JVC Kd-g285u Bedienungsanleitung

SERVICE MANUAL

2006/2

CD RECEIVER

MA24620062

KD-G285U,KD-G285UN,

KD-G285UT,KD-G285UH

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

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

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1-2 (No.MA246)

SPECIFICATION

Design and specifications are subject to change without notice.

AUDIO AMPLIFIER SECTION

Maximum Power Output Front 50 W per channel

Rear 50 W per channel

Continuous Power Output (RMS) Front 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more

than 0.8% total harmonic distortion.

Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more

than 0.8% total harmonic distortion.

Load Impedance 4 Ω(4 Ωto 8 Ωallowance)

Tone Control Range Bass ±10 dB at 100 Hz

Treble ±10 dB at 10 kHz

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out Level/Impedance 2.0 V/20 kΩload (full scale)

Output Impedance 1 kΩ

Other Terminals CD changer

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM 531 kHz to 1 602 kHz

FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

AM Tuner Sensitivity 20 µV

Selectivity 35 dB

CD PLAYER SECTION

Type Compact disc player

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response 5 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C

Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×52 mm ×150 mm

Panel Size (approx.) 188 mm ×58 mm ×11 mm

Mass (approx.) 1.4 kg (excluding accessories)

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(No.MA246)1-3

SECTION 1

PRECAUTION

Please refer to "KD-G425 (No.MA245)" about this section.

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

Please refer to "KD-G425 (No.MA245)" about this section.

SECTION 3

DISASSEMBLY

For disassembly and adjustment are follow the service manual No.MA245.

For the CD mechanism, please refer the mechanism manual TN2007-1001 (No.MY003).

SECTION 4

ADJUSTMENT

Please refer to "KD-G425 (No.MA245)" about this section.

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1-4 (No.MA246)

SECTION 5

TROUBLESHOOTING

5.1 16 PIN CORD DIAGRAM

BL/WH

WH/BK

GN/BK

VI/BK

GY/BK

GND

16 YL

8 BK

7 RD

3 GN

11 GN/BK

2 VI

10 VI/BK

4 WH

12 WH/BK

1 GY

9 GY/BK

5 BL/WH

6 BL

Black

Red

BL Blue

WH White

GN Green

VI Violet

GY Gray

Yellow

REMOTE

ANT

ACC

GND

MEMORY

Rear Right

Front Right

Front Left

Rear Left

Remote

ACC Line

Ground

Memory Backup Battery+

Auto Antenna

MEMORY

GND

ACC

RL+

RL-

RR+

RR-

FL+

FL-

FR+

FR-

REMOTE

ANT

REMOTE

OUTPUT

ONLY

POWER

ANTENNA

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(No.MA246)1-5

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(No.MA246)

Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken, 371-8543,Japan

Victor Company of Japan, Limited

VPT

Printed in Japan

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Contents

Block diagram

Standard schematic diagrams

Printed circuit boards

2-1

2-2

2-5,6

CD-ROM No.SML200602

SCHEMATIC DIAGRAMS

CD RECEIVER

No.MA246SCH

2006/2

KD-G285U,KD-G285UN

KD-G285UT,KD-G285UH

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

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!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.

Safety precaution

!Please use enough caution not to see the beam directly or touch it in case of an

adjustment or operation check.

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2-1

Block diagram

SPINDLE

MOTOR

POSITION SET

SWITCH

LOAD&FEED

MOTOR

SW1, SW2

PICK UP

PSW

SW1, SW2

IC561

BTL

DRIVER

IC501

RF AMP

IC521

DSP&DAC

IC581

CD L.P.F.

VF1,VF2

VT1,VT2

MD,LD

FBAL

TBAL

RFENV

VDET

OFTR

RFDET

BDO

LDON

ARF

TRV

TVD

ECM

ECS

FOD

KICK

TRD

TU1

FM/AM

TUNER

IC701

CPU

IC161

E.VOLUME

Q341, Q351

LINE OUT

MUTING

Q301

Q781

Q782

MUTING

IC301

POWER

AMP.

