Technics SADV 280 Schematics

-

From POWER

TRANSFORMER

1

8

W501

2

3

4

5

6

7

9

12

13

14

15

16

17

18

A.GND

+B(10V)

SUR L

SUR R

19

11

10

CT.GND

SH FL1

DATA

D.GND

TUNER L/C

TUNER Rch

Lch IN

Rch IN

S.W

MIC

-B(-10V)

V.GND

CE/REQ

CLK

SH FL2

20

SYNC

+B5

Rch

-B3

To SOUND PROCESSOR

(SH-DV280)

BLOCK DIAGRAM

LC72 CE

LC72 DI/ST

LC72 CK

DATA1

CLK1

DATA IN

CE1

345

LC72 DO

2

C2BBFD000317

IC901

SYSTEM CONTROL / FL DRIVE

Rch

94

SH CS

97

SH CK

9596

SH DO

SH DI

SHSYNC

100

SD

21

SH REQ

19202122 23

AM

MIX

12

LEVEL

DET

FM IF

S-

CURVE

2

3

REG

4

13

AGC

COMP

68 1110

AM

RF

AMP

AM

IF

AM/FM

IF

BUFFER

24

1

FM

DET

AM

OSC

BUFEER

ALC

TUNING

DRIVE

18

BUFFER

AMP

FM ANT

RF AMP

FM

MIXER

FM OSC

9

Vcc

+B(FM)

FM IF

AMP

+B2

AM

IFT

1

20

7.2MHz

XIN

XOUT

PHASE DET

CHARGE PUMP

CE 2

3

DI

4

CL

D0 5

98710

BO4

BO3

IO1

15

VDD

16 PD

IFIN

11

BO2

1/2 14

13

FM IN

AM IN

Power

supply

(FM:ON)

+B2

+B1

+B(FM)

SD

STEREO

SWITCH

17

FM / AM I F AMP,

DET / AM OSC,

MIX / FM MPX

(LA1833MN)

15

PILOT

CANCEL

PHASE

DET

16

VCO

FFFF

PILOT

DET

FF

AM

DET

DECODER

BO1 6

IO2

12

19 Vss Power

ON

RESET

PLL FREQUENCY

SYNTHESIZER

(LC72131M)

+B2

GND

57

ST

MONO

FM/AM

SD

FMDET

FM IF

IN

AM

OSC

OUT

AFC

AM

OSC

AM RF

IN

AGC

AM

OUT

DET

OUT

PILOT

IN

MPX

IN

PILOT

OUT

Lch

14

Rch

17

18

AIN

AOUT

AM

ANT

COIL

AM

OSC

COIL

AM ANT

+B2

STRQ

AM IF

IN

AM

MIX

OUT

Rch

IFT

+B(FM)

FM:ON DET

CE1

DATA1

CLK1

DATA IN

SW CONT.

12

X0

X1

14

ABC

11 10 9

G

8

2

13

BU4053BCFE2

IC201

SIGNAL SELECTOR 1

15

Y1

Y0

VDD

16

+B4

VSS

7

-B3

6

ST/AV.

6CH

SD

Z101 TUNER UNIT (RAN0005EM-2)

REFERENCE

DIVIDER

SWALLOW COUNTER

1/6,1/17 4BIT

12 BIT

PROGRAMMABLE

DIVIDER

DATA SHIFT

REGISTER LATCH

UNIVERSAL

COUNTER

MUTING

Q605

MUTING

Q607

(Q608)

93

MUTE3

MUTING

CONT.

+B4

Q902

10

SEL/

TUNER

MIC DET

25

+B8

SA-DV280(EB,EG) BLOCK DIAGRAM

SPEAKERS

Rch PHONES

VR901

(VOLUME)

24 23

VR JOGA

VR JOGB

KEY

SWITCH

(S901~908,

910~915)

19 20

KEY TU

KEY

KARAOKE

Q901,

D904 RESET

12

RESET

+B8

90

VDD2

+B9

VDD1

VDD3

VDD4

18 46 72

C2BBFD000317

IC901

SYSTEM CONTROL / FL DRIVE

29

REMO-

CON

Z901

(REMOTE

SENSOR)

+B8

1~8G

30~37

P1~38

38~45,

47~50

52~71,

73~78

FL901 FL DISPLAY

D931,933

79

REGIN0

82

TIMER

83

S.W LED

D951

(DIGITAL

S.WOOFER)

81

STAND-BY

D954

( PLAY/REC) D306

()

1621

GND

1047

5

1

(2)

6

3

20

15

19

(18)

26

(25)

23

24

RSN311W64B

IC601

POWER AMP

+B3

D601

-B1

D602

-B2

Q601,602

9

+B7

13

POWER

98

E DET

HP SW

26

SASYNC

AC IN

88

POWER

11

+B8

1

CHECK

DET

28

RDS DATA

RDS CLK

27

14

N

Q503,D558

51

-VP

86

MUTE

D906

PRO-

TECTOR

D974

SWITCH-

ING

D907

REGIN1

22 8

11

(12)

16 17

X901

(6MHz)

XC IN

XC OUT

13 14

X902

(32.7kHz)

XIN

X OUT

80

MUTING

Q606

AC IN

POWER CONTROL

CIRCUIT

POWER CONTROL/

PROTECTION CIRCUIT

C1BB00000527

IC151

RDS SIGNAL DEMODULATOR

CLOCK

RECOVERY

(1187.5kHz)

DATA

CLK

IDR

RDS-ID

DETECT/

RAM

57kHz

BPF

(SCF)

PLL

(57kHz)

VREF

CINFLOUTVREF

VDDA/D

VssA/D

MPX IN

TEST

XOUTXIN

OSC/DIVIDER

CLK(4.332MHz)

89

7

2

4,10

3,11

+B2

156

14

15

16

X151

(4.33MHz)

REFERENCE

VOLTAGE

TEST

ANTIALIASING

FILTER SMOOTHING

FILTER

DATA

DECODER

MODE

12 13

RST

91

MUTE2

MUTING

CONT.

+B5

Q612

MUTING

Q609

(Q610)

SURROUND

(8 )

Ω

CENTER

(8 )

Ω

HF

(6 )

Ω

LF

(8 )

Ω

Q551,554,

555 SIGNAL

LEVEL DET.

-B3 +B4

M

FAN MOTOR

MOTOR

DRIVE

Q553,556,

557

15

Vss

89

Vss2

SA-DV280(EB,EG) BLOCK DIAGRAM

POWER TRANSFORMER

F1

AC IN

L701

T701

D702,704,

752,754,755

Q707

+B4

-B3

Q702,705

Z701

RL702

Q791

POWER

TRANSFORMER

T702

D741~744

-B1

-B2

Q703,704

+B7

D701,703,

751,753,761

Q701

+B1

Q723

+B2

Q711,712,725 D717~720

+B5

D705

-VP

FL1

FL2

FL DISPLAY

(FL901)

Q708,709

+B3

AC IN

SHSYNC

POWER

Q726

+B6

+B8

+B9

D902

D901

SASYNC

D746

REGULATOR

/STABILIZER

REGULATOR

SWITCH-

ING

REGULATOR

RELAY

DRIVE

+B6

D740

REGULATOR

/STABILIZER

SA-DV280(EB,EG) BLOCK DIAGRAM

NOTES : SIGNAL LINE

: FM SIGNAL

: AM SIGNAL

: FM OSC SIGNAL

: AM OSC SIGNAL

: AUDIO SIGNAL

( ) indicates pin No. Right channel.

123456789101112

13

A

B

C

D

E

F

G

H

SA-DV280(EB,EG) OPERATION, MAIN P.C.B.

Note: This printed circuit board diagram may be modified at any time with the development of new technology.

MAIN P.C.B.

B

10

9

8

7

6

5

4

3

2

1

D607

R635

R719

J

W902A

JJ

J

15

13

11

9

7

5

3

1

14

12

10

8

6

4

2

C664

C725

JJ

J

R230

C740

C733

C735

R764

R763

D737 B

C

E

Q723

W901A

W501

20

18

16

14

12

10

8

6

4

2

19

17

15

13

11

9

7

5

3

1

15

13

11

9

7

5

3

1

14

12

10

8

6

4

2

R694

R761

R696

R695

J

D657

D659

C705

D611

B

C

E

Q612

J

C737

C706

J

R776

R738

R739

R708

ECB Q708

ECB Q709

E

C

B

Q707

D721

C707

C708

C509

C510

C202

C714

C731

C741

D720

D719

D718

D705

D717

C715

C602

C656

C655

C554

C601

C555

C622

C660

C659

C371

C551

ECB

Q609

ECB

Q610

ECB

Q554

ECB

Q607 ECB

Q608

ECB

Q606

ECB

Q605

ECB

Q555

B

C

E

Q602

B

C

E

Q551

B

C

E

Q503

B

C

E

Q601

JJ

J

1234567891011

CP101

E602

R605

R606

R617

R618

R684

R683

R604R603

R686

R685

R601

R614

R602

J

JJ

J

R693

R692

R564

R229

R628

R688

R687

R512

R511

R509

R204

R203

R727

R211

R510

R563

R558

R607

R608

R560

R569

R598

R597

R570

R561

R591

R559

R557

D555

D552

D757

D658

D551

D756

C550

C647

C605

C606

C610

J

ECB

Q704

ECB

Q703

C721

R572

R544

R610

R619

R612

R691

R624

R620

R546

R547

R638

J

C604

C608

C603

C607

C649

C609

C650

C612

R627

C613

R555

C614

C723

C552

C648

C619

C611

C724

R621

R615

R631

R632

R552

R551

R609

R611

R637

R769

R721

R722

R648

R647

R767

R622

R556

R623

R797

R796

R729

R202

R205

J

C616

C617

C618

J

D558

J

D725

IC601

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

J

JJ

J

JJ

J

W721A

W722A

10

9

8

7

6

5

4

3

2

1

4

3

2

1

J

C709

C761

D755

D754

D761

D753

D702

D704

D752

D701

D751

D703

D601

D602

C704 C701

C703

C702

J

E601

L602

L601

L605

L606

C639

C637

C635 C636 C632

JK601

JK602

1234

CP602

5678

J

JJ

C626

C620

C630

C621

C631

C642

R651

R642

R652

R650

R649

R639

R641

R640

C627

C629

C628

C732

C641

C640

To SOUND PROCESSOR

LF

(8 )

Ω

HF

(6 )Ω

LF

(8 )

Ω

HF

(6 )Ω

CN781

N

Rch

Lch

SPEAKERS

D582

D581

D583

D553

D554

ECB

Q553

ECB

Q557

C559 R568

R566

R567

12

JK551

ECB

Q556

C201

15

8

910 1516

IC201

D201

1 2 3 4 5 6 8 910 1112

CP601

7

(REP3337E-M)

NN

C556

NN

OPERATION P.C.B.

