Kenwood STC-700 Schematics

A B C D E F G H I J

DTC114YUA
DTC143TUA

1

2SA1576

2SB1188

2SB1548

2

2SB1443

3

2SC4081

DTA124EUA
DTC114EUA

4

DTC124EUA

TC4052BF

DAN202U

DAP202U
DA204U

M5237ML

5

TDA7479D

M5280FP
NJM4565M-TE2

6

CAUTION : For continued safety, replace safety
critical components only with manufacturer's rec­ommended parts (refer to parts list).

Indicates safety critical components. To re-

duce the risk of electric shock, leakage-current
or resistance measurements shall be carried out
(exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to
the customer.

• DC voltages are as measured with a high

7

impedance voltmeter. Values may vary slightly
due to variations between individual instru­ments or/and units.

IC2 : M5237ML
IC4 : HD74HC02FP
IC6 : S-80842CNNB
IC7 : TDA7401
IC9 : 70F3033AGC6P8
IC11 : TDA7407
IC13 : TC4052BF(N)
IC14,17,21-24 : NJM4565M-TE2
IC15 : M5280FP
IC16 : TDA7479D

Q1,16,22,33,42,45 : 2SC4081
Q3,6 : 2SB1443
Q4,13 : 2SA1576A
Q5,10 : DTC114YUA
Q11 : 2SB1548(P)
Q12,26,28,43 : DTA124EUA
Q15,40,41 : 2SB1188(Q,R)
Q18,30,35,38,39 : DTC124EUA
Q44 : DTC114EUA

D9 : MA8056-M
D10 : RM10ZLF
D15 : MA8062-M
D16,19,21,45,49,55 : MA3062WA
D17,18,22,23 : 1SR154-400
D20,34,35,53 : DAP202U
D27 : MA8047-M
D28,32 : HZS7A3L
D31,33,48 : DAN202U
D38-43 : DA204U
D44 : IMSA-6801
D46,47 : MA3062-M
D54 : MA8068-M

+B

DTC143TUAQ51-54 :

SIGNAL LINE
GND LINE

B LINE

X14
INTERFACE

NAVI TXD
NAVI RXD

to SVT-M700

NAVI SYNC

5L INTERFACE

ELECTRIC UNIT (X25-9542-70) (A/2)

J1

B.U.