IC901

REGULATOR

EACH BLOCK

TU_L

TU_R

OUTLF,OUTRF

OUTLR,OUTRR

LRO

RRO

LRO

RRO

P.ICSTBY

P.ICOFFSET

ACC

SW5V,ACC5V

VDD.CD8V

AUDIO9V,ILL_10V

CD.LCH

CD.RCH

P.SAVE2

ANT REMOTE

LF+,LF-

RF+,RF-

LR+,LR-

RR+,RR-

SDA

SCL

MUTE

MUTE.CONT

ANT

SW1

SW2

PSW

MSW

FEED+

FEED-

SPINDLE+

SPINDLE-

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

SPINDLE+

SPINDLE-

FEED+

FEED-

TRACKING+

TRACKING-

FOCUS+

FOCUS-

SPK

BATTERY

SSM

IFC

IFC.CONT

FM.OSC

S.METER

FM/AM

SEEK/STOP

SD/ST

MONO

KEY0 to 2

LCD.SCK

LCD.SO

LCD.CE

REMOCON

ENC1,ENC2

DETACH

DIMMEROUT

OUTL

OUTR

LINE OUT

REAR

FOCUS &

TRACKING

COIL

TRACKING+,TRACKING-

FOCUS+,FOCUS-

CD mechanism control section

Main amplifier section

S601 to S618

KEY MATRIX

KEY0

KEY1

KEY2

IC661

LCD DRIVER

LCD1

LCD DISPLAY

COM1 to COM3

S1 to S52

LCD.CL

LCD.DA

LCD.CE

IC681

REMOCON

JS686

ENCODER

D630

POWER LED D652,D653

DIMMER

LCD & Key control section

D631 to D648

D650,D651

LIGHTING

DISPLAY

CJ601

CN701

Q670,Q671

DIMMER

CONT.

ENC1

ENC2

DETACH

DIMMEROUT

ILL_10V

ACC5V

CHANGER

CONTROL

IC801

JVC BUS

JBUS.SI

JBUS.SO

JBUS.IO

JBUS.SCK

JBUS.INT

JBUS.SI

SCK

CH.L

CH.R

CN501

J801

CN901

CJ1

CD.RESET

STATUS

SUBQ

SQCK

TLOCK

FLOCK

CD.SENSE

MLD

MDATA

MCLK

ILL_10V

MUTE

CJ321

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2-2

Parts are safety assurance parts.

When replacing those parts make

sure to use the specified one.

