JVC KD-SX780 Service Manual Download Page 45

Page: 45 / 63

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

CD signal

CD changer signal

Rear signal

Front signal

Tuner signal

Standard schematic diagrams

Receiver & System control section

2-3

KD-SX8250/KD-SX780

C26

R757

IC771

PL701

CN701

C255

R323

R324

C39

Q976

R423

R424

Q964

C322

R721

R719

R717

R765

D961

R355

IC21

R26

R766

IC301

D891

D255

C891

R715

X701

R736

R737

C708

D976

R201

R101

R738

C713

C710

R747

R707

VSS

R702

R706

R767

MSW

C303

C103

R768

R703

C451

R701

VDD

R733

C452

IC341

L701

IC351

X21

C28

IC441

C345

C331

C441

C347

C352

C344

D991

C29

S702

R739

C33

R781

C32

R342

R344

R345

R343

C341

C960

C446

C445

C443

C343

R778

R777

R776

R775

R774

C332

C402

R686

C431

Q871

Q977

R755

R756

D951

R724

R732

C442

C342

C351

C432

C444

R31

R442

R444

R445

C302

R740

D722

R751

R441

R443

C952

Q351

R952

C311

C951

R741

D302

C323

R726

R11

D301

C401

R742

R709

Q891

C203

C312

D471

D964

C993

C994

C995

C996

C997

C998

D372

C992

C991

D371

D960

Q971

Q963

C17

IC251

IC252

D712

C403

C598

C313

R731

R729

R255

C346

C702

C253

R716

C252

R301

R401

D893

C261

C259

C260

R752

C588

R725

R708

C447

C258

R351

R352

R451

R452

C411

R263

R264

R265

D472

D962

R961

C31

R356

R472

R372

R471

R371

D324

IC961

R373

R374

R474

R473

R759

R753

R965

C257

D892

C714

IC701

R914

S701

C16

R25

C301

Q251

D256

R267

D992

D993

D994

D995

D996

TU1

D997

D998

R712

R711

R710

R713

D713

C772

J771

D711

R24

R23

C38

R33

R34

C22

C27

R22

C23

Q31

C10

VPP

IC702

RESET

X702

R748

S703

R769

C971

R14

C977

R735

R892

C357

L961

D965

R10

C35

C963

C966

BZ871

C699

C354

R871

C21

R29

R891

C353

C453

C454

R734

R714

C348

R347

C967

R102

C102

C202

R202

C969

C964

C965

R746

C968

C962

C364

R21

C365

C359

R685

C24

C873

Q951

Q371

Q372

C355

C361

R782

C362

R30

R341

C251

C254

R779

R773

R772

C771

R764

R754

R762

C308

C25

C711

R953

R954

R956

R957

C105

C305

D952

C309

R760

C304

C703

R346

C954

R969

R447

R446

B352

B351

C310

C872

D963

C961

C953

R966

R967

Q471

R744

D977

R745

R303

R302

C871

R304

R305

R404

B961

B962

C404

D251

R251

R252

R253

R254

D252

D253

R354

R353

R454

R972

R453

D254

R971

R256

C306

C408

C410

C307

C409

C407

R258

C406

R257

R727

C405

R722

R720

R718

R968

R331

R332

R431

R432

R259

R403

R402

C976

D351

C356

R750

R749

C358

R963

R962

D701

R758

C914

R376

R375

R476

R475

R357

Q472

R266

CN251

R268

R269

J931

R791

R270

R763

C11

C709

R358

R955

R951

R359

C970

C975

C371

C372

C205

C984

C983

C982

C981

C712

R32

C30

R27

R28

C34

C37

C36

C40

C41

CN901

D715

D717

D714

D716

C698

R12

R13

R271

R272

R15

R743

C724

C723

C722

C721

R723

C726

C725

D721

R730

R728

1/50

10/16

HD74HC126FP

2SB815/7/-X

QLL0033-001

QNZ0007-002

0.0068

4.7u

UN2211

0.001

UN2111

47k

UN2211

100/10

10k

47k

1SS355-X

47k

TB2118F

10( 1/4W)

47k

LC75412W

1SS355-X

0.047

10K

QAX0617-001Z

220/6.3

1SS133

0.047

0.1

4.7k

2.2k

4.7k

2.2k

47k

22/6.3

1/50

47k

4.7k

2.2/50

4.7k

47k

2.2/50

UN2211

BA3220FV

4.7u

LA47503

QAX0616-001Z

BA3220FV

47/16

2.2/50

100/10

2.2/50

4.7/25

CRS03

10p

QSW0451-001

0.01

330

0.01

22k

150k

33k

100/10

2200/16

2.2/50

47/16

100/10

100

22k

100k

10k

100

2.2/50

10/16

UN2211

2.2/50

UN2211

UN2111

1.2k

4.7k

1SS133

10k

2.2k

4.7/25

2.2/50

4.7/25

2.2k

22k

150k

10/16

UDZS5.6B-X

10k

33k

0.047

UN2211

12k

10/16

1/50

1SS355-X

22/16

2.2k

1SS355-X

4.7/25

2.2k

2SD601A( R)