A

VR901

(VOLUME)

C902

C928

C922

C920

R929

R988

R991

R975

R974

R934

R937

R930

R931

R918

R957

R919

R932

R956

R987

C915

D906

J

JJ

J

R995

R942

R941

R912

W902B

15

13

11

9

7

5

3

1

14

12

10

8

6

4

2

S913

D951

W901B

15

13

11

9

7

5

3

1

14

12

10

8

6

4

2

D902

D901

J

R926

R993

R958

R969

R959 R997

R996

R990

R936

R935

R999

R954

C921

C903

D973

R939

R960

R986

J

C926

C905

D933

D931

D905

J

L901

L902

J

C901

FL901

1

2

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

53

54

L153

J

R155

1510152025 30 35

404550

55

60

31

51

65

7570

80

81

85

90

95

100

IC901

R953

R951

R943

R961

R924

R925

R922

R921

J

R952

R976

R928

R950

R945

R962 R949

C912

C908

C907

C925

C909

C904

C911

C910

D907

J

3

2

1X901

J

X902

C914

C916

C918

B

C

E

Q901

R151

R152

R153

R154

L152

R158

C152

C153

C154

L151

J

C919

C151

C927

Z901

(SENSOR)

D151

C160

C155

C156

X151

IC151

158

910 16

15

C157

C159 R944

R946

C924

C917

D974

C158

S901

( / ) D306

( )

R901

J

S904

( PLAY/

REC)

R904

R157

R903

R902

S902

(CLOCK/

TIMER)

C923

JK903

(PHONES)

2

143

56

7

W905

C395

C396

JR906

R905

S907

(SET)

S906

(TUNING

MODE)

S905

(FM AUTO/

MONO)

S903

(—DEMO)

J

R910

R909

S908

(INPUT

SELECTOR

)

S910

(TUNING )

D904

R911

R994

R940

R907

S912

(TUNER/

BAND)

J

S911

(TUNING )

R914

R915

R916

R913

J

S915

(RDS

DISP MODE

PTY)

S914

(RDS

DISP MODE

PS) J

DIGITAL

S.WOOFER

D954

( PLAY/

REC)

3

2

1

2

3

E

C

B

Q902

D961

R966R965

(REP3337E-M)

N

C931

123456789101112

13

A

B

C

D

E

F

G

H

SA-DV280(EB,EG) AC IN, POWER TRANSFOMER(A)/(B), POWER SUPPLY P.C.B.

Note: This printed circuit board diagram may be modified at any time with the development of new technology.

POWER SUPPLY P.C.B.

C

B

C

E

Q701

B

C

E

Q702

B

C

E

Q711

B

C

E

Q712

B

C

E

Q725

ECB

Q705

R725

R723

C719

C717

C710

C720

W701B

D723

C718

C722

C734 R720

R724

R768

R749

R765

R753

R754

D758

D739

D738

J

D730

10

9

8

7

6

5

4

3

2

1

(REP3337E-M)

POWER TRANSFORMER

(A) P.C.B.

E

W722B

W721B

1

2

3

4

5

6

7

8

9

10

1

2

3

4

R793

CN710

CN709

CN708

CN707

CN706

CN705

CN704

CN703

CN702

CN701

FP792

R798

FP791

J

POWER TRANSFORMER

(B) P.C.B.

F

CN711

CN713

CN712

W1

W2

W3

J

T701(Power transformer)

(REP3337E-M) REP3338A-S . . . [EG]

REP3338B-S . . . [EB]

JK701 JK603

L701

FC1 FC2

F1 T2A

Z701

C791

RL702

1

2

43

1

2

3

4

CN601

5

6

7

8

9

10

11

12

1

2

3

4

CN602

5

6

7

8

T702(Power transformer)

R794

R773

R774

R795

R771

R772

R712

ECB

Q791

ECB

Q726

D500

D711

D746

D740

J

C754

C758

D745

C759

R777

D742

D743

D741

D744

J

C755

C753

C634

W1

W2/W3

D747

AC IN P.C.B.

D

AC IN

C644

C646

C651

C652

C624

C633

C625

C645

C643

R646

R645

R644

R643

L603

L604

C

SR

SL

230V 50Hz . . . [EG]

230-240V 50Hz . . . [EB]

REP3338A-S . . . [EG]

REP3338B-S . . . [EB]

CENTER/

SURROUND

SPEAKERS

A

B

C

D

E

F

G

H

123456789101112

SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-1

S904

(PLAY/ REC)

FL901 (A2BB00000084)

1

7

5

4

6

3

2

T

S

S908

(INPUT SELECTOR)

S907

(SET)

S906

(TUNING MODE)

S905

(FM AUTO/MONO)

JK903

PHONES

3.5mm STEREO

R997

150

R996

150

D973

MA4030MTA

C921

1000P

C922

35V33

C920

25V22

R922

10K

R921

10K

R944

2.2K

R912

4.7K R911

3.3K R910

2.2K R909

1.8K R916

1.5K R915

1.2K R914

1K R913

820

R907

3.3K R906

2.2K R905

1.8K R904

1.5K R903

1.2K R902

1K R901

820

FL DISPLAY

1 6 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 53 542 5 7 9

W905

S901

(/)

C928

25V22

NOTE:

The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"

indicates the schematic diagram serial number located on the left corner in the schematic diagram.

AOPERATION CIRCUIT

C919

25V22

C927

25V22

C396

0.047

C923

0.1

C395

0.047

D974

MA165TA

C907

470P

C924

0.1

C904

0.01

R924

1K

C908

470P

R925

1K

S914

(PS)

S915

(PTY)

S910

(TUNING, )

S911

(TUNING, )

S912

(TUNER/ BAND)

S913

(DIGITAL

S.WOOFER)

(RDS DISP MODE)

ABCD

E

FGH I J KLMNOPQRSTU

X

W

V

ABCDEFGHIJKLMNOPQRSTUVWXYZ

S902

(CLOCK/ TIMER)

S903

(-DEMO)

IC901

C2BBFD000317

SYSTEM CONTROL/

FL DRIVE

C

B

A

Q901

UN4212TA

RESET

R936

100

R919

15K

R991

47K

R918 10K

R928 47K

L902 1 H

D901

1SS291TA

L901

10 H

R951

330K

R952

10M

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

R993

100K

D931

MA165TA

D933 MA165TA

R990

100K

C916

6.3V100

D951

LNJ301MPUJAD

(DIGITAL S.WOOFER)R995

220

D954

SELS5923C

(PLAY/ REC)R986

1.5K

D306

SELS5223C

( ) R939

1.5K

C905

1000P

C901

6.3V100

R935 100

R934 100

R988 1K

R937 10K

R987 1K

R926

2.2K

C912

0.1

R954

100K

C926

1000P

R960 1.5K

R958 1K

R999

100K

R959 47

R969

2.7K

D902

1SS291TA

C903

0.01

C902

10V1000

X902

(32.7kHz)

C911

18P

C910

20P

X901

(6MHz)

1

3

2

D905 1SS291TA

EFIKLMNO Q

R940

1K

R929 1K

R930 1K

R932 1K

R931 1K

R976

100K

R956

1K R957

1K

C915

0.01 C925

1000P

R953 100

A

B

C

D

G

H

J

C914

50V2.2

D904

MA165TA

A

B

C

D

E

ABCDEFGH I J KLMNOPQRST UVWX

1

11

21

2

12

22

3

13

23

4

14

24

5

15

25

6

16

26

7

17

27

8

18

28

9

19

29

10

20

30

3132333435363738394041424344454647484950

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100

-

VP

P13

P14

P15

P16

P17

P18

P19

P20

P21

P22

P23

P24

P25

P26

P27

P28

P29

P30

P31

P32

VDD4

P33

P34

P35

P36

P37

P38

REGIN0

REGIN1

8G

REMOCON

RDS DATA

RDS CLK

HP SW

MIC DET

VR JOGA

VR JOGB

NC(GND)

SH REQ

KEY KARAOKE

KEY TU

VDD1

XC OUT

XC IN

Vss

X OUT

XIN

RESET

AC IN

SEL/ TUNER

SEL TUNER

ST/ AV.6CH

LC72 CK

LC72 DI/ ST

LC72 CE

LC72 DO

CHECK

STAND-BY

TIMER

S.W.LED

LOUNGE

CHORUS

MUTE

NC

POWER

Vss2

VDD2

MUTE2

NC

MUTE3

SHCS

SHDO

SHDI

SHCK

E DET

CR TIMER

SD

VDD3

P12

P11

P10

P9

P8

P7

P6

P5

P4

P3

P2

P1

1G

2G

3G

4G

5G

6G

7G

R994 100K

U

R949

4.7K

R950

100

:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE

5.1V

2V/2ms.DIV.

5V

0V

5V

0V

T10ms.

2V/2ms.DIV. 0V

5V

-

30.1V

-

30.1V

-

29.3V

-

29.3V

-

29.3V

-

26.3V

-

20.5V

-

29.3V

-

29.3V

-

29.3V

-

23.5V

-

20.5V

-

23.4V

-

23.4V

-

23.7V

-

20.7V

-

29.6V

-

29.6V

-

29.6V

-

23.7V

-

26.6V

-

26.5V

5.1V

-

29.5V

-

29.5V

-

26.5V

-

17.2V

-

5.3V

-

10.3V

0.4V

0V

-

23.4V

-

20.5V

-

26.3V

-

26.3V

5.1V

-

23.4V

-

20.5V

-

26.2V

-

29.2V

-

26.2V

-

26.2V

-

26.1V

-

26.3V

-

23.5V

-

23.5V

-

25.6V

-

27.5V

-

27.5V

-

25.5V

-

23.5V

-

25.6V

5.1V

2.6V

0.6V

5.1V

0V

1.4V

5.1V

2.3V

2.7V

1.6V

5V

2.2V

0V

5.1V

4.6V

0V

2.5V

0V

5V

0V

5.1V

3.3V

1.9V

1.4V

0V

5.1V

4.8V

0V

FM / AM

-

30V

4V

T 5.5ms.

0V

4V

T 5.5ms.

-

30V

FM / AM

3.3V

P-P

F=6MHz

FM / AM

4.2V

P-P

F=6MHz

FM / AM

5.2V

P-P

F=32.7kHz

FM / AM

5.2V

P-P

F=32.7kHz

FM / AM

2V

P-P

F=32.7kHz

FM / AM

13 14 15 16 17 18 19 20 21 22 23 24

SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-2

W901B

W902B

IC151

C1BB00000527

RDS SIGNAL

DEMODULATOR

123

X151

R158

1K

R154

100K

R153

100K

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

BA

COM

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Q902

UN411FTA

MUTING CONT.

