Technics SADV-250 Schematic

Service Manual

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ORDER NO. AD0103076C2

Stereo tuner/ amplifier

l

SA-DV250

Colour

(S).......................Silver Type

Areas

EB.......................Great Britain.

EG.......................Europe.

System: SC-DV250

Because of unique interconnecting cables, when a

compact requires service, send or bring in the entire

system.

Specification

•Amplifier Section (Low frequency side)

Power output

DIN 100Hz, THD 1%, 8Ω both channels driven:

RMS 100Hz, THD 10%, 8Ω both channels driven:

•Amplifier Section (High frequency side)

Power output

DIN 1kHz, THD 1%, 6Ω both channels driven:

RMS 1kHz, THD 10%, 6Ω both channels driven:

Power output (prologic mode)

DIN (front: high frequency) 1kHz, THD 1%, 6Ω both channels driven:

(front: low frequency) 100Hz, THD 1%, 8Ω both channels driven:

(surround) 1kHz, THD 1%, 8Ω both channels driven:

(center) 1kHz, THD 1%, 8Ω: 60W

RMS (front: high frequency) 1kHz, THD 10%, 6Ω both channels driven:

(front: low frequency) 100Hz, THD 10%, 8Ω both channels driven:

(surround) 1kHz, THD 10%, 8Ω both channels driven:

(center) 1kHz, THD 10%, 8Ω: 80W

• Total harmonic distorition

Rated power at 1kHz/ 6Ω: 1%

Half power at 1kHz/ 6Ω: 0.1%

• Load impedance

(high frequency): 6Ω

Front

(low frequency): 8Ω

Surround: 8Ω

Center: 8Ω

• FM tuner section

Frequency range: 87.50-108.00MHz

Sensitivity (S/N 26dB): 1.5μV

S/N: MONO 70dB

Antenna terminals: 75Ω (unbalance)

• AM tuner section

2x45W

2x65W

2x25W

2x35W

2x25W

2x45W

2x30W

2x35W

2x65W

2x40W

(0.05MHz steps)

(75dB, IHF)

http://servis-manual.com/

7.1 To display the malfunction code

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U70 DVD:

U70 DECK: tuner/amplifier when a malfunction occurs. Refer to Fig. 7-1.

F61: Automatically displays on the tuner/amplifier when a malfunction occurs. Refer to Fig. 7-1.

Automatically displays on the

Fig. 7-1

@

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http://servis-manual.com/

7.2 To return to the normal display

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1. For U70 DVD/U70 DECK

¡

Press an any operation button on the tuner/amplifier.

¡ To re-display the code, switch the power off (POWER STANDBY button), and then

switch power back on again.

2. For F61

¡ If F61 is displayed, the power will automatically be switched off and the standby

indicator will light up.

¡

F61 will be displayed for 3 seconds, and then the clock will be displayed.

¡ To re-display the code, switch the power on. F61 will be re-displayed, and then after 3

seconds the clock will be displayed and the power will automatically switch off.

@

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http://servis-manual.com/

7.3.1 U70 DVD, U70 DECK/(displayed
automatically)

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Problem or condition

A bus-line communications error has occurred as a result of the flat cables being inserted
incorrectly, thus preventing the system from operating.

¡

If U70 is displayed on the tuner/amplifier, the Cassette deck or DVD Changer cannot be
operated by remote control.

l

Correction Procedure

1.To check for correct insertion of the flat cables.

n Insert each connectors until you hear a click.

n

Insert the flat cables at the back of the unit in the order indicated. Refer to Fig. 8-

2.

Make sure the white side of the cables is on your right side. Refer to Fig. 8-3.

Fig. 7-2.

Fig. 7-3.

2.Breakage of the flat cables. (Check and replace.)

3.If the problem is not corrected by items 1 and 2 above, this indicates a faulty IC.

SA-DV250:

IC901 (C2BBFD000317)

http://servis-manual.com/

SL-DV250:

IC401 (M38504E6227F)

RS-DV250:

IC701 (M38503M2406F)

Check these ICs and replace.

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http://servis-manual.com/

7.3.2 F61

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Problem or condition

When the power switch is switched on, it automatically switches back off, making it
impossible to switch power on.

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Correction procedure

Faulty Tuner/Amplifier (SA-DV250) output IC (IC601).

(When a DC voltage is applied to speaker terminals.)

