Technics SADV-280 Schematic

-

Z101 TUNER UNIT (RAN0005EM-2)

FM ANT

+B(FM)

RF AMP

FM

MIXER

FM OSC

+B(FM)

+B(FM)

24

1

AM
OSC
OUT

FM IF
IN

BUFFER

BUFEER

Vcc

9

+B2

IFT

AMP

3

REG

ALC

LEVEL

FM IF

DET

AM

OSC

FM IF

AMP

CURVE

FM

DET

FMDET

AFC

S-

AM ANT

Q607

MUTING

MUTING

+B4

(Q608)

Q605

Q902

MUTING

CONT.

17

GND

5

IN

PILOT

AM
OSC
COIL

+B2

16

MPX

PHASE

DET

VCO

+B2

FM / AM I F AMP,

DET /AM OSC,
MIX / FM MPX

(LA1833MN)

FM:ON

15

IN

OUT

PILOT

FF

STEREO
SWITCH

FM/AM

12

13

DECODER

FFFF

MONO

Lch

ST

7

14

Rch

PILOT

CANCEL

PILOT

DET

Rch

SD

DET

TUNER L/C

TUNER Rch

ToSOUNDPROCESSOR

(SH-DV280)

BLOCK DIAGRAM

A.GND

Lch IN
Rch IN

+B(10V)

SUR L
SUR R

S.W
MIC

-B(-10V)
V.GND

D.GND

CE/REQ

CLK

DATA

CT.GND

SH FL1

SH FL2

SYNC

W501

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19

20

+B5

-B3

From POWER

Rch

Rch

Rch

TRANSFORMER

BU4053BCFE2

IC201

SIGNAL SELECTOR

+B4

-B3

13

14

2

8

16

7

X1

X0

Y0

G

SW CONT.

VDD
VSS

ABC

11 10 9

12

1

Y1

15

AM

ANT

COIL

+B(FM)

19202122 23

18

AM

IN

OSC

AM RF

AM

AM

RF

MIX

AMP

AM

IF

AM/FM

IF

BUFFER

TUNING

DRIVE

AM

MIX

OUT

2

AM
IFT

AGC

AGC

COMP

AM IF

IN

4

AM

AM

DET

SD

68 1110

OUT

DET

STRQ

OUT

PLL FREQUENCY

SYNTHESIZER

(LC72131M)

+B(FM)

Power

+B1

supply

(FM:ON)

18

AOUT

17

AIN

REFERENCE

DIVIDER

1/6,1/17 4BIT

12 BIT

PROGRAMMABLE

DIVIDER

DATA SHIFT

REGISTER LATCH

BO4

BO3

BO2

98710

1/2

XOUT

FM IN

AM IN

VDD

PHASE DET

CHARGE PUMP

SWALLOWCOUNTER

IO2

IO1

12

16

PD

IFIN

11

UNIVERSAL

COUNTER

Power

Vss

19

ON

RESET

15

XIN

CE

BO1

7.2MHz

1

20

14

13

2
3

DI

4

CL

5

D0

CE1

DATA1

CLK1

DATA IN

6

+B2

SHSYNC

97

9596

SH DI

LC72 CE

SH DO

LC72 DI/ST

SH CK

LC72 CK

345

CE1

CLK1

DATA IN

21

94

SH CS

SH REQ

6

6CH

ST/AV.

C2BBFD000317

SYSTEM CONTROL / FL DRIVE

SD

LC72 DO

2

100

DATA1

SD

IC901

93

MUTE3

SEL/

TUNER

10

MIC DET

25

+B8

SA-DV280(EB,EG) BLOCK DIAGRAM

DET

4,10

2

7

VDDA/D

VssA/D

MPX IN

TEST

+B2

3,11

REFERENCE

VOLTAGE

ANTIALIASING

FILTER

TEST

C1BB00000527

RDS SIGNAL DEMODULATOR

1

57kHz

BPF

(SCF)

56

SMOOTHING

FILTER

CLK(4.332MHz)

IC151

CINFLOUTVREF

VREF

OSC/DIVIDER

XOUTXIN

89

X151

(4.33MHz)

Q606

MUTING

PLL

(57kHz)

MODE

12 13

CLOCK
RECOVERY
(1187.5kHz)

DATA

DECODER

RDS-ID

DETECT/

RAM

RST

CLK

DATA

IDR

Q609

(Q610)

15
14

16

MUTING

+B5

Q612

MUTING

CONT.

26

(25)

RSN311W64B

19

(18)

23

22

24

13

IC601

POWER AMP

POWER CONTROL

CIRCUIT

POWER CONTROL/

PROTECTION CIRCUIT

GND

1621

1047

-B2

D602

-B1

20

3

6

15

1

(2)

5

11

(12)

8

9

14

D601

N

+B7

+B3

Q601,602

PRO-

TECTOR

Q551,554,

555

Q553,556,

557

-B3 +B4

SIGNAL

LEVEL DET.

MOTOR

DRIVE

Rch

D906

Q503,D558

SWITCH-

ING

D974

D907

PHONES

SURROUND

Ω

(8 )

CENTER

Ω

(8 )

SPEAKERS

HF

Ω

(6 )

LF

Ω

(8 )

M

FAN MOTOR

AC IN

POWER

VR901

(VOLUME)

24 23

VR JOGA

30~37

FL901

VR JOGB

1~8G

FL DISPLAY

38~45,
47~50
52~71,
73~78

16

P1~38

X901

(6MHz)

17

XC IN

D931,933

XC OUT

79

(32.7kHz)

13 14

REGIN0

X902

XIN

80

X OUT

REGIN1

Z901
(REMOTE
SENSOR)

D954

( PLAY/REC)

29

82

REMO-

CON

TIMER

S.WOOFER)

+B8

D951

(DIGITAL

DD3VDD4

V

46 72

+B8

88

POWER

POWER

1

86

CHECK

MUTE

15

Vss

-VP

26

51

-VP

HP SW

Vss2

89

SA-DV280(EB,EG) BLOCK DIAGRAM

SASYNC

+B8

98

E DET

VDD1

VDD2

90

18

+B9

KEY

KARAOKE

11

AC IN

RESET

12

Q901,

RESET

D904

28

27

RDS CLK

RDS DATA

S.W LED

83

D306

()

91

MUTE2

C2BBFD000317

SYSTEM CONTROL / FL DRIVE

STAND-BY

81

IC901

KEY

SWITCH

(S901~908,

910~915)

KEY TU

19 20

AC IN

-B1

-B3

-B2

+B7

+B3

+B4

+B2

+B1

+B5

-VP

Q723

REGULATOR

Q711,712,725
REGULATOR

/STABILIZER

D702,704,

752,754,755

Q703,704

REGULATOR

Q701

REGULATOR

Q702,705

REGULATOR
/STABILIZER

Q707

REGULATOR

D701,703,

751,753,761

D717~720

D705

T701

POWER TRANSFORMER

+B6

RL702

RELAY
DRIVE

Q791

Z701

NOTES : SIGNAL LINE

F1

L701

AC IN

: FM SIGNAL
: AM SIGNAL
: FM OSC SIGNAL
: AM OSC SIGNAL
:AUDIO SIGNAL

( ) indicates pin No. Right channel.

SHSYNC

POWER

SASYNC

+B6

+B8

+B9

D902

D901

Q726

REGULATOR

Q708,709

SWITCH-

ING

D740

D746

FL DISPLAY
(FL901)

D741~744

FL1

FL2

T702

POWER

TRANSFORMER

SA-DV280(EB,EG) BLOCK DIAGRAM

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

OPERATION P.C.B.