F1

10A

GND

16

15

ACC

14

13

LMUTE
POWER

12

11

ANT

10

9

REAR R+

FRONT R+

8

7

REAR R-

FRONT R-

6

5

REAR L-

FRONT L-

4

3

REAR L+

FRONT L+

21

J2

23 24

20

20

19

19

18

16

14

12

10

8

6

4

2

12 11

+14V

34

78

R169 100

R168 4.7K

R24 1K
R23 47

R22 100

R21 47
R20 1K

10

9
8
7
6

2

13

CHCLK
CHDATAH

MUTE

RESET

REMO

M CON

M CLK

M REQ H

M DATA

M REQ C

V GND
NAVI B
NAVI G
NAVI R

AV1 R
AV 1 L
A GND
AV 2 R
AV 2 L

17

15

13

11

9

7

5

3

1

21 22

P2

J6

L1

140uH

D21

D15

BU14V
GND

CHCON
CHREQH#

516

910

C134

D10

C11

R4 10K

RRA

FRA

RRB

FRB

RLB

FLB

RLA

FLA

D16 D19

D55

CHRST

CHMUTE

CHREQC#

CHDATAC
R159 100

R158 100

0.01

0.01

13
12
11

9

C135

1000P

C139

1000P

C136

1000P

C140

1000P

C137

1000P

C141

1000P

C138

1000P

C142

1000P

D47

C17

2200u16

R143

4.7K

R145

100

50

51
99
48
98
89

R153

4.7K

R150

4.7K
R155

R157

4.7K

4.7K

1/2W

+

8.2V

D28

R13

D9

47K

10K

D31

10

11
12
13
14

IC15

+8V

220

R30

12.6V

R44
18K

0.01

C30

C33

0.047

ACC
DETECTOR

Q28

22K

22K

22K

22K

Q26

5V AVR

Q3

22K

R10 100

C8

C7

0.01

IC7

1

AXI L

2

AXI R

3

MUTE

4

CR1

D GND

5

A GND

CR2

6

CL1

7

CL2

8

AXO R

9

AXO L
HFLO
HFRO
OREF
HRLO
HRRO

SYSTEM E's+

+8V

+14V

+8V +8V

8V AVR

IC2

VIN

GND

0V

B.U.
DETECTOR

R45

Q16

47K

18K

R48

R53

9.1K

D32

+5V

D35

+5V

D34

Q1

+

10u16

28

VCC

27

SDA

26

SCL

25
24

23

CREF

22

HFL1

21

HFL2

20

HFR1

19

HFR2

18

HRL1

17

HRL2

16

HRR1

15

HRR2

8.2V

VREF

24K

R39

R38

C29

15K

13.5V

R40

4.3K

30

23

24

Q22

11

12

113

+5V

+5V +5V

C67

100u10

+
C62

47u16

+

13

14

8.2V

0V

C52 1u50

4.1V

+

C53

4.1V

C58

0.33 0.33

0V

C54

4.1V

C59

0.33 0.33

0V

C55

4.1V

C60

0.330.33

0V

C56

4.1V

0.33 0.33

0V

2

44

+8V

4.1V

4.1V

4.1V

1614131211109

15

X1

X2

VDD

XCOM

Y0

YCOMY2Y3

1

2

5

3

4

4.1V

4.1V

4.1V

4

43

1

C31

C51

0.01

5V
0V

C61

Y1

678

5V
0V

X3AX0

INH

+

220u16

L4

0V

VEE

11

9

+8V+8V+8V

12

4.7uH

P.ON 5V SW

R14
22K

Q33

NOISE
DETECTION

Q30

MUTE SW

0.01

C74

R126 10K

SOURCE SW

0V

IC13

B

AUDIO SW

VSS

0V

R34

D17

4.7K

Q12,13

P.CON
PROTECTOR

P.CON SW

Q4

R11

2.2K

+5V

26

Q30

+8V

4.1V

4.1V

4.1V

4.1V

92

Q35

22K

22K

R50
47K

D18

R43

C16

22K

23
24
25
26

27
28

29
30

31
32
33

P.CON SW

Q15

D22
D23

R31

R35

4.7K

1K

1/2W

1K

R32

Q10

R47

1K

22K

+

100u10

C72

0.015

22K

2221201918171615141312

SCL
SDA

S MUTE

NC25
GND

8.2V

VS
NC28

OUT RR
OUT LR
OUT RF
OUT LF
NC33

AC OUT R

34

R94 1K

NAV R

22K

R33

C23 0.068

1/2W

22K

C20

0.1u50
+

10K

47K

C28

0.01

D27

+8V

101

4.7K

R118

Q33

1K

R115

NC20

QUAL

MUX R

0V

3.6V0V

E-VOLUME/MPX

AC OUT L

NC36

AC IN LR

35

3637383940

16

REMO

RED

3.3u50

AC IN RR

C83

6

C24

Q13

22K

79

MUX L

4.1V

0.47

+

Q12
D20

28

C85

NC17

IC11

AC IN RF

9

V GND

1

2

3

4

0.1

4.9V

C86

+14V

80

4.5V

MP IN

MP OUT

AC IN LF

41

4.1V

0.47

7

GREEN

59

610

812

J3

21

23

0V

0V

0V

7654321

IC4

GND

B IN1

B IN2

C IN1

C IN2

C OUT

8

9

10

0V

4.9V

D33

+5V

0.1

C89

R122

4.7K

4.1V

4.5V

MPX

NC11

NC13

LEVEL

AM

AFS

PHONE+

PHONE-

NC6

CD L

CD L OUT

CD GND

CD R OUT

CD R

4.1V

V REF

C REF

TAPE L

TAPE R

42

43

44

4.1V

C99

0.47

0.47

C100

+

43

2.2u50

1

117

3

R171 4.7

NAV G

13

8

BLUE

44

19

RXD

C88

NAVIGATION INTERFACE

11

5.0V

B OUT

D IN1

12

0V

R64

100K

11
10

9
8
7
6
5
4
3
2
1

10

SYNC

A IN2

D IN2

13

5.0V

4.1V