@

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http://servis-manual.com/

SCHEMATIC DIAGRAM-1

OPERATION CIRCUIT

A

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

:AUDIO SIGNAL LINE

R997

D973

C921

150

MA4030MTA

1000P

R996

150

FL901 (A2BB00000084)

C922

35V33

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

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

R916

1.5K

S904

)

PLAY/ REC
(

FL DISPLAY

R903

1.2K

)

S903

DEMO
(-

R915

1.2K

ABCDEFGHI JKLMNOPQRSTU

ABCDEFGHIJKLMNOPQRSTUVWXYZ

R922

R921

10K

10K

R925

1K

R924

1K

C908

C907

470P

470P

R9021KR901

R9141KR913

820

)

S902

CLOCK/ TIMER

(

820

)
PTY

S915

(

(RDS DISP MODE)

S901

S914

)
/

(

)
PS

(

R944

2.2K

X

W

C919

C927

25V22

25V22

JK903
PHONES

3.5mm STEREO

W905

2
3
6
4
5
7
1

0.1

C923

C396

0.047

C395

0.047

S

T

D974

MA165TA

C904

0.01

C924

V

0.1

SCHEMATIC DIAGRAM-2

-

30.1V

-

30.1V

-

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

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

: POSITIVE VOLTAGE LINE : NEGATIVEVOLTAGELINE

A
B
C

ABCDEFGHI JKLMNOPQRST UVWX

-

VP

51

P13

52

P14

53

P15

54

P16

55

P17

56

P18

57

P19

58

P20

59

P21

60

P22

61

P23

62

P24

63

P25

64

P26

65

P27

66

P28

67

P29

68

P30

69

P31

70

P32

71

V

72

P33

73

P34

74

P35

75

P36

76

P37

77

P38

78

REGIN0

79

REGIN1

80

R986

)

D954

PLAY/ REC

SELS5923C

(

5.1V

23.4V-20.5V-26.3V-26.3V

-

P12

DD4

STAND-BY

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

1.5K

D951

LNJ301MPUJAD

P9

P11

P10

FM / AM

T 5.5ms.

F=32.7kHz

2V/2ms.DIV.

TIMER

S.W.LED

LOUNGE

0V

0V0V0V

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

0V

0V

4.8V

100K

R960 1.5K

R958 1K

R959 47

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

29.2V

-

-

T 5.5ms.

FM / AM

F=6MHz

FM / AM

F=32.7kHz

F=32.7kHz

5V

0V

2V/2ms.DIV.

5V

0V

DD2

Vss2

V

MUTE2NCMUTE3

0V

5.1V

5.1V

C905

1000P

2.7K

R969

27.5V-25.5V

23.5V

-

-

P1

1G2G3G4G5G6G7G

FM / AM

5.2V
P-P

FM / AM

3.3V
P-P

1.4V

FM / AM

F=6MHz

SHCS

1.9V

R936

SHDO

1.9V

R935 100

100

5.2V
P-P

SHDI

SHCK

3.3V

R934 100

-

4V
0V

5.1V

R988 1K

25.6V-27.5V

-

3132333435363738394041424344454647484950

REMOCON

30V

RDS DATA

4.2V
P-P

KEY KARAOKE

SEL/ TUNER

SEL TUNER

5V

ST/ AV.6CH

0V

LC72 DI/ ST

E DET

CR TIMER

100

0V

R987 1K

R937 10K

RDS CLK

HP SW

MIC DET
VR JOGA
VR JOGB
NC(GND)

SH REQ

KEY TU

DD1

V

XC OUT

XC IN

Vss

X OUT

XIN

RESET

AC IN

LC72 CK

LC72 CE

LC72 DO

CHECK

SD

C901

8G

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

C912

1SS291TA

R949

R950

0.1

C911

C926

D902

4.7K

100

18P

1000P

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

SCHEMATIC DIAGRAM-3

OPERATION CIRCUIT

A

: POSITIVE VOLTAGE LINE : NEGATIVEVOLTAGELINE

:AUDIO SIGNAL LINE

5.1V
EVQVBXFK124B

(VOLUME)

COM

C151

16V10

C158

6.3V47

560P

C154

47P

C157

VR901

22K

R962

BA

1 2 3

100

R945

IC151
C1BB00000527

RDS SIGNAL
DEMODULATOR

2.5V
VREF

1

2.5V
HPX IN

2

5.1V
V

DDA

3

VssA

4

2.5V
FL OUT

5

2.5V
CIN

6

TEST

7

X OUT

8 9

X151

0.01

C917

22K

R961

100

R943

DEA

IDR

16

2.6V

RDCL

15

2.6V

RDDA

14

0V

RST

13

1K

DDB

XIN

R157

12

5.1V

11

10

2.5V2.7V

47P

C156

MODE

V

VssB

C918

6.3V100

C909

1000P

R946

R151

R153

C155

1K

1K

100K

1000P

1K

R152

100K

R154

C153

1000P

L151

100 H

BC

Z901
B3RAD0000028

(REMOTE SENSOR)

3

2

1

C159

C160

6.3V47

1000P

L152

H

100

R942

2.2K

Q902
UN411FTA

MUTING CONT.