A

H

G

F

E

S915
(RDS
DISP MODE
PTY)

S914
(RDS
DISP MODE
PS)

S911

(TUNING )

S910

(TUNING )

J

R916

R913

R915

R914

J

S912

(TUNER/

R994

BAND)

R911

J

R940

R910

S908

R909

(INPUT

SELECTOR

D

R907

J

S907

(SET)

R906

J

S903

6

(FM AUTO/

MONO)

R905

J

C396

J

S905

(CLOCK/

TIMER)

C395

R904

R903

S902

C

S906

(TUNING

MODE)

(—DEMO)

B

JK903

(PHONES)

2

3

4

1

5

7

C923

W905

)

D904

J

C924

R902

J

R999

R976

Q901

B
C
E

J

J
J

R929

J

D905

C914

C916

C918

R928

D974

R946

R901

VR901

(VOLUME)

1

2
3

R930

R931

R932

R956

R987

R936

R935

J

R954

J
J

C901

100

C912

J

R952
C910

J

R944

C159

S904

( PLAY/

REC)

J

C905

1

C911

R921

C158

C157

C156

R926

L902

95

5

10

C925

R953

J

R918

R919

R934

R988

R937

R969

R958

C926

85

90

15

3
2
1

X902

J

R922

J

C917

(SENSOR)

3
2
1

X151

C915

R991

J

D906

81

20

X901

Z901

C154

R957

J

R959

R960

J

25

R925

910

D954

J

J

D961

R966

J

J

L901

IC901

30

J

R951

C908

R924

IC151

R157

REC)

( PLAY/

J

C902

Q902

E
C
B

J

C903

C921

R939
R986

J

80

75

R943

R945

C907

J

R961

R962

C151

15

R965

D151

158

16

R942

J
J

J

70

31

C155

N

R974

R993

65

35

J

R950

C919

C152

R941

R995

J

C928

D973

R990
R997

D933

60

40

C909

C904

J

L151

R158

J

J

C931

45

R949

C153

C160

J

J

R975

D931

55

D907

51

50

J

J

D901

C922

C927

R912

J

R996

FL901

W902B

15

14

J

13

12

11

S913

10

DIGITAL

9

8

S.WOOFER

7

6

5

4

3

2

D951

1

J

J

J

J

D902

W901B

C920

15

14

13

12

11

10

9

8

1

7

2

6

5

4

3

5

2

6

1
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

L153

34
35
36
37
38

J

39
40
41
42

J

43
44
45
46
47
48
49
50

53
54

L152

R151

R153

J

R155

R152

R154

To SOUND PROCESSOR

A

S901

( / )

D306

( )

(REP3337E-M)

MAIN P.C.B.

B

W902A

D607

J

CN781

14

10

12

9

10

R635

R719

8

8

7

6

6

J

5

4

4

2

3
2

J

1

J

J

C725

C664

J

Q723

14
12
10

8
6
4
2

J

J
J

C741

4
3
2
1

R764

R763

J

15
13
11

9
7
5
3
1

J

J

J

Q707

B
C
E

J

J

C731

J

J

C707

J

C761

J

J

R776

D717

D755

C702

C704

R708

E
C
B

D720

C714

D719

C740

C735

J

W501
19

17
15
13
11

J
J
J
J

R738

C708

20
18
16
14
12
10

9
7
5
3
1

J

8
6
4
2

C509

C706

ECB

ECB

R739

D703

J

D752

D702

J

Q609

ECB

ECB

Q610

J

R512

R510

J

J

D751

J

D701

J

J

J

J

R511

R509

C510

D721

J

J

J

Q708

Q709

C715

J

1234

J

J

J

R564

R693

R692
R597
R598

C602

J

J

D761

C703

J

C701

CP602

R563

J

J

J

R229

C656

J

J

C601

R204

C202

8

IC201

9

10

R202

Q704

J

Q703

D753

C629
C627

5678

J

J

R203

15

15

16

R205

D201

ECB

C723

J

C732

C626

C628

R651

CP101

J
J

C554

D583

Q554

C655

J

J

D552

J

R561

J

D757

Q555

R591

CB

E

C201

R559
R557

R211

C552

C724

D658

D756

Q551

R796

R797

R727

R729

ECB

J

Q503

J

R721

J

J

J

J

J

J

L606

R650

R649

R652

L605

J

J
J

1 2 3 4 5 6 8 910 1112

R570

B
C
E

R572
R544

R769

J

R558

E

Q556

D725

D558

J

R638

C709

Q553

D582

CB

D555

ECB

R569

C551

R556

C613

R608

C614

R555

B
C
E

R767

J

1234567891011

C559

ECB

D581

D554

C550

D551

R607

C721

C619

J

J

R722

J

J

J

J

J

CP601

7

R566

R560

C371

J

R623

C618

R637

J

Q557

R567

R622

R620
R546

R547

R624

C648

C617

J

C640

R568

ECB

JK551

12

E602

R552

R551

N

R648

E601

R642

J

C642

B
C
E

R621

C616
R627

J

C641

C660

C659

C612

R610

J

R619

J

D602
D601

C620

D553

C556

Q601

J

C622

Q602

R628

C647

R631

R615

R611

R691

J

R640

J

C630

B
C
E

C609

J

R647

J

C555

NN

NN

Q605

R688

Q607

R632

C611

J

J

L601

L602

C639

Q606

J

R604

R687

R614

J

R609

C605

C610

J

J

R639

J

C637

R601

C603

J

J

C606

R612

J

C632

C636

C635

E

E

C650

J

R605
R606
R617
R618

R684
R683

E
E

R603

R686
R685

CB

CB

R602

J

J

C621

CB
CB

C607

IC601

C604

C649

J

R641

JK602

JK601

Q608

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

C631

C608

(REP3337E-M)

LF

(8 )

HF

(6 )Ω

LF

(8 )

HF

(6 )Ω

SPEAKERS

Ω

Rch

Ω

Lch

D737

J

Q612
B
C
E

J

R695

J

C733

J

J

J

D657

J

C705
J
J

C737

D705

W721A

10

9
8
7
6
5
4
3
2
1

J

J

R230

J

W901A

D659

J

J

J

J

D718

W722A

D704

D754

J

J

15
13

J

11

9
7
5

J

3
1

J

R761

R694

D611

J

R696

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

123456789101112

13

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

H

POWER TRANSFORMER

E

(A) P.C.B.

POWER TRANSFORMER

F

AC IN P.C.B.

D

RL702

4

3

G

2

1

C791

F

E

F1 T2A

FC1 FC2

L701

JK701

W1

W2/W3

Z701

D

T702(Power transformer)

C644

C651

C646

C652

JK603

C
SR

SL

C753

J

L604

C625

C643

J

C755

C633

C645

D743

R643

Q791

C754
C758

J

R646

R644

R645

R794

ECB

D500

R777

J

D741

D742

C624

L603

R773

R774

Q726

ECB

J

D744

J

C634

R795
D740

J

D745

R771

D711

R772

R712

C759

D746

CN602

1
2
3

J

4
5

J

6
7

D747

8

CN601

1
2
3
4
5
6
7
8

9
10
11
12

REP3338A-S . . . [EG]
REP3338B-S . . . [EB]

W721B

10

R793

1
2
3
4
5
6
7
8
9

R798

W722B

1
2
3
4

FP791

FP792

J

(REP3337E-M)

CN701

CN702

CN703

CN704

CN705

CN706

CN707

CN708

CN709

CN710

AC IN

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

CENTER/
SURROUND
SPEAKERS

C

B

T701(Power transformer)

POWER SUPPLY P.C.B.

C

R725
R723

Q705

ECB

R724

D739

D738

B
C
E

D730
D758

C718

C722

R749

C717

R768

R765

W701B

C710

R720

C734

R753

R754

D723

10

9
8
7
6
5
4
3
2
1

Q701

Q702

Q711

Q712

B
C

C719

E

B
C
E

C720

B
C

Q725

E

J

B
C
E

(B) P.C.B.

CN711

CN713

W2

J

W3

CN712

J

REP3338A-S . . . [EG]
REP3338B-S . . . [EB]

J

W1

J

J

J

(REP3337E-M)

A

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

123456789101112

13

SCHEMATIC DIAGRAM-1

OPERATION CIRCUIT

A

H

G

F

E

D

C

B

150

R997

R996

150

D973

MA4030MTA

C921

1000P

JK903
PHONES

3.5mm STEREO

FL901 (A2BB00000084)

C922

35V33

W905

1 6 8 10 11 1213 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

C920

25V22

C928

25V22

S913

(DIGITAL

)

S.WOOFER

2
3
6
4
5
7
1

C923

NOTE:
The number which noted at the connectors onthe schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located onthe left corner in the schematicdiagram.