1/50

0.22

1SS355-X

CRS03

100p

1SS355-X

100p

1SS355-X

1N5401TU

UN2211

2SB709A

120p

NJM4565M

LC75344M-X

LNJ308G81/1-3/X

22/6.3

4.7/25

0.033

2.2k

470k

2.2/50

0.1

0.01

0.047

220k

1SS355-X

22/16

10/16

47/10

10k

4.7/25

10k

2.2/50

0.01

10/16

100k

10k

22k

1SS355-X

CRS03

1k( 1/4W)

0.001

10k

820

UDZS10B-X

HA13164

2.2k( 1/10W)

2.2k

47k

10/16

1SS355-X

0.01

UPD784215AGCXXX

10k

QSW0451-001

2.2k

4.7/25

2SD1048/6-7

1SS355-X

2.2k

CRS03

QAU0258-001

CRS03

47k

LNJ308G81/1-3/X

0.01

QNZ0095-001

SLR-56MC3F

2.2k

0.001

470

220

47/6.3

10p

6.2k

0.047

UN2211

220/10

IC-PST600MG

UN2111

QAX0401-001

2.2k

QSW0534-001

100

22/16

6.8

QMFZ047-150-T

100/16

10k

0.022

QQR0703-001

CRS03

QNB0100-002

10k

2SB709A( R)

0.047

4.7k

10/16

47k

3.3k

0.047

220/10

QAN0002-001Z

0.1

390p

2.2k

1SS133

100/10

100

47k

390p

47k

10k

100/10

47k

220/10

0.0047

220/10

10/16

22/16

10k

220/10

47/16

4.7/50

10( 1/10W)

4.7/50

22/16

0.047

4.7/25

2SD601A( R)

2SD1048/6-7

100/16

4.7/25

100k

4.7/25

22k

33k

10/16

47/6.3

47k

22k

47k

0.047

47k

10k

0.1

0.047

22/16

0.047

180k

22k

56k

1000p

1SS133

0.001

10k

1/50

0.1

47k

0.22/50

2.2k( 1/8W)

47k

10/16

0.047

0.001

0.1/50

CRS03

2.2/50

22/16

12k

27k

0.01

2SD1048/6-7

UDZ11B-X

47k

10k

0.1/50

100k

470

100k

51k

1/50

1SS355-X

220k

1SS355-X

47k

1SS355-X

4.7k

100k

0.33

0.1

0.001

0.1

0.001

0.1

100k

0.33

47k

10k

1000p

4.7k

2.2k( 1/8W)

10k

100/6.3

1SS133

0.022

1.2k

47/16

1SS133

4.7k

9.1k

1SS355-X

10k

10/16

100

2.7k

2SD1048/6-7

820

QGA2006C1-04

180

510

47k

10k

330p

0.047

47k

100

47k

0.1

0.01

270p

0.047

0.1

0.01

10k

100p

39k

10k

0.01

0.0027

0.01

47p

100p

QNZ0002-001

0.47

6.8

220/10

4.7k

10k

47k

22p

27p

47k

47/6.3

0.01

1SS355-X

820

10M

SW5V

PLLCE

VDD5V

PLLDA

PLLCL

PLLDI

GND

BUZZER

MUTE

10V

SUBCE

CD.L

SD/ST

CTRL

CH.R

CD-RW

KEY0

ANT

PSW

REM

10V

CD.R

EVOLCE

CD.R

AUX.R

CH.R

ENC2

LCDDA

LCDCL

LCDCE

BUZZER

KEY2

ACC5V

VOLDA

VOLCL

SUB.MUTE

PON

ENC2

GND

LCDCE

CD8V

SCK

CH.L

I/O

VDD5V

KEY1

ENC1

BUCK
CCE

SW5V

RST

BUS0

BUS1

BUS2
BUS3

LCDDA

LCDCL

KEY0

FM/AM

I/O

CH.L

KEY2

SW2

MSW

CDON

CD-RW
BUS0

INT

CD.L

RST

AUX.L

SW1

BUS1

TELMUTE

ILL

SCK

CCE

BUCK

BUS3

BUS2

A.GND

AUX.R

AUX.L

A.GND

VOLCL

PON

VOLDA

SUBCE

GND

SUB.MUTE

KEY1

MUTE

PSW

SW1

SW2

SEEK/STP

MSW

ANT

CTRL

SD/ST

MONO

SEEK/STP

CDON

INT

FM/AM

PLLCE

PS2

REM

PLLDA

PLLCL

PLLDI

TELMUTE

ILL

ENC1

VOLCL

VOLDA

EVOLCE

w w w . x i a o y u 1 6 3 . c o m

Q Q 3 7 6 3 1 5 1 5 0

T E L

1 3 9 4 2 2 9 6 5 1 3

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Summary of Contents for KD-SX780