3.3V

0V

M
A

B
C
D
E
F
G
H

I
J
K
L

MA165TA

MA165TA
U
N
O

Q

S

T

3.3V

D906

D907

6V

R941

1K

R974

1K

C931

16V10

N

R975

D961

ABC

7.6V

W902B

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

-30.1V
W901B

15
14
13
12

R965

R966

3.9K

3.9K

22K

MA4075MTA

H

L153

1

120

R155

11
10

9
8
7
6
5
4
3
2
1

C152
330P

R158

1K

D151

MA4051MTA

SCHEMATIC DIAGRAM-4

MAIN CIRCUIT

B

A.GND

Lch IN
Rch IN

+B(10V)

SUR L

SUR R

S.W
MIC

10V)
V.GND
D.GND

CLK

DATA

CT GND

SH FL1
SH FL2

SYNC

W501
1
2
3
4

R512 47R510 47

5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20

W902A

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

W901A
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

To
SOUND
PROCESSOR
(SH-DV250)

TUNER Lch/C

TUNER Rch

-B(-

CS/ REQ

R51147R509

10.4V

6V

7.2V

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE

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

R597

2.2K

R598

2.2K

-

R211

37.3V

270

C707

R563

0.047

2.7K

D201

MA4056MTA

R708

D721

R564

4.7K

MA4300MTA

: FM SIGNAL LINE
: AM SIGNAL LINE

7.6V

-

10.4V

C659

16V10

C660

16V10

2.7K

1 2 3 4 5 6 7 8

16

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

0.1

C201

Q605,606
2SD2144STA

MUTING

100

C737

R205

R615

15

100K

4.7K

H
G

F

C

B

D

A
E

R614

A

B

C

4.7K

14

R683

1K

:MIC SIGNAL LINE
:AUDIO SIGNAL LINE

R631

R202

3.9K

R632

3.9K

R203

100K

100K

13

0.7V

A
B

R204

0V 0V-10.4V

IC201
BU4053BCFE2

SIGNAL SELECTOR

X0X1VDD

12 11 10 9

C601

16V10

4.7K

R617

C602

16V10

0V

Q605

-

10V

Q606

1K

R684

Q609,610
2SD2144STA

MUTING

Q609

0V

-

0.01

C509

Q610

0V

-

0.01

C510

100K

INHZ0Z1Y1 Y0

16V10

10V

10V

A

C655

0V

R696

R693

1K

R692

1K

16V10

R695

470

47K

C202

0.1

Vss

B

C656

Q612
UN411FTA

MUTING CONT.

R603

3.3K

4.9V

R694

22K

G

C

R605

D611

4.7K

MA4051MTA

R687

1.5K

R606

C664

C725

4.7K

5.1V

-

16V10

16V47

R688

1.5K

10.2V

ToTUNER UINT
on SCHEMATIC
DIAGRAM-10

T.GND

+B(1)

+B(2)

DET

Rch IN

Lch IN

D705

C715

6800

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

SCHEMATIC DIAGRAM-5

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

L
K

3.3K

C607 470P

C608 470P

C617

0.01

C649 1000P

C650 1000P

R691

68

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

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

D558

MA165TA

Q503
2SC5398RSTA

SWITCHING

R544

SB360L6508

R635

2.2K

0.1

C619

D601

SB360L6508

68K

R638

0.1

C709

D659

D658

MA165TA

D657

MA165TA

MA165TA

D602

5.1V5.1V

0V

0V

0V

D607

1SS291TA

15K

R637

M

G

0.01

C705

AB C

Q708
UN4211TA

SWITCHING
(POWER)

2.1V

C618

0.01

R738

3.9K

Q709
2SD2144STA

SWITCHING
(POWER)