5.0V

4.1V

4.1V

4.1V

4.1V

4.1V

D38

TXD

0V

A IN1

D OUT

14

20

MUTE
LOGIC

A OUT

VCC

5.0V

+5V

113

C39 1

3

2

R92 1K

NAV L

101

RESET SW

L3

4.7uH

C93 R132

0.47

+8V

C94

0.033

D39

4

RESET
IC

IC6

C38 0.01

Q18

22K

22K

C155

0.047u5.5

C96

150P

0.01

C97

C103

47u16

+

R133

+

3

+5V

4.7K

10K

C36

C32 1

0.01

D41

C104

0V

4

1

4.9V

C37

0.22

VSS

OUT

C102

3

2

5.0V

47u16

1

0.22

NC

VDD

+5V

+

+

+14V

IMBALANCE-BALANCE CONVERT

FLA

+

C165

R197

10u16

100

IC21

4.7K

R196

C166

R198

10u16

100

FLB

FRA

R205

100

C171

10u16

+

+

IC22

4.7K

R204

C172

R206

10u16

100

FRB

RLA

R213

100

C177

10u16

+

+

IC23

4.7K

R212

16

RLB

RRA

R214

100

R221

100

C178

10u16

C183

10u16

+

+

IC24

4.7K

R220

R222

C184

100

10u16

RRB

+

+14V

8.2V

8.2V

8.2V

8.2V

8

1

4.1V

8

1

4.1V

8

1

4.1V

8

1

4.1V

C163

V+

AOUT

C169

V+

AOUT

C175

AOUT V+

C181

V+

AOUT

560P

7

R195

4.7K
C164

560P

560P

7

R203

4.7K
C170

560P

560P

7

R211

4.7K
C176

560P

560P

7

R219

4.7K
C182

560P

BOUT

BOUT

BOUT

BOUT

R194

4.7K

4.1V 4.1V

5

6

BIN-

BIN+

V-

AIN+

AIN-

2

3

4

4.1V

4.1V

C162

10u16

+

R202

4.7K

4.1V 4.1V

5

6

BIN-

BIN+

V-

AIN+

AIN-

2

3

4

4.1V

4.1V

C168

10u16

+

R210

4.7K

4.1V 4.1V

5

6

BIN-

BIN+

V-

AIN+

AIN-

2

3

4

4.1V

4.1V

C174

10u16

+

R218

4.7K

4.1V 4.1V

5

6

BIN-

BIN+

V-

AIN+

AIN-

2

3

4

4.1V

4.1V

C180

10u16

+

C185 0.01R192 47KC186 0.01R200 47KC187 0.01R208 47KC188 0.01R216 47K

0V

R193

3.3K R191

0V

R201

3.3K R199

0V

R209

3.3K R207

0V

R217

3.3K R215

4.7K

1.8K

4.7K

1.8K

4.7K

1.8K

4.7K

1.8K

+8V

+8V

+8V

+8V

Q51

C161

10u16

Q52

C167

10u16

Q53

C173

10u16

Q54

C179

10u16

FL

+

FR

+

RL

+

RR

+

+8V +8V

P.ON 14V SW

Q6Q5Q11

22K

R25

680

R26

R52

3.3K 1/2W

R54
15K

13

Q26,28

MUTE SW

+14V +14V+14V

W12

C12

220u16

C44

0.1

4.1V

C45

0.1

4.1V

C46

0.1

4.1V

C47

0.1

4.1V

4.1V

FL

4.1V

FR

4.1V

RL

4.1V

RR

D49

68
65

+8V

IC15

ISOLATION

R131

6.8K

AMPLIFIER

D54

C98 0.01

R130 1K

C101 0.01

C154 10u16

+

R140

R137

R134

C107

4.7u50

10

+

C106

330u6.3

4.7
+

D53

1K

R178

C105

4.7u50

10

+

+8V

R177 100K

D43D42D40

IC14

5

B IN+4V-

6

B IN-

7

B OUT

4.1V

8

V+

8.2V

BUFFER

0V

A IN+

A IN-

A OUT

C95

10K

+

R179

10u16

3
2
1

4.1V

+8V

66

67

88

100

2
1

D46D45

C91 0.01

4.1V

4.1V

4.1V

0V

4

1

2

IN1

VM1

GND

OUT1

IN2

VM2

VCC

OUT2

63

5

8

7

+8V

4.1V

4.1V

4.1V

A B C D E

V

V

V

V

N

R

3

R

3

R
3

R

3

DTC114YUA
DTC143TUA

1

2SA1576

2SB1188

2SB1548

2

2SB1443

IC2 : M5237ML
IC4 : HD74HC02FP
IC6 : S-80842CNNB
IC7 : TDA7401
IC9 : 70F3033AGC6P8
IC11 : TDA7407
IC13 : TC4052BF(N)
IC14,17,21-24 : NJM4565M-TE2
IC15 : M5280FP
IC16 : TDA7479D

Q1,16,22,33,42,45 : 2SC4081
Q3,6 : 2SB1443
Q4,13 : 2SA1576A
Q5,10 : DTC114YUA
Q11 : 2SB1548(P)
Q12,26,28,43 : DTA124EUA
Q15,40,41 : 2SB1188(Q,R)
Q18,30,35,38,39 : DTC124EUA
Q44 : DTC114EUA

D9 : MA8056-M
D10 : RM10ZLF
D15 : MA8062-M
D16,19,21,45,49,55 : MA3062WA
D17,18,22,23 : 1SR154-400
D20,34,35,53 : DAP202U
D27 : MA8047-M
D28,32 : HZS7A3L
D31,33,48 : DAN202U
D38-43 : DA204U
D44 : IMSA-6801
D46,47 : MA3062-M
D54 : MA8068-M

+B

DTC143TUAQ51-54 :

SIGNAL LINE
GND LINE

B LINE

3

2SC4081

DTA124EUA
DTC114EUA

4

DTC124EUA

TC4052BF

DAN202U

DAP202U
DA204U

M5237ML

X14
INTERFACE

to SVT-M700

NAVI TXD
NAVI RXD

NAVI SYNC

5

TDA7479D

M5280FP
NJM4565M-TE2

ELECTRIC UNIT (X25-9542-70) (A/2)

J1

B.U.

F1

10A

GND

16

15

ACC

14

13

LMUTE
POWER

12

11

ANT

10

9

REAR R+

FRONT R+

8

7

REAR R-

FRONT R-

6

5

REAR L-

FRONT L-

4

3

REAR L+

FRONT L+

21

J2

23 24

20

20

19

19

MUTE

RESET

REMO

M CON

M CLK

M REQ H

M DATA

M REQ C

V GND

NAVI B
NAVI G
NAVI R

AV1 R

AV 1 L
A GND
AV 2 R

AV 2 L

17

15

13

11

9

7

5

3

1

21 22

R169 100

18

R168 4.7K

16

R24 1K
R23 47

14

R22 100

R21 47

12

R20 1K

10

10

9
8

8

7
6

6

4

2

+14V

L1

140uH

D15

BU14V
GND

CHCON
CHREQH#

D10

R4 10K

RRA

FRA

RRB

FRB

RLB

FLB

RLA

FLA

D21

D16 D19

D55

C134
C11

0.01

0.01

13
12
11

9

C135

1000P

C139

1000P

C136

1000P

C140

1000P

C137

1000P

C141

1000P

C138

1000P

C142

1000P

C17

2200u16

R143

4.7K

R145

100

+

+14V

IMBALANCE-BALANCE CO

50

51
99
48
98
89

16

D49

68
65

FLA

FLB

FRA

FRB

RLA

RLB

RRA

RRB

R197

100

R198

100

R205

100

R206

100

R213

100

R214

100

R221

100

R222

100

+14V

C165

10u16

C166

10u16

C171

10u16

C172

10u16

C177

10u16

C178

10u16

C183

10u16

C184

10u16

+

R196

+

+

R204

+

+

R212

+

+

R220

+

4.7K

4.7K

4.7K

4.7K

IC21

IC22

IC23

IC24

8.2V

8.2V

8.2V

8.2V

8

1

4.1V

8

1

4.1V

8

1

4.1V

8

1

4.1V

C163

V+

AOUT

R195

C164
560P

C169

V+

AOUT

R203

C170
560P

C175

AOUT V+

R211

C176
560P

C181

V+

AOUT

R219

C182
560P

4.7K

4.7K

4.7K

4.7K

R194

560P

4.7K

4.1V 4.1

7

BOUT

AIN-

2

R202

560P

4.7K

4.1V 4.1

7

BOUT

AIN-

2

R210

560P

4.7K

4.1V 4.1

7

BOUT

AIN-

2

R218

560P

4.7K

4.1V 4.1

7

BOUT

AIN-

2

6

BIN-

AIN+

3

4.1V

C162

10u16

+

6

BIN-

AIN+

3

4.1V

C168

10u16

+

6

BIN-

AIN+

3

4.1V

C174

10u16

+

6

BIN-

AIN+

3

4.1V

C180

10u16

+

4.1V

4.1V

4.1V

4.1V

5

BIN+

V-

4

0V

5

BIN+

V-

4

0V

5

BIN+

V-

4

0V

5

BIN+

V-

4

0V

P2

D47

6

CAUTION : For continued safety, replace safety
critical components only with manufacturer's rec-

5L INTERFACE

ommended parts (refer to parts list).

Indicates safety critical components. To re­duce the risk of electric shock, leakage-current
or resistance measurements shall be carried out
(exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to
the customer.

7

• DC voltages are as measured with a high

impedance voltmeter. Values may vary slightly
due to variations between individual instru-

J6

12 11

34

2

78

516

910

13

CHREQC#

CHDATAC

CHCLK
CHDATAH

CHRST

CHMUTE

R159 100
R158 100

R153

4.7K

R150

4.7K
R155

4.7K

R157

4.7K

R140

R137

R134

C107

4.7u50

10

+

C106

330u6.3

4.7
+

D53

1K

R178

R177 100K

C105

4.7u50

10

+

+8V

5
6
7

8

IC14

8.2V

D43D42D40

BUFFER

B IN+4V­B IN-

0V

B OUT

A IN+

4.1V

A IN-

V+

A OUT

66

67

88

100

2
1

D46D45

ments or/and units.