R733

C706

R715

R718

Q782

Q31

Q902

X701

C703

C704

CJ1

R739

R740

R735

IC701

C702

C319

R312

C705

CN901

R907

R732

R712

C901

C351

R707 Q301

C341

R729

R736

D701

Q351

IC901

R731

R730

C916

C302

C304

C303

C168

R303

R716

D901

C361

C903

C169

C174

C164

C163

C310

C309

R172

R162

R717

R165 R310

R175

R311

R166

R167

R177

R176

C311

Q341

R713

R720

R721

C178

D903

C701

D301

R355

R301

IC801

C902

D706

C317

C318

R341

R351

C33

CN701

R302

R345

D331

Q32

Q903

R342

C707

R91

R81

TU1

B305

R752

IC301

J801

C711 C712

R801

R803

R753

C308

C307

C306

C305

R754

R751

R352

R902

R802

R809

C801

C715

R31

R304

C320

C325C324

R308 R309

D341

C322 C323

CJ321

R313

D702

R705

R706

R701

C179

Q781

IC161

R11

C915

C32

R34 R35

R33

R32

C783

C782

D715

D905

C93

R737

R738

C905

R743

R191

C909

R906

R16

R910

C10

C82

R745

R708

D720

R905

R901

R903

C13

C312

R727

L701

D719

C910

R728

C12

C904

C908

C914

C172

C919

C175 C165

C162

C171 C161

C173

C195

C193

C196

C167

C194

R173 R163

C192

C177

R13

D906

R810

C191

C83

R14

R918

C913

C313

R10

D907

L901

R749

C81

C91

C185

R909

R709

C31

R92

R82

C14

C567

R908

C314C315

D714

D716

D713

D717

D718

D712

D782

D711

D904

R711

C907

C713

R911

R912

C92

R807

R808

R805

R806

R804

C911

C182 C181

D781

R307

R306

R305

C301

R710

R723

C917

R704

R703

R724

R726

R725

C781

R12

C11

R741

47k

220p

47k

RT1P141C-X

2SC3928A/QR/-X

QAX0759-001Z

QNB0190-001

22k

4.7k

LC723662-9D20

0.01

1SS355W-X

0.47

7.5k

10/16

QNZ0611-001

12K

4.7K

2700/16

100P

RT1N441C-X

100P

47k

22k

1SS355W-X

KTD1304-X

AN80T71

10K

2.2/50

4.7/25

0.022

0.47

47k

1N5401-F64

0.1

22/16

0.47

0.033

0.0330.22

10/16

100/16

22k

47k

2.2

47k

2.2

RT1N141C-X

22/16

KTD1304-X

4.7K

47k

0.47

2SA1530A/R/-X

1SS355W-X

220/6.3

1SS355W-X

2.2K

SN74AHC126NS-X

0.01

1SS355W-X

1/50

820

4.7u

2.2/50

QGZ1601J1-15

47K

2.2K

1SS355W-X

2SC3928A/QR/-X

2SA1530A/R/-X

100

0.1

5.6k

QAU0312-002

47k

LA47201

QNZ0095-001

0.1 0.1

100k

100

47k

0.1

QMFZ047-150-T

0.1

47k

100

100k

2SA1365/F/-X

10K

0.047

0.1

47k

0.01

RT1N141C-X

0.1

2.2 2.2

1SS355W-X

0.1 0.1

QNN0773-001

33k

1SS355W-X

10K

47k

0.47

RT1P141C-X

TEA6320T-X

10k

2.2/50

0.001

1k 10k

1.5k

0.082

UDZS10B-X

47/16

UDZW6.2B-X

CRS03-W

1/50

4.7k

22/16

47K

100/10

0.022

100K

47k

0.1

22k

4700p

47k

3.3k

UDZW6.2B-X

9.1k

4.7k

22/16

100P

4.7k

4.7u

UDZW6.2B-X

0.01

0.047

4.7K

0.01

22/16

100/10

0.1

0.22

10/16

0.0056

0.22

0.0082 0.0082

0.22

100/10

0.1

4.7/25

47/16

2.2k 2.2k

0.01

4.7/25

10k

0.01

CRS03-W

100k

100/10

1/50

2.2k

220p

10K

0.22

100P

1SS355W-X

CRS03-W

120p

47/16

QQR0703-001

0.1/50

220/10

0.1/50

47k

0.01

27K

3.3k

220/10

15k

1SS355W-X

100p

1SS355W-X

0.01

27K

100P100P

1SS355W-X

UDZW6.2B-X

UDZW11B-X

UDZW6.2B-X

10k

CRS03-W

10k

0.01

0.1

2.2K

4700p

100

22k

330k

100k

330k

220/10

1/50 1/50

1SS355W-X

100

0.22/50

3.3k

4.7k

0.1

47k

4.7k

220/6.3

8.2k

330P

47k

RF+

RRO

SCL

MSW

CD.LCH

KEY1

PSW

RR+

VDD

IFC

LR+

SW1

LCD.CE

MUTE.CONT

KEY0

LRO

SDA

SW2

LF+

DETACH

CD.RCH

RF-

RR-

LR-

LF-

CD8V

CD.RESET

STATUS

P.ICOFFSET

SUBQ

SQCK

MCLK

MDATA

MLD

TLOCK

FLOCK

CD.SENSE

D.GND

ACC5V

REMOCON

MSW

ENC1

ILL_10V

ENC2

LCD.SCK

LCD.SO

KEY0

KEY1

KEY2

SW5V

CD.RESET

MCLK

MDATA

MLD

KEY2

P.ICSTBY

FM.OSC

ENC1

ENC2

DIMMEROUT

SDA

SCL

MEMORY.IN

SD/ST

SW2

MONO

PSW

IFC.CONT

LCD.CE

REMOCON

FM/AM

IFC

MONO

SEEK/STOP

S.METER

MUTE

FM.OSC

JBUS.SCK

JBUS.SI

FM/AM

LF+

SD/ST

JBUS.INT

RRO

LRO

MUTE.CONT

CD.RCH

JBUS.SI

LR+

LF-

LR-

DETACH

CD.LCH

CH.R

RR+

SW1

RR-

FLOCK

RF-

IFC.CONT

CH.L

CH.R

SCK

JBUS.SO

S.METER

JBUS.SCK

JBUS.SO

JBUS.IO

LCD.SCK

SUBQ

SQCK

LCD.SO

TLOCK

CD.SENSE

STATUS

RF+

SEEK/STOP

JBUS.INT

SSM

MUTE

P.ICSTBY

P.ICOFFSET

Standard schematic diagrams

Main section

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