0V 0V

10K

R776

0.7V

R739

47K

D754

RL1N4003N02

D755

RL1N4003N02

14.7V

1N5402BM21

4700

C704

4700

C702

D704

D753

RL1N4003N02

D761

RL1N4003N02

D702

1N5402BM21

1N5402BM21

4700

C703

4700

C701

D752

1N5402BM21

D703

C761

D751

0.1

D701

1N5402BM21

1N5402BM21

220

R761

G

F

E

D

SCHEMATIC DIAGRAM-6

MAIN CIRCUIT

B

Q556
2SC5398RSTA

SWITCHING

0V

R569

10K

0.5V

D554

FAN ON:0V4.7V

MA165TA

R557

D551

R547

10K

MA165TA

18K

C552

0.01

0.3V

Q551
2SA1995RSTA

SIGNAL LEVEL DET.

C371

6.3V100

C551

50V2.2

18K

R546

-

10.4V

R570

2.2M

R559

4.7K

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE

7.6V

100K

R560

7.6V

-

10.4V

-

10.4V

R591

Q555

4.7K

2SD2144STA

SIGNAL LEVEL DET.

100K

R556

18K

47K

R551

R552

R555

22K

D583

RL1N4003N02

D582

RL1N4003N02

MA165TA

:AUDIO SIGNAL LINE

FAN ON:0V

0.5V

Q557
2SA1995RSTA

MOTOR DRIVE

R558

2.2K

C554

D552

10V220

R561
100K

R566

68K

R568

100

0V

Q554
2SA1995RSTA

SIGNAL LEVEL DET.

D555

MA4100MTA

C550

A

D553

0.01

MA700TA

7.6V

7V

0V

Q553
2SD2144STA

MOTOR DRIVE

C559

0.01

16V10

0V

C556

N

7.6V

6.8V
FAN ON:1.6V

JK551

C555

R567

FAN MOTOR

M

1

N

16V10

22

2

R719

3.3K

29.2V

0.047

R724

C718

D581

3.9K

16V100

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 SUPPLYCIRCUIT

C

Q702
2SB1548PQAU

REGULATOR

-

30.1V

-

10.4V

-

11V

C722

16V100

-

0.6V

Q705
2SA1995RSTA

STABILIZER

C720

-

11V

R796

2.2

R797

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

R729

220

Q711,712
2SB1548PQAU

REGULATOR

R768

100

D730

MA4091HTA

D758

3.9K

R727

D725

MA4082LTA

10.4V 14.1V

Q712

D739

MA165TA

C734

50V3.3

MA165TA

13.6V

10.2V

R769

27

10.4V

CN781

W701B

Q711

9.6V

R765

R767

27

1

1

1K

R754

R749

0.47

R753

14.1V

13.6V

13.6V

Q725
2SC5398RSTA

STABILIZER

220

0.47

SCHEMATIC DIAGRAM-7

: POSITIVE VOLTAGE LINE
: NEGATIVEVOLTAGELINE :AUDIO SIGNAL LINE

L605

C635

C637

C636

C632

IJ

0.047

0.047

0.047

0.047

CP601

CP602

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

10

SUR R OUT

11

SUR R OUT

12

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

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

R651

0.1

C627

0.1

C629

10

0.1

0.1
10

R642

0.1

C620

0.1

C630

10

0.1

0.1

SPEAKERS

Lch

)

Rch

)

D

To AC IN CIRCUIT(CN601)
on SCHEMATICDIAGRAM-8

D

To AC IN CIRCUIT(CN602)
on SCHEMATICDIAGRAM-8

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

E

To POWER
TRANSFORMER(A)
CIRCUIT(W722B)
on SCHEMATIC
DIAGRAM-8

E

To POWER
TRANSFORMER(A)
CIRCUIT(W721B)
on SCHEMATIC
DIAGRAM-8

SCHEMATIC DIAGRAM-8

B

To MAIN CIRCUIT(CP601)
on SCHEMATICDIAGRAM-7

SUR L IN
SUR L IN
SUR R IN
SUR R IN

SH SYNC

B

To MAIN CIRCUIT(CP602)
on SCHEMATICDIAGRAM

SA SYNC

-

7

GND

GND
C OUT
C OUT

GND

GND

GND

GND

ECO

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

R795

0.01

MA4068LTA

R774

3.9K

18

D745

MA4051MTA

RL1N4003N02

D746

R777

1K

R772

22K

A

C

B

D740

MA165TA

Q791

2.2K

R771

2SD2144STA

RELAYDRIVE

: POSITIVE VOLTAGELINE
: NEGATIVE VOLTAGE LINE

JK603

CENTER(8 )