FL DISPLAY

ABCDEFGHIJKLMNOPQRSTUVWXYZ

R912

4.7K

0.1

S908

S912

)

INPUT SELECTOR

(

(TUNER/ BAND)

C396

0.047

R907

3.3K

R911

3.3K

S907

S911

)
SET

(

)

TUNING,

(

C395

0.047

R906

2.2K

R910

2.2K

S906

S910

)

TUNING MODE

(

)

(TUNING,

R905

1.8K

R909

1.8K

S905

)

FM AUTO/MONO

(

R904

1.5K

S904

R916

1.5K

)

PLAY/ REC

(

ABCDEFGHI JKLMNOPQRSTU

R922

R921

10K

10K

R925

1K

R924

1K

C908

C907

C904

470P

470P

0.01

R944

C924

2.2K

0.1

R903

R9021KR901

1.2K

)

S903

DEMO
(-

R915

R9141KR913

1.2K

S

T

820

)

S902

CLOCK/ TIMER

(

820

)
PTY

S915

(

(RDS DISP MODE)

D974

MA165TA

S901

S914

)
/

(

)
PS

(

X

W

V

C919

C927

25V22

25V22

:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE : NEGATIVEVOLTAGELINE

A
B

-

30.1V

-

30.1V
51

-

R990

100K

D306

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

1.5K

R939

( )

SELS5223C

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

D954

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

D931

MA165TA

D933 MA165TA

100K

R993

C916

6.3V100

C

ABCDEFGH I J K LMNOPQRST UVWX

23.4V-20.5V-26.3V-26.3V

-

P12

-

VP
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
V

DD4

P33
P34
P35
P36
P37
P38
REGIN0
REGIN1

STAND-BY

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

1.5K

R986

)

D951

PLAY/ REC

SELS5923C

LNJ301MPUJAD

(

5.1V

P11

P10

FM / AM

T 5.5ms.

F=32.7kHz

TIMER

S.W.LED

0V0V0V

220

R995

)

R994 100K

S.WOOFER

(DIGITAL

R999

23.4V-20.5V-26.2V

-

5.1V

P8P7P6P5P4P3P2

P9

DD3

V

IC901
C2BBFD000317

SYSTEM CONTROL/
FL DRIVE

FM / AM

2V
P-P

2V/2ms.DIV.

T

10ms.

LOUNGE

CHORUS

MUTENCPOWER

0V0V0V

4.8V

100K

R960 1.5K

R959 47

R958 1K

26.2V-26.2V-26.1V-26.3V-23.5V-23.5V

29.2V

-

-

FM / AM

4V
0V

-

30V

F=6MHz

FM / AM

F=32.7kHz

5V

0V

5V

0V

DD2

MUTE2NCMUTE3

Vss2

V

5.1V

5.1V

C905

1000P

2.7K

R969

23.5V

-

P1

1G2G3G4G5G6G7G

FM / AM

T 5.5ms.

FM / AM

F=6MHz

3.3V
P-P

5.2V
P-P

FM / AM

5.2V
P-P

F=32.7kHz

2V/2ms.DIV.

SHCS

SHDO

SHDI

0V

1.9V

1.4V

1.9V

R935 100

100

R936

27.5V-25.5V

-

4V
0V

-

30V

4.2V
P-P

KEY KARAOKE

SEL/ TUNER

5V

0V

SHCK

E DET

CR TIMER

5.1V

3.3V

R988 1K

R937 10K

R934 100

25.6V-27.5V

­3132333435363738394041424344454647484950

REMOCON

RDS DATA

RDS CLK

HP SW

MIC DET
VR JOGA
VR JOGB
NC(GND)

SH REQ

KEY TU

V

XC OUT

XC IN

X OUT

XIN

RESET

AC IN

SEL TUNER

ST/ AV.6CH

LC72 CK

LC72 DI/ ST

LC72 CE

LC72 DO

CHECK

SD

100

0V

C901

R987 1K

8G

DD1

Vss

6.3V100

30
29
28
27
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

R926

2.2K

R919

15K

R991

47K

-

25.6V

5.1V

2.6V

2.6V

0.6V

5.1V
0V
0V

1.4V

5.1V

5.1V

5.1V

2.3V

2.3V

2.7V

1.6V
5V

2.2V
0V

5.1V

5.1V

4.6V
0V
0V

2.5V

R976

100K

R918 10K

C903

R953 100

D905 1SS291TA

R928 47K

L902 1 H

0.01

R954
100K

4.7K

R949

100

R950

0.1

C912

18P

C911

C926

1000P

D902

1SS291TA

5V

A
B
C

D
E

R952

10M

X902

(32.7kHz)

5.1V

Q901
UN4212TA

RESET

C925

R9561KR957

C915

R940

R929 1K
R930 1K
R932 1K
R931 1K

X901

(6MHz)

1

3

330K

R951

20P

C910

0V

1000P

0.01

1K

D901

1SS291TA

C914

D904

1K

2

50V2.2

MA165TA

L901

10 H

C902

10V1000

U
J

H

G
A
B
D
C

EFIKLMNO Q

A

SA-DV280(EB,EG) OPERATIONCIRCUIT DIAGRAM

123456789101112

SCHEMATIC DIAGRAM-2

OPERATION CIRCUIT

A

5.1V
EVQVBXFK124B

(VOLUME)

COM

1 2 3

C151

16V10

C158

6.3V47

560P

C154

47P

C157

VR901

BA

IC151
C1BB00000527

RDS SIGNAL
DEMODULATOR

2.5V
VREF

1

2.5V
HPX IN

2

5.1V
V

3

VssA

4

2.5V
FL OUT

5

2.5V
CIN

6

TEST

7

X OUT

8 9

22K

R962

100

R945

DEA

DDA

X151

C152
330P

: NEGATIVEVOLTAGELINE
: POSITIVE VOLTAGE LINE

0.01

C917

C918

6.3V100

22K

R961

C909

100

R943

RDCL

RDDA

MODE

V

VssB

IDR

RST

DDB

XIN

1000P

16

2.6V

15

2.6V

14

0V

13

1K

R157

12

5.1V

11

10

2.5V2.7V

47P

C156

R151

R153

C155

R946

1K

1K

100K

1000P

1K

R152

100K

R154

C153

1000P

L151

100 H

R158

1K

BC

: FM SIGNAL LINE
: AM SIGNAL LINE

Z901
B3RAD0000028

(REMOTE SENSOR)

3

2

1

C159

C160

6.3V47

1000P

L152

MAIN CIRCUIT

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

T.GND

+B(1)

+B(2)

DET

Rch IN

Lch IN

B

H

W501
1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

1
2
3

SD

4
5
6
7

CE

8
9

DI

10

DO

11

CL

R51147R509

R512 47R510 47

W902A

W901A

6V

7.2V

CP101

R230 1K

R229 1K

47

10.4V

G
A

B

A
B
C
D

B
E
F
G

C
D
E
F
G

E
F

J

K

L
M

I

A

B

C

G

B
F
A
E
D
C

Q707
2SB1417PQTA

REGULATOR

-

30.1V

C708

0.047

C735

0.047

R597

2.2K

R598

2.2K

R211

270

-

37.3V

-

30.7V

C707

0.047

C706

35V10

Q723
2SC3940AQSTA

REGULATOR

14.7V7.2V

7.8V
C733

C740

16V10

D201

0.047

R563

MA4056MTA

R708

D721

R764

2.7K

MA4300MTA

330

4.7K

D737

2.7K

R564

0.1

C201

C737

50V100

R763

4.7K

MA4082LTA

7.6V

-

10.4V

C659

16V10

C660

16V10

R615

1 2 3 4 5 6 7 8

15

16

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

100K

R205

H
G

C

B

D

A

Q605,606
2SD2144STA

MUTING

4.7K

F

E

R631

3.9K

R632

3.9K

4.7K

R614

100K

R203

0V 0V-10.4V

14

13

C601

100K

R202

0.7V

Q605

1K

R683

1K

R684

Q609,610
2SD2144STA

A

B

C

MUTING

0V

0.01

C509

0V

0.01

C510

D705

RL1N4003N02

D718

RL1N4003N02

D717

RL1N4003N02

C731

1000P

D720

RL1N4003N02

D719

RL1N4003N02

A
B

C202

0.1

100K

R204

Vss

INHZ0Z1Y1 Y0

IC201
BU4053BCFE2

SIGNAL SELECTOR

B

A

X0X1VDD

12 11 10 9

16V10

4.7K

R617

C656

16V10

C655

16V10

C602

16V10

R695

470

0V

0V

-

10V

Q606

Q609

Q610

-

-

C741

10V

10V

0.1

R696

R693

1K

R692

1K

C714

47K

1000P

Q612
UN411FTA

MUTING CONT.