Page 1: ...ricity Disassembly method Adjustment method 1 2 1 3 1 4 1 18 Flow of functional operation unit TOC read Maintenance of laser pickup Replacement of laser pickup Description of major ICs 1 19 1 21 1 21 1 22 SUBWOOFER LINE OUT 4V 2V DIMMER FINDER SILVER BLACK Difference point KD SX8250 KD SX780 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL...

Page 2: ...f this system Safety precaution CAUTION Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 3: ...fter replacement return the shorted parts to their original condition Refer to the text 2 Do not use a tester to check the condition of the laser diode in the optical pickup The tester s internal power source can easily destroy the laser diode 1 2 Handling the traverse unit optical pickup 1 Do not subject the traverse unit optical pickup to strong shocks as it is a sensitive complex unit 2 Cut off...

Page 4: ...front chassis toward the front 1 2 3 Removing the front chassis See Fig 2 to 4 Remove the four screws B attaching the heat sink on the left side of the body and remove the heat sink 1 Removing the heat sink See Fig 5 Joint c Heat sink Fig 2 Fig 1 Fig 3 Fig 4 Fig 5 Front panel unit Front chassis A B Front chassis Joint a Joint a Joint b Joint b B B B Joint c www xiaoyu163 com QQ376315150 9 9 2 8 9 ...

Page 5: ...k of the body 1 Removing the rear panel See Fig 7 Prior to performing the following procedure remove the front chassis the heat sink bottom cover and the rear panel Remove the two screws E attaching the main amplifier board assembly on the top cover Disconnect connector CN501 on the main amplifier board assembly from the cassette mechanism assembly 1 2 Removing the main amplifier board assembly Se...

Page 6: ...l assembly Remove the four screws G attaching the rear cover on the back of the front panel assembly Unjoint the nine joints g with the front panel and the rear cover Remove the control switch board on the back of the front panel 1 2 3 CD mechanism assembly F F Top cover Fig 9 G G G G Fig 10 Fig 12 Fig 11 LCD Key control board F Joints g Joints g Joints g Joints g Front panel Rear cover www xiaoyu...

Page 7: ...connector board See Fig 3 to 5 Before disconnecting the flexible wire from the pickup solder the short circuit point on the pickup No observance of this instruction may cause damage of the pickup CAUTION Unsolder the short circuit point after reassembling CAUTION Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 A A A B B Joints a Joints a Top cover Top cover Connector board DET switch Pickup Pickup Short circuit Joi...

Page 8: ... them with care CAUTION When reassembling make sure that the three shafts on the underside of the chassis unit are inserted to the dampers certainly CAUTION Fig 3 Fig 6 Fig 8 Fig 7 B Connector board DET switch DET switch Pickup Short circuit Joints b Tab c Feed sw holder Tab c Suspension spring L Suspension spring L Suspension spring R Suspension spring R Chassis unit Chassis unit Frame Frame Shaf...

Page 9: ... clamper assembly in the direction of the arrow to release the two joints d 1 2 Removing the clamper assembly See Fig 9 and 10 When reassembling connect the wire from the loading feed motor assembly to the flame as shown in Fig 11 CAUTION Fig 9 Fig 10 Fig 12 Fig 11 Clamper arm spring Clamper arm spring Chassis rivet assembly Joint d Joint d Clamper assembly Clamper assembly Joint d Joint d Chassis...

Page 10: ... the pickup unit upward with the shaft and the feed sw holder then release the joint f of the feed sw holder in the direction of the arrow The joint g of the pickup unit and the feed rack is released and the feed sw holder comes off Remove the shaft from the pickup unit Remove the screw F attaching the feed rack to the pickup unit 1 2 3 4 5 Removing the pickup unit See Fig 13 to 17 Make sure that ...

