JVC KW-XC939 Schematics

SCHEMATIC DIAGRAMS

CD/CASSETTE RECEIVER

KW-XC939

CD-ROM No.SML200310

Area suffix

EE --------- Russian Federation

Contents

Block diagram Standard schematic diagrams Printed circuit boards

2-1 2-2 2-6 to 9

No.MA041SCH

2003/10

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.

Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.

Block diagram

CD

PICK UP

&

MECHANISM

HEAD

SUB MOTOR

MAIN MOTOR

&

SWITCH

FOCUS+ FOCUSTRACKING+ TRACKINGSPINDLE+ SPINDLELOAD/FEED+ LOAD/FEEDREST,SW1,SW2 A,B,E,F,MD,LD

FWD-L FWD-R REW-L REW-R COMMON-L COMMON-R

TAPEIN MOTOR SUBMO+ SUBMOSTANDBY MODE REEL PHOTO

CD mecha control board

VA,VB,VE,VF MD,LD

IC601

CD RF

CN601

IC621

D.SERVO & DSP

FOCUS+ FOCUSTRACKING+ TRACKINGSPINDLE+ SPINDLELOAD/FEED+ LOAD/FEED-

IC681

REST SW1,SW2

CD DRIVER

Mecha control board

CN402

CN403

IC401 HEAD

AMP

STANDBY,MODE,REEL

IC402 MOTOR DRIVER

FE,TE RF,RFDC RFGC,RFRP TEB,SEL

DATA LRCK BCK

VREF FMO TRO FOO DMO

HEADSEL FF/REW

SUBMO+ SUBMO-

LRCK BCK SDO

IO0 to DA7 AD0 to AD16 WE,OE,CE

DATA LRCK BCK SDO

BUS0 BUS1 BUS2 BUS3 BUCK CCE DSPRST

CDON,LOAD,LD/FE

TAPE-LCH,TAPE-RCH

IC431

TA PE

MICON

IC653 SRAM

IC652

MP3 DEC

MP3RST MP3DA MP3CK

SCK SI/SO A.MUTE PREQ SI/SO,SCK RESET,P.DET

BUS SCK BUS SO BUS SI

IC501

CD

MICON

IC571 24 Bit

DAC

DACML DACMC DACMD DACCS DSPRST

BUSSI BUSSO BUSSCK /BUSIO BUSIO

EPROMDI EPROMDO EPROMCK

IC461

J-BUS

BUFF

VOUT L VOUT R

3.3V

2.5V

IC603

J-BUS

BUFF

IC602

EPROM

CN401

IC572

CD LPF

CD.LCH

CD.RCH

IC504

REG

IC651

REG

BUSSI/SO BUSCLK

B.DET,P.DET CDMUTE CDREQ CDRESET

CN971 To CD CHANGER

CN972

Changer control board

CH-LCH CH-RCH

J1 ANT

CN501

CN973

Main board

CN601

IC791

RESET

CN702

BUSCLK BUSSI/SO B.DET P. D E T CDMUTE CDREQ CDRESET

SI,SO I/O BUS_SCK

SCK SI/SO TAPE-DET TAPE-MUTE TAPE-REQ TAPE-RESET

TU1

FM/AM

TUNER PACK

S.METER SD/ST

SYSTEM

CONTROL

IC761

J-BUS

BUFF

SCK SI/SO

IC701

MAIN

CPU

SEEK FM/AM MONO FM/AM OSC

IC21

PLL

PLLCE PLLDA PLLCL PLLDI

AUXL AUXR

LRST LCD-SCK LCD-DATA LCD-CE KEY0 to KEY3 RESET REMOTE

TU-Lch TU-Rch

CD-LCH CD-RCH

E.VOL SLK E.VOL SO

CN701

IC951

E.VOL

TAPE-LCH TAPE-RCH CH-LCH CH-RCH AUX-LCH AUX-RCH

LCD board

CN501

S521

DISP SW

AUX-LCH,AUX-RCH

LCD1

LCD MODULE

SEG1 to SEG75 COM1 to COM8

IC501

LCD DRIVER

LCD RST CE,CL,DI

KEY2

S501 to S505 S511 to S513 S531 to S535 KEY MATRIX

FRONT-L FRONT-R REAR-L REAR-R

IC911

REGULATOR

EACH BLOCK

KEY0 KEY1 KEY3

FRONT-L FRONT-R

REAR-L REAR-R

PJ501 AUX IN

WR502WR501

IC901

POWER

AMP

CN911

SPK

BATTERY

FRONT L+/FRONT R+/REAR L+/REAR R+/-

Switch board

KEY2 KEY3

WR502WR501

REMOTE

RESET

CN951

FRONT LINE OUT

REAR LINE OUT

S522 to S528

S536,S537

KEY MATRIX

IC502 REMOCON RECEIVER

S520

RESET SW

2-1

Standard schematic diagrams

Receiver & System control section

TU1 QAU0258-001

J1

QNB0100-002

TAPE-Lch

TAPE-Rch

VDD5V

CH-Lch

GNDM

CH-Rch

CD-Lch

CD-Rch

9V

CD8V

REQ

MOUT

ROUT

SCK

SI/SO

CMU

CDREQ

CRS

14V

PS2

MEMORY

CN701 QGB1004K1-20

J1

0

7P10P

B24

0.001

C24

2.2k

R28

PLLCE

2.2k

R27

PLLDA

2.2k

R26

PLLCL

2.2k

R25

PLLDI

SEEK

ANT

MONO

FM/AM

4.7k

10k

R33

R32

R24

R182

D182

D181

1k

R282

1k

L999

47

D921

UDZS6.2B-X

X21

C35C34

QAX0616-001Z

IC21 TB2118F-X

47P

R23

C39

6.8K

0.047

0.01

C22

C20

C23

AUXL

AUXG

AUXR

KEY0

KEY1

KEY2

KEY3

ON5V

LRST

LCD-CE

LCD-SCK

LCD-DATA

ACC5V

L1

4.7u

1SS355-X

0.01

D2

D1

100

R31

C36

0.001

10P

C33

0.01

C32

10/16

C30

C31

0.047

C26

0.01

C25

0.01

22

C21

R21

220/10

0

R22

22/16

IFC

AJ

ILL

L782

SI/SO

SCK

C782

1.8u

C781

L781

R782

1.8u

100

47k

R783

C1

C37

0.001

Q2

2SB815/7/-X

10k

39k

R30

R4

10k

R29

0.0027

C28

0.01

C29

0.047

C929

R781

22k

C27

C38

0.047

Q918

UN2111-X

0.01

D3

R5

2.2k

10

R8

R925

27K

B-LED-CONT

Q919 UN2211-X

47k

100k

22k

R776

R775

R774

100

R777

R779

330

10k

R780

C771

220/10

C9

MA152WK-X

R784

22k

IC761

0.022

Q3

2SB815/7/-X

L21

47u

SI

SO

I/O

100k

R778

HD74HC126FP-X

C11

R7

0.01

C4

1k

Q4

UN2211-X

100

R1

FM/AM

R6

10k

CMU

R753

R754

C710

CRS

R764

R766

R765

R767

R768

R769

MOUT

ROUT

0.018

C111

0.018

C211

R752

0.01

R759

R771

R772

R773

BUS_SCK

C281

4.7/25

C181

4.7/25

2.2k

1k

47k

1k

10k

10K

4.7k

1/50

2.7K

22/6.3

2.7K

1/50

4.7k

C82

0.047

R85

390

R86

1k

IC702

C707

NAD0028-103X

3.3k

R722

R723

12K

R142

LCD-CE

LCD-SCK

LCD-DATA

BUS_SCK

B-LED-CONT

S_METER

KEY3

KEY2

KEY1

3.3k

R724

C291

1/50

C242

1/50

C142

C191

1/50

12K

CRS03-W

D84

R242

D83

1SS355-X

D82

1SS355-X

C83

22/16

C708

0.01

I/O

SO

SI

10/16

100/10

C952

C956

C953

270k

0.22/50

R87

C84

C709

0.01

ACC5V

L701

47u

AJ

L702

100u

CD8V

ILL

220/10

C714

C920

47/6.3

C715

0.01

C930

ON5V

TEL

Q920

UN2211-X

IC951

M61508FP-X

2.2/50

C246

C247

2.2/50

C146

C147

47k

R929

0.1

C926

R928

10k

CRS03-W

10k

0.1

D933

R931

C931

D914

R971

Q914 2SB709A/QR/-X

C248

C249

1/50

C951

C148

2.2/50

C149

2.2/50

CRS03-W

D932

UDZ11B-X

D901

1SS355-X

0

2.2/50

47k

R208

47k

1/50

10/10

R109

R108

C954

C955

Q903

UN2111-X

100/16

C904

C944

0.1

10/16

220/10

C925

C919

C922

C918

5.6k

18k

R921

R922

C201

R221

20k

1/50

C202

R222

20k

1/50

47k

R209

C101

R121

20k

1/50

C102

R122

20k

1/50

1k

R904

D902

1SS355-X

Q901

C990

0.1

C927

UN2211-X

0.01

HA13164A

IC911

R926

15k

47k

0.01

3.3k

4.7k

22/16

R927

C928

C915

C916

C917

R923

R918

47k

Q911

UN2211-X

R915

R917

4.7k

C921

22/16

330P

C203

27k

4.7/25

R902

R903

C905

D913

CRS03-W

D912

CRS03-W

R913R914

1k9.1k

2.2/50

C914

100k

0.1

C923

R916

330P

C204

2SD1048/6-7/-X Q101

0.1

C913

IC901

LA4743K

330P

C902

C901

3.3K

100

1k

R131

R231

R261

QNN0175-001

2SD1048/6-7/-X Q102

100

CN951

0.01 47/16

C906

22/16

D201

MA152WA-X

1k

R134

R234

3.3K

R232

R132

Q202

2SD1048

100

R162

QMFZ047-150-T

C911

2200/16

D911

1N5404-TU-15

100

R262

L911

QQR0703-001

C991

C992

C993

C994

C995

C996

C997

C998

C981

C982

C983

C984

100P

0.1

CN911

QNZ0002-001

C104

C103

D101

MA152WA-X

R233

R133

3.3k

Q201 2SD1048

2.2k

2.2k R161

R912

R911

C232

0.047

C131

0.047

Parts are safety assurance parts.

CN706

When replacing those parts make sure to use the specified one.

0.01

1SS355-X

47k

C792

D791

R791

C793

CH-Rch

R291

TAPE-Rch

C272

CD-Rch

R241

TU-Rch

AUXR

100k100k

UN2211-X

10k

R9

R2

S_METER

SEEK

C212

4.7/25 C112

4.7/25

1k

47k

1k

47k

Q1

22k

0.01

330P

C8

R3

R10

220

C13

Q5

UN2211-X

R211

4.7k

R111

4.7k

1SS355-X

1k

10K

47K

R786

C6

C5

SD/ST

470

47P

12k

R215

R115

D91

D92

47k

0.1/50

MONO

R11

IFC

C12

100P

C214

4.7/25

C114

4.7/25

680P

C213

C113

TU-Lch

TU-Rch

Q91

UN2111-X

D90

1SS355-X

C91

47/6.3

TEL

LRST

VOLSCK

1k

1k1k2.2k

R744

R741

R742

R743

IC701

UPD784215AGC173

1K

1k

R704

0.01 820

R705

220/10

C702

C701

8P

27P

C704

C703

QAX0401-001QAX0617-001Z

1k1k1k

R710

R709

R708

R711

R707

10M

47k

R706

27P

22P

C705

C706

X702X701

Q701 UN2213-X

D81

R147

MA152WK-X

120k

R247 120k

PLLCE

PLLDA

PLLCL

PLLDI

SD/ST

R739

1k

R740

10k

R714

R718

R717

R713

R712

R716

R715

REQ

CDREQ

KEY0

R281R181

AUXG

C182

AUXL

TU-Lch

CD-Lch

R141

TAPE-Lch

C172

CH-Lch

R191

R84

12k

R82

180k

C81

1/50

47k

R83

22k

Q81

R81

2SD601A/RS/-X

47k

R736

R735

R734

R733

R732

R731

R730

R729

R728

R727

R726

R746

TH745

R725

R721

R720

R719

R745

3.3k

47k

47/6.3

2.2k

C791

R792

IC791

IC-PST9333U-X

2-2