JVC KD-AR370J, KD-G320J, KD-G421E, KD-G421EX, KD-G421EY Diagram

SCHEMATIC DIAGRAMS

CD RECEIVER

KD-AR370J,KD-G320J,KD-G421E

KD-G421EX,KD-G421EY,KD-G421EU

KD-G424UI,KD-G425UT,KD-G425UH

KD-G425UN,KD-G425U,KD-G427EE

CD-ROM No.SML200601

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

Contents

Block diagram Standard schematic diagrams Printed circuit boards

2-1 2-5 2-29 to 31

No.MA245SCH

2006/1

Block diagram

A

D

A

S

R

o

(For KD-AR370,KD-G320,KD-G424 and KD-G425)

PICK UP

FOCUS &

TRACKING

COIL

LOAD&FEED

MOTOR

POSITION SET

SWITCH

SPINDLE

MOTOR

SW1, SW2

VF1,VF2,VT1,VT2,LD,MD,VREF

TRACKING+,TRACKINGFOCUS+,FOCUS-

FEED+ FEED-

PSW

SPINDLE+ SPINDLE-

SW1, SW2

Function section

IC501

BTL

DRIVER

CN503 CN503

SPINDLE+,SPINDLEFEED+,.FEEDTRACKING+ TRACKING-

CN501

FOCUS+,FOCUS-

CD mechanism control secti

CN502

VF1 VF2 VT1 VT2 MD LD VREF PSW

FOP TRP TRVP VREF SPOUT

IC521

RF AMP

MLD MDAT MCLK NRST NPW

LCD & Key control section

D630

POWER LED

S601 to S618 KEY MATRIX

IC661

LCD DRIVER

COM1 to COM3 S1 to S52

LCD1

LCD DISPLAY

ACC5V

KEY0 KEY1 KEY2

LCD.CL LCD.DA LCD.CE

D631 to D648

D650,D651

LIGHTING

DISPLAY

DIMMEROUTILL10V

REMOCON

IC681

REMOCON

D652,D653

DIMMER

Q670,Q671

DIMMER

CONT.

ENC1 ENC2

JS686

ENCODER

CJ601

KEY0 to 2 LCD.CL LCD.DA LCD.CE REMOCON

CN701

ENC1,ENC2 DIMMEROUT

1.5V

OUTL OUTR

IC581

CD L.P.F.

IC981

1.5V REGULATOR

STAT IRQ

VDD5V

IC523

I

2-1

ANT

Main amplifier section

J1

TU1

FM/AM

TUNER

TU_L TU_R

rol section

MLD MD ATA MCLK NRST NPWDOWN

STAT

IC523

IRQ

LM MSW

SW1 SW2 PSW

SM SQ EO IFC IFC.CONT FM.OSC S.METER

IC701

CPU

MUTE SUBMUTE

RESET

JBUS.SI JBUS.SO JBUS.IO JBUS.SCK JBUS.INT

Q781, Q782,Q783

MUTING

Q301

SDA SCL

E.VOLUME

IC775

RESET

CD.L CD.R

LINEOUTMUTE

IC161

Only for KD-AR370 and KD-G320

Q321, Q331

FLO

LINE OUT

FRO

RLO RRO

MUTE

OUTLF,OUTRF OUTLR,OUTRR

STANDBY

MUTING

Q341, Q351

LINE OUT

MUTING

POWER

EACH BLOCK

SW5V,ACC5V VDD5V.CD5V 9V,ILL10V

STBY OFFSET

IC901

REGULATOR

ANT

D906,D907

PWR.ANTENA

Only for KD-G424 and KD-G425

TEL_MUTE

Q891

TEL.MUTE

Only for KD-AR370

IC801

JVC BUS

IC301

AMP.

ACC

TEL.MUTE

SCK

LF+,LFRF+,RFLR+,LRRR+,RR-

LF RF

LR RR

CH_L CH_R

LINE OUT FRONT

J321

LINE OUT REAR

CN901

SPK BATTERY

J801

CHANGER CONTROL

JBUS.SI

2-2

Block diagram

A

D

A

S

R

o

(For KD-G421 and KD-G427)

PICK UP

FOCUS &

TRACKING

COIL

LOAD&FEED

MOTOR

POSITION SET

SWITCH

SPINDLE

MOTOR

SW1, SW2

VF1,VF2,VT1,VT2,LD,MD,VREF

TRACKING+,TRACKINGFOCUS+,FOCUS-

FEED+ FEED-

PSW

SPINDLE+ SPINDLE-

SW1, SW2

Function section

IC501

BTL

DRIVER

CN503 CN503

SPINDLE+,SPINDLEFEED+,.FEEDTRACKING+ TRACKING-

CN501

FOCUS+,FOCUS-

CD mechanism control secti

CN502

VF1 VF2 VT1 VT2 MD LD VREF PSW

FOP TRP TRVP VREF SPOUT

IC521

RF AMP

MLD MDAT MCLK NRST NPW

LCD & Key control section

D630

POWER LED

S601 to S618 KEY MATRIX

IC661

LCD DRIVER

COM1 to COM3 S1 to S52

LCD1

LCD DISPLAY

ACC5V

KEY0 KEY1 KEY2

LCDCL LCDDA LCDCE

D631 to D648

D650,D651

LIGHTING

DISPLAY

REMOCON

IC681

REMOCON

D652,D653

DIMMER

Q670,Q671

DIMMER

CONT.

DIMOUTILL10V

ENC1 ENC2

JS686

ENCODER

CJ601

KEY0 to 2 LCDCLK LCDDA LCDCE REMOCON

CN701

ENC1,ENC2 DIMOUT

1.5V

OUTL OUTR

IC581

CD L.P.F.

IC981

1.5V REGULATOR

STAT IRQ

VDD5V

IC523

I

2-3

l section

MLD MD ATA MCLK NRST NPWDOWN

IC523

ANT

LM MSW

SW1 SW2 PSW

STAT IRQ

Main amplifier section

J1

TU1

FM/AM

TUNER

FSU AFS Q_OUT SSTOP TUSDA TUSCL

IC701

CPU

TU_L TU_R

RDSDA RDSCL

ERCLK ERDI

RESET

Q781, Q782

MUTE

IC71 RDS

DETECTOR

IC771

EPROM

IC775

RESET

MUTE

DRIVER

MUTE

VSCL VSDA

MPXW

Q301

CD_L CD_R

FL_OUT,FR_OUT RL_OUT,RR_OUT

IC171

E.VOLUME

POWER CDON

Q341, Q351

LINE OUT

MUTING

MUTE

IC301

POWER

AMP.

STANDBY

EACH BLOCK

SW5V,ACC5V VDD5V.CD5V 9V,ILL10V

IC901

REGULATOR

ACC

RLO,RRO RLO,RRO

LF+,LFRF+,RFLR+,LRRR+,RR-

LINE OUT REAR

CN901J321

SPK BATTERY

STEERING

Only for KD-G421

Q891

TEL_MUTETEL_MUTE

TEL.MUTE

SI,SO,I/O,SCK,INT SI/SO

IC801

JVC BUS

CH_L CH_R

J801

CHANGER CONTROL

CN761

STEERING REMOTE

2-4

Standard schematic diagrams

3

Main section (for KD-AR370,KD-G320,KD-G424,KD-G425)

J1 QNB0190-001

R31

R32

R33

1.5k

2SC3928A/QR/-X

C33

2.2/50

0.001

C32

Q31

2SC3928A/QR/-X

Q32

R34

1k

NPWDOWN

CD8V

CD_R

CD_L

MSW

NRST

STAT

MDATA

MCLK

R35

10k

220/10

R36

470

C31

9V

SW1 SW2 PSW

LM

IRQ

MLD

TU1

QAU0312-002

L1

4.7u

3.3K

R91

MONO

STAT

10k

R2

R4

SEEK/STOP

JBUS.IO

JBUS.SCK

4.7k

R726

R725

C97

C98

C99

10k

Q1

RT1N141C-X

JBUS.SI

JBUS.SO

4.7k

R724

R723

R81

0.1

0.01

82pF

D782

UDZW10B-X

IFC.CONT

0.1

C715

C782

RT1P141C-X

R721

3.3K

0.0068

C92

C82

47/16

Q782

1SS

RT

D783

1SS355W-X

LINEOUTMUTE

47k

1k

1SS355W-X

D2

R13

D4

2.2k

220p

C1

2SA1365/F/-X

10k

1SS355W-X

RT1N141C-X

10k

R752

0.1/50

47/16

C2

C3

Q5

R12

Q4

10k

R754

R37

E0

R3

10

0

1SS355W-X

D701

C17

C12

Q6

2SA1530A/QR/-X

D3

1SS355W-X

R715

1SS355W-X

D702

D703

D704

1SS355W-X

D1

R14

47k

0.022

C4

1k

C16

R11

10k

DETACH

10k

R711

FM/AM

47K

R743

MSW

R10

5.1k

R742

100

R1

0.01

220/10

C6

C9

C13

10

FM.OSC

NPWDOWN

0.027

C81

8.2k

0 22k

47k

C91

S.METER

LCD.CE

3.3k

R701

120p

C8

IFC

LCD.SCK

3.3k

R709

0.01

C11

MA111-X

LCD.SO

3.3k

R708

0.1

C15

Q2

RT1N141C-X

D6

MLD

MCLK

SD/ST

MDATA

0.1/50

C7

R6

R5

R16

IRQ

R710

QGZ1601J1-15

CN701

C711

0.1

C98

0.1

UDZW6.2B-X

C713

D712

D711

UDZW6.2B-X

D721

D714

D713

UDZW6.2B-X

D716

D715

D717

DETACH

ACC5V

REMOCON

DIMMEROUT

LCD.SCK

LCD.SO

LCD.CE

UDZW6.2B-X

D718

D719

D720

ENC1

ENC2

KEY0

KEY1

KEY2

TEL-M

LM

C702

0.01

NRST

DIMMEROUT

SCL

SDA

VOLMUTE

SUBMUTE STBY OFFSET

10k

R751

R719

R712 R713

R760

10k

R753

IC701

LC723784-9D19

0

4.7K

2.2K

R762 R763

1K

R764

100

47k

10K

R716

R717

R718

R703

R704

47k

10k

47k

10K

R705

R706

R722

SW1

SW2

PSW

ENC2

ENC1

IFC.CONT

SD/ST

4.7k

4.7K

R727

R728

JBUS.INT

REMOCON

FM/AM

MONO

SEEK/STOP

MUTE

R749

R733

R732

R730

R731

R729

R756

R755

S.METER

47k

1K

10K

47k

2-5

MONO

OCO

10k

R2

SEEK/STOP

STAT

JBUS.IO

4.7k

R726

4.7K

R728

JBUS.INT

FM/AM

R4

10k

Q1

RT1N141C-X

JBUS.SO

JBUS.SCK

4.7k

R724

R725

MONO

SEEK/STOP

TU1

QAU0312-002

R91 R81

C97

0.01

C98

82pF

C99

D782

UDZW10B-X

IFC.CONT

JBUS.SI

4.7k

R723

MUTE

0.1

C715

3.3K

0.0068

C82

C782

47/16

Q782

RT1P141C-X

47k

R721

R749

R733

R732

R730

R731

R729

R756

R755

S.METER

1SS355W-X

RT1P141C-X

D783

1SS355W-X

47k

1K

10K

47k

3.9K

0.0068

R92

R82

C92

D784

Q783

LINEOUTMUTE

SUBMUTE

R748

47k

R740

R739

R736

3.9K

C83

Q781

RT1P141C-X

MUTE

X701 QAX0406-001Z

D706

1SS355W-X

10k

4.7k

R735

C703

C704

4.7k

R737

1/50

C93

FM.OSC

R741

KEY0

KEY1

KEY2

4.7k

R738

FLO

1SS355W-X

100/10

C909

VOLMUTE

100/10

C908

CH.R

0.01

C907

C166

C783

R164

C181

0.082

R801

R802

JBUS.SI

FLO

47k

4.7/25

1/50

4.7k

R903

1SS355W-X

R804

C182

9.1k

R901

FRO

RLO

47K

R172

C175

4.7/25

C163

0.47

IC161

TDA7419-X

47k

R892

D891

1SS355W-X1k1SS355W-X

C891

0.1

Q902

47k

R909

Q903

2SA1530A/QR/-X

R891

27K

LINEOUTMUTE

RRO

MEMORY.IN

J801 QNZ0095-001

CH.L

RRO

C164

0.47

D892

20k

R908

C895

47k

R895

D903

1SS355W-X

R907

1K

R906

R905

SCK

SCL

SDA

Q895 RT1N141C-X

0.1

12K

0.01

C910

1/50

C781

220/6.3

D781

1SS355W-X

CD_L

CD_R

2.2/50

C183

Q891

RT1N141C-X

2SC3928A/QR/-X

C184

R910

22p

27p

EO

47k

IFC

47K

R707

C716

0.1

TEL-M

C705

10/16

R745

47k

C701

220/6.3

L701

4.7u

VDD

220/10

C911

D331

D321

D351

D341

R803 100

47k

1/50

22/16

C904

22k 100k

JBUS.SO

R174

C176

22/16

C905

R331

820

R335

2.2K

R325

2.2K R321

820

R351

820

R355

2.2K

R345

2.2K R341

820

C801

R809

IC801

SN74AHC126NS-X

JBUS.IO

RLO

FRO

47K

47k

R162

C165

4.7/25

C194

C915

10/16

CRS03-X

C919

D907

D906

0.047

10/16

CRS03-W

R332

100

C802 100p

0

R352

R342

R322

100

10K

100/10

C191

R807

R173

C913

C331

100P

C321 100P

C351

100P

C341 100P

4.7

R811

R810

100k

22k

100

47K

R808R805

0.22

JBUS.INT

JBUS.SCK

47k

R806

100k

C168

R166

0.47

0

C312

C313

C169

R167

0.47 0

C179

R177

0.47

0

C314C315

C178

R176

0.47

0

C902

0.01

C901

2700/16

!

D901

1N5401-F64

IC901

!

AN80T71

C916

2.2/50

C304

0.022

100P

C319

0.022

100P

C309 100/16

100P

C323

0.01 R315

7.5K

C303

0.022

D904

D905

L901

QQR0703-001

R902

RF+

4.7/25

RF+

RR+

LR+ LF+

CRS03-W

C914

RF-

RR-

LR-

CRS03-W

LF-

1k

C363

C305

0.1

C302

R303

R302

LR+

0.1

C316

0.1

LR-

0.1

LF+

R364

C310 10/16

J321

R361

RF-

R911

R363

C361

2.2

LF-

C308

2.2

0.1

C364

0.1

C307

0.1

C311

0.47

0.1

C362

0.1

R362

C306

0.1

RR+

RR-

STBY

1k

47k

CN901

QNZ0611-001

2.2K

R912

2.2K

OFFSET

2.2

C301

0.22/50

R311

R301 1k

47K

IC301

!

LA47201

Q301 2SC3928A/QR/-X

D301

UDZW3.3B-X

QMFZ047-150-T

R304

4.7k

!

Q331 KTD1304-X

Q321 KTD1304-X

Q351 KTD1304-X

Q341 KTD1304-X

10K

CH.L

CH.R

47K

R163

0.01

R191

C192

0.1

C906

22/16

C903

R918

Parts are safety assurance parts. When replacing those parts make sure to use the specified one.

2-6

CD servo control section (for KD-AR370,KD-G320,KD-G424,KD-G425)

2

4

K

01

FOCUS+

TRK+

FOCUS-

TRK-

SP-

FEED-

SP+

FEED+

CN501

FEEDFEED+

PSW

SPINDLESPINDLE+

SW1

SW2

TRACKING-

TRACKING+ FOCUS+

FOCUSLD

GND MD

VR VF1

VREF

VT1 GND

VT2

VCC

VF2

GND

FEED-

VF2 FEED+ RFVDD

GND VT2

SW1

VT1 SW2

VF1

PSW

VR

SPINDLELD

SPINDLE+ FOCUS-

VREF

FOCUS+ MD

TRACKING+ TRACKING-

QGB2027M4-22S

R565

FEED-

FEED+

150

SP+

FOCUS-

FOCUS+

TRK+

TRK-

SP-

VREF

VF2

VT2

VT1

VF1

LD

VT2

VT1

VF1

VF2

MD

LD

VREF

CN503

QGZ2512M1-08

R543

R544

Q521

R554

2SA1530A/QR/-X

47K

R556

QGZ2512M1-10

CN502

SW1

SW2

PSW

VREF

R5

30

3300p

39k

4.7k

C527

C5 560

R541

R542

C529

180p

0.0082

1k

47/6.3

4.7

C537

C533

47/6.3

C530

0.0082

R545

R548

C528

3.3K

C520

C535

0.0033

2-7

528

0p

39k

R541

3.3K

0.0033

QGZ2512M1-10

CN502

R540

30K

C524

560P

C531

0.33

C532

0.33

0.1

C535

C525

0.022

C526

0.022

C536

MSW

47/6.3

TRVP

TRPLMFOP

C523

NPWDOWN

C539

0.1

C540

ARF

SPOUT

R537

680p

C541

0.015 C542

C543

1000p

C544

0.082

C546

100p

1.5M

0.1

R558

!

220/6.3

82k

D501

1A3G-T1

0.1

C552

C551

FOP

MN6627945EE

R559

820

47/6.3

IC521

TRP

OUTR

C547

QTE0J57-476Z

OUTL

C583

820p

15k 27K

QTE1E57-475Z

0.1

C534

OUTL

TRVP

SPOUT

0.1

C545

0.1

OUTR

C549

QTE1E57-475Z

15k

C584

IC581

NJM4565E-X

C585

47/6.3

C538

C548

QTE0J57-476Z

C586

820p

R585 C587

5.6K

R587

R535

10K

R588 R590R584

R586

5.6K

150p

27K

C588 150p

CD_R

0

10k

22k

R594

R592

C590

QTE0J57-476Z

C591

QTE1C57-107Z

0.1

22k

10k

R593

R591

C592

R589R583

0

0.1

C983

C984

100/6.3

NJU7772F15-X

SW1

SW2

PSW

NPWDOWN

R533

27k

R534

68k

4.7k

0.22

R523

C522

R525

1K

R526

1K

R527

2.2k

R528

2.2k

R529

R530

4.7k

R531

4.7k

R532

4.7k

IC981

MSWLMNRST

X521 QAX0714-001Z

R521

1M R522

220 R524

2.2K

CD_L

C982

C981

100/6.3

0.1

IRQ

STAT

MCLK

MDATA

MLD

PSW

1k

R562

SN74LVC2G07V-X

IC523

NRST

MLD

MDATA

MCLK

R561

STAT

IRQ

Parts are safety assurance parts. When replacing those parts make sure to use the specified one.

2-8