SA SA AK22 Service Manual

ABCDEFG

1

TACT SWITCH (1) P.C.B.

P

(REPX0231G)

TACT SWITCH (2) P.C.B.

D

(REPX0231G)

2

3

4

5

6

S945

SSEQ

R944

D949

R945

CD

TAPE

R949

R943

S943

S942

R942

S941

TUNER

S913

S912

R911

R912

R900

R919

TUNE UP

R913

MEMORY

S911

TUNE MODE

C900

REC/STOP

REV MODE

S906

R906

S907

C919

1

2

3

VR900

CP900

12

11

10

987654321

R918

R917

R916

R903

D918

D917

D916

D915

S905

S903S904

CD5

R905

CD4

R904

CD3 CD2

R907

S940

7

AUX

R940

R941

8

9

J956

123456789

C941

H940B/W940

C940

321

REMOTE CTRL

Z940

S909

FM MODE / BP

R910

TUNE DOWN

R909

S910

TAPE EDIT

S908

R908

S901S902

CD MANAGER

R902

R901

R915

D914

CD1

R914

S900

ABCDEFG

1

2

3

4

AC TRANSFORMER P.C.B. (REPX0256F)

M

CAUTION

RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT

TOUCH THIS P.C.B

T501 (POWER TRANSFORMER)

B C

Q570

E R588

R581

C574

56

C573

R580

R583

R582

Q572

EB

C

1234

CN502

D572

D574

R589

D576

R590

R584

J506

C575

D570

C572

C576

D575

RL502

D571

1

2

W1B

B C E

Q571

CN501

YEL

W2B

BLK

R586

J507

123456

1 2

W500B

3

4

3

D573

J585

D577

C570

78

PRIMARY

SECONDARY

5

SUB-TRANSFORMER P.C.B. (REPX0256F)

N

CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS P.C.B

6

AC IN

220V 50/60HZ

7

JK500

J575 J576

J577

J578

8

T1.6A

9

F1 250V

501 Z

1 FC

2 FC

L500

BLK

W2A

YEL

W1A

PRIMARY SECONDARY

T502

(POWER TRANSFORMER)

500 W

1 2

3

SCHEMATIC DIAGRAM -1

: +B SIGNAL LINE : +B SIGNAL LINE

CD SERVO CIRCUIT

: CD SIGNAL LINE

OPTICAL PICKUP CIRCUIT

LASER DIODE

6 8

11

C

12 10

5 4

9

2 3

C

NBOUT

1

8

GND

2

VCC

NAOUT

3

BIN

VREF

4

AIN

C

7

6

5

C

1

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

CN701

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16

VCC PDF PDE LD LD GND GND NB GND NA VREF LPD GND

TT+ FF+

Q701

R750

4.7

3.2V

0.9V

((2V))

C713

C750

0.1

C751

0.1

R701

4.7

6.3V33

2.7V ((2.3V))

C701

Q701

2SA1037AKSTX

LASER POWER DRIVE

29

30

C703

6.3V100

C704

0.1

0.1 2700P

C707

C714

6.3V100

C702

C706

0.027

0.1

IC701

AN8885SBE1

SERVO AMP

C712

0.1

C711

0.1

R708

22K

1.6V

0V((0.2V))

3.2V

2.7V((2.3V))

1

1.6V

3

2

4

876

5

LD

LPD

PDB

PDF

PDA

VCC

PDE

IC701

TEN

TEOUT

FEOUT

TBAL

FEN

VREF

FBAL

24

23 2228

25

26

27

1.6V

C747 180P

R744 120K

C749

2200P

R707

39K

21

1.6V

C710 120P

R702

R705

10K

150K

C742

0.027

R704

R706

1K

0.9V((1.4V)) 9

RF

RFIN

NC

20

1K

0V

0.7V

0V((3.1V))

1.6V

1.9V 14

1312

10

11

CEA

BDO

GND

LDON

CSBRT

NC

ENV

OFTR

PDOWN

/RFDET

17

15

19

16

18

0V

1.6V

0V((3.2V))