R603

3.3K

4.9V

R694

22K

G

C

R605

D611

MA4051MTA

4.7K

H
A

D

C

R687

1.5K

R606

C664

C725

4.7K

5.1V

-

16V10

16V47

R688

1.5K

10.2V

:AUDIO SIGNAL LINE

TUNER Lch/C

TUNER Rch

R941

1K

Q902
UN411FTA

MUTING CONT.

3.3V

2.2K

R942

M
A

B
C
D
E
F
G
H

I
J
K
L

U
N
O

Q

S

T

100 H

3.3V

0V

D906

MA165TA

D907

MA165TA

6V

R974

1K

C931

16V10

D961

N

R975

MA4075MTA

22K

R966

3.9K

7.6V

R965

3.9K

L153

R155

D151

MA4051MTA

ABC

-30.1V

1 H

120

W902B

W901B

To
SOUND
PROCESSOR
(SH-DV280)

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

ToTUNER UINT
on SCHEMATIC
DIAGRAM-5/11,12-A

C715

25V6800

14.7V

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

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

SCHEMATIC DIAGRAM-3

MAIN CIRCUIT

B

IC601

D756

0V

MA700ATA

D757

C648

1000P

B

A

R602

3.3K

0V

0.7V

Q608

RSN311W64B

POWER AMP

MA700ATA

C603 470P

C604 470P

R601

3.3K
R604

3.3K

4.7K

R618

R685

1K

0.7V

Q607

R686

1K

Q607, 608
2SD2144STA

MUTING

L
K

M

G

C705

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

-

51.4V

0V0V0V0V

C607 470P

C608 470P

C649 1000P

0.01

C617

0.01

C618

Q708
UN4211TA

SWITCHING
(POWER)

2.1V

0.01

AB C

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE :AUDIO SIGNAL LINE

7.6V

-

10.4V

-

0.2V

29.4V

-

29.7V

R612 56K
C610 56P
R611 56K
C609 56P

R610 150K
C612 15P
R609 56K
C611 39P
R608 56K
C614 47P
R607 56K
C613 47P

22K

R628

R648

120

R647

270

0.7V

47K

R739

C622

10V100

R572

470K

R627

C616

50V0.47

R620
120K

R619 120K

R622 120K

R621 150K

R624 150K

0V

Q601 Q602

Q601,602
2SC5398RSTA

PROTECTOR

R544

10K

15K

D754

RL1N4003N02

D755

RL1N4003N02

14.7V

R623
120K

C650 1000P

R691

68

R738

3.9K

Q709
2SD2144STA

SWITCHING
(POWER)

0V 0V

10K

R776

C605 1000P

0V0V54.1V

C606 1000P

N

5.1V5.1V

0V

D558

MA165TA

Q503
2SC5398RSTA

SWITCHING

D704

1N5402BM21

C704

35V4700

C702

35V4700

0V

D753

RL1N4003N02

D761

RL1N4003N02

D702

0V0V0V0V

D607

1SS291TA

0V

15K

R637

D703

1N5402BM21

C703

35V4700

C701

35V4700

D752

1N5402BM21

-

29.3V

D602

SB360L6508

0.1

C619

D751

1N5402BM21

C761

1N5402BM21

R635

2.2K

0.1

D701

0V28.9V

D601

SB360L6508

68K

R638

0.1

C709

1N5402BM21

-

59.5V

FAN MOTOR

7.6V

Q556
2SC5398RSTA

SWITCHING

123456789101112131415181920212223242526 1617

0V0V59.5V

D658

MA165TA

D659

D657

MA165TA

MA165TA

C724

0.047

3.3K

R719

220

R761

G

AB

C639

F

E

D

1000P

C640

1000P

C641

1000P

C642

1000P

C732

0.022

C647

1000P

0V

R569

10K

R796

2.2

R797

2.2

0.5V

FAN ON:0V4.7V

D554

E601

E602

MA165TA

R557

D551

R547

8.1V

7.6V

10K

MA165TA

18K

C371

R570

6.3V100

2.2M

C552

R559

0.01

4.7K

-

10.4V

0.3V

Q551
2SA1995RSTA

SIGNAL LEVEL DET.

C551

50V2.2

18K

R546

Q704

30.1V7.6V

Q703,704
2SD2137PQTA

REGULATOR

Q703

30.1V

8.1V

C723

C721

10V100

D738

MA165TA

R556

R551

0.047

14.7V

-

10.4V

10.4V

D730

100K

18K

MA4091HTA

-

10.4V

100K

R560

7.6V

-

10.4V

R591

Q555

4.7K

2SD2144STA

SIGNAL LEVEL DET.

R555

47K

R552

R729

3.9K

R727

220

D725

MA4082LTA

Q711,712
2SB1548PQAU

REGULATOR

10.4V 14.1V

Q712

R768

D739

100

MA165TA

C734

D758

50V3.3

MA165TA

22K

13.6V

10.4V

10.2V

R769

27

CN781

W701B

Q711

9.6V

R765

D583

RL1N4003N02

D582

RL1N4003N02

R767

27

1

1

1K

R749

R754

0.47

R753

14.1V

13.6V

13.6V

Q725
2SC5398RSTA

STABILIZER

220

FAN ON:0V

Q557
2SA1995RSTA

MOTOR DRIVE

R558

2.2K

D552

MA165TA

R561
100K

0.47

0.5V

C554

16V220

0V

Q554
2SA1995RSTA

SIGNAL LEVEL DET.

D555

MA4100MTA

A

B

C

D

E

F

G

4.7

R721

1032 4 5 6 7 8 9

1032 4 5 6 7 8 9

3.9K

C722

R720

R566

68K

7.6V

0V

C720

29.2V

0.047

C559

0.01

0V

R724

C718

C556

16V10

D581

3.9K

25V100

N

R568

100

D553

MA700ATA

7V

0.01

C550

Q553
2SD2144STA

MOTOR DRIVE

POWER SUPPLY CIRCUIT

C

Q702
2SB1548PQAU

REGULATOR

-

30.1V

-

10.4V

-

11V

25V100

-

11V

-

0.6V

Q705
2SA1995RSTA

STABILIZER

JK551

7.6V

6.8V
FAN ON:1.6V

RL1N4003N02

R722

2.2

C710

0.047

Q701
2SD2374PQAU

REGULATOR

15.2V

C717

16V33

M

1

N

C555

16V10

22

R567

29.2V14.7V

C719

0.047

R725

10

D723

2

5.6K

R723

MA4150HTA

SA-DV280(EB,EG) MAIN,POWER SUPPLYCIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-4

MAIN CIRCUIT

B

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE :AUDIO SIGNAL LINE

L605
R649

B

C

A

D

F
E
G

A
B
C

10

L602

R640

10

L606

R650

10

L601

R639

10

R652

C626

C628

R641

C621

C631

10

C635

0.047

R651

0.1

C627

C637

0.047

0.1

C629

10

0.1

0.1

10

0.1

0.1

R642

C620

C630

C636

0.047

10

C632

0.047

0.1

0.1
CP601

10
11
12

CP602

IJ

JK601

JK602

GND

1

GND

2

C OUT

3

C OUT

4

GND

5

GND

6

GND

7

GND

8

SUR L OUT

9

SUR L OUT
SUR R OUT
SUR R OUT

ECO

1

SH SYNC

2

SA SYNC

3

D.GND

4

BU5V

5

RS13V

6

+B

7

NC

8

HF(6 )

LF(8

HF(6 )

LF(8

Lch

)

Rch

)

