k

R472

R473

220

12K

R471

Q404

R439

4.7K

C435

50V0.68

Q204

R239

4.7K

C235

50V0.68

Q405

R442

5.6K

C434 50V1

Q205

R242

5.6K

C234 50V1

0.01

10K

C316

R313

R315

2.2K

Q309

C315

330

10V33

R316

3.9K

TO PANEL CIRCUIT (CP601) ON SCHEMATIC DIAGRAM-9

DMT

DECK1_H

RDS_DET

DET_OUT

R353

220

Q211

R271

12K

R437

18K

C430 8200

R438 220K

C431

1500P

R237

18K

C230 8200

R238 220K

C231

1500P

C433

8200P

R440

4.7K

KTC3875GRTA

12K

R441

C233

8200P R240

4.7K

12K

R241

R312

R311

12

15

100

R314

Q310

SW5V

MIC

+9V

SPEANA

MIC GND

SPEA

MIC

+9V

C319

16V33

220K

R272

R436

18K

Q204, Q404

KTC3875GRTA

LPF FREQ AMP

SWITCH

R236

18K

C432

8200P

Q205, Q405

HPF FREQ AMP

SWITCH

C232

8200P

RL1N4003S-P

/CD

C251

0.033

R273 220K

D309

REC_H

HPL

HPR

HPGND

C452

0.033

C252

0.033

KTC3875GRTA

CD8V

CN303

24689 7 5 3 1

/CD

MUTE_A

MUTE_H

/CD

MUTE_A

MUTE_H

R474

1.5K

LHPF

R274

1.5K

RHPF

Q211

RHP FILTER

(HEADPHONE)

Q411

LHP FILTER

(HEADPHONE)

R454

220

Q308

KTA12710YTA

CURRENT CONTROL

SWITCH

Q309

KTC3199GRTA

VOLTAGE STABILISER

CD3.3V

Q310

KRA110MTA

CD ON/OFF

SUPPLY SWITCH