33

C735

0.1

C734

10V220

14 13 12 11 10

36

38

3.3V((3V))

3.3V((3.5V))

D4-

D3-

D3+

D2+

D2-

D1+

3.3V

3.3V((3.5V))

3.7V((3.5V))

C737

0.1 M

M702

SP MOTOR

C736

0.1

M

M701

TRV MOTOR

7.3V

3.3V

1915 16 17 18

NC

D4+

NC

D1-

3.7V((4.1V))

9 8

PGND2

PGND1

35

37

2120

7.3V

PVCC2

IC703

PVCC1

IC703

AN8739SBE2

FOCUS COIL/

TRACKING COIL/

TRAVERSE MOTOR/

SPINDLE MOTOR DRIVE

22 28272625

23 24

29

GND

NC

VCC

VREF

GND

IN1NCPC2NCIN2

NC

7 6 5 4 3 2 1

30

1.6V

R735

100

1.6V

7.3V

IN4

3.2V((0V))

28

1.6V

NC

IN3

RSTIN

1.6V

R724

18K

1.6V

R725

R715

/RST

390

C715 2700P

1K

R727

3.9K

R736

100

C752

1000P

R723

6.8K

R749

4.7K

C738

0.01

R729

3.9K

R731

6.8K

C739

1500P

R728

3.9K

SCHEMATIC DIAGRAM - 2

X701

RSXZ16M9M01T

C722

10P

R711

82K

C716 820P

CD SERVO CIRCUIT

C723

10V220

C724

0.1

R714

0

C721

10P

R712

C718

C744

C717

0.1

5600P

R709

47K

0.22

220

R741

R742 220K

47K

: +B SIGNAL LINE : +B SIGNAL LINE

R721 100

C731

6.3V220 C730

C754

470P

61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

FCLK

CLVS

60

VDD

3.2V

59

X2

OUT

1.5V

58

IN

X1

1.5V

57

VSS

56

SBCK

55

SUBC

54

VCOF2

53

PCK

52

EFM

51

AVSS2

50

AVDD2

3.2V

49

VCOF

48

PLLF

0.5V DSLF

47

1.6V

46

DRF

1.6V

45

IREF

1V

44

ARF

1.6V

43

WVEL DSLF2

42

1.5V PLLF2

41

40

FLAG

BYTCK

IPFLAG

/CLDCK

DIGITAL SIGNAL PROCESSOR/

VDET

OFT

TRCRS

/RFDET

BDO

LDON

39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21

0V

0V((3.2V))

0.1

3.2V

2.9V

3.2V

CRC

RESY

/TEST

IOSEL

AVDD1

DEMPH

IC702

MN662790RSC

SERVO PROCESSOR

DIGITAL FILTER/ D/A CONVERTER

VREF

FBAL

TBAL

FETERFENV

1.6V

FOD

1.5V

OUTL

1.6V

TRD

AVSS1

: CD SIGNAL LINE

20

18

19

23

R717

1K

R718

1K

C733

C732

0.1

6.3V220

3.2V

2.9V

1.5V

RSEL

OUTR

ECS

KICK

1.6V

3.2V

80

SSEL

PSEL

MSEL

1.6V

PC

3.2V((0V))

SRDATA

DVDD1 DVSS1

MDATA

SENSE /FLOCK /TLOCK

BLKCK

SUBQ

DMUTE

SMCK

TVD

1.6V

BCLK LRCK

MCLK

MLD

SQCK

STAT /RST

CSEL

TRV

TX

1 2 3 4

3.2V

5 6

1.6V

7

3.2V

8

0.5V

9

3.2V

10 11 12 13

0V

14

0V((0.2V))

15

3.2V((3.1V))

16 17

0V((3.1V))