SPEAKERS

GND

GND
C OUT
C OUT

GND

GND

GND

GND

SUR L IN
SUR L IN
SURRIN
SURRIN

ECO
SH SYNC
SA SYNC

D.GND

BU5V

RS13V

NC

AC IN CIRCUIT

D

CN601

1
2
3
4
5
6
7
8

9
10
11
12

CN602

1

R712 2.2K

2

3

4

5

6

+B

7

8

C755

16V1000

A

B

C

Q726
2SC3940AQSTA

REGULATOR

0.01

C754

D711

RL1N4003N02

6.7V

C759

10V47

6V

10.7V6V

R773

18

C758

D747

0.01

MA4068LTA

R795

3.9K

D745

MA4051MTA

R774

18

D741

RL1N4003N02

D742

RL1N4003N02

R772

D746

RL1N4003N02

R777

1K

D743

RL1N4003N02

C753

0.01

D744

RL1N4003N02

22K

D500

A

C

B

D740

MA165TA

2.2K

R771

MA165TA

L603

R643

10

R645

C633

C625

Q791
2SD2144STA

RELAYDRIVE

0V

0.7V

T702

AC9.4V

RL702

24

3 1

JK603

CENTER(8 )

L604

R644

10

0.1

0.1

C651

0.047

C652

1000P

10

10

C646

0.047

C644

C645

0.047

C643

1000P

1000P

R646

C624

C634

0.1

0.1

Rch

SURROUND(8

Lch

SPEAKERS

)

H

G

F

47K

R794

F1 T2A

L701

JK701

E

AC IN

230-240V 50Hz [EB]

Z701

230V 50Hz [EG]

W2/W3

D

C791

1000P

W1

POWER TRANSFORMER

E

(A) CIRCUIT

R793

1

CN701

CN702

A

B

C

D

R798

2.2

CN703

CN704

CN705

CN706

CN707

CN708

CN709

CN710

AC

29.2V

AC22.6V

AC22.6V

AC11.7V

AC11.7V

AC4.7V

AC1

AC2

FL2
FL1

W722B

S1

1

S2

2

S3

3

S4

4

S1

1

S2

2

S3

3

S4

4
5

CT

6
7

S7

8
9

10

W721B

A
B
C
D

K5G502AA0002

K5G502AA0002

FP791

FP792

W722A

W721A

S1

1

S2

2

S3

3

S4

4

S1

1

S2

2

S3

3

S4

4

AC1

5

CT

6

AC2

7

S7

8

FL2

9

FL1

10

D
E
F
G

C

D
H
F
E

T701

POWER TRANSFORMER

F

(B) CIRCUIT

CN711 W1

CN712

CN713

For [EG] area.

W3

W2

For [EB] area.

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

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

C

B

A

SCHEMATIC DIAGRAM-5

Z101 TUNER UNIT(RAN0005EM-2)

:POSITIVE VOLTAGE LINE

:FM SIGNAL LINE
:FM OSC SIGNAL LINE

:AM SIGNAL LINE
:AM OSC SIGNAL LINE

100

10K

LA1833MN

FM/AM IF AMP,
DET/AM OSC,MIX/FM MPX

1K ~ 10K

22

0.022

0.01

270 ~ 680

3.3
1000P

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

AM OSC

AM OSC OUT

FM IF IN

AM MIX OUT

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

1

0.1

AFC

REG

1000P

270K ~ 680K

4.7

47K

AM RF IN

AM IF IN

0.01

2SC2413

FM IF AMP

AGC

GND

2SC2059

1 H

1000P

1000P

330

100

I01 IF IN

FM MIXER

680

820K ~ 2.2M

22K~100K

10K

10K

0.022

0 ~ 220

150

0.01

0.022

390

A

220

B

27K

C

100P0.01

D

E

F

100

100

A
D

B
C

4.7K ~ 22K

2.7K47P

5P ~ 12P

33K

2SK360

RF AMP

5P

100K

6 ~ 220

1P ~ 5P

0.022

2P

100

2SK360

FM OSC

100K

6P ~ 10P

4P

27P

1P ~ 5P

33K

33K

2SC2413

BUFFER AMP

8P

10K 10K

27P

2.2K

680 ~

2P

220

0.022
5P

18P

H

FM ANT

(75

)

22P 15P

100K

0~5P

22P0.022

G

F

A

AM ANT

EXT

LOOP

E

D

C

B

0.47 H

10K

0.47 H

5.6K

0.01

1000P

10P ~ 33P

330P ~

580P

27P

0.047

7.2MHz

100K

3.3K

10K

5 ~12P

22

10K

4.7

560

A OUT

DI

1K

AIN

CL

1K

27P~ 33P

20 19 18 17 16 15 14 13 12 11

Vss

X OUT

XIN

CE

1 2 3 4 5 6 7 8 9 10

1K

1K

ABCD

C

B

D

DZS5.1B

PD

VDD

LC72131M

PLL FREQUENCY
SYNTHESIZER

DO

B01

470

0.58

H

1000P

AM IN

B03

I02

B04

FM IN

B02

1K

A

330

10P ~

39P

100P ~ 1000P

0.01 ~ 0.068 10K~ 100K

AM OUT

DET OUT

ST

SD

470

470

AB

330

270K ~

680K

2SC2413

FM IF AMP

1022K4.7

1K ~ 10K

150P

PILOT IN

FM DET

5 ~ 150

1000P

DTA114

POWER SUPPLY
(FM:ON)

68K 0.1

0.018

1000P ~ 0.01

0.018

MPX IN

PILOT OUT

STRQ

Vcc

470

0.1

Rch OUT

FM/AM

Lch OUT

MONO

0.47

2.7K1

1

68

BADFC E

A

B

A
B
D
C

1K1

4700P

2SC2712

SWITCHING

DI

DO

B

Lch OUT

CE

100K

100K

Rch OUT

4700P

DET

+B(2)SD+B(1)

11K

3.3K

1K ~ 10K

11

CL

To MAIN CIRCUIT(CP101)
on SCHEMATICDIAGRAM-2/19-A

B

A

A

B

13 245678910

T.GND

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

123456789101112

SCHEMATIC DIAGRAM-1

OPERATION CIRCUIT

A

NOTE:
The number which noted at the connectors onthe schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located onthe left corner in the schematicdiagram.

H

G

R997

D973

C921

150

MA4030MTA

1000P

R996

150

F

E

D

FL901 (A2BB00000084)

C922

35V33

1 6 8 10 11 1213 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

C920

25V22

C928

25V22

)

S908

INPUT SELECTOR

(

R912

4.7K

)

S913

(DIGITAL

S.WOOFER

S912

(TUNER/ BAND)

R907

3.3K

R911

3.3K

S907

S911

)
SET

(

)

TUNING,

(

R906

2.2K

R910

2.2K

S906

S910

)

TUNING MODE

(

)

(TUNING,

R905

1.8K

R909

1.8K

S905

)

FM AUTO/MONO

(

R904

1.5K

S904

R916

1.5K

)

PLAY/ REC

(

FL DISPLAY

R903

1.2K

)

S903

DEMO
(-

R915

1.2K

ABCDEFGHI JKLMNOPQRSTU

ABCDEFGHIJKLMNOPQRSTUVWXYZ

R9021KR901

R9141KR913

820

)

S902

CLOCK/ TIMER

(

820

)
PTY

S915

(

(RDS DISP MODE)

S901

S914

)
/

(

)
PS

(

R922

R921

10K

10K

R925

1K

R924

1K

C908

C907

470P

470P

R944

2.2K

X

W

C919

C927

25V22

25V22

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

C

B

A

D974

MA165TA

C904

0.01

C924

V

0.1

JK903
PHONES

3.5mm STEREO

W905

2
3
6
4
5
7
1

0.1

C923

C396

0.047

C395

0.047

S

T

123456789101112

25.6V

27.5V-27.5V

-

­3132333435363738394041424344454647484950

4V

REMOCON

0V

30V

RDS DATA

RDS CLK

HP SW

4.2V

MIC DET

P-P

VR JOGA
VR JOGB
NC(GND)