L604

R644

L603

R643

10

10

R645

0.1

C633

0.1

C625

0V

0.7V

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

)

B

To MAIN
CIRCUIT
(W722A) on
SCHEMATIC
DIAGRAM-7

B

To MAIN
CIRCUIT
(W721A) on
SCHEMATIC
DIAGRAM-7

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

1000

C755

R791

RSFMB50KT-L

R792

RSFMB50KT-L

R793

A

B

C

D

R798

2.2

47K

R794

D743

D741

RL1N4003N02

RL1N4003N02

C753

0.01

D742

D744

RL1N4003N02

RL1N4003N02

D500

MA165TA

6V

1

CN701

CN702

AC

29.2V

AC22.6V

AC22.6V

AC11.7V

AC11.7V

AC4.7V

CN703

CN704

CN705

CN706

CN707

CN708

CN709

CN710

AC9.4V

RL702

3 1

T701

T702

24

F

F1 T2A

Z701

C791

1000P

POWER TRANSFORMER
(B) CIRCUIT

CN711 W1

CN712

CN713

L701

JK701

AC IN

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

W2/W3

W1

For [EG] area.

W3

W2

For [EB] area.

SCHEMATIC DIAGRAM-9

FM ANT

(75

AM ANT

EXT

LOOP

Z101 TUNER UNIT(RAN0005EM-2)

100K

0~5P

22P 15P

)

0.47 H

10K

0.47 H

5.6K

0.01

5P ~ 12P

33K

22P0.022

2.7K47P

1000P

2SK360

RF AMP

5P

10P ~ 33P

0.047

27P

100K

7.2MHz

100K

6 ~ 220

1P ~ 5P

330P ~

580P

27P~ 33P

0.022

2P

2SK360

FM OSC

100K

5 ~12P

10K

:POSITIVE VOLTAGE LINE

6P ~ 10P

33K

100

8P

10K 10K

22

4.7

560

1K

33K

2SC2413

BUFFER AMP

27P

680 ~

A

C

B

D

DZS5.1B

2.2K

:FM SIGNAL LINE
:FM OSC SIGNAL LINE

2SC2059

1 H

1000P

330

100

FM MIXER

680

820K ~ 2.2M

22K~100K

390

220

27K

100P0.01

4P

27P

1P ~ 5P

2P

220

0.022
5P

18P

H

0.58

1000P

1000P

:AM SIGNAL LINE
:AM OSC SIGNAL LINE

10K

0.022

0 ~ 220

150

0.01

0.022

A

B

C

D

100

100

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

3.3K

10K

1K

ABCD

AIN

A OUT

CL

DI

1K

1K

DD

PD

V

LC72131M

PLL FREQUENCY
SYNTHESIZER

DO

B01

470

FM IN

AM IN

B02

B03

1K

I02

B04

I01 IF IN

E

F

10K

SCHEMATIC DIAGRAM-10

:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE

10K

0.01

270 ~ 680

LA1833MN

FM/AM IF AMP,

1K ~ 10K

DET/AM OSC,MIX/FM MPX

3.3
1000P

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

AM OSC

AM OSC OUT

A
D

B
C

AFC

1000P

270K ~ 680K

47K

AM RF IN

2SC2413

FM IF AMP

4.7

AGC

330

0.01 ~ 0.068 10K~ 100K

AM OUT

10P ~

39P

100P ~ 1000P

330

DET OUT

270K ~

680K

2SC2413

FM IF AMP

1022K4.7

1K ~ 10K

150P

PILOT IN

DTA114

POWER SUPPLY
(FM:ON)

68K 0.1

0.018

1000P ~ 0.01

0.018

MPX IN

PILOT OUT

Rch OUT

Lch OUT

1K1

11K

100K

100K

B

4700P

A

4700P

4.7K ~ 22K

100

AM MIX OUT

REG

1

GND

AM IF IN

0.01

FM IF IN

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

22

0.1

0.022

ST

SD

470

470

AB

FM DET

5 ~ 150

1000P

Vcc

0.1

470

STRQ

FM/AM

MONO

1

0.47

2.7K1

3.3K

1K ~ 10K

68

BADFC E

A

B

A
B
D
C

11

CL

DO

B

To MAIN CIRCUIT(CP101)
on SCHEMATICDIAGRAM-4

2SC2712

SWITCHING

DI

CE

Lch OUT

Rch OUT

DET

+B(2)SD+B(1)

A

B

13 245678910

T.GND