18

3.1V

19 20

IOVDD

ECM

1.6V

C725

1000P

C726

1000P

C745

1000P

C727

50V1

C728 50V1

11 10

22

21

CN702

Lch OUT

19

A.GND

18

Rch OUT

17

C753 470P

C743

0.1

8

6

7

4

R753

10

3

+3.3V D.GND LD SW

+7.5V

P.GND

MCLK

MDATA

MLD SPEED BLKCK

SQCK

SUBQ

STAT

/RST

REST SW

17 16 15 14

TX

13

TO

12

PANEL

11

CIRCUIT

10

(CP606) ON

9

SCHEMATIC

8

DIAGRAM-8

7 6 5 4 3 2 1

9

TJ702

S701

RESET SW

16

1

15

SCHEMATIC DIAGRAM - 3

MAIN/TUNER CIRCUIT

TUNER PACK Z120 (EN17290G1Y)

FM EXT ANT

75 GND

AM LOOP ANT

AM EXT

ANT

JK101

22P

1

2

15P

1

2

0.47uH

3

4

5

L101

L101-L102

RLQBR39KTD-D

L102

AM ANT COIL

2

1

Z101

RLA2Z007-T

R110

1K

R114

5.6K

C110

0.01

R152

0

PLL FREQUENCY SYNTHESIZER

HVM27

33K

18P

100K

47P

C107

0.047

LC72131MDTRM

22

D

8P

G

1P

S

100K

0.022

2.7K 3P

HVM27

3

AM OSC COIL

8

7

9

C108

R112

8P

100K

IC101

LA1833NMNTLM

FM/AM IF AMP

DET/AM OSC MIX/

FM MPX

D101 UDZSTE175R1B

C112

0.01 C133

27P

C134

27P

R138

3.3K R130

10K

IC102

7P

HVM27

0.022

8P

G

100K

C136

1000P

4 5 6

16V22

C132

1000P

6.3V100

<2.59V>

20

XOUT

X103

RSXC7M20S05T

XIN

1

<2.6V>

R137

1K

: +B SIGNAL LINE

4P

1P

22P

33K

HVM27

330

D

8P

S

C114

50V3.3

3.3K

R118

C109

1000P

C127

16V22

0.1

C126

C125

R113

10K

C130

C111

50V4.7

<5.64V>

(1.84V)

((12.33V))

(2.6V)

((2.6V))

2.6V

<0V>

(0V)

((0V))

0V

1819

17

VSS

AOUT

DI

CE

2

<0.02V>

(0.02V)

((0.23V))

<0.55V>

(0.55V)

((0.77V))

0.55V

(2.61V)

((2.61V))

2.62V

R136

CE

PLLDA

Q106

KRA102MTA

POWER SUPPLY CONTROL

(FM : ON)

10K

1uH

220P

16V

100uF

150

220

0.022

10K

470K

33P

2P

18P

10K

1.2K

<4.68V>

24

OSC OUT

12K

R119

FM IF IN

1

<2.08V>

2

1

Z102

RLI2Z021M-T

R111

390

R115

560

R116

1K

12.26V

<0.81V>

(0.9V)

((0V))

0V

<0.81V>

(0.9V)

((0V))

0V

<2.58V>

<1.15V>

(5.16V)

((5.16V))

5.17V

14

16

15

PD

AIN

VDD

FMIN

IC102

DO

1K

CL

0.02V

<0.02V>

(0.02V)

R135

PLLCK

534

((4.75V))

0.02V

1K

<5.15V>

R134

470

DO/ST

(5.16V)

6

((5.03V))

5.16V

AM

<5.01V>

(0.18V)

7

((5.19V))

5.19V

SWA

: FM SIGNAL LINE : FM OSC SIGNAL LINE

2SC2058SPTA

CF201

RLFFETNGD01L

IFT

330

15P

(5.01V)

((4.85V))

(2.07V)

((2.09V))

R151

(0V)

23

2

82

((0V))

13

7

C102

0.022

16V100

6

8

<6.11V>

(6.42V)

((6.27V))

6.27V

4.85V

22

OSC

AM MIX OUT

6.28V

2.09V <6.1V>

(6.42V)

((6.27V))

C113

1000P

<0V>

(2.49V)

((2.59V))

0V

12

AMIN

SWB

9

8

<4.66V>

(4.98V)