SH REQ

KEY KARAOKE

KEY TU

XC OUT

X OUT

RESET

SEL/ TUNER

SEL TUNER

5V

ST/ AV.6CH

0V

LC72 CK

LC72 DI/ ST

LC72 CE
LC72 DO

CHECK

E DET

CR TIMER

SD

100

0V

5.1V

R988 1K

R937 10K

R987 1K

:AUDIO SIGNAL LINE

-

25.6V

8G

30

5.1V

29

2.6V

28

2.6V

27

0.6V

26

5.1V

25

0V

24

0V

23
22

1.4V

21

5.1V

20

5.1V

19

5.1V

DD1

V

18

2.3V

17

2.3V

XC IN

16

Vss

15

2.7V

14

1.6V

XIN

13

5V

12

2.2V

AC IN

11

0V

10

9
8

100K

R976

7

5.1V

6

5.1V

5

4.6V

4

0V

3

0V

2

2.5V

1

R926

2.2K

C901

6.3V100

R918 10K

R919

15K

R991

47K

C903

R953 100

D905 1SS291TA

R928 47K

L902 1 H

0.01

R954
100K

4.7K

R949

100

R950

0.1

C912

18P

C911

C926

1000P

D902

1SS291TA

5V

A
B
C

D
E

R952

10M

X902

(32.7kHz)

5.1V

Q901
UN4212TA

RESET

C925

R9561KR957

C915

R940

R929 1K
R930 1K
R932 1K
R931 1K

X901

(6MHz)

1

3

330K

R951

20P

C910

0V

D904

1000P

0.01

1K

D901

1SS291TA

C914

MA165TA

1K

2

50V2.2

L901

10 H

C902

10V1000

U

J

H

G
A
B
D
C

: POSITIVE VOLTAGE LINE : NEGATIVEVOLTAGELINE

A
B

-

30.1V

-

30.1V
51

-

100K

R990

D306

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

1.5K

R939

( )

SELS5223C

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

D954

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

D931

MA165TA

D933 MA165TA

100K

R993

C916

6.3V100

C

ABCDEFGH I J K LMNOPQRST UVWX

23.4V-20.5V-26.3V-26.3V

-

P12

-

VP
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
V

DD4

P33
P34
P35
P36
P37
P38
REGIN0
REGIN1

STAND-BY

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

0V

1.5K

R986

)

D951

PLAY/ REC

SELS5923C

LNJ301MPUJAD

(

5.1V

P9

P11

P10

FM / AM

T 5.5ms.

F=32.7kHz

2V/2ms.DIV.

TIMER

S.W.LED

LOUNGE

0V

0V

220

R995

)

R994 100K

S.WOOFER

(DIGITAL

R999

23.4V-20.5V-26.2V

5.1V

-

P8P7P6P5P4P3P2

DD3

V

IC901
C2BBFD000317

SYSTEM CONTROL/
FL DRIVE

4V
0V

-

30V

FM / AM

2V
P-P

T

10ms.

CHORUS

MUTENCPOWER

0V0V0V

4.8V

100K

R960 1.5K

R959 47

R958 1K

26.2V-26.2V-26.1V-26.3V-23.5V-23.5V

29.2V

-

-

FM / AM

F=6MHz

FM / AM

F=32.7kHz

F=32.7kHz

5V

0V

5V

0V

DD2

MUTE2NCMUTE3

Vss2

V

5.1V

5.1V

C905

1000P

2.7K

R969

25.5V

23.5V

-

-

P1

1G2G3G4G5G6G7G

FM / AM

T 5.5ms.

FM / AM

F=6MHz

3.3V
P-P

5.2V
P-P

FM / AM

5.2V
P-P

2V/2ms.DIV.

SHCS

SHDO

SHDI

0V

3.3V

1.9V

1.4V

1.9V

R935 100

R934 100

100

R936

-

SHCK

EFIKLMNO Q

SA-DV280(EB,EG) OPERATIONCIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-2

OPERATION CIRCUIT

A

5.1V
EVQVBXFK124B

(VOLUME)

COM

1 2 3

C151

16V10

C158

6.3V47

560P

C154

47P

C157

VR901

BA

IC151
C1BB00000527

RDS SIGNAL
DEMODULATOR

2.5V
VREF

1

2.5V
HPX IN

2

5.1V
V

3

VssA

4

2.5V
FL OUT

5

2.5V
CIN

6

TEST

7

X OUT

8 9

22K

R962

100

R945

DEA

DDA

X151

C152
330P

: NEGATIVEVOLTAGELINE
: POSITIVE VOLTAGE LINE

0.01

C917

C918

6.3V100

22K

R961

C909

100

R943

RDCL

RDDA

MODE

V

VssB

IDR

RST

DDB

XIN

1000P

16

2.6V

15

2.6V

14

0V

13

1K

R157

12

5.1V

11

10

2.5V2.7V

47P

C156

R151

R153

C155

R946

1K

1K

100K

1000P

1K

R152

100K

R154

C153

1000P

L151

100 H

R158

1K

BC

: FM SIGNAL LINE
: AM SIGNAL LINE

Z901
B3RAD0000028

(REMOTE SENSOR)

3

2

1

C159

C160

6.3V47

1000P

L152

:AUDIO SIGNAL LINE

TUNER Lch/C

TUNER Rch

A.GND

Lch IN
Rch IN

+B(10V)

R941

1K

Q902
UN411FTA

MUTING CONT.

3.3V

2.2K

R942

M
A

B
C
D
E
F
G
H

I
J
K
L

U
N
O

Q

S

T

100 H

3.3V

0V

D906

MA165TA

D907

MA165TA

6V

R974

1K

C931

16V10

D961

N

R975

MA4075MTA

22K

R966

3.9K

7.6V

R965

3.9K

L153

R155

D151

MA4051MTA

ABC

-30.1V

1 H

120

W902B

W901B

To
SOUND
PROCESSOR
(SH-DV280)

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

ToTUNER UINT
on SCHEMATIC
DIAGRAM-5/11,12-A

SUR L

SUR R

S.W
MIC

-B(-

10V)
V.GND
D.GND

CS/ REQ

CLK

DATA

CT GND

SH FL1
SH FL2

SYNC

T.GND

+B(1)

+B(2)

DET

Rch IN

Lch IN

SD

CE

DO

CL

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

To
SOUND
PROCESSOR
(SH-DV280)

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

15
14
13
12
11
10

9
8
7
6
5
4
3
2
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

MAIN CIRCUIT

B

W501
1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

R51147R509

R512 47R510 47

W902A

W901A

6V

7.2V

10.4V

H

G

A

47

B

A
B
C
D

B
E
F
G

C
D
E
F
G

E
F
J

K

L
M

I

A

B

C

Q707
2SB1417PQTA

REGULATOR

-

30.1V

C708

0.047

-

30.7V

C706

35V10

-

R211

37.3V

R597

2.2K

R598

2.2K

270

C707

0.047

R563

D201

2.7K

MA4056MTA

R708

D721

MA4300MTA

4.7K

R564

2.7K

C201

C737

0.1

50V100

7.6V

-

10.4V

C659

16V10

C660

16V10

R615

1 2 3 4 5 6 7 8

15

16

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

100K

R205

Q605,606
2SD2144STA

MUTING

4.7K

H
G
F

C

B

D

A
E

R631

3.9K

R632

3.9K

4.7K

R614

100K

R203

0V 0V-10.4V

14

13

C601

100K

R202

0.7V

Q605

1K

R683

1K

R684

Q609,610
2SD2144STA

C509

C510

MUTING

0V

0.01
0V

0.01

A

B

C

A
B

C202

0.1

100K

R204

Vss

INHZ0Z1Y1 Y0

IC201
BU4053BCFE2

SIGNAL SELECTOR

B

A

X0X1VDD

12 11 10 9

16V10

4.7K

R617

C656

16V10

C655

16V10

C602

16V10

R695

470

0V

0V

-

10V

Q606

Q609

Q610

-

10V

-

10V

R696

R693

1K

R692

1K

47K

Q612
UN411FTA

MUTING CONT.