Page 11: ...he direction of the arrow to release the joint k and pull out upward 1 Removing the trigger arm See Fig 18 and 19 When reassembling insert the part l and m of the trigger arm into the part n and o at the slot of the chassis rivet assembly respectively and join the joint k at a time CAUTION Fig 18 Fig 19 Fig 20 Joint k Trigger arm Trigger arm Chassis rivet assembly Chassis rivet assembly Part n Par...

Page 12: ...direction of the arrow to release the two joints t The select lock arm spring comes off the select lock arm at the same time 1 2 3 Removing the select arm L select lock arm See Fig 21 and 22 When reattaching the select arm L check if the points w and x are correctly fitted and if each part operates properly CAUTION Reverse the above removing procedure REFERENCE Fig 21 Fig 22 Fig 23 Fig 25 Fig 24 T...

Page 13: ...ing at the same time 1 2 Removing the select arm R link plate See Fig 21 and 22 When reattaching the select arm R check if the part c is correctly fitted and if each part operates properly CAUTION Reverse the above removing procedure REFERENCE Before removing the link plate remove the select arm L REFERENCE Fig 26 Fig 21 Fig 22 Top plate Top plate Select arm L Select lock arm Select lock arm Selec...

Page 14: ...f 1 2 3 Removing the loading roller assembly See Fig 27 to 29 When reassembling reattach the left and right roller guide springs to the lock arm rivet assembly before reattaching the lock arm rivet assembly to the chassis rivet assembly Make sure to fit the part h of the roller guide spring L inside of the roller guide Refer to Fig 30 CAUTION Fig 27 Fig 28 1 Fig 28 2 Fig 29 Fig 30 Roller guide Rol...

Page 15: ... the loading gear 5 1 2 Removing the loading gear 5 6 and 7 See Fig 31 and 32 Fig 31 Fig 32 J J Loading gear bracket Loading gear bracket Loading gear 6 Loading gear 5 Loading gear 6 Loading gear 5 Loading gear 7 Loading gear 3 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 ...

Page 16: ...ssis rivet assembly upward Detach the loading gear plate rivet assembly from the shaft of the chassis rivet assembly upward while releasing the joint l Pull out the loading gear 4 1 2 3 4 5 6 7 8 9 10 Removing the gears See Fig 33 to 36 Fig 33 Fig 34 Fig 36 Fig 35 Slot j Slot j Joint k Feed gear Loading plate assembly Slide plate Joint l Loading gear 4 Loading gear 2 Loading gear 2 Loading gear 4 ...

Page 17: ...he turn table on top of the body Unsolder the wire on the connector board if necessary 1 2 Removing the turn table spindle motor See Fig 37 and 38 Fig 37 Fig 38 K K Turn table Turn table Spindle motor www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu16...

Page 18: ...nsion cable for adjusting Standard volume position Balance and Bass Treble volume Indication 0 Loudness OFF FM 1 3 87 5MHz 107 9 MHz AM 530kHz 1710kHz Dummy load Exclusive dummy load should be used for AM and FM For FM dummy load there is a loss of 6dB between SSG output and antenna input The loss of 6dB need not be considered since direct reading of figures are applied in this working o standard ...

Page 19: ...cessor commands SEL TC94A14FA 38 LD CN501 15 No disc display When the disc correctly rotates Microprocessor commands DMO TC94A14FA 41 Spindle motor IC561 1 Tracking Servo Loop ON RF signal Rough Servo Mode v CLV Servo Mode Program Area CLV Servo Mode Lead In Area Digital 0 Flow of functional operation unit TOC read 83 82 81 0V 6V 4V 2V OFF ON 3 3V Hi Z FEO TA2157 15 2 2V 84 3 3V 0V 4V 0V 84 86 A20...

Page 20: ... pins 8 9 and 15 Check the pickup and its connections Is the disk rotated Does the RF signal appear at TP1 Is the RF waveform at TP1 distorted Proceed to the Tracking section Is 4V present at IC561 pins 6 and 7 Check the spindle motor and its wiring Check the circuits in the vicinity of IC501 19 24 or the pickup Is 4V present at IC521 pins 41 Check IC521 and IC501 Check the vicinity of IC561 When ...

Page 21: ...ed value the laser diode is almost worn out and the laser pickup should be replaced If the semi fixed resistor is adjusted while the pickup is functioning normally the laser pickup may be damaged due to excessive current Is RF output 1 3 0 4Vp p YES NO O K Replace it Replacement of laser pickup Turn of the power switch and disconnect the power cord Replace the pickup with a normal one Refer to Pic...