((4.83V))

<2.42V>

(2.06V)

((2.46V))

AFC

REG

(2.07V)

<2.08V>

((2.07V))

3

5 6

R129

<0V>

(0V)

((0V))

2.59V

MONO

STRQ

4.83V

<0.02V>

(0.02V)

((4.43V))

R133

R117

1

<2.42V>

2.46V

21

AM RF IN

2.08V <2.06V>

C106

0.01

27K

<0V>

0V

11

IFINFM

10

4.43V

<0.05V>

1K

68K

(2.06V)

C124

(0V)

(12.3V)

FM IF AMP

2

C101

0.01

R139

50V4.7

C115

<0.16V>

((2.46V))

2.46V

20

AGC

GND

534

<0V>

2.07V

((2.08V))

100P

((0V))

0V

((12.31V))

12.25V

Q101

1000P

3

22K

R120 47K

(0.75V)

((0.25V))

0.25V

<2.02V>

AM OUT

IC101

SD

6

0V

(0V)

((0V))

<5.15V>

4

R132

10K

C104

R105

470

C119

(1.25V)

(5.14V)

0.01

C148

C116

C103

0.01

R103

100

560P

0.033

((2.02V))

1.86V

1819

7

5.12V

((4.22V))

R126

1K

Q101

R121

22K

C139

50V4.7

<2.39V>

DET OUT

ST

<5.15V>

1000P

C147

2SC2058SPTA

R107

330

R106 470K

0V (0V) <11.5V>

0V (0V)

0V

<0.7V>

(0V) <0V>

C120 16V10 C138

R143

0.01

22K

100P

C131

R102

4.7K

<2.06V>

(2.06V)

((2.07V))

2.07V

<2.07V>

(1.56V)

((2.36V))

2.36V

16

17

MPX IN

PILOT IN

FM DET

VCC

9

8

4.12V

((5V))

5.16V

<6.1V>

(5.15V)

(5.16V)

<3.97V>

((4.13V))

R124 33

X102

RLFDFT22DD

R125

470

DO/ST

SD

: AM SIGNAL LINE

: AM OSC SIGNAL LINE : FM/AM SIGNAL LINE

Q102

FM IF AMP

R109

330

R123

(2.07V)

((2.08V))

(6.43V)

0V (0V) <0.7V>

Q110

C137

68K

2.08V

<2V>

15

PILOT OUT

STRQ

10 11

6.27V <0.02V>

((6.17V))

R127 470

R108 470K

(2.01V)

(0.02V)

0V (0V) <0.7V>

3300P

((2.02V))

2.02V

14

3.68V

((3.68V))

50V1

0V (0V) <0V>

<1.7V>

RCH

FM/AM

<5.01V>

C122

R122

2.7K

C129

6.3V100

RLFFETMGD01L

0V (0V) <11.5V>

Q102

0V(0V)<11.5V>

0V (0V) <0V>

R140

22K

C117

0.01

C142

0.01

C118

50V1

C141 50V1

<1.69V>

(1.76V)

(1.75V)

((1.76V))

1.76V

13

LCH

MONO

12

5.19V (4.55V)

(1.32V)

<3.66V>

((5.19V))

C121

R128

82

C105

1000P

Q106

0V

R104

(0V) <13.5V>

10K

CF202

1

13.6V (13.6V) <0V>

3

2

Q110

2SC3311ARTA

DC DETECT SWITCH

R146 100K

R142

C144

4700P

6.8K

R141

6.8K R145

100K

((1.78V))

1.77V

C143

4700P

3.72V

((3.76V))