ABC

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16

VREF

HPX IN

VDDA

VssA

FL OUT

CIN

TEST

X OUT

IDR

RDCL

RDDA

RST

MODE

VDDB

VssB

XIN

R962

22K

VR901

EVQVBXFK124B

(VOLUME)

R945

100

R961

22K

R943

100

C917

0.01

C155

1000P

C153

1000P

C160

1000P

C159

6.3V47

R152

1K

R151

1K

C154

560P C158

6.3V47

C151

16V10

D907

MA165TA

M

BC

R946

1K

C909

1000P C918

6.3V100

DEA

R941

1K

L153

1 H

R155

120

D151

MA4051MTA

L151

100 H

L152

100 H

C156

47P

C157

47P

A

B

C

D

E

F

G

H

I

J

K

L

N

O

Q

S

T

AOPERATION CIRCUIT

R942

2.2K

R974

1K

C931

16V10

R965

3.9K

R966

3.9K

D961

MA4075MTA R975

22K

D906

MA165TA

U

N

1

2

3

Z901

B3RAD0000028

(REMOTE SENSOR)

R157

1K

C152

330P

W902A

W901A

CP101

C

F

G

B

A

E

D

DET

Rch IN

CE

Lch IN

DI

DO

CL

+B(2)

SD

+B(1)

T.GND

Q707

2SB1417PQTA

REGULATOR

Q723

2SC3940AQSTA

REGULATOR

R763

4.7K

R230 1K

R229 1K

D721

MA4300MTA R708

4.7K

C707

0.047

C706

35V10

C737

50V100

To

SOUND

PROCESSOR

(SH-DV280)

To TUNER UINT

on SCHEMATIC

DIAGRAM-5/11,12-A

C735

0.047

B

A

R563

2.7K

R564

2.7K

C660

16V10

C659

16V10

R615

4.7K

R614

4.7K

R631

3.9K

R632

3.9K C202

0.1

R203

100K

R204

100K

C201

0.1

C602

16V10

C708

0.047

R211

270

D201

MA4056MTA

R687

1.5K

R688

1.5K

Q605,606

2SD2144STA

MUTING Q605

Q606

R683

1K

R617

4.7K

2

1

3

4

5

6

7

8

9

10

11

C

B

A

X0X1VDD

G

Vss

INHZ0Z1Y1 Y0

16 15 14 13 12 11 10 9

12345678

IC201

BU4053BCFE2

SIGNAL SELECTOR

C655

16V10

C656

16V10

R606

4.7K

R605

4.7K

2

15

3

4

5

6

7

8

9

10

11

12

13

14

1

2

15

3

4

5

6

7

8

9

10

11

12

13

14

1

20

2

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

K

L

M

I

J

E

F

C

D

E

F

G

E

F

G

A

B

C

D

A

B

G

H

C601

16V10

R598

2.2K

R597

2.2K

R205

100K

H

G

R202

100K

B

C

D

E

F

C509

0.01

C510

0.01

R693

1K

R692

1K

C664

16V10

C725

16V47

A

C

R696

47K

Q609,610

2SD2144STA

MUTING

Q609

Q610

Q612

UN411FTA

MUTING CONT.

B

CR694

22K

R511

47 R509

47

R512 47 R510 47

W501

D719

RL1N4003N02

D720

RL1N4003N02

D717

RL1N4003N02

D718

RL1N4003N02

H

D

C

R695

470

D611

MA4051MTA

C740

16V10

C733

0.047

D737

MA4082LTA

R764

330

MAIN CIRCUIT

B

C731

1000P

C741

0.1

TUNER Lch/C

TUNER Rch

A.GND

Lch IN

Rch IN

+B(10V)

SUR L

SUR R

S.W

MIC

-

B(

-

10V)

V.GND

D.GND

CS/ REQ

CLK

DATA

CT GND

SH FL1

SH FL2

SYNC

R603

3.3K

A

B

R684

1K

A

C715

25V6800

C714

1000P

D705

RL1N4003N02

A

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE

-30.1V

5.1V

:AUDIO SIGNAL LINE

6V

7.6V

3.3V

0V

3.3V

2.6V

0V

5.1V

2.5V2.7V

2.5V

5.1V

2.5V

14.7V

10.4V

-

37.3V

-

30.1V

-

30.7V

14.7V7.2V

7.8V

-

10V

-

10V

0V

-

10.2V

5.1V

4.9V

0V

-

10V

0V

0.7V

5.7V 0V 0V 0V 0V 0V

6V

7.2V

7.6V

-

10.4V

0V 0V

-

10.4V

: FM SIGNAL LINE

: AM SIGNAL LINE

25 26 27 28 29 30 31 32 33 34 35 36

SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-3

M

Q708

UN4211TA

SWITCHING

(POWER)

Q601 Q602

D756

MA700ATA

C603 470P

C604 470P

C607 470P

C608 470P

C649 1000P

C650 1000P

C605 1000P

C606 1000P

C648

1000P

C617

0.01

R637

15K

R638

68K

R619 120K

R622 120K

R621 150K

R624 150K

R620

120K

R612 56K

R611 56K

R610 150K

R609 56K

R608 56K

R607 56K

C610 56P

C609 56P

C612 15P

C611 39P

C614 47P

C613 47P

R627

470K

C616

50V0.47

N

D601

SB360L6508

D602

SB360L6508

D754

RL1N4003N02

C761

0.1

D701

1N5402BM21 C709

0.1

IC601

RSN311W64B

POWER AMP

D757

MA700ATA

123456789101112131415181920212223242526 1617

R604

3.3K

R601

3.3K

R602

3.3K

R618

4.7K

Q601,602

2SC5398RSTA

PROTECTOR

D607

1SS291TA

L

K

D658

MA165TA

D657

MA165TA

B

A

R685

1K

R686

1K

Q607, 608

2SD2144STA

MUTING

Q607

Q608

C705

0.01

G

R776

10K

Q709

2SD2144STA

SWITCHING

(POWER)

R738

3.9K

R739

47K

C622

10V100

D659

MA165TA

D751

1N5402BM21

D703

1N5402BM21

D753

RL1N4003N02

D761

RL1N4003N02

D755

RL1N4003N02

D752

1N5402BM21

D702

1N5402BM21

D704

1N5402BM21

G

F

E

D

AB C

D558

MA165TA

R544

10K

R572

15K

R648

120

C618

0.01

R635

2.2K

C619

0.1

Q503

2SC5398RSTA

SWITCHING

C704

35V4700

C702

35V4700

C703

35V4700

C701

35V4700

R761

220

R628

22K

R691

68

R647

270

R623

120K

CN781

F

C

A

B

D

E

Q551

2SA1995RSTA

SIGNAL LEVEL DET.

Q555

2SD2144STA

SIGNAL LEVEL DET.

Q702

2SB1548PQAU

REGULATOR

Q725

2SC5398RSTA

STABILIZER Q705

2SA1995RSTA

STABILIZER

Q701

2SD2374PQAU

REGULATOR

R556

100K

R557

10K

C721

10V100

D725

MA4082LTA

R729

220

C723

0.047

C639

1000P

C640

1000P

C641

1000P

C642

1000P

C732

0.022

C647

1000P

D738

MA165TA

D730

MA4091HTA

R768

100

R724

3.9K

C718

25V100

D723

MA4150HTA

R723

5.6K

C719

0.047

R725

10

C724

0.047

C710

0.047

R546

18K

R551

18K

R552

47K

R555

22K

C550

0.01

D552

MA165TA D555

MA4100MTA

R547

18K

E602

E601

R749

1K

D739

MA165TA

POWER SUPPLY CIRCUIT

C

11032 4 5 6 7 8 9

W701B

11032 4 5 6 7 8 9

R720

3.9K

C734

50V3.3

D758

MA165TA

C722

25V100

C720

0.047

C717

16V33

MAIN CIRCUIT

B

G

R765

220

N

R569

10K

D554

MA165TA

C371

6.3V100

Q556

2SC5398RSTA

SWITCHING

R568

100

D553

MA700ATA

C556

16V10

C555

16V10

Q557

2SA1995RSTA

MOTOR DRIVE

Q553

2SD2144STA

MOTOR DRIVE

R570

2.2M

R560

100K

C559

0.01

D581

RL1N4003N02

R567

22

FAN MOTOR

JK551

R566

68K

Q554

2SA1995RSTA

SIGNAL LEVEL DET.

M

R719

3.3K

Q703,704

2SD2137PQTA

REGULATOR

R796

2.2

Q703

Q704

R769

27

R727

3.9K

C554

16V220

R561

100K

C552

0.01 R559

4.7K

R591

4.7K

C551

50V2.2

D551

MA165TA

12

D583

RL1N4003N02

N

R721

4.7

R722

2.2

AB

R753

0.47

R754

0.47

Q711,712

2SB1548PQAU

REGULATOR

Q711

R797

2.2 R767

27

R558

2.2K

D582

RL1N4003N02

Q712

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

7.6V

-

10.4V

0V0V59.5V

-

59.5V

0V28.9V

-

29.3V

0V0V0V0V

-

0.2V

29.4V

-

29.7V

0V0V54.1V

-

51.4V

0V0V0V0V

0V

5.1V5.1V

0V 0V

0.7V

0V 0V

2.1V

14.7V

0.7V

0V

0.7V

0V

29.2V

29.2V14.7V

15.2V

-

30.1V

-

11V

-

10.4V

-

11V

-

0.6V

14.1V

13.6V

9.6V

10.2V

10.4V

-

10.4V

14.7V

7.6V

7V

0V

7.6V

0.3V

-

10.4V

-

10.4V

-

10.4V

7.6V

6.8V

FAN ON:1.6V

0V

FAN ON:0V

0.5V

FAN ON:0V4.7V

0V

0.5V

8.1V

30.1V

30.1V7.6V

7.6V

0V

10.4V

13.6V

10.4V 14.1V

13.6V

A

B

C

D

E

F

G

H

37 38 39 40 41 42 43 44 45 46 47 48

SA-DV280(EB,EG) MAIN, AC IN, POWER TRANSFORMER(A),(B) CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-4

L601

2

1

3

4

5

6

7

8

9

10

11

12

2

1

3

4

5

6

7

8

R639

10

C621

0.1

E

F

D

CP601

CP602

R641

10

A

B

IJ

C

C631

0.1

G

Lch

JK601

HF(6 )

LF(8 )

Rch

JK602

HF(6 )

LF(8 )

A

B

C

R651

10

C627

0.1

C629

0.1

C635

0.047

R649

10

L605

R642

10

C620

0.1

C630

0.1

R640

10

L602

C637

0.047

C636

0.047

R652

10

C626

0.1

C628

0.1

R650

10

L606

C632

0.047

SPEAKERS

GND

C OUT

GND

SUR L OUT

SUR R OUT

ECO

SH SYNC

SA SYNC

D.GND

BU5V

RS13V

+B

NC

W722A

W721A

2

1

3

4

5

6

7

8

9

10

2

1

3

4

E

F

H

D

C

G

F

E

D

S1

S2

S3

S4

AC1

CT

AC2

S7

FL2

FL1

S1

S2

S3

S4

MAIN CIRCUIT

B

C

A

D

B

T701

CN701

CN702

CN703

CN704

CN705

CN706

CN707

CN708

CN709

CN710

R793

1

CN601

C652

1000P

C644

1000P

C643

1000P

C651

0.047

C646

0.047

C645

0.047

Rch

Lch

AC IN

JK701

L701

F1 T2A

T702

Z701

C791

1000P

3 1

24 RL702

R794

47K

Q791

2SD2144STA

RELAY DRIVE

D745

MA4051MTA

C753

0.01

C755

16V1000

Q726

2SC3940AQSTA

REGULATOR D746

RL1N4003N02

D747

MA4068LTA C758

0.01

C759

10V47

C754

0.01

D500

MA165TA

W2/W3

W1

CN602

FP791

K5G502AA0002

JK603

CENTER(8 )