Page 22: ... WR RD A16 A19 A8 A15 A0 A7 AD0 AD7 SCK0 SO0 SI0 ASCK2 SCK2 TxD2 SO2 RxD2 SI2 ASCK1 SCK1 TxD1 SO1 RxD1 SI1 ANO0 ANO1 AV REF1 AV SS TIMER COUNTER 16 BITS TIMER COUNTER1 8 BITS TIMER COUNTER2 8 BITS 78K IV CPU CORE ROM RAM TIMER COUNTER5 8 BITS TIMER COUNTER6 8 BITS TIMER COUNTER7 8 BITS TIMER COUNTER8 8 BITS WATCH TIMER WATCHDOG TIMER REAL TIME OUTPUT PORT D A CONVERTER A D CONVERTER CLOCK OUTPUT C...

Page 23: ... signal input 0 Key control signal input 1 Key control signal input 2 Level meter input Pul down S METER level input GND connection Non connected Non connected 5V connection J BUS data input J BUS data output J BUS clock I O J BUS data I O terminal Data output for LCD driver Clock output for LCD driver Chipenable output to LCD driver Buzzer output Non connected Non connected Non connected CD tray ...

Page 24: ...n Dimmer detection input At L dimmer ON POWER SAVE 1 ACC and syschronization POWER SAVE L At operation H POWER ON OFF switch outut At POWER ON H The CD power supply control signal output At CD H Mute output At mute ON L Non connected Non connected Non connected 5V connection Non connect Data output by which IC for electronic volume is controlled Clock output by which IC for electronic volume is co...

Page 25: ...R RGND CR CR 1 7 8 3220 14 BA3220FV X IC341 IC441 Line out amp 1 Pin layout 2 Block diagram www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 26: ...s 5V when M or H level applies to CTRL pin Output for ACC detector L ANT output OFF H ANT output ON Connected to VCC Low battery detect Output voltage is 9V when M or H level applied to CTRL pin L BIAS OFF M BIAS ON H CD ON Output voltage is 8V when H level applied to CTRL pin Adjustment pin for ILM output voltage Output voltage is 10V when M or H level applies to CTRL pin Connected to GND 1 2 3 4...

Page 27: ... X L H Y Z H L 1 2 3 4 5 6 7 14 13 12 11 10 9 8 HD74HC126FP X IC771 Buffer 1 Terminal layout 2 Block diagram 3 Pin function 1C 1A 1Y 2C 2A 2Y GND Vcc 3C 3A 3Y 4C 4A 4Y Note H High L Low X H and L Z H L X www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoy...

Page 28: ... 11 16 14 13 25 15 10 4 1 12 22 17 19 18 21 23 24 2 3 5 8 7 9 20 6 LA47503 IC351 Power amp 1 Terminal layout www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 29: ...wer GND Output for rear Lch Power input Output for front Muting control input Output for front Power GND No connection AC CONT1 GND1 OUTFR STBY OUTFR Vcc1 2 OUTRR GND2 OUTRR VREF INRR INFR SGND INFL INRL ONTIME OUTRL GND3 OUTRL Vcc3 4 OUTFL MUTE OUTFL GND4 NC AC CONT1 GND1 OUTFR STBY OUTFR Vcc1 2 OUTRR GND2 OUTRR VREF INRR INFR SGND INFL INRL ONTIME OUTRL GND3 OUTRL Vcc3 4 OUTFL MUTE OUTFL GND4 NC...

Page 30: ... all output MUTE It is ON OF as for all output Signal system GND 16 15 H ON L OFF Level sift Level sift Level sift Level sift H L VN1_SW H OP AMP_A L OP AMP_B LA6579H X IC561 CD driver 1 Terminal layout www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu...

Page 31: ...connection Signal system power supply Standard voltage impression terminal Output ON OFF terminal CH1 input OP_AMP switch terminal Signal system GND CH1 AMP_B non reversing input terminal CH1 AMP_B reversing input terminal CH1 input terminal and input OP_AMP output terminal 1 Frame FR at the center becomes system GND P GND power Please give as the lowest potential with signal system GND S GND VIN1...

Page 32: ...h when this pin goes from high to low The internal analog switches operate at this point Data transfer is enabled when this pin is high Connection to the 0 5 x VDD voltage generator circuit used as the analog signal ground To a power supply ripple countermeasure application must connect a capacitor of about 10 F between this pin and AVSS VSS Ground Volume output Input signal connections Symbol Fun...

Page 33: ...54 53 52 51 55 59 60 61 62 58 50 49 63 64 48 1 46 3 47 2 L1 L2 L3 L4 L6 R1 R2 R3 R4 R6 L5M L5P R5M R5P LSELO RSELO LCT RCT LVRIN RVRIN Single end input terminal Differential motion input terminal Input selector output terminal Then terminal for roudness CR for a high region amends is connected for LCT RCT and LVRIN