C123

50V1

50V0.47

R131

68

C149

0.1

13.6V (13.6V) <13.6V>

TUNGND

15V

DO/ST

+7.5V

DET_OUT

RCH

CE

LCH

PLLDA

DO/ST

PLLCK

SD

1A

TO MAIN CIRCUIT (1B) ON SCHEMATIC DIAGRAM-4

2A

TO MAIN CIRCUIT (2B) ON SCHEMATIC DIAGRAM-4

SCHEMATIC DIAGRAM - 4

MAIN CIRCUIT

R401

10K

C401 680P

C201 680P

R201

10K

RCH CE LCH PLLDA

DO/ST

PLLCLK

TUN_GND 15V DO/ST

SD

7.5V +15V DET_OUT

PBL

10

PBR

9

AGND

8

RECL

7

RECR

6

15V

5

DGND

4

MO10V

3

MOGND

2

MECA.G

1

TO TUNER CIRCUIT (2A) ON SCHEMATIC DIAGRAM-3

TO TUNER CIRCUIT (1A) ON SCHEMATIC DIAGRAM-3

TO DECK CIRCUIT (H1001/W1001) ON SCHEMATIC DIAGRAM-10

AUX

LCH

RCH

JK305

2B

CN304

1B

C300

R303

10K

0.01

C402 100P

C202 100P

C301 1000P

R300

4.7K

R402

R202

3.9K

UDZSTE177R5B

R304

R305

47

: +B SIGNAL LINE

AUX1_L

AUX1_R

PLLCE1

D318

ST_DO

SD

47

R213

56K

R215

1K

: MAIN SIGNAL LINE : CD SIGNAL LINE

TO PANEL CIRCUIT (CP605) ON SCHEMATIC DIAGRAM-8

CN303

19

20

SPC

C235

50V2.2

R210

1K

R209

47K

R410

1K

R409

47K

302

R207

1.5K

C204

R208

10K

220P

301

R407

1.5K

R408

C404

10K

220P

R413 56K

R415

1K

SPB

50V2.2

C435

50V2.2

C436

18

17

SPA

CHG_PLGR

C407 16V10

50V2.2

C236

16

CHG_HALF

C234

50V4.7

C303 16V10

R302 100K

C207 16V10

C308

C304

0.047

C305 4700P

C306

50V0.33

15

DC_DET2

C434

R301 100K

0.1

C310

0.047 R414

10K

R214

10K

141312

PLLDA

DC_DET1

50V4.7

C239 100P

C307

50V0.33

: FM/AM SIGNAL LINE

: RECORD SIGNAL LINE

10

11

/CD

VREF+

PLLCLK

PLLCE1

C439 100P

<0V>(0V)

((0V))0V

<3.99V>(4.0V) ((3.99V))3.99V

<4.57V>(4.57V)

((4.57V))4.57V

<4.57V>(4.57V)

((4.57V))4.57V

<4.54V>(4.54V)

((4.54V))4.54V

<0V>(0V)

((0V))0V

<4.53V>(4.53V)

((4.53V))4.53V

<4.53V>(4.53V)

((4.53V))4.53V

<4.54V>(4.54V)

((4.54V))4.54V

<4.53V>(4.53V)

((4.53V))4.53V

<4.54V>(4.54V)

((4.54V))4.54V

<0V>(0V)

((0V))0V

<4.52V>(4.52V)

((4.52V))4.52V

<4.53V>(4.53V)

((4.53V))4.53V

<4.53V>(4.53V)

((4.53V))4.53V

<4.53V>(4.53V)

((4.53V))4.53V

50V0.33

CD3.3V

CDDGND

<4.51V>(4.52V)

((4.51V))4.52V

<4.51V>(4.51V)

<4.52V>(4.52V)

((4.52V))4.52V

46

47

INLD

INRC

F2L1

F1R2

F1R1

((4.52V))4.52V

<4.51V>(4.52V)

<4.52V>(4.52V)

C312

50V0.33

0.15

C379

C313

0.15

24689 7 5 3 1

CDL

CDR

A.GND

R211

R212

2.2K

4.7K R412

4.7K

50V2.2

C433

C233

((4.50V))4.52V

<4.51V>(4.51V)

((4.50V))4.52V

<4.51V>(4.51V)

((4.50V))4.52V

<4.51V>(4.51V)

((4.50V))4.52V

<4.51V>(4.51V)