R603

3.3K

4.9V

R694

22K

G

C

R605

D611

MA4051MTA

4.7K

R687

1.5K

R606

C664

C725

4.7K

5.1V

-

16V10

16V47

R688

1.5K

10.2V

ToTUNER UINT
on SCHEMATIC
DIAGRAM-5/11,12-A

T.GND

+B(1)

+B(2)

DET

Rch IN

Lch IN

D705

C715

25V6800

RL1N4003N02

D718

RL1N4003N02

D717

RL1N4003N02

C731

1000P

D720

RL1N4003N02

D719

RL1N4003N02

14.7V

C741

H
A

C714

1000P

D

0.1
C

Q723
2SC3940AQSTA

CP101

1
2
3

SD

4
5
6
7

CE

8
9

DI

10

DO

11

CL

R230 1K

R229 1K

G

B
F
A
E
D
C

REGULATOR

C735

0.047

7.8V

C740

16V10

14.7V7.2V

R763

R764

C733

0.047
330

D737

4.7K

MA4082LTA

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

SCHEMATIC DIAGRAM-3

MAIN CIRCUIT

B

IC601

MA700ATA

RSN311W64B

POWER AMP

D756

D757

MA700ATA

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE :AUDIO SIGNAL LINE

7.6V

-

10.4V

123456789101112131415181920212223242526 1617

-

59.5V

-

29.3V

-

51.4V

0V0V0V0V

0V0V54.1V

29.7V

-

0.2V

29.4V

-

0V0V0V0V

0V28.9V

0V0V59.5V

C648

1000P

B

A

R602

3.3K

0V

Q607

0V

0.7V

Q608

C603 470P

R601

3.3K

4.7K

R618

R685

1K

0.7V

R686

1K

Q607, 608
2SD2144STA

MUTING

C604 470P

R604

3.3K

L
K

M

G

0.01

C705

AB C

C607 470P

2.1V

C608 470P

C649 1000P

0.01

C617

0.01

C618

Q708
UN4211TA

SWITCHING
(POWER)

C650 1000P

R691

68

R738

3.9K

Q709
2SD2144STA

SWITCHING
(POWER)

0V 0V

10K

R776

C605 1000P

C606 1000P

R612 56K
C610 56P
R611 56K
C609 56P

R610 150K
C612 15P
R609 56K
C611 39P
R608 56K
C614 47P
R607 56K
C613 47P

22K

R628

R648

120

R647

270

0.7V

47K

R739

C622

10V100

R572

R627

15K

N

470K

C616

50V0.47

R620
120K

R619 120K

R622 120K

R621 150K

R624 150K

R623
120K

0V

Q601 Q602

Q601,602
2SC5398RSTA

PROTECTOR

10K

D754

RL1N4003N02

D755

RL1N4003N02

D558

MA165TA

Q503
2SC5398RSTA

SWITCHING

C704

35V4700

C702

35V4700

R544

5.1V5.1V

0V

D753

RL1N4003N02

D761

RL1N4003N02

D704

1N5402BM21

0V

1SS291TA

0V

R637

1N5402BM21

C703

35V4700

C701

35V4700

D702

1N5402BM21

D602

SB360L6508

D607

15K

D703

D752

1N5402BM21

R635

2.2K

0.1

C619

D751

1N5402BM21

0.1

C761

D601

SB360L6508

68K

R638

0.1

C709

D701

1N5402BM21

D658

MA165TA

D657

D659

R761

G

F

E

D

MA165TA

MA165TA

220

14.7V

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

FAN MOTOR

C555

R567

1

16V10

22

M

2

N

7.6V

Q556
2SC5398RSTA

SWITCHING

123456789101112131415181920212223242526 1617

0V0V59.5V

D658

MA165TA

0V

R569

10K

0.5V

FAN ON:0V4.7V

D554

MA165TA

R557

D551

R547

10K

MA165TA

18K

C371

R570

6.3V100

2.2M

C552

R559

0.01

4.7K

-

10.4V

0.3V

Q551
2SA1995RSTA

SIGNAL LEVEL DET.

R556

C551

50V2.2

18K

R546

R551

100K

18K

-

10.4V

R591

4.7K

R552

100K

R560

7.6V

-

10.4V

Q555
2SD2144STA

SIGNAL LEVEL DET.

22K

R555

47K

D583

RL1N4003N02

D582

RL1N4003N02

MA165TA

FAN ON:0V

0.5V

Q557
2SA1995RSTA

MOTOR DRIVE

R558

2.2K

C554

D552

16V220

R561
100K

R566

68K

R568

100

0V

Q554
2SA1995RSTA

SIGNAL LEVEL DET.

D555

MA4100MTA

C550

A

D553

0.01

MA700ATA

7.6V

7V

0V

Q553
2SD2144STA

MOTOR DRIVE

C559

0.01

0V

C556

16V10

N

JK551

7.6V

6.8V
FAN ON:1.6V

D659

R761

29.2V

0.047

R724

C718

D581

3.9K

25V100

RL1N4003N02

R722

2.2

C710

0.047

Q701
2SD2374PQAU

REGULATOR

15.2V

C717

16V33

29.2V14.7V

R725

C719

0.047

10

D723

5.6K

R723

MA4150HTA

B

C

D

E

F

R721

R720

G

4.7

1032 4 5 6 7 8 9

1032 4 5 6 7 8 9

3.9K

POWER SUPPLY CIRCUIT

C

Q702
2SB1548PQAU

REGULATOR

-

30.1V

-

10.4V

-

11V

C722

25V100

-

0.6V

Q705
2SA1995RSTA

STABILIZER

C720

-

11V

R796

2.2

R797

D657

MA165TA

MA165TA

3.3K

R719

220

2.2

C724

0.047

AB

C639

1000P

C640

1000P

C641

1000P

C642

1000P

C732

0.022

C647

1000P

E601

E602

7.6V

Q704

8.1V

Q703

C721

10V100

30.1V7.6V

Q703,704
2SD2137PQTA

REGULATOR

30.1V

8.1V

C723

0.047

14.7V

-

10.4V

10.4V

D738

MA165TA

D730

R729

220

R768

100

MA4091HTA

R769

3.9K

R727

D725

MA4082LTA

Q711,712
2SB1548PQAU

REGULATOR

10.4V 14.1V

Q712

13.6V

10.4V

D739

MA165TA

10.2V

C734

D758

50V3.3

MA165TA

27

CN781

W701B

9.6V

R754

0.47

Q711

220

R765

R767

27

1

1

1K

R749

0.47

R753

14.1V

13.6V

13.6V

Q725
2SC5398RSTA

STABILIZER

SA-DV280(EB,EG) MAIN,POWER SUPPLYCIRCUIT DIAGRAM

SCHEMATIC DIAGRAM-4

MAIN CIRCUIT

B

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE :AUDIO SIGNAL LINE

L605
R649

B

C

A

D

F
E
G

A
B
C

10

L602

R640

10

L606

R650

10

L601

R639

10

R652

C626

C628

R641

C621

C631

10

C635

0.047

R651

0.1

C627

C637

0.047

0.1

C629

10

0.1

0.1

10

0.1

0.1

R642

C620

C630

C636

0.047

10

C632

0.047

0.1

0.1
CP601

10
11
12

CP602

IJ

JK601

JK602

GND

1

GND

2

C OUT

3

C OUT

4

GND

5

GND

6

GND

7

GND

8

SUR L OUT

9

SUR L OUT
SUR R OUT
SUR R OUT

ECO

1

SH SYNC

2

SA SYNC

3

D.GND

4

BU5V

5

RS13V

6

+B

7

NC

8

HF(6 )

LF(8

HF(6 )

LF(8

SPEAKERS

Lch

)

Rch

)

E

AC1

AC2

FL2
FL1

W722B

S1

1

S2

2

S3

3

S4

4

S1

1

S2

2

S3

3

S4

4
5

CT

6
7

S7

8
9

10

W721B

W722A

W721A

S1

1

S2

2

S3

3

S4

4

S1

1

S2

2

S3

3

S4

4

AC1

5

CT

6

AC2

7

S7

8

FL2

9

FL1

10

D
E
F
G

C

D
H
F
E

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

GND

GND
C OUT
C OUT

GND

GND

GND

GND

SUR L IN
SUR L IN
SURRIN
SURRIN

ECO
SH SYNC
SA SYNC

D.GND

BU5V

RS13V

+B

NC

AC IN CIRCUIT

D

CN601

1
2
3
4
5
6
7
8

9
10
11
12

CN602

1

R712 2.2K

2

3

4

5

6

7

8

RL1N4003N02

A

B

C

Q726
2SC3940AQSTA

REGULATOR

0.01

C754

6.7V

C759

10V47

D711

10.7V6V

R773

18

C758

D747

0.01

MA4068LTA

R774

R795

3.9K

18

D745

MA4051MTA

RL1N4003N02

D746

R777

1K

R772

22K

D740

R771

A

C

B

MA165TA

2.2K

L603

R643

10

10

R645

0.1

C633

0.1

C625

Q791
2SD2144STA

RELAYDRIVE

0V

0.7V

L604

R644

10

R646

C624

C634

JK603

C651

0.047

C652

CENTER(8 )

