JVC KB2U Schematic

SCHEMATIC DIAGRAMS

COMPACT COMPONENT SYSTEM

MX-KB2,MX-KB15

CD-ROM No.SML200408

Contents

Wiring diagram Block diagram Standard schematic diagrams Printed circuit boards

Area suffix

C ------------------------- Canada

2-2 2-4 2-6

2-18 to 22

No.MB287SCH

2004/8

In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.

< MEMO >

2-1

C

8

0

2

Wiring diagram

AC CORD P/N.: 30-00300-00L (AC 120V - 60 Hz)

FM ANT

Tuner board

P/N:11-01002-03

P/N:20-61030-00

3 PIN UL2547#30 P=2 L=360 mm

A PLAY HEADER

LOGIC DECK CONTROL BUS

AUX INPUT

SJ500

CN504

AUX input board

J601J602

AM ANT

TU-R

AGND

TU-L

+12V

+5.6V

DGND

STEREO

CD-EN

PLL-DAT

PLL-CLK

PLL-PER

RDS-CLK

RDS-DAT

CN601

P/N:20-61070-00 7 PIN UL2854#30 P=2L=360 mm

LOGIC DECK

B R/P HEADER

P/N:25-61260-80 13 PIN UL2896 P=1.25 L=260 mm

P/N:11-01002-05

Transformer

P/N:15-01002-00

P/N:20-61030-02

3P UL547#30 P=2 L=300 mm

P/N:20-61133-01

13P UL2547+2651 P=2 L=370 mm

CN202

CN101

L-IN AGND R-IN

R.CHR.CH+ GND L.CH+ L.CHGND E-S

CN103

GND NIL SOL-B B-M-SW B-T-SW PHO-B REC-SW T-MOTOR A-T-SW GND PHO-A SOL-A

A-M-SW

TU-R

AGND

P/N:20-61073-11

7P UL2547+2651 P=2 L=250 mm

TU-L

+12V

+5.6V

DGND

STEREO

CD-EN

PLL-DAT

PLL-CLK

PLL-PER

RDS-CLK

RDS-DAT

CN205

CN201

AC7

CN803

ECO HP-M MUTE STBY L-OUT GND R-OUT

AC6

P/N:2 2 PIN

AC9

CN110

L-IN

R-IN

GND

Main board

P/N:11-01002-00

AC2

AC1

-27V

KEY2

JOG-B

JOG-A

IR-IN

D-STB

D-CLK

D-DAT

+5.6V

CGND

CN20

OL-DET

OL-PROT

KEY1

CN207

2-2

P/N:25-83100-02

2PIN UL2651#28 P=2 L=100 mm

Display & Key

CN511

CN510

Top left key

P/N:11-01002-12

Left key

P/N:11-01002-10

2PIN UL2468#26

P/N:25-94060-80

CN509

CN503

CN505

IR1 GND IR3 LED+

P/N:20-41130-00 13 PIN UL2651#28 P=2 L=

CN500

AC1

AC2

-27V IR-IN

KEY2

KEY1

+5.6V

CGND

D-STB

D-CLK

D-DAT

JOG-A

JOG-B

Main key

P/N:11-01002-09

P/N:20-41040-00

4 PIN UL2651#28 P=2 L=50 mm

AC1

P/N:20

61073

11

-

7P UL2547+2651 P=2 L=250 mm

CN803

AC7

AC6

CN802

AC9

Power board

P/N:11-01002-16

P/N:20-42110-00

11PIN P=2.5 L=250 mm

AC5

AC10

AC11

AC8

AC3

CN861

CN801

CN804

GND1

P/N:20-45041-80

4P UL1007#20 L=250 mm

CN901

P/N:20-41051-37

5P UL2651#28 L=500 mm

Speaker board

P/N:11-01002-06

CN902

Headphone board

P/N:11-01002-05

R

L

CN201

ECO

CN205

110

Main board

P/N:11-01002-00

HP-M MUTE STBY L-OUT GND R-OUT

OL-DET

OL-PROT

+9V

+5V

AC1

AC2

-27V

+12V

+5.6V

AGND

DGND

CGND

P/N:20-41020-00 2 PIN UL2651#28 P=2 L=250 mm

P/N:20-51061-20 6 PIN UL1571#30 P=2 L=100 mm

CN208

FM-

SLT

DM-

FM+

DM+

GND

CN402

16.V-CEN

15. COM

8. GND

14. E

13. D

12. A

11. B

10. C

7. LD

6. VR

5. PD

4. F+

3. T+

CD DECK

P/N:25-61135-80

CN401

16 P Ul2896 P=1 L=135 mm

PICK UP

3CD MODULE

9. F

2. T-

1. F-

CN204

SW2

GND

SW1

RL-

RL+

+5V

EMT

CATH

MO-

CN206

AC2

CGND

-27V

KEY1

KEY2

JOG-B

JOG-A

IR-IN

D-STB

D-CLK

D-DAT

+5.6V

CN207

RL-

+5V

RL+

MO-

SW1

EMT

SW2

MO+

GND

CATH

P/N:20-41101-24

10 PIN UL2651#28 P=2 L=250 mm

Motor board

MO+

CW3

P/N:20-41130-00 13 PIN UL2651#28 P=2 L=250 mm

CN500

AC1

AC2

-27V IR-IN

KEY2

KEY1

+5.6V

CGND

D-STB

D-CLK

D-DAT

JOG-A

JOG-B

Main key

P/N:11-01002-09

P/N:20-41040-00

4 PIN UL2651#28 P=2 L=50 mm

Display board P/N:11-01002-07

P/N:25-83050-05

5 PIN UL2651#28 P=2 L=50 mm

CN501

KEY1

KEY2

CGND

JOG-A

JOG-B

CGND

KEY1

KEY2

CN502

JOG-A

JOG-B

CN506

P/N:25-94060-80 2 PIN UL2468#26

Top light key

P/N:11-01002-13

Right key board

P/N:11-01002-11

CN512

CN508

Remote receive

P/N:11-01002-14

CN514

CN513

P/N:25-83100-02

2P UL2651#28 P=2 l-100 mm

2-3

Block diagram

0

O

5

d t

e

Key board section

CD2

S501

VFD CONTROL / DRIVER

SC6122

REMOTE RECEIVER

ENCODE VOLUME

45

EN500

321

+9V

U101

TA8189 4CH Pre+Rec AMP with ALC

BIAS OSC

R/P SWITCH CIRCUIT

LOGIC DECK-TP

IC602

TA2149BFN

IF

IC600

TC9257 PLL

JOG-A JOG-B

H CASS A L CASS B

REC-E H-PLAY

L-REC

+9V

VFD

KEY2

KEY1

U500 SC6311

KEY SCAN

CLK

DATA

CPU

87EP26F-4K76

STB

REC SIGNAL

OUTPUT

Filament

AC3.3V

+5V

STANDBY LED

GVSW

CDR-W GAIN

CONTROL

+5V

VCC

DATA AND CONTROL

U406

TC74HC14

STB DATA

CK

L CH

R CH

+5V

R503

680R

LED500

BUS

L CH

R CH SDA

REQ

SCL

L CH

R CH

U201 TC9422F

SYSTEM E.VOLUME

(Tone control input

selector Main volume)

SYS_MUTE

PICKUP

EDA

U402 TA2153

RF AMPLIFIER

RF

DIGITAL SERVO

1 BIT D/A CONVERTER

U404 TC94A02F

CD ROM DECODE

MP3 DECODE

D/A CONVERTER

D803

IN4001

F

B

C

LD

FEO

RFCT

RFPP

U401 TC9462

+9V

R832

10k

R83110k

Q812

8050

LIMIT SW

Q813

8050

F-

+5V

FOO TRO DMO

FMO

ADDRESS BUS

DATA BUS

VDD 3V

VDOT 3.3V

+VC

IC801 STK402-050

LOW LOGIC DETECT

PROTECT ENABLE

Q860,Q861,Q864,Q865

DETECT

OVERLOAD

-VC

ENABLE

PROTECT

DIGITAL SERV

When use hea

the control vol

T-

T+

F+

U403 TA2

U405 SRAM

128k x 8 (1

logic low l

2-4

AUX INPUT

L CH

R CH

+9V

0 2

n

TO 3CD DECK

T+

F+

403 TA2092N

L SERVO DRIVER

5 SRAM (SDJ) 8k x 8 (15ns)

+9V

VDD 3.3V

FM-

FM+

123456

CN402

123456

TO CD DECK

DM-

DM+

+VC

-VC

SLT

D849-D852

R241

10k

M-

M+

R242

IN2

U203 TA7219S

BRIDGE DRIVER

IN1

10k

EMIT

R233

10k

ML+

IN1

U202 TA7219S

BRIDGE DRIVER

IN2

ML-

R232

10k

3CD CHANGER DRIVER SECTION

SW1

SW2

CN204

1

2

3

4

5

6

7

8

9

10

AC PLUG

MO+

MO-

CATH

EMIT

+5V

RL+

RL-

SW1

GND

SW2

+12V

+9V

HEADPHONE

CE803

100uP/50V

Q862

8550

+12V

D806-D809

L7809CV

Q803

D845

IN4001

U803

L7806CV

AC7

AC10

AC12

AC11

AC8

AC9

AC5

T802

T06910A

1

7

86543211

!

TRANSFORMER

10

AC3

AC4

9

!

F804

T2.0A/250V

R862

10k

use headphone

ontrol voltage is

gic low level

R877

22k

Q867

8050

GRID VOLTAGE -27V

AC 3.3V

FILAMENT VOLTAGE

+6V TO CPU

2-5

PRE_AMP

AMP STK402-050

Standard schematic diagrams

Primary / Power amp section

2-6

PROTECT CIRCUIT

!