((4.50V))4.52V

43

45

42

44

INLC

F2L2

((4.52V))4.52V

INLA

INRA

INLB

INRB

BH3874AKS2

AUDIO SOUND PROCESSOR

F2R2

F2R1

F3L2

F3L1

((4.52V))4.52V

<4.52V>(4.52V)

C323

C322

0.027

0.15

C381

C316

C314

0.15

C315

0.15

C378

C380

2.2K

SPEANA

R411

10K

R367

<4.52V>(4.55V)

<4.51V>(4.51V)

((4.51V))4.50V

<4.55V>(4.51V)

((4.51V))4.50V

BPMF

BPOUT

IC301

F3R2

F3R1

98765432641

((4.52V))4.52V

<4.52V>(4.52V)

C333

0.027 C324

0.027

SPC

((4.5V))4.55V

38394041

1110

((4.52V))4.52V

0.027

TX

PGND

CD7.5V

48 34

INRD

49

ALCC

50

ALCR

51

RECL

52

RECR

53

VFC1

54

GND

55

VFC2

56

MIC

57

DPLL1

58

DPLL2

59

DPLR1

60

DPLR2

61

PS1

62

PS2

63

F1L1 F1L2

C311

28

27 26

HPL

HP_SW

SPB

SPA

<2.2V>(2.2V)

((2.19V))2.91V

<2.2V>(2.2V)

((2.19V))2.43V

<2.2V>(2.2V)

37

36

ABC

F4R1

F4L1

F4L2

12

((4.52V))4.52V

((4.52V4)).52V

<4.52V>(4.52V)

C335

5600P

C336

C334 5600P

5600P

25

HPR

HP_GND

ASP_CLK

C357

4.7K

R371

<0.01V>(0.01V)

<0.64V>(0.64V)

((0.64V))0.64V

((2.19V))2.49V

35

SI

SCK

F5L

F4R2

151413

((4.52V))4.52V

<4.52V>(4.52V)

C340

5600P

C341

1500P

16V10

((0.01V))0.01V

((4.52V))4.52V

C383

0.01

SCHEMATIC DIAGRAM - 5

MAIN CIRCUIT

24 232221

DGND

C364 100P

SW5V

R379

4.7K

C348

0.068 C346

0.068

C345

0.068

C343

0.068

C353

0.1

C363 100P

C356

0.22

R375

82K

R374

C231

16V10

C347

0.068

82K

C344

0.068

R372

10K

ASP_LATCH

FILTER

BASS5 BASS4 BASS3 BASS2 BASS1 HPFR3 HPFR2 HPFR1 HPFL3 HPFL2

HPFL1

ASP_DATA

R373

15K

<0.07V>(0.07V) ((0.07V))0.07V

33

32

OUTL

STEPC

31

OUTR

VCC

30 29

CAP

28 27 26 25 24 23 22 21 20 19

18 17

F5R

16

<4.52V>(4.52V)

((4.52V))4.52V

C342

1500P

<4.53V>(4.53V) ((4.53V))4.53V <4.53V>(4.53V)

((4.53V))4.53V <9.05V>(9.04V) ((9.04V))9.04V <4.52V>(4.52V) ((4.50V))4.51V

<4.52V>(4.52V)

((4.52V))4.52V

<4.53V>(4.52V)

((4.53V))4.53V

<4.5V>(4.49V)

((4.49V))4.49V

<4.53V>(4.51V)

((4.54V))4.54V

<4.51V>(4.52V)

((4.51V))4.51V

<4.52V>(4.53V)

((4.52V))4.52V

<4.52V>(4.53V)

((4.52V))4.52V

<4.51V>(4.51V)

((4.50V))4.51V

<4.52V>(4.52V)

((4.52V))4.52V

<4.52V>(4.53V)

((4.52V))4.53V

<4.52V>(4.51V)

((4.52V))4.51V

<4.52V>(4.52V)