1000P

H

SPEAKERS

Rch

10

C646

0.047

C644

1000P

0.1

0.1

C645

C643

0.047

1000P

SURROUND(8

Lch

)

G

F

AC1

AC2

FL2
FL1

POWER TRANSFORMER

E

(A) CIRCUIT

W722B

S1

1

S2

2

S3

3

S4

4

S1

1

S2

2

S3

3

S4

4
5

CT

6
7

S7

8
9

10

W721B

A
B
C
D

K5G502AA0002

K5G502AA0002

C755

FP791

FP792

16V1000

R793

A

B

C

D

R798

47K

R794

D743

D741

RL1N4003N02

RL1N4003N02

C753

0.01

D742

D744

RL1N4003N02

RL1N4003N02

D500

MA165TA

6V

AC9.4V

RL702

3 1

T702

24

C791

1000P

F1 T2A

Z701

L701

JK701

AC IN

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

W2/W3

W1

E

D

C

POWER TRANSFORMER

F

1

CN701

CN702

AC

29.2V

AC22.6V

AC22.6V

AC11.7V

AC11.7V

AC4.7V

CN703

CN704

CN705

CN706

CN707

CN708

2.2

CN709

CN710

T701

(B) CIRCUIT

CN711 W1

CN712

CN713

For [EG] area.

W3

W2

B

A

For [EB] area.

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

SCHEMATIC DIAGRAM-5

Z101 TUNER UNIT(RAN0005EM-2)

H

FM ANT

)

(75

G

22P 15P

:POSITIVE VOLTAGE LINE

2SK360

6 ~ 220

2.7K47P

5P ~ 12P

33K

5P

RF AMP

100K

0.022

2P

100

2SK360

FM OSC

100K

6P ~ 10P

1P ~ 5P

33K

33K

2SC2413

BUFFER AMP

8P

27P

220

100K

0~5P

22P0.022

:FM OSC SIGNAL LINE

4P

27P

2P

0.022
5P

1 H

1000P

330

2SC2059

FM MIXER

680

820K ~ 2.2M

:FM SIGNAL LINE

:AM SIGNAL LINE
:AM OSC SIGNAL LINE

10K

0.022

0 ~ 220

150

0.01

0.022

100

100

1P ~ 5P

10K 10K

F

AM ANT

EXT

LOOP

E

D

C

0.47 H

10K

0.47 H

5.6K

0.01

1000P

10P ~ 33P

330P ~

580P

27P

0.047

7.2MHz

100K

5 ~12P

22

10K

DZS5.1B

4.7

560

A OUT

DI

1K

AIN

LC72131M

PLL FREQUENCY
SYNTHESIZER

CL

PD

DO

27P~ 33P

20 19 18 17 16 15 14 13 12 11

Vss

X OUT

XIN

CE

1 2 3 4 5 6 7 8 9 10

18P

2.2K

680 ~

A
D

1K ~ 10K

B
C

4.7K ~ 22K

100

VDD

B01

A

C

B

D

FM IN

B02

AM IN

B03

0.58

1000P

I02

B04

H

1000P

100

390

A

220

B

27K

22K~100K

100P0.01

I01 IF IN

C

D

B

3.3K

10K

1K

1K

1K

470

ABCD

1K

10K

E

F

A

123456789101112

10K

0.01

1000P

270K ~ 680K

330

10P ~

39P

330

270K ~

680K

100

100

DET OUT

ST

2SC2413

FM IF AMP

1022K4.7

1K ~ 10K

150P

PILOT IN

FM DET

MPX IN

Vcc

DTA114

POWER SUPPLY
(FM:ON)

68K 0.1

0.018

1000P ~ 0.01

0.018

Lch OUT

Rch OUT

PILOT OUT

STRQ

FM/AM

MONO

1K1

11K

100K

100K

B

4700P

A

4700P

2SC2413

270 ~ 680

LA1833MN

FM/AM IF AMP,

A

D

B
C

DET/AM OSC,MIX/FM MPX

1K ~ 10K

3.3
1000P

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

AFC

AM OSC

AM OSC OUT

AM MIX OUT

REG

FM IF IN

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

FM IF AMP

100P ~ 1000P

4.7

47K

0.01 ~ 0.068 10K~ 100K

AGC

GND

AM OUT

SD

AM RF IN

AM IF IN

4.7K ~ 22K

100

22

0.022

1

0.01

470

AB

0.1

470

5 ~ 150

1000P

1

470

0.47

2.7K1

0.1

3.3K

2SC2712

SWITCHING

1K ~ 10K

68

BADFC E

A

B

A

B
D
C

11

CL

DI

DO

B

To MAIN CIRCUIT(CP101)
on SCHEMATICDIAGRAM-2/19-A

Lch OUT

A

B

13 245678910

CE

DET

+B(2)SD+B(1)

Rch OUT

T.GND

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

BU4053BCFE2

C1BB00000527

1

8

C2BBFD000317 RSN311W64B UN411FTA

51

16

80

9

81

50

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

100

.

.

.

31

.

.

.

.

30

.

.

.

.

.

.

.

.

1

1

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

26

UN4211TA
UN4212TA

E

C

B

2SB1417PQTA
2SD2137PQTA

E

C

B

2SD2144STA

B

C

E

2SA1995RSTA

2SC3940AQSTA 2SB1548PQAU

2SC5398RSTA

B

C

E

E

C

B

SB360L6508 1N5402BM21

RL1N4003N02

Ca

Cathode

A

Anode

A

Anode

Ca

Cathode

2SD2374PQAU

B

C

E

A

Anode

Ca

Cathode

1SS291TA
MA700ATA

A

MA4030MTA
MA4051MTA
MA4056MTA
MA4068LTA
MA4075MTA
MA4082LTA
MA4091HTA

MA4100MTA

MA165TA

MA4150HTA

Ca

MA4300MTA

Ca

Cathode

A

A
Anode

Anode

Ca

Cathode

LNJ301MPUJAD SELS5223C

SELS5923C

Anode

A

Cathode

Ca

Anode

A

Cathode

Ca

SPEAKERS

12

.
.
.
.
.

CP601

.
.
.
.
.

1

8

.
.
.
.

CP602

.
.

1

MAIN P.C.B.

B

FAN MOTOR

W722A

1

1

W721A

. .

4

. . . . . . . .

To SOUND PROCESSOR

2
1

10

W901A

W501

. . . . . .

1

. . . . .

2

JK551

2
1

. . . . . . . .

2

. . . . . . . .

1

15

14

W902A

CN781

1

CP101

19

. . . . . .

1

. . . . .

2

. . . . . . . .

Z101

1

.
.

TUNER

.
.

UNIT

.
.
.
.
.

11

20

15

14

10

. . . . . . . .

1

10

W701B

1

.
.
.
.
.
.

8

1

12

CN602

.
.
.
.
.
.
.
.
.
.

CN601

POWER
TRANSFORMER

E

(A) P.C.B.

POWER
TRANSFORMER

F

(B) P.C.B.

T702

(Power

transformer)

AC IN P.C.B.

D

W2/W3

. . . . . . . .

1

W721B
W722B

For [EB]
area.

W1

BROWN

W1

10

. .

1

4

T701

(Power transformer)

W3

W2

BLUE

For [EG]
area.

POWER SUPPLY P.C.B.

C

W902B

15

.

14

.

.

.

.

.

.

.

.

.

.

2

1

15

.

14

.

.

.

.

W901B

.

.

.

.

.

.

2

1

OPERATION P.C.B.

A

CENTER/

SURROUND

SPEAKERS

AC IN