JVC KSAX-7700 Schematic

KS-AX7700

SCHEMATIC DIAGRAMS

POWER AMPLIFIER

KS-AX7700

CD-ROM No.SML200303

Area Suffix

J	Northern America

Contents

Block diagrams	2-1
Standard schematic diagrams	2-2
Printed circuit boards	2-8~9

COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.

No.49809SCH

2003/03

KS-AX7700

Safety precaution

!	Burrs formed during molding may be left over on some parts of the chassis. Therefore,
	pay attention to such burrs in the case of preforming repair of this system.

D

E

F

INPUT

BOOST 0-12dB

CROSSOVER

VARIABLE/INV.CIRCUIT(Gain1)/Amplifier

50-250Hz 12dB/OCT VARIABLE

POWER

AMP

R-IN

3

1

3

1

3

1

3

1

2

1

2

1

SW101A

AMP

LPF

R-OUT

U101

7

U102

U106

2

2

U103

U104

U105

-A

-A

-A

-A

-A

-A

HPF

6

VR101B

VR103A

VR102A

VR102C

OFF

Q142-Q146

Q148,Q149

L-OUT

Q152

Q161-Q166

L-IN

6

3

5

6

6

LPF SW101B

5

U101

7

6

7

U206

1

1

U103

7

7

7

U102

1

U104

U105

HPF

-B

-B

-A

-B

-B

-B

7

VR101A

VR103B

VR102B

VR102D

OFF

Q242-Q246

HI-INPUT

Q248,Q249

Q252

R

Q150

Q261-Q266

L

Q250

TRANS

MUTE

CCFL+12V

INVERTER

LOAD

CCFL

POWER

POWER

& REGULATOR

CONTROL

POWER

board

F01,F02

Q790

CONTROL

REGULATOR

INPUT

Q780

PROTECT

+12V

T1

+/-15V

Q730,Q731

D.C.

Q701

Q745-Q747

U703

REM

Q702

U701

VCC

Q171-Q176

Q755-Q757

U704

VEE

Q272

VR701

Q705

-708

diagram Block

G
1-2		AX7700-KS

KS-AX7700

Standard schematic diagrams

Amp section

BOOST 0-12dB(45Hz) VARIABLE

CROSSOVER(50-250Hz 12dB/OCT VARIABLE)

5

SUB-2

3

C121

C123

104P

104P

R115

SUB-1

10K

R-IN

3

C109

47P

U101-A

RCA01A

C110

C111

C112

C101

R102

C105

NJM2068LD

SY-SW0406-82

8

R108

VR101B

R114

473(M)

473(M)

2.2/50V

4.7/50V

22KF

100P 3

1

7

1K

20KB C125

U102-A

U106-A

2

2

10K

R101

R103

2

4.7/50V

8

NJM2068LD

VR102A

R116

VR102C R118

3

NJM2068LD

8

22K

22KF

1

R134

3

2

50KC

15K

2

50KC

15K

2

2

1

1

1

1

F

1K

2

3

3

3

R106

C102

R112

R135

56KF

C107

R113

4 U103-A

4 U104-A

4

4.7/50V

30KF

1K

R136

470P

R109

1K

C117

47P

10K

NJM2068LD

NJM2068LD

C106

1K

R130

22P

C108

20KB

R117 10K

U105-A

R137

22K

33P

VR103A

NJM2068LD

4

R105 C104

20K

R110 R111

56KF

22P

C115

C113

15K

11KF

224(M)

R139

R138

2.2/50V

C11

5.6K

330K

2.2/

9

C116

8

183(M)

CHDW1140-N

8

5

C161

R188

7

6

4.7/50V

150KF

5

4

R140

4

5

8

9

R131

+

680K

22K

R160

R

22KF

U106-B

-

NJM2068LD

C160

R166

4.7/50V

150KF

C124

C345

C122

104P

104P

470/16V

C162

C163

102P

102P

C262

C263

102P

102P

-

M

3

C260

R266

L

4.7/50V

150KF

+

R260

C261

R288

22KF

4.7/50V

150KF

R21510K

L-IN

C20947P

RCA01B

U101-B

C208 24P

C210

C211

C212

NJM2068LD

C201

R202

R214

473(M)

473(M)

2.2/50V

SY-SW0406-82

8

R208

VR101A

4.7/50V

22KF

R212 56KF

10K

5

7

6

1K

20KBC225 R210

R234

U206-A

1

1

VR102B

R216

VR102D

R218

R201

R203

6

4.7/50V15KF

NJM2068LD8

R213

6

50KC

6

15K

6

22K

22KF

6

7

1K

3

1

10K

7

15K

7

50KC

7

FLAT

5

2

5

5

5

C202

C205

R206 56KF

C207

4

R235

4

4

4

4.7/50V

100P

470P

R209

U102-B

1K

U103-B

U104-B

U105-B

R211

NJM2068LD

C217 47P

NJM2068LD

NJM2068LD

NJM2068LD

C206

1K

VR103B

R21710K

22P

12K

20KB

R236

R237

2

C213

1K

20K

R205

C204

2.2/50V

56KF

22P

C215

2

224(M)

R239

R238

5.6K

330K

R230

R23

22K

22K

C216

8

183(M)

5

7

6

R240

680K

U206-B

NJM2068LD

BOOST 0-12dB(45Hz) VARIABLE

CROSSOVER(50-250Hz 12dB/OCT VARIABLE)

1

2-2

A

B

C

D