((4.52V))4.52V

NAS_A

PCONT

MUTEA

+9V

R392

47

R391

47

D317

UDZSTE179R1B

C431

16V10

C355 16V10

R385

47K

R384 390K

R381

82K

R382

390K

R378

82K

20 191817 16

+9V

LED9V

NAS_B

+15V

C354

10V220

: +B SIGNAL LINE

TO PANEL CIRCUIT (CP607) ON SCHEMATIC DIAGRAM-8

R227

6.8K

14 13

15

SW1

SW2

-VP

+15V

12

DET_OUT

R222

4.7K

C226

0.056

C426

0.056 R422

4.7K

R427

6.8K

11

ASP_DATA

10

ASP_CLK

C318

C320

0.01

R223

0.01

R423

9 7

8

SW5V

ASP_LATCH

470

R380

-15V

47K

CHG_AD1

C428 16V10

C227

680P

C427

CHG_AD2

C228

16V10

680P

: -B SIGNAL LINE

2

46

3

5

ST_DO

SPEANA

CHG_CW

CHG_CCW

R225

R224

1.5K

15K

C229

C230

100P

47P

<-15V>(-15V)

((-15V))-15V

<0V>(0V)

((0V))0V

34 2 1

IC302

5 6 7 8

((0V))0V

<0V>(0V)

C429

C430

100P

47P

R425

R424

1.5K

15K

CN302

1

SD

C375

1000P

R450

120

<0V>(0V)

((0V))0V

R451

120 120

M5218AP

BUFFER AMP

((0V))0V

((15V))15V

<15V>(15V)

KTD1304TA

MUTING SWITCH

HIGH-CHANNEL RCH

KTD1304TA

MUTING SWITCH

HIGH-CHANNEL LCH

Q200

Q400

IC302

R449

120 C432

3300P

R448

HPL

R453

22K

C232 3300P

: MAIN SIGNAL LINE

HPR

R253

R249

R250

120 120

R251

120 120

C238

16V47

C237

1000P

C437

1000P

C438

16V47

R248

R220

33K

R420

33K

R433

Q450

R233

22K

Q200

Q400

(0V)<0V> 0V((0V))

Q250

[0V]

(-3.76V)<-3.76V>

-3.76V((-3.76V))[-3.76V]

(0V)<0V>0V ((0V))[0V]

(-3.76V)<-3.76V>

-3.76V((-3.76V))[-3.76V]

(0V)<0V>0V ((0V))[0V]

(0V)<0V> 0V((0V))[0V]

(0V)<0V>

0V((0V))[0V]

AUDIO MUTING CONTROL

C225

50V3.3

(-3.76V)<-3.76V>

-3.76V((-3.76V))[-3.76V]

(0V)<0V> 0V ((0V))[0V]

(-3.77V)<-3.77V>

-3.77V((-3.77V))[-3.77V]

R421

(0V)<0V>

1.5K

0V((0V))[0V]

C425

50V3.3

R329

47K

(-3.76V)<-3.76V>

-3.76V((-3.76V))

R328

C317

33K

50V4.7

Q306

KRA102STA

R221

1.5K

R226

470

R426

[-3.76V]

470

Q250

KTD1304TA

HP MUTING

SWITCH RCH

Q450

KTD1304TA

HP MUTING

SWITCH LCH

H_OUT_R

R308

0

H_OUT_L

Q306

MUTEA

(-0.39V)<-0.39V>

-0.39V((-0.4V)) [-0.39V]

(0V)<0V> 0V((0V)) [0V]

-9V

C374

1000P

VREF+

R358

47K

R359

47K

CN309

SW1

SW2

CHG_CW

CHG_HALF

14 13 12 11 10

R355

22K

CHG_CCW

R354

12K

CHG_AD1

R353

10K

CHG_HALF

C365

SW1

CLAMP

CHG_CCW

PGND

OPEN

8V

TO CD LOADING CIRCUIT (CN1) ON SCHEMATIC DIAGRAM-12

0.47

SW2

VREF+

DGND

R345

5V

SW5V

R346

22K

220

BOTTOMSW

POSITION

R347

24689 7 5 3 1

CHG_AD2

12K

PLUNGER

R351

10K

VREF+

SA SA AK22 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual