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	2-1
Standard schematic diagrams	2-5
Printed circuit boards	2-29 to 31

COPYRIGHT 2006 Victor Company of Japan, Limited.

No.MA245SCH

2006/1

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

PICK UP	VF1,VF2,VT1,VT2,LD,MD,VREF
FOCUS &	TRACKING+,TRACKING-
TRACKING	FOCUS+,FOCUS-
COIL

FEED+

LOAD&FEED FEED-

MOTOR

POSITION SET PSW

SWITCH

SPINDLE+

SPINDLE SPINDLE-

MOTOR

SW1, SW2

SW1, SW2

LCD & Key control section

D630

ACC5V

POWER LED

D652,D653

KEY0

DIMMER

KEY1

S601 to S618

KEY2

D631 to D648

Q670,Q671

D650,D651

KEY MATRIX

LIGHTING

DIMMER

LCD.CL

DISPLAY

CONT.

ILL10V

DIMMEROUT

LCD.DA

CJ601

IC661

LCD.CE

LCD DRIVER

COM1 to COM3

ENC1

S1 to S52

REMOCON

ENC2

LCD1

IC681

JS686

LCD DISPLAY

REMOCON

ENCODER

Function section							CD mechanism control secti
	IC501		CN502		CN502
	DRIVER
	BTL

CN503

CN503

SPINDLE+,SPINDLE-

FEED+,.FEED-

TRACKING+

TRACKING-

FOCUS+,FOCUS-

CN501

VF1			FOP
VF2
			TRP
VT1
			TRVP
VT2						MLD
			VREF
MD						MDAT
			SPOUT
LD						MCLK
VREF						NRST
PSW		IC521				NPWD
		RF AMP
					STAT		S
					IRQ	IC523	I
			OUTL
			OUTR
		IC581
		CD L.P.F.

		KEY0 to 2
		LCD.CL
		LCD.DA
		LCD.CE
		REMOCON
	CN701	ENC1,ENC2
		DIMMEROUT

1.5V		IC981	VDD5V
		1.5V REGULATOR

2-1

Main amplifier section

ANT

TU_L

TU1

J1

TU_R

FM/AM

TUNER

trol section

MUTE

Only for KD-AR370 and KD-G320

LM

SUBMUTE

Q781, Q782,Q783

LINEOUTMUTE

Q321, Q331

LF

MSW

MUTING

FLO

RF

LINE OUT

FRO

MUTING

RLO

RR

J321

Q341, Q351

LR

RRO

LINE OUT

MUTING

SM

SQ

EO

MUTE

IC301

SW1

IFC

Q301

SW2

IFC.CONT

OUTLF,OUTRF

POWER

FM.OSC

OUTLR,OUTRR

PSW

AMP.

S.METER

		SDA
		SCL	IC161
			E.VOLUME
				STANDBY
				EACH BLOCK
MLD	IC701			SW5V,ACC5V
		IC775		VDD5V.CD5V
MDATA	RESET
				9V,ILL10V		LF+,LF-
MCLK	CPU	RESET
						RF+,RF-
NRST
						LR+,LR-
NPWDOWN
						RR+,RR-
			STBY
						CN901
			OFFSET	IC901	ACC
STAT				REGULATOR
IC523 IRQ				ANT
				D906,D907
				PWR.ANTENA

	CD.L	Only for KD-G424 and KD-G425
	CD.R
		TEL_MUTE		Q891	TEL.MUTE
			TEL.MUTE
		Only for KD-AR370
	JBUS.SI					CH_L
	JBUS.SO
						CH_R
	JBUS.IO						J801
	JBUS.SCK
				IC801
	JBUS.INT				SCK
V	JBUS.SI			JVC BUS

LINE OUT FRONT

LINE OUT REAR

SPK BATTERY

CHANGER CONTROL

2-2

Block diagram (For KD-G421 and KD-G427)

PICK UP	VF1,VF2,VT1,VT2,LD,MD,VREF
FOCUS &	TRACKING+,TRACKING-
TRACKING	FOCUS+,FOCUS-
COIL

FEED+

LOAD&FEED FEED-

MOTOR

POSITION SET PSW

SWITCH

SPINDLE+

SPINDLE SPINDLE-

MOTOR

SW1, SW2

SW1, SW2

LCD & Key control section

D630

ACC5V

POWER LED

D652,D653

KEY0

DIMMER

KEY1

S601 to S618

KEY2

D631 to D648

Q670,Q671

D650,D651

KEY MATRIX

LIGHTING

DIMMER

LCDCL

DISPLAY

CONT.

ILL10V

DIMOUT

LCDDA

CJ601

IC661

LCDCE

LCD DRIVER

COM1 to COM3

ENC1

S1 to S52

REMOCON

ENC2

LCD1

IC681

JS686

LCD DISPLAY

REMOCON

ENCODER

Function section							CD mechanism control secti
	IC501		CN502		CN502
	DRIVER
	BTL

CN503

CN503

SPINDLE+,SPINDLE-

FEED+,.FEED-

TRACKING+

TRACKING-

FOCUS+,FOCUS-

CN501

VF1			FOP
VF2
			TRP
VT1
			TRVP
VT2						MLD
			VREF
MD						MDAT
			SPOUT
LD						MCLK
VREF						NRST
PSW		IC521				NPWD
		RF AMP
					STAT		S
					IRQ	IC523	I
			OUTL
			OUTR
		IC581
		CD L.P.F.

		KEY0 to 2
		LCDCLK
		LCDDA
		LCDCE
		REMOCON
	CN701	ENC1,ENC2
		DIMOUT

1.5V		IC981	VDD5V
		1.5V REGULATOR

2-3

Main amplifier section

ANT

J1

ol section

LM

MSW

SW1

SW2

PSW

MLD

MDATA

MCLK

NRST

NPWDOWN

STAT

IC523 IRQ

TU_L

TU1 TU_R

FM/AM

TUNER

MUTE	Q781, Q782
	MUTE
	DRIVER
	MUTE						Q341, Q351
					RLO,RRO		LINE OUT	RLO,RRO	J321	LINE OUT
							MUTING			REAR
FSU
AFS
					MUTE		IC301
Q_OUT		Q301
SSTOP					FL_OUT,FR_OUT		POWER
TUSDA					RL_OUT,RR_OUT
							AMP.
TUSCL

		VSCL
		VSDA	IC171
		E.VOLUME
				STANDBY
		MPXW
	RDSDA	IC71
IC701	RDSCL	RDS
CPU		DETECTOR
	ERCLK
	ERDI	IC771	EACH BLOCK
		EPROM
				SW5V,ACC5V
				VDD5V.CD5V
	RESET	IC775		9V,ILL10V		LF+,LF-
		RESET				RF+,RF-
						LR+,LR-
			POWER			RR+,RR-	CN901	SPK
			CDON	IC901	ACC
		CD_L	REGULATOR					BATTERY
		CD_R
		TEL_MUTE		Q891	TEL_MUTE
				TEL.MUTE		CH_L
						CH_R
							J801	CHANGER
			SI,SO,I/O,SCK,INT	IC801	SI/SO			CONTROL
				JVC BUS
	STEERING						CN761	STEERING
								REMOTE

Only for KD-G421

2-4

Standard schematic diagrams

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

J1

QNB0190-001

		R33
		1.5k
C33		R34	R35
2.2/50		1k	10k
			220/10
C32	0.001
Q31			C31
2SC3928A/QR/-X
		Q32
2SC3928A/QR/-X

CD8V

CD_R 9V

CD_L

SW1

SW2

PSW

NPWDOWN

MSW

LM

NRST

IRQ

STAT

MLD

MDATA

MCLK

CN701

QGZ1601J1-15

C711 0.1

DETACH

ACC5V

REMOCON

ENC1

ENC2

DIMMEROUT

LCD.SCK

LCD.SO

LCD.CE

KEY0

KEY1

KEY2

UDZW6.2B-X	UDZW6.2B-X	0.1	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X	UDZW6.2B-X
D711	D712	C713	D713	D714	D721	D715	D716	D717	D718	D719	D720

C98 0.1

TU1

QAU0312-002

L1

4.7u

R91

3.3K

R31

1k

R81

3.3K

R32

1k

100

-X

-X

R1

R3

1SS355W

1SS355W

C1 220p

C2 47/16

C3 0.1/50

C4 0.022

220/10

C6 0.01

0.1/50

0.027

C91 0.027

120p

0.1

10k

C82 0.0068

C92 0.0068

10

C12

C17

D1

D2

C16

C9

C7

C81

C8

C15

R2

C97

0.1

C98

0.01

Q5

2SA1365/F/-X

C99

82pF

C13

Q6

R11

2SA1530A/QR/-X

10k

R37

0

R13

X-1SS355W

R12

1k

R10

10

R5

8.2k

C110.01

RT1N141C-X

R4

10k

D782

UDZW10B-X

R36

470

D3 1SS355W-X

R14

2.2k

D4

10k

R6

022k

Q2

X

C782

47/16

R16

D6

MA111-X

Q782

RT1P141C-X

Q4

1SS

RT1N141C-X

E0

FM/AM

FM.OSC

S.METER

IFC

SD/ST

MONO

SEEK/STOP

Q1

-

IFC.CONT

D783 1SS355W-X

LINEOUTMUTE

RT1N141C

RT

X-1SS355W

X-1SS355W

X-1SS355W

X-1SS355W

47k

R752 10k

R754 10k

DETACH

R74347K

MSW R742 5.1k

NPWDOWN

IRQ

R710

47k

LCD.CE

LCD.SCK

LCD.SO

MLD

MCLK

MDATA

STAT

JBUS.IO

JBUS.SCK

JBUS.SO

JBUS.SI

0.1C715

R721

47k

R71110k

R701

R709

R708

4.7kR726

4.7kR725

R724

R723

R715

3.3k

3.3k

3.3k

4.7k

4.7k

D701

D702

D703

D704

TEL-M

10k

10k

LM

R751

R753

C702

0.01

IC701

NRST

LC723784-9D19

DIMMEROUT

R719

0

SCL

R712

4.7K

SDA

R713

4.7K

VOLMUTE

R760

2.2K

SUBMUTE

R762

2.2K

STBY

R763

1K

R749

47k

OFFSET

R764

100

R716

47k

10K

10K

47k

4.7k

4.7K

R732

1K

R733

47k

R717

47k

R705

R706

R730

10K

R703

47k

R722

R727

R728

R718

10k

R731

10K

R704

47k

R729

47k

SW1

SW2

PSW

ENC1

ENC2

REMOCON

JBUS.INT

R756

47k

R755

47k

IFC.CONT

SD/ST

FM/AM

MONO

SEEK/STOP

MUTE

S.METER

2-5

TU1

QAU0312-002

R91

3.3K

R81

3.3K

C920.0068

R2

C820.0068

R82

R92

C83

1/50

C93

1/50

10k

3.9K

3.9K

C97

0.1

C98

0.01

C99

82pF

R4

10k

D782

UDZW10B-X

C782

47/16

C781 220/6.3

Q782

Q781

RT1P141C-X

D784

RT1P141C-X

1SS355W-X

-X

Q783

MONO

SEEK/STOP

Q1

RT1N141C

IFC.CONT

D783 1SS355W-X

LINEOUTMUTE

MUTE

D781

1SS355W-X

SUBMUTE

RT1P141C-X

STAT

JBUS.IO

JBUS.SCK

JBUS.SO

JBUS.SI

R721

47k

4.7k

4.7k

4.7k

4.7k

0.1

R726

R725

R724

R723

C715

C703

22p

X701

QAX0406-001Z

C704

27p

EO

D706

FM.OSC

1SS355W-X

R741

47k

R748

IFC

C705

47k

10/16

R740 10k

C716

R739 10k

KEY0

0.1

R736 10k

KEY1

KEY2

R745

4.7k

4.7k

4.7k

47K

47k

R735

R737

R738

R707

C701

220/6.3

R749

47k

L701

4.7u

4.7K

R733

47k

TEL-M

R732

1K

VDD

R728

R730

10K

R731

10K

R729

47k

JBUS.INT

R756

47k

220/10

R755

47k

FM/AM

MONO

SEEK/STOP

MUTE

S.METER

C911

R331

FLO

D331

820

R335

1SS355W-X

2.2K

D321

R325

1SS355W-X

2.2K

R321

FRO

820

R351

RLO

820

D351

R355

1SS355W-X

2.2K

D341

R345

LINEOUTMUTE

1SS355W-X

2.2K

R341

RRO

C783

0.082

820

MEMORY.IN

SCK

C801

0.047

R809

10K

R801

22k

R802

100k

R803

J801

100

QNZ0095-001

CH.L

CH.R

JBUS.SI

R804

47k

JBUS.SO

JBUS.IO

IC801

SN74AHC126NS-X

RRO

SDA

SCL

VOLMUTE

FLO

FRO

RLO

CH.L CH.R

R164

47k

R174

47k

R162

47K

CD R

CD L

R172

47K

C166

4.7/25

C176

4.7/25 C165

4.7/25

2.2/50

2.2/50

C175

4.7/25

C183

C184

R163

C163

C164

0.47

0.47

C181

C182

1/50

1/50

C194

10/16

0.01

IC161

C192

TDA7419-X

R892

47k

D891 1SS355W-X

R891

1k

D892 1SS355W-X

R895

47k

0.1

C895

Q895

RT1N141C-X

Q891

C891

RT1N141C-X

0.1

D903

1SS355W-X

C915

Q902

10/16

2SC3928A/QR/-X

R907 12K

R910

47k

R909

27K

R908

20k

R906

R905

C9100.01

C909100/10

C908100/10

C907

R9034.7k

R9019.1k

C904

C90522/16

C919 D907 CRS03-X

C906 0.1

2SA1530A/QR/-X

C903 22/16

1K

1K

0.01

22/16

10/16

Q903

D906

CRS03-W

R332
100
Q331	C331
	100P
KTD1304-X
Q321	C321
KTD1304-X	100P
R322
100
R352
100
Q351	C351
	100P	J321
KTD1304-X
Q341	C341
KTD1304-X	100P
R342
100

R811

4.7

R810

100k

R807 100

C802

100p

R173

47K
R191	0	C191 100/10

R918

10K

C913

R805 R808 22k

47K

0.22

		JBUS.SCK	JBUS.INT
47k	R806	100k
	C168		R166
	0.47
			0
			C312	100P
	C169		C313	100P
			R167
	0.47
			0
	C179		R177
	0.47
			0
			C314	100P
	C178		C315	100P
			R176
	0.47
			0

C902

0.01

C901

2700/16

D901 !

1N5401-F64

IC901

AN80T71 !

C916

2.2/50

IC301

!

LA47201

LR+ LRLF+	LF-	OFFSET	R311	47K
R364	2.2	C308
		0.1
	C364
C304	0.1
0.022

C307

0.1

C363 R363

0.12.2

C311

0.47

			C310
			10/16
C319
0.022		0.1			C362 0.1
		C316
C309			C361		0.1	R362	2.2
100/16
C323
0.01			R361	2.2
R315
7.5K					C306
C303	RF+	0.1	RF-		0.1	RR-
0.022					RR+
		C305
		C302			STBY		R301
	4.7/25						1k	Q301
		R303			1k			2SC3928A/QR/-X
									R304
		R302			47k		C301	D301	4.7k
							0.22/50	UDZW3.3B-X
							CN901
	RF+				QNZ0611-001
-W
	RR+
D904 CRS03	LF+
	LR+
C914		0.1	R911		2.2K R912	2.2K
D905 CRS03-W	RF-
	RR-
	LR-
	LF-
L901
QQR0703-001
								QMFZ047-150-T	!
R902 1k

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)

	FEED-	GND
	FEED+
		FEED-
		VF2
		FEED+
		RFVDD
		GND
	PSW	VT2
	SPINDLE-	SW1
	SPINDLE+	VT1
		SW2
		VF1
		PSW
		VR
	SW1	SPINDLE-
		LD
	SW2
		SPINDLE+
		FOCUS-
	TRACKING-	VREF
		FOCUS+
	TRACKING+
		MD
	FOCUS+
		TRACKING+
	FOCUS-
		TRACKING-
	LD
	GND
	MD
	VR
	VF1
	VREF
	VT1
	GND
	VT2
	VCC
	VF2

CN501

QGB2027M4-22S

R565

150

FOCUS+

TRK+

FOCUS-

TRK-

SP-

FEED-

SP+

FEED+

	FEED-
	FEED+	VF2
		VT2
		VT1
		VF1
	SP-
	SP+	LD
	FOCUS-		VT2
	FOCUS+	VREF	VT1
			VF1
	TRK+	MD	VF2
			MD
	TRK-
			LD
			VREF

CN503

QGZ2512M1-08

Q521 2SA1530A/QR/-X

R556 47K

SW1

SW2

PSW

R543 1k

R544 1k

R554 4.7	47/6.3
	C537

47/6.3

C533

VREF
C527 3300p	R542 4.7k	R541 39k
C529		180p
0.0082
		C528
C530
0.0082
R545		3.3K
R548		3.3K

C520

0.0033

CN502 QGZ2512M1-10

R54

30K

C52

560

C535	0 1

2-7

	D501
	1A3G-T1
			C586
		QTE1E57-475Z
	R584			R588 27K		R590		CD_R
CN502 QGZ2512M1-10	15k			R586	C588		0
		C584	820p	5.6K	150p
	IC581					R59322k	10kR591R594	0.1C592 QTE0J57-476Z C591	QTE1C57-107Z
		X-NJM4565E
						22k	10k
						R592		C590

C583 820p		R585	C587
R583		5.6K	150p
15k	C585	R587 27K

QTE1E57-475Z

	0.1	C552	47/6.3	C534 0.1
	C551

R589

0

C984		0.1		C983	100/6.3

CD_L

C982

0.1

C981

100/6.3

IC981

NJU7772F15-X

MSW

TRVP

LM

TRP FOP SPOUT

FOP

TRP

OUTR

OUTL

SPOUT

SW1

SW2 PSW NPWDOWN MSW LM NRST

IRQ STAT MLD MDATA MCLK

NPWDOWN

C523

100p

TRVP

R537 1.5M

R535

R540

10K

30K

39k

560P

R541

C524

C525

0.022

C526

80p

0.022

528

R533 27k

PSW

R534

68k

X521

IC521

QAX0714-001Z

!

MN6627945EE

R521

1M

3.3K

C522 0.22

R523

4.7k

R522

220

3.3K

R524

NRST

R525

1K

2.2K

C531

0.33

R526

1K

R527 2.2k

MLD

R528 2.2k

MDATA

C532

R529 2.2k

MCLK

0.33

R530 4.7k

R531 4.7k

0.0033

C535

C536

47/6.3

R532 4.7k

0.1

C539

0.1

C540 680p

C541

0.015

476Z-

ARF

C542

47/6.3

C543

0.1

R559 820

C547

QTE0J57

C5450.1

C538

1000p

C544

0.082

C546

220/6.3

R558

82k

OUTL

OUTR

C549 0.1

QTE0J57-476Z

C548

R561 1k

R562 1k

STAT

IRQ

IC523

SN74LVC2G07V-X

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

2-8