SURROUND(8 )

R646

10

C624

0.1

C634

0.1

R644

10

L604

R645

10

C625

0.1 C633

0.1

R643

10

L603

DAC IN CIRCUIT

2

1

3

4

5

6

7

8

9

10

11

12

2

1

3

4

5

6

7

8

R777

1K

R774

18

D711

RL1N4003N02 R773

18

R712 2.2K

A

B

C

A

C

B

R795

3.9K

D743

RL1N4003N02

D741

RL1N4003N02

D742

RL1N4003N02

D744

RL1N4003N02

R771

2.2K D740

MA165TA

POWER TRANSFORMER

(B) CIRCUIT

F

POWER TRANSFORMER

(A) CIRCUIT

E

W722B

W721B

10

2

1

3

4

5

6

7

8

9

CN713

CN712

CN711 W1

W3

W2

2

1

3

4

R772

22K

A

B

C

D

FP792

K5G502AA0002

SPEAKERS

GND

C OUT

GND

SUR L IN

SURRIN

ECO

SH SYNC

SA SYNC

D.GND

BU5V

RS13V

+B

NC

S1

S2

S3

S4

AC1

CT

AC2

S7

FL2

FL1

S1

S2

S3

S4

R798

2.2

For [EB] area.

For [EG] area.

230-240V 50Hz [EB]

230V 50Hz [EG]

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

0.7V

0V

6V

10.7V6V

6.7V

AC22.6V

AC11.7V

AC4.7V

AC

29.2V

AC9.4V

A

B

C

D

E

F

G

H

123456789101112

SA-DV280(EB,EG) TUNER UNIT CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-5

C

B

24 23 22 21 20 19 18 17 16 15 14 13

1 2 3 4 5 6 7 8 9 10 11 12

FM IF IN

AM MIX OUT

REG

AM IF IN

GND

SD

ST

FM DET

Vcc

STRQ

FM/AM

MONO

AM OSC OUT

AM OSC

AFC

AM RF IN

AGC

AM OUT

DET OUT

PILOT IN

MPX IN

PILOT OUT

Rch OUT

Lch OUT

BADFC E

470

2.7K1

68

0.1

1000P

470

0.01

5 ~ 150

AB

1

22

100

0.018

11K

100K

4700P

B

A

4700P

100K

1K1

0.018

1000P ~ 0.01

150P

68K 0.1

1022K4.7

4.7

47K

1000P

3.3

A

D

B

C

10K

0.01

330

1000P

LA1833MN

FM/AM IF AMP,

DET/AM OSC,MIX/FM MPX

A

B

A

D

A

2SC2712

SWITCHING

3.3K

2SC2413

FM IF AMP

2SC2413

FM IF AMP

330

11 13 245678910

1K ~ 10K

470

4.7K ~ 22K

0.022

0.1

DTA114

POWER SUPPLY

(FM:ON)

1K ~ 10K

100P ~ 1000P

0.01 ~ 0.068 10K ~ 100K

1K ~ 10K

270 ~ 680

270K ~ 680K 10P ~

39P 270K ~

680K

CL

DO

DI

Lch OUT

CE

Rch OUT

DET

+B(2)

SD

+B(1)

T.GND

To MAIN CIRCUIT(CP101)

on SCHEMATIC DIAGRAM-2/19-A

B

1

0.47

1 2 3 4 5 6 7 8 9 10

20 19 18 17 16 15 14 13 12 11

XIN

CE

DI

CL

DO

B01

B02

B03

B04

I01 IF IN

I02

AM IN

FM IN

VDD

PD

AIN

A OUT

Vss

X OUT

10K

0.047

100K

5 ~12P

1000P

A

B

C

D

0.58 H

390

220

27K

100P0.01

560

1K

4.7

DZS5.1B

10K

27P~ 33P

27P

7.2MHz

22K~100K

100

1000P

10K

1K

3.3K

10K

1K

470

ABCD

22

5.6K

0.01

A

B

C

D

E

F

LC72131M

PLL FREQUENCY

SYNTHESIZER

AM ANT

EXT

LOOP

FM ANT

(75 )

100

0.01

100

2SC2413

BUFFER AMP

2SK360

FM OSC

2SK360

RF AMP

22P 15P

22P0.022

2.7K47P

33K

100K

2P

8P

10K 10K 33K

33K

100K

0.022

100

27P

2P

4P

10K

220

0.022

150

5P

18P

27P

2SC2059

FM MIXER

0.47 H

10P ~ 33P

330P ~

580P

1P ~ 5P

680 ~

2.2K

0 ~ 220

1 H

820K ~ 2.2M

0.022

680

1000P

330

1P ~ 5P

6P ~ 10P

6 ~ 220

5P

5P ~ 12P

0~5P

100K

Z101 TUNER UNIT(RAN0005EM-2) :POSITIVE VOLTAGE LINE

:FM SIGNAL LINE

:FM OSC SIGNAL LINE

:AM SIGNAL LINE

:AM OSC SIGNAL LINE

A

B

C

D

E

F

G

H

123456789101112

SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-1

S904

(PLAY/ REC)

FL901 (A2BB00000084)

1

7

5

4

6

3

2

T

S

S908

(INPUT SELECTOR)

S907

(SET)

S906

(TUNING MODE)

S905

(FM AUTO/MONO)

JK903

PHONES

3.5mm STEREO

R997

150

R996

150

D973

MA4030MTA

C921

1000P

C922

35V33

C920

25V22

R922

10K

R921

10K

R944

2.2K

R912

4.7K R911

3.3K R910

2.2K R909

1.8K R916

1.5K R915

1.2K R914

1K R913

820

R907

3.3K R906

2.2K R905

1.8K R904

1.5K R903

1.2K R902

1K R901

820

FL DISPLAY

1 6 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 53 542 5 7 9

W905

S901

(/)

C928

25V22

NOTE:

The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"

indicates the schematic diagram serial number located on the left corner in the schematic diagram.

AOPERATION CIRCUIT

C919

25V22

C927

25V22

C396

0.047

C923

0.1

C395

0.047

D974

MA165TA

C907

470P

C924

0.1

C904

0.01

R924

1K

C908

470P

R925

1K

S914

(PS)

S915

(PTY)

S910

(TUNING, )

S911

(TUNING, )

S912

(TUNER/ BAND)

S913

(DIGITAL

S.WOOFER)

(RDS DISP MODE)

ABCD

E

FGH I J KLMNOPQRSTU

X

W

V

ABCDEFGHIJKLMNOPQRSTUVWXYZ

S902

(CLOCK/ TIMER)

S903

(-DEMO)

IC901

C2BBFD000317

SYSTEM CONTROL/

FL DRIVE

C

B

A

Q901

UN4212TA

RESET

R936

100

R919

15K

R991

47K

R918 10K

R928 47K

L902 1 H

D901

1SS291TA

L901

10 H

R951

330K

R952

10M

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

R993

100K

D931

MA165TA

D933 MA165TA

R990

100K

C916

6.3V100

D951

LNJ301MPUJAD

(DIGITAL S.WOOFER)R995

220

D954

SELS5923C

(PLAY/ REC)R986

1.5K

D306

SELS5223C

( ) R939

1.5K

C905

1000P

C901

6.3V100

R935 100

R934 100

R988 1K

R937 10K

R987 1K

R926

2.2K

C912

0.1

R954

100K

C926

1000P

R960 1.5K

R958 1K

R999

100K

R959 47

R969

2.7K

D902

1SS291TA

C903

0.01

C902

10V1000

X902

(32.7kHz)

C911

18P

C910

20P

X901

(6MHz)

1

3

2

D905 1SS291TA

EFIKLMNO Q

R940

1K

R929 1K

R930 1K

R932 1K

R931 1K

R976

100K

R956

1K R957

1K

C915

0.01 C925

1000P

R953 100

A

B

C

D

G

H

J

C914

50V2.2

D904

MA165TA

A

B

C

D

E

ABCDEFGH I J KLMNOPQRST UVWX

1

11

21

2

12

22

3

13

23

4

14

24

5

15

25

6

16

26

7

17

27

8

18

28

9

19

29

10

20

30

3132333435363738394041424344454647484950

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100

-

VP

P13

P14

P15

P16

P17

P18

P19

P20

P21

P22

P23

P24

P25

P26

P27

P28

P29

P30

P31

P32

VDD4

P33

P34

P35

P36

P37

P38

REGIN0

REGIN1

8G

REMOCON

RDS DATA

RDS CLK

HP SW

MIC DET

VR JOGA

VR JOGB

NC(GND)

SH REQ

KEY KARAOKE

KEY TU

VDD1

XC OUT

XC IN

Vss

X OUT

XIN

RESET

AC IN

SEL/ TUNER

SEL TUNER

ST/ AV.6CH

LC72 CK

LC72 DI/ ST

LC72 CE

LC72 DO

CHECK

STAND-BY

TIMER

S.W.LED

LOUNGE

CHORUS

MUTE

NC

POWER

Vss2

VDD2

MUTE2

NC

MUTE3

SHCS

SHDO

SHDI

SHCK

E DET

CR TIMER

SD

VDD3

P12

P11

P10

P9

P8

P7

P6

P5

P4

P3

P2

P1

1G

2G

3G

4G

5G

6G

7G

R994 100K

U

R949

4.7K

R950

100

:AUDIO SIGNAL LINE

: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE

5.1V

2V/2ms.DIV.

5V

0V

5V

0V

T10ms.

2V/2ms.DIV. 0V

5V

-

30.1V

-

30.1V

-

29.3V

-

29.3V

-

29.3V

-

26.3V

-

20.5V

-

29.3V

-

29.3V

-

29.3V

-

23.5V

-

20.5V

-

23.4V

-

23.4V

-

23.7V

-

20.7V

-

29.6V

-

29.6V

-

29.6V

-

23.7V

-

26.6V

-

26.5V

5.1V

-

29.5V

-

29.5V

-

26.5V

-

17.2V

-

5.3V

-

10.3V

0.4V

0V

-

23.4V

-

20.5V

-

26.3V

-

26.3V

5.1V

-

23.4V

-

20.5V

-

26.2V

-

29.2V

-

26.2V

-

26.2V

-

26.1V

-

26.3V

-

23.5V

-

23.5V

-

25.6V

-

27.5V

-

27.5V

-

25.5V

-

23.5V

-

25.6V

5.1V

2.6V

0.6V

5.1V

0V

1.4V

5.1V

2.3V

2.7V

1.6V

5V

2.2V

0V

5.1V

4.6V

0V

2.5V

0V

5V

0V

5.1V

3.3V

1.9V

1.4V

0V

5.1V

4.8V

0V

FM / AM

-

30V

4V

T 5.5ms.

0V

4V

T 5.5ms.

-

30V

FM / AM

3.3V

P-P

F=6MHz

FM / AM

4.2V

P-P

F=6MHz

FM / AM

5.2V

P-P

F=32.7kHz

FM / AM

5.2V

P-P

F=32.7kHz

FM / AM

2V

P-P

F=32.7kHz

FM / AM

A

B

C

D

E

F

G

H

123456789101112

SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-1

S904

(PLAY/ REC)

FL901 (A2BB00000084)

1

7

5

4

6

3

2

T

S

S908

(INPUT SELECTOR)

S907

(SET)

S906

(TUNING MODE)

S905

(FM AUTO/MONO)

JK903

PHONES

3.5mm STEREO

R997

150

R996

150

D973

MA4030MTA

C921

1000P

C922

35V33

C920

25V22

R922

10K

R921

10K

R944

2.2K

R912

4.7K R911

3.3K R910

2.2K R909

1.8K R916

1.5K R915

1.2K R914

1K R913

820

R907

3.3K R906

2.2K R905

1.8K R904

1.5K R903

1.2K R902

1K R901

820

FL DISPLAY

1 6 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 53 542 5 7 9

W905

S901

(/)

C928

25V22

NOTE:

The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"

indicates the schematic diagram serial number located on the left corner in the schematic diagram.

AOPERATION CIRCUIT

C919

25V22

C927

25V22

C396

0.047

C923

0.1

C395

0.047

D974

MA165TA

C907

470P

C924

0.1

C904

0.01

R924

1K

C908

470P

R925

1K

S914

(PS)

S915

(PTY)

S910

(TUNING, )

S911

(TUNING, )

S912

(TUNER/ BAND)

S913

(DIGITAL

S.WOOFER)

(RDS DISP MODE)

ABCD

E

FGH I J KLMNOPQRSTU

X

W

V

ABCDEFGHIJKLMNOPQRSTUVWXYZ

S902

(CLOCK/ TIMER)

S903

(-DEMO)

IC901

C2BBFD000317

SYSTEM CONTROL/

FL DRIVE

C

B

A

Q901

UN4212TA

RESET

R936

100

R919

15K

R991

47K

R918 10K

R928 47K

L902 1 H

D901

1SS291TA

L901

10 H

R951

330K

R952

10M

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

R993

100K

D931

MA165TA

D933 MA165TA

R990

100K

C916

6.3V100

D951

LNJ301MPUJAD

(DIGITAL S.WOOFER)R995

220

D954

SELS5923C

(PLAY/ REC)R986

1.5K

D306

SELS5223C

( ) R939

1.5K

C905

1000P

C901

6.3V100

R935 100

R934 100

R988 1K

R937 10K

R987 1K

R926

2.2K

C912

0.1

R954

100K

C926

1000P

R960 1.5K

R958 1K

R999

100K

R959 47

R969

2.7K

D902

1SS291TA

C903

0.01

C902

10V1000

X902

(32.7kHz)

C911

18P

C910

20P

X901

(6MHz)

1

3

2

D905 1SS291TA

EFIKLMNO Q

R940

1K

R929 1K

R930 1K

R932 1K

R931 1K

R976

100K

R956

1K R957

1K

C915

0.01 C925

1000P

R953 100

A

B

C

D

G

H

J

C914

50V2.2

D904

MA165TA

A

B

C

D

E

ABCDEFGH I J KLMNOPQRST UVWX

1

11

21

2

12

22

3

13

23

4

14

24

5

15

25

6

16

26

7

17

27

8

18

28

9

19

29

10

20

30

3132333435363738394041424344454647484950

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100

-

VP

P13

P14

P15

P16

P17

P18

P19

P20

P21

P22

P23

P24

P25

P26

P27

P28

P29

P30

P31

P32

VDD4

P33

P34

P35

P36

P37

P38

REGIN0

REGIN1

8G

REMOCON

RDS DATA

RDS CLK

HP SW

MIC DET

VR JOGA

VR JOGB

NC(GND)

SH REQ

KEY KARAOKE

KEY TU

VDD1

XC OUT

XC IN

Vss

X OUT

XIN

RESET

AC IN

SEL/ TUNER

SEL TUNER

ST/ AV.6CH

LC72 CK

LC72 DI/ ST

LC72 CE

LC72 DO

CHECK

STAND-BY

TIMER

S.W.LED

LOUNGE

CHORUS

MUTE

NC

POWER

Vss2

VDD2

MUTE2

NC

MUTE3

SHCS

SHDO

SHDI

SHCK

E DET

CR TIMER

SD

VDD3

P12

P11

P10

P9

P8

P7

P6

P5

P4

P3

P2

P1

1G

2G

3G

4G

5G

6G

7G

R994 100K

U

R949

4.7K

R950

100

:AUDIO SIGNAL LINE

: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE

5.1V

2V/2ms.DIV.

5V

0V

5V

0V

T10ms.

2V/2ms.DIV. 0V

5V

-

30.1V

-

30.1V

-

29.3V

-

29.3V

-

29.3V

-

26.3V

-

20.5V

-

29.3V

-

29.3V

-

29.3V

-

23.5V

-

20.5V

-

23.4V

-

23.4V

-

23.7V

-

20.7V

-

29.6V

-

29.6V

-

29.6V

-

23.7V

-

26.6V

-

26.5V

5.1V

-

29.5V

-

29.5V

-

26.5V

-

17.2V

-

5.3V

-

10.3V

0.4V

0V

-

23.4V

-

20.5V

-

26.3V

-

26.3V

5.1V

-

23.4V

-

20.5V

-

26.2V

-

29.2V

-

26.2V

-

26.2V

-

26.1V

-

26.3V

-

23.5V

-

23.5V

-

25.6V

-

27.5V

-

27.5V

-

25.5V

-

23.5V

-

25.6V

5.1V

2.6V

0.6V

5.1V

0V

1.4V

5.1V

2.3V

2.7V

1.6V

5V

2.2V

0V

5.1V

4.6V

0V

2.5V

0V

5V

0V

5.1V

3.3V

1.9V

1.4V

0V

5.1V

4.8V

0V

FM / AM

-

30V

4V

T 5.5ms.

0V

4V

T 5.5ms.

-

30V

FM / AM

3.3V

P-P

F=6MHz

FM / AM

4.2V

P-P

F=6MHz

FM / AM

5.2V

P-P

F=32.7kHz

FM / AM

5.2V

P-P

F=32.7kHz

FM / AM

2V

P-P

F=32.7kHz

FM / AM

13 14 15 16 17 18 19 20 21 22 23 24

SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-2

W901B

W902B

IC151

C1BB00000527

RDS SIGNAL

DEMODULATOR

123

X151

R158

1K

R154

100K

R153

100K

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

BA

COM

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Q902

UN411FTA

MUTING CONT.

ABC

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16

VREF

HPX IN

VDDA

VssA

FL OUT

CIN

TEST

X OUT

IDR

RDCL

RDDA

RST

MODE

VDDB

VssB

XIN

R962

22K

VR901

EVQVBXFK124B

(VOLUME)

R945

100

R961

22K

R943

100

C917

0.01

C155

1000P

C153

1000P

C160

1000P

C159

6.3V47

R152

1K

R151

1K

C154

560P C158

6.3V47

C151

16V10

D907

MA165TA

M

BC

R946

1K

C909

1000P C918

6.3V100

DEA

R941

1K

L153

1 H

R155

120

D151

MA4051MTA

L151

100 H

L152

100 H

C156

47P

C157

47P

A

B

C

D

E

F

G

H

I

J

K

L

N

O

Q

S

T

AOPERATION CIRCUIT

R942

2.2K

R974

1K

C931

16V10

R965

3.9K

R966

3.9K

D961

MA4075MTA R975

22K

D906

MA165TA

U

N

1

2

3

Z901

B3RAD0000028

(REMOTE SENSOR)

R157

1K

C152

330P

W902A

W901A

CP101

C

F

G

B

A

E

D

DET

Rch IN

CE

Lch IN

DI

DO

CL

+B(2)

SD

+B(1)

T.GND

Q707

2SB1417PQTA

REGULATOR

Q723

2SC3940AQSTA

REGULATOR

R763

4.7K

R230 1K

R229 1K

D721

MA4300MTA R708

4.7K

C707

0.047

C706

35V10

C737

50V100

To

SOUND

PROCESSOR

(SH-DV280)

To TUNER UINT

on SCHEMATIC

DIAGRAM-5/11,12-A

C735

0.047

B

A

R563

2.7K

R564

2.7K

C660

16V10

C659

16V10

R615

4.7K

R614

4.7K

R631

3.9K

R632

3.9K C202

0.1

R203

100K

R204

100K

C201

0.1

C602

16V10

C708

0.047

R211

270

D201

MA4056MTA

R687

1.5K

R688

1.5K

Q605,606

2SD2144STA

MUTING Q605

Q606

R683

1K

R617

4.7K

2

1

3

4

5

6

7

8

9

10

11

C

B

A

X0X1VDD

G

Vss

INHZ0Z1Y1 Y0

16 15 14 13 12 11 10 9

12345678

IC201

BU4053BCFE2

SIGNAL SELECTOR

C655

16V10

C656

16V10

R606

4.7K

R605

4.7K

2

15

3

4

5

6

7

8

9

10

11

12

13

14

1

2

15

3

4

5

6

7

8

9

10

11

12

13

14

1

20

2

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

K

L

M

I

J

E

F

C

D

E

F

G

E

F

G

A

B

C

D

A

B

G

H

C601

16V10

R598

2.2K

R597

2.2K

R205

100K

H

G

R202

100K

B

C

D

E

F

C509

0.01

C510

0.01

R693

1K

R692

1K

C664

16V10

C725

16V47

A

C

R696

47K

Q609,610

2SD2144STA

MUTING

Q609

Q610

Q612

UN411FTA

MUTING CONT.

B

CR694

22K

R511

47 R509

47

R512 47 R510 47

W501

D719

RL1N4003N02

D720

RL1N4003N02

D717

RL1N4003N02

D718

RL1N4003N02

H

D

C

R695

470

D611

MA4051MTA

C740

16V10

C733

0.047

D737

MA4082LTA

R764

330

MAIN CIRCUIT

B

C731

1000P

C741

0.1

TUNER Lch/C

TUNER Rch

A.GND

Lch IN

Rch IN

+B(10V)

SUR L

SUR R

S.W

MIC

-

B(

-

10V)

V.GND

D.GND

CS/ REQ

CLK

DATA

CT GND

SH FL1

SH FL2

SYNC

R603

3.3K

A

B

R684

1K

A

C715

25V6800

C714

1000P

D705

RL1N4003N02

A

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE

-30.1V

5.1V

:AUDIO SIGNAL LINE

6V

7.6V

3.3V

0V

3.3V

2.6V

0V

5.1V

2.5V2.7V

2.5V

5.1V

2.5V

14.7V

10.4V

-

37.3V

-

30.1V

-

30.7V

14.7V7.2V

7.8V

-

10V

-

10V

0V

-

10.2V

5.1V

4.9V

0V

-

10V

0V

0.7V

5.7V 0V 0V 0V 0V 0V

6V

7.2V

7.6V

-

10.4V

0V 0V

-

10.4V

: FM SIGNAL LINE

: AM SIGNAL LINE

13 14 15 16 17 18 19 20 21 22 23 24

SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-2

W901B

W902B

IC151

C1BB00000527

RDS SIGNAL

DEMODULATOR

123

X151

R158

1K

R154

100K

R153

100K

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

BA

COM

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Q902

UN411FTA

MUTING CONT.

ABC

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16

VREF

HPX IN

VDDA

VssA

FL OUT

CIN

TEST

X OUT

IDR

RDCL

RDDA

RST

MODE

VDDB

VssB

XIN

R962

22K

VR901

EVQVBXFK124B

(VOLUME)

R945

100

R961

22K

R943

100

C917

0.01

C155

1000P

C153

1000P

C160

1000P

C159

6.3V47

R152

1K

R151

1K

C154

560P C158

6.3V47

C151

16V10

D907

MA165TA

M

BC

R946

1K

C909

1000P C918

6.3V100

DEA

R941

1K

L153

1 H

R155

120

D151

MA4051MTA

L151

100 H

L152

100 H

C156

47P

C157

47P

A

B

C

D

E

F

G

H

I

J

K

L

N

O

Q

S

T

AOPERATION CIRCUIT

R942

2.2K

R974

1K

C931

16V10

R965

3.9K

R966

3.9K

D961

MA4075MTA R975

22K

D906

MA165TA

U

N

1

2

3

Z901

B3RAD0000028

(REMOTE SENSOR)

R157

1K

C152

330P

W902A

W901A

CP101

C

F

G

B

A

E

D

DET

Rch IN

CE

Lch IN

DI

DO

CL

+B(2)

SD

+B(1)

T.GND

Q707

2SB1417PQTA

REGULATOR

Q723

2SC3940AQSTA

REGULATOR

R763

4.7K

R230 1K

R229 1K

D721

MA4300MTA R708

4.7K

C707

0.047

C706

35V10

C737

50V100

To

SOUND

PROCESSOR

(SH-DV280)

To TUNER UINT

on SCHEMATIC

DIAGRAM-5/11,12-A

C735

0.047

B

A

R563

2.7K

R564

2.7K

C660

16V10

C659

16V10

R615

4.7K

R614

4.7K

R631

3.9K

R632

3.9K C202

0.1

R203

100K

R204

100K

C201

0.1

C602

16V10

C708

0.047

R211

270

D201

MA4056MTA

R687

1.5K

R688

1.5K

Q605,606

2SD2144STA

MUTING Q605

Q606

R683

1K

R617

4.7K

2

1

3

4

5

6

7

8

9

10

11

C

B

A

X0X1VDD

G

Vss

INHZ0Z1Y1 Y0

16 15 14 13 12 11 10 9

12345678

IC201

BU4053BCFE2

SIGNAL SELECTOR

C655

16V10

C656

16V10

R606

4.7K

R605

4.7K

2

15

3

4

5

6

7

8

9

10

11

12

13

14

1

2

15

3

4

5

6

7

8

9

10

11

12

13

14

1

20

2

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

K

L

M

I

J

E

F

C

D

E

F

G

E

F

G

A

B

C

D

A

B

G

H

C601

16V10

R598

2.2K

R597

2.2K

R205

100K

H

G

R202

100K

B

C

D

E

F

C509

0.01

C510

0.01

R693

1K

R692

1K

C664

16V10

C725

16V47

A

C

R696

47K

Q609,610

2SD2144STA

MUTING

Q609

Q610

Q612

UN411FTA

MUTING CONT.

B

CR694

22K

R511

47 R509

47

R512 47 R510 47

W501

D719

RL1N4003N02

D720

RL1N4003N02

D717

RL1N4003N02

D718

RL1N4003N02

H

D

C

R695

470

D611

MA4051MTA

C740

16V10

C733

0.047

D737

MA4082LTA

R764

330

MAIN CIRCUIT

B

C731

1000P

C741

0.1

TUNER Lch/C

TUNER Rch

A.GND

Lch IN

Rch IN

+B(10V)

SUR L

SUR R

S.W

MIC

-

B(

-

10V)

V.GND

D.GND

CS/ REQ

CLK

DATA

CT GND

SH FL1

SH FL2

SYNC

R603

3.3K

A

B

R684

1K

A

C715

25V6800

C714

1000P

D705

RL1N4003N02

A

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE

-30.1V

5.1V

:AUDIO SIGNAL LINE

6V

7.6V

3.3V

0V

3.3V

2.6V

0V

5.1V

2.5V2.7V

2.5V

5.1V

2.5V

14.7V

10.4V

-

37.3V

-

30.1V

-

30.7V

14.7V7.2V

7.8V

-

10V

-

10V

0V

-

10.2V

5.1V

4.9V

0V

-

10V

0V

0.7V

5.7V 0V 0V 0V 0V 0V

6V

7.2V

7.6V

-

10.4V

0V 0V

-

10.4V

: FM SIGNAL LINE

: AM SIGNAL LINE

25 26 27 28 29 30 31 32 33 34 35 36

SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-3

M

Q708

UN4211TA

SWITCHING

(POWER)

Q601 Q602

D756

MA700ATA

C603 470P

C604 470P

C607 470P

C608 470P

C649 1000P

C650 1000P

C605 1000P

C606 1000P

C648

1000P

C617

0.01

R637

15K

R638

68K

R619 120K

R622 120K

R621 150K

R624 150K

R620

120K

R612 56K

R611 56K

R610 150K

R609 56K

R608 56K

R607 56K

C610 56P

C609 56P

C612 15P

C611 39P

C614 47P

C613 47P

R627

470K

C616

50V0.47

N

D601

SB360L6508

D602

SB360L6508

D754

RL1N4003N02

C761

0.1

D701

1N5402BM21 C709

0.1

IC601

RSN311W64B

POWER AMP

D757

MA700ATA

123456789101112131415181920212223242526 1617

R604

3.3K

R601

3.3K

R602

3.3K

R618

4.7K

Q601,602

2SC5398RSTA

PROTECTOR

D607

1SS291TA

L

K

D658

MA165TA

D657

MA165TA

B

A

R685

1K

R686

1K

Q607, 608

2SD2144STA

MUTING

Q607

Q608

C705

0.01

G

R776

10K

Q709

2SD2144STA

SWITCHING

(POWER)

R738

3.9K

R739

47K

C622

10V100

D659

MA165TA

D751

1N5402BM21

D703

1N5402BM21

D753

RL1N4003N02

D761

RL1N4003N02

D755

RL1N4003N02

D752

1N5402BM21

D702

1N5402BM21

D704

1N5402BM21

G

F

E

D

AB C

D558

MA165TA

R544

10K

R572

15K

R648

120

C618

0.01

R635

2.2K

C619

0.1

Q503

2SC5398RSTA

SWITCHING

C704

35V4700

C702

35V4700

C703

35V4700

C701

35V4700

R761

220

R628

22K

R691

68

R647

270

R623

120K

CN781

F

C

A

B

D

E

Q551

2SA1995RSTA

SIGNAL LEVEL DET.

Q555

2SD2144STA

SIGNAL LEVEL DET.

Q702

2SB1548PQAU

REGULATOR

Q725

2SC5398RSTA

STABILIZER Q705

2SA1995RSTA

STABILIZER

Q701

2SD2374PQAU

REGULATOR

R556

100K

R557

10K

C721

10V100

D725

MA4082LTA

R729

220

C723

0.047

C639

1000P

C640

1000P

C641

1000P

C642

1000P

C732

0.022

C647

1000P

D738

MA165TA

D730

MA4091HTA

R768

100

R724

3.9K

C718

25V100

D723

MA4150HTA

R723

5.6K

C719

0.047

R725

10

C724

0.047

C710

0.047

R546

18K

R551

18K

R552

47K

R555

22K

C550

0.01

D552

MA165TA D555

MA4100MTA

R547

18K

E602

E601

R749

1K

D739

MA165TA

POWER SUPPLY CIRCUIT

C

11032 4 5 6 7 8 9

W701B

11032 4 5 6 7 8 9

R720

3.9K

C734

50V3.3

D758

MA165TA

C722

25V100

C720

0.047

C717

16V33

MAIN CIRCUIT

B

G

R765

220

N

R569

10K

D554

MA165TA

C371

6.3V100

Q556

2SC5398RSTA

SWITCHING

R568

100

D553

MA700ATA

C556

16V10

C555

16V10

Q557

2SA1995RSTA

MOTOR DRIVE

Q553

2SD2144STA

MOTOR DRIVE

R570

2.2M

R560

100K

C559

0.01

D581

RL1N4003N02

R567

22

FAN MOTOR

JK551

R566

68K

Q554

2SA1995RSTA

SIGNAL LEVEL DET.

M

R719

3.3K

Q703,704

2SD2137PQTA

REGULATOR

R796

2.2

Q703

Q704

R769

27

R727

3.9K

C554

16V220

R561

100K

C552

0.01 R559

4.7K

R591

4.7K

C551

50V2.2

D551

MA165TA

12

D583

RL1N4003N02

N

R721

4.7

R722

2.2

AB

R753

0.47

R754

0.47

Q711,712

2SB1548PQAU

REGULATOR

Q711

R797

2.2 R767

27

R558

2.2K

D582

RL1N4003N02

Q712

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

7.6V

-

10.4V

0V0V59.5V

-

59.5V

0V28.9V

-

29.3V

0V0V0V0V

-

0.2V

29.4V

-

29.7V

0V0V54.1V

-

51.4V

0V0V0V0V

0V

5.1V5.1V

0V 0V

0.7V

0V 0V

2.1V

14.7V

0.7V

0V

0.7V

0V

29.2V

29.2V14.7V

15.2V

-

30.1V

-

11V

-

10.4V

-

11V

-

0.6V

14.1V

13.6V

9.6V

10.2V

10.4V

-

10.4V

14.7V

7.6V

7V

0V

7.6V

0.3V

-

10.4V

-

10.4V

-

10.4V

7.6V

6.8V

FAN ON:1.6V

0V

FAN ON:0V

0.5V

FAN ON:0V4.7V

0V

0.5V

8.1V

30.1V

30.1V7.6V

7.6V

0V

10.4V

13.6V

10.4V 14.1V

13.6V

25 26 27 28 29 30 31 32 33 34 35 36

SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-3

M

Q708

UN4211TA

SWITCHING

(POWER)

Q601 Q602

D756

MA700ATA

C603 470P

C604 470P

C607 470P

C608 470P

C649 1000P

C650 1000P

C605 1000P

C606 1000P

C648

1000P

C617

0.01

R637

15K

R638

68K

R619 120K

R622 120K

R621 150K

R624 150K

R620

120K

R612 56K

R611 56K

R610 150K

R609 56K

R608 56K

R607 56K

C610 56P

C609 56P

C612 15P

C611 39P

C614 47P

C613 47P

R627

470K

C616

50V0.47

N

D601

SB360L6508

D602

SB360L6508

D754

RL1N4003N02

C761

0.1

D701

1N5402BM21 C709

0.1

IC601

RSN311W64B

POWER AMP

D757

MA700ATA

123456789101112131415181920212223242526 1617

R604

3.3K

R601

3.3K

R602

3.3K

R618

4.7K

Q601,602

2SC5398RSTA

PROTECTOR

D607

1SS291TA

L

K

D658

MA165TA

D657

MA165TA

B

A

R685

1K

R686

1K

Q607, 608

2SD2144STA

MUTING

Q607

Q608

C705

0.01

G

R776

10K

Q709

2SD2144STA

SWITCHING

(POWER)

R738

3.9K

R739

47K

C622

10V100

D659

MA165TA

D751

1N5402BM21

D703

1N5402BM21

D753

RL1N4003N02

D761

RL1N4003N02

D755

RL1N4003N02

D752

1N5402BM21

D702

1N5402BM21

D704

1N5402BM21

G

F

E

D

AB C

D558

MA165TA

R544

10K

R572

15K

R648

120

C618

0.01

R635

2.2K

C619

0.1

Q503

2SC5398RSTA

SWITCHING

C704

35V4700

C702

35V4700

C703

35V4700

C701

35V4700

R761

220

R628

22K

R691

68

R647

270

R623

120K

CN781

F

C

A

B

D

E

Q551

2SA1995RSTA

SIGNAL LEVEL DET.

Q555

2SD2144STA

SIGNAL LEVEL DET.

Q702

2SB1548PQAU

REGULATOR

Q725

2SC5398RSTA

STABILIZER Q705

2SA1995RSTA

STABILIZER

Q701

2SD2374PQAU

REGULATOR

R556

100K

R557

10K

C721

10V100

D725

MA4082LTA

R729

220

C723

0.047

C639

1000P

C640

1000P

C641

1000P

C642

1000P

C732

0.022

C647

1000P

D738

MA165TA

D730

MA4091HTA

R768

100

R724

3.9K

C718

25V100

D723

MA4150HTA

R723

5.6K

C719

0.047

R725

10

C724

0.047

C710

0.047

R546

18K

R551

18K

R552

47K

R555

22K

C550

0.01

D552

MA165TA D555

MA4100MTA

R547

18K

E602

E601

R749

1K

D739

MA165TA

POWER SUPPLY CIRCUIT

C

11032 4 5 6 7 8 9

W701B

11032 4 5 6 7 8 9

R720

3.9K

C734

50V3.3

D758

MA165TA

C722

25V100

C720

0.047

C717

16V33

MAIN CIRCUIT

B

G

R765

220

N

R569

10K

D554

MA165TA

C371

6.3V100

Q556

2SC5398RSTA

SWITCHING

R568

100

D553

MA700ATA

C556

16V10

C555

16V10

Q557

2SA1995RSTA

MOTOR DRIVE

Q553

2SD2144STA

MOTOR DRIVE

R570

2.2M

R560

100K

C559

0.01

D581

RL1N4003N02

R567

22

FAN MOTOR

JK551

R566

68K

Q554

2SA1995RSTA

SIGNAL LEVEL DET.

M

R719

3.3K

Q703,704

2SD2137PQTA

REGULATOR

R796

2.2

Q703

Q704

R769

27

R727

3.9K

C554

16V220

R561

100K

C552

0.01 R559

4.7K

R591

4.7K

C551

50V2.2

D551

MA165TA

12

D583

RL1N4003N02

N

R721

4.7

R722

2.2

AB

R753

0.47

R754

0.47

Q711,712

2SB1548PQAU

REGULATOR

Q711

R797

2.2 R767

27

R558

2.2K

D582

RL1N4003N02

Q712

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

7.6V

-

10.4V

0V0V59.5V

-

59.5V

0V28.9V

-

29.3V

0V0V0V0V

-

0.2V

29.4V

-

29.7V

0V0V54.1V

-

51.4V

0V0V0V0V

0V

5.1V5.1V

0V 0V

0.7V

0V 0V

2.1V

14.7V

0.7V

0V

0.7V

0V

29.2V

29.2V14.7V

15.2V

-

30.1V

-

11V

-

10.4V

-

11V

-

0.6V

14.1V

13.6V

9.6V

10.2V

10.4V

-

10.4V

14.7V

7.6V

7V

0V

7.6V

0.3V

-

10.4V

-

10.4V

-

10.4V

7.6V

6.8V

FAN ON:1.6V

0V

FAN ON:0V

0.5V

FAN ON:0V4.7V

0V

0.5V

8.1V

30.1V

30.1V7.6V

7.6V

0V

10.4V

13.6V

10.4V 14.1V

13.6V

A

B

C

D

E

F

G

H

37 38 39 40 41 42 43 44 45 46 47 48

SA-DV280(EB,EG) MAIN, AC IN, POWER TRANSFORMER(A),(B) CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-4

L601

2

1

3

4

5

6

7

8

9

10

11

12

2

1

3

4

5

6

7

8

R639

10

C621

0.1

E

F

D

CP601

CP602

R641

10

A

B

IJ

C

C631

0.1

G

Lch

JK601

HF(6 )

LF(8 )

Rch

JK602

HF(6 )

LF(8 )

A

B

C

R651

10

C627

0.1

C629

0.1

C635

0.047

R649

10

L605

R642

10

C620

0.1

C630

0.1

R640

10

L602

C637

0.047

C636

0.047

R652

10

C626

0.1

C628

0.1

R650

10

L606

C632

0.047

SPEAKERS

GND

C OUT

GND

SUR L OUT

SUR R OUT

ECO

SH SYNC

SA SYNC

D.GND

BU5V

RS13V

+B

NC

W722A

W721A

2

1

3

4

5

6

7

8

9

10

2

1

3

4

E

F

H

D

C

G

F

E

D

S1

S2

S3

S4

AC1

CT

AC2

S7

FL2

FL1

S1

S2

S3

S4

MAIN CIRCUIT

B

C

A

D

B

T701

CN701

CN702

CN703

CN704

CN705

CN706

CN707

CN708

CN709

CN710

R793

1

CN601

C652

1000P

C644

1000P

C643

1000P

C651

0.047

C646

0.047

C645

0.047

Rch

Lch

AC IN

JK701

L701

F1 T2A

T702

Z701

C791

1000P

3 1

24 RL702

R794

47K

Q791

2SD2144STA

RELAY DRIVE

D745

MA4051MTA

C753

0.01

C755

16V1000

Q726

2SC3940AQSTA

REGULATOR D746

RL1N4003N02

D747

MA4068LTA C758

0.01

C759

10V47

C754

0.01

D500

MA165TA

W2/W3

W1

CN602

FP791

K5G502AA0002

JK603

CENTER(8 )

SURROUND(8 )

R646

10

C624

0.1

C634

0.1

R644

10

L604

R645

10

C625

0.1 C633

0.1

R643

10

L603

DAC IN CIRCUIT

2

1

3

4

5

6

7

8

9

10

11

12

2

1

3

4

5

6

7

8

R777

1K

R774

18

D711

RL1N4003N02 R773

18

R712 2.2K

A

B

C

A

C

B

R795

3.9K

D743

RL1N4003N02

D741

RL1N4003N02

D742

RL1N4003N02

D744

RL1N4003N02

R771

2.2K D740

MA165TA

POWER TRANSFORMER

(B) CIRCUIT

F

POWER TRANSFORMER

(A) CIRCUIT

E

W722B

W721B

10

2

1

3

4

5

6

7

8

9

CN713

CN712

CN711 W1

W3

W2

2

1

3

4

R772

22K

A

B

C

D

FP792

K5G502AA0002

SPEAKERS

GND

C OUT

GND

SUR L IN

SURRIN

ECO

SH SYNC

SA SYNC

D.GND

BU5V

RS13V

+B

NC

S1

S2

S3

S4

AC1

CT

AC2

S7

FL2

FL1

S1

S2

S3

S4

R798

2.2

For [EB] area.

For [EG] area.

230-240V 50Hz [EB]

230V 50Hz [EG]

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

0.7V

0V

6V

10.7V6V

6.7V

AC22.6V

AC11.7V

AC4.7V

AC

29.2V

AC9.4V

A

B

C

D

E

F

G

H

37 38 39 40 41 42 43 44 45 46 47 48

SA-DV280(EB,EG) MAIN, AC IN, POWER TRANSFORMER(A),(B) CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-4

L601

2

1

3

4

5

6

7

8

9

10

11

12

2

1

3

4

5

6

7

8

R639

10

C621

0.1

E

F

D

CP601

CP602

R641

10

A

B

IJ

C

C631

0.1

G

Lch

JK601

HF(6 )

LF(8 )

Rch

JK602

HF(6 )

LF(8 )

A

B

C

R651

10

C627

0.1

C629

0.1

C635

0.047

R649

10

L605

R642

10

C620

0.1

C630

0.1

R640

10

L602

C637

0.047

C636

0.047

R652

10

C626

0.1

C628

0.1

R650

10

L606

C632

0.047

SPEAKERS

GND

C OUT

GND

SUR L OUT

SUR R OUT

ECO

SH SYNC

SA SYNC

D.GND

BU5V

RS13V

+B

NC

W722A

W721A

2

1

3

4

5

6

7

8

9

10

2

1

3

4

E

F

H

D

C

G

F

E

D

S1

S2

S3

S4

AC1

CT

AC2

S7

FL2

FL1

S1

S2

S3

S4

MAIN CIRCUIT

B

C

A

D

B

T701

CN701

CN702

CN703

CN704

CN705

CN706

CN707

CN708

CN709

CN710

R793

1

CN601

C652

1000P

C644

1000P

C643

1000P

C651

0.047

C646

0.047

C645

0.047

Rch

Lch

AC IN

JK701

L701

F1 T2A

T702

Z701

C791

1000P

3 1

24 RL702

R794

47K

Q791

2SD2144STA

RELAY DRIVE

D745

MA4051MTA

C753

0.01

C755

16V1000

Q726

2SC3940AQSTA

REGULATOR D746

RL1N4003N02

D747

MA4068LTA C758

0.01

C759

10V47

C754

0.01

D500

MA165TA

W2/W3

W1

CN602

FP791

K5G502AA0002

JK603

CENTER(8 )

SURROUND(8 )

R646

10

C624

0.1

C634

0.1

R644

10

L604

R645

10

C625

0.1 C633

0.1

R643

10

L603

DAC IN CIRCUIT

2

1

3

4

5

6

7

8

9

10

11

12

2

1

3

4

5

6

7

8

R777

1K

R774

18

D711

RL1N4003N02 R773

18

R712 2.2K

A

B

C

A

C

B

R795

3.9K

D743

RL1N4003N02

D741

RL1N4003N02

D742

RL1N4003N02

D744

RL1N4003N02

R771

2.2K D740

MA165TA

POWER TRANSFORMER

(B) CIRCUIT

F

POWER TRANSFORMER

(A) CIRCUIT

E

W722B

W721B

10

2

1

3

4

5

6

7

8

9

CN713

CN712

CN711 W1

W3

W2

2

1

3

4

R772

22K

A

B

C

D

FP792

K5G502AA0002

SPEAKERS

GND

C OUT

GND

SUR L IN

SURRIN

ECO

SH SYNC

SA SYNC

D.GND

BU5V

RS13V

+B

NC

S1

S2

S3

S4

AC1

CT

AC2

S7

FL2

FL1

S1

S2

S3

S4

R798

2.2

For [EB] area.

For [EG] area.

230-240V 50Hz [EB]

230V 50Hz [EG]

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE :AUDIO SIGNAL LINE

0.7V

0V

6V

10.7V6V

6.7V

AC22.6V

AC11.7V

AC4.7V

AC

29.2V

AC9.4V

A

B

C

D

E

F

G

H

123456789101112

SA-DV280(EB,EG) TUNER UNIT CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-5

C

B

24 23 22 21 20 19 18 17 16 15 14 13

1 2 3 4 5 6 7 8 9 10 11 12

FM IF IN

AM MIX OUT

REG

AM IF IN

GND

SD

ST

FM DET

Vcc

STRQ

FM/AM

MONO

AM OSC OUT

AM OSC

AFC

AM RF IN

AGC

AM OUT

DET OUT

PILOT IN

MPX IN

PILOT OUT

Rch OUT

Lch OUT

BADFC E

470

2.7K1

68

0.1

1000P

470

0.01

5 ~ 150

AB

1

22

100

0.018

11K

100K

4700P

B

A

4700P

100K

1K1

0.018

1000P ~ 0.01

150P

68K 0.1

1022K4.7

4.7

47K

1000P

3.3

A

D

B

C

10K

0.01

330

1000P

LA1833MN

FM/AM IF AMP,

DET/AM OSC,MIX/FM MPX

A

B

A

D

A

2SC2712

SWITCHING

3.3K

2SC2413

FM IF AMP

2SC2413

FM IF AMP

330

11 13 245678910

1K ~ 10K

470

4.7K ~ 22K

0.022

0.1

DTA114

POWER SUPPLY

(FM:ON)

1K ~ 10K

100P ~ 1000P

0.01 ~ 0.068 10K ~ 100K

1K ~ 10K

270 ~ 680

270K ~ 680K 10P ~

39P 270K ~

680K

CL

DO

DI

Lch OUT

CE

Rch OUT

DET

+B(2)

SD

+B(1)

T.GND

To MAIN CIRCUIT(CP101)

on SCHEMATIC DIAGRAM-2/19-A

B

1

0.47

1 2 3 4 5 6 7 8 9 10

20 19 18 17 16 15 14 13 12 11

XIN

CE

DI

CL

DO

B01

B02

B03

B04

I01 IF IN

I02

AM IN

FM IN

VDD

PD

AIN

A OUT

Vss

X OUT

10K

0.047

100K

5 ~12P

1000P

A

B

C

D

0.58 H

390

220

27K

100P0.01

560

1K

4.7

DZS5.1B

10K

27P~ 33P

27P

7.2MHz

22K~100K

100

1000P

10K

1K

3.3K

10K

1K

470

ABCD

22

5.6K

0.01

A

B

C

D

E

F

LC72131M

PLL FREQUENCY

SYNTHESIZER

AM ANT

EXT

LOOP

FM ANT

(75 )

100

0.01

100

2SC2413

BUFFER AMP

2SK360

FM OSC

2SK360

RF AMP

22P 15P

22P0.022

2.7K47P

33K

100K

2P

8P

10K 10K 33K

33K

100K

0.022

100

27P

2P

4P

10K

220

0.022

150

5P

18P

27P

2SC2059

FM MIXER

0.47 H

10P ~ 33P

330P ~

580P

1P ~ 5P

680 ~

2.2K

0 ~ 220

1 H

820K ~ 2.2M

0.022

680

1000P

330

1P ~ 5P

6P ~ 10P

6 ~ 220

5P

5P ~ 12P

0~5P

100K

Z101 TUNER UNIT(RAN0005EM-2) :POSITIVE VOLTAGE LINE

:FM SIGNAL LINE

:FM OSC SIGNAL LINE

:AM SIGNAL LINE

:AM OSC SIGNAL LINE

A

B

C

D

E

F

G

H

123456789101112

SA-DV280(EB,EG) TUNER UNIT CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-5

C

B

24 23 22 21 20 19 18 17 16 15 14 13

1 2 3 4 5 6 7 8 9 10 11 12

FM IF IN

AM MIX OUT

REG

AM IF IN

GND

SD

ST

FM DET

Vcc

STRQ

FM/AM

MONO

AM OSC OUT

AM OSC

AFC

AM RF IN

AGC

AM OUT

DET OUT

PILOT IN

MPX IN

PILOT OUT

Rch OUT

Lch OUT

BADFC E

470

2.7K1

68

0.1

1000P

470

0.01

5 ~ 150

AB

1

22

100

0.018

11K

100K

4700P

B

A

4700P

100K

1K1

0.018

1000P ~ 0.01

150P

68K 0.1

1022K4.7

4.7

47K

1000P

3.3

A

D

B

C

10K

0.01

330

1000P

LA1833MN

FM/AM IF AMP,

DET/AM OSC,MIX/FM MPX

A

B

A

D

A

2SC2712

SWITCHING

3.3K

2SC2413

FM IF AMP

2SC2413

FM IF AMP

330

11 13 245678910

1K ~ 10K

470

4.7K ~ 22K

0.022

0.1

DTA114

POWER SUPPLY

(FM:ON)

1K ~ 10K

100P ~ 1000P

0.01 ~ 0.068 10K ~ 100K

1K ~ 10K

270 ~ 680

270K ~ 680K 10P ~

39P 270K ~

680K

CL

DO

DI

Lch OUT

CE

Rch OUT

DET

+B(2)

SD

+B(1)

T.GND

To MAIN CIRCUIT(CP101)

on SCHEMATIC DIAGRAM-2/19-A

B

1

0.47

1 2 3 4 5 6 7 8 9 10

20 19 18 17 16 15 14 13 12 11

XIN

CE

DI

CL

DO

B01

B02

B03

B04

I01 IF IN

I02

AM IN

FM IN

VDD

PD

AIN

A OUT

Vss

X OUT

10K

0.047

100K

5 ~12P

1000P

A

B

C

D

0.58 H

390

220

27K

100P0.01

560

1K

4.7

DZS5.1B

10K

27P~ 33P

27P

7.2MHz

22K~100K

100

1000P

10K

1K

3.3K

10K

1K

470

ABCD

22

5.6K

0.01

A

B

C

D

E

F

LC72131M

PLL FREQUENCY

SYNTHESIZER

AM ANT

EXT

LOOP

FM ANT

(75 )

100

0.01

100

2SC2413

BUFFER AMP

2SK360

FM OSC

2SK360

RF AMP

22P 15P

22P0.022

2.7K47P

33K

100K

2P

8P

10K 10K 33K

33K

100K

0.022

100

27P

2P

4P

10K

220

0.022

150

5P

18P

27P

2SC2059

FM MIXER

0.47 H

10P ~ 33P

330P ~

580P

1P ~ 5P

680 ~

2.2K

0 ~ 220

1 H

820K ~ 2.2M

0.022

680

1000P

330

1P ~ 5P

6P ~ 10P

6 ~ 220

5P

5P ~ 12P

0~5P

100K

Z101 TUNER UNIT(RAN0005EM-2) :POSITIVE VOLTAGE LINE

:FM SIGNAL LINE

:FM OSC SIGNAL LINE

:AM SIGNAL LINE

:AM OSC SIGNAL LINE

BU4053BCFE2

C1BB00000527 C2BBFD000317 RSN311W64B UN411FTA

UN4211TA

UN4212TA

2SB1417PQTA

2SD2137PQTA 2SD2144STA

2SA1995RSTA

2SC5398RSTA 2SC3940AQSTA 2SB1548PQAU

2SD2374PQAU 1SS291TA

MA700ATA MA4100MTA

MA4150HTA

MA4300MTA

MA165TA

SB360L6508 1N5402BM21

RL1N4003N02 MA4030MTA

MA4051MTA

MA4056MTA

MA4068LTA

MA4075MTA

MA4082LTA

MA4091HTA

LNJ301MPUJAD SELS5223C

SELS5923C

1

8

9

16

.

50

51

1

............30

31

100

..

.

..

.

80

81 1

..................

26

ECB

CB

E

C

B

E

C

BECB

C

B

EA

Ca

A

Ca

A

Ca

Anode

Cathode

A

Ca

Anode

Cathode

A

Ca

A

Ca

A

Ca

Anode

Cathode

Anode

Cathode

Anode

Cathode

A

Ca

Anode

Cathode

Anode

Cathode

BMAIN P.C.B.

AOPERATION P.C.B.

W902B

14

.

2

15

.

1

W901B

14

.

2

15

.

1

W902A 1 . . . . . . 15

2 . . . . . 14

1. . . . . . . .10

CN781

2 . . . . . 14

1 . . . . . . 15

W901A

2 . . . . . . . . 20

1 . . . . . . . . 19

W501

To SOUND PROCESSOR

1 . . 4

W722A

1. . . . . . . .10

W721A

12

.

1

CP601

8

.

1

CP602

SPEAKERS

CPOWER SUPPLY P.C.B.

W701B

1. . . . . . . .10

T702

(Power

transformer)

DAC IN P.C.B.

W1

W2/W3

1

.

8

CN602

1

.

12

CN601

AC IN

CENTER/

SURROUND

SPEAKERS

EPOWER

TRANSFORMER

(A) P.C.B.

1 . . 4

W722B

1. . . . . . . .10

T701

(Power transformer)

W721B

W3

W2

W1

For [EG]

area.

For [EB]

area.

FPOWER

TRANSFORMER

(B) P.C.B.

1

.

11

CP101

Z101

TUNER

UNIT

BROWN

BLUE

JK551

2

1

FAN MOTOR

2

1

Technics SADV 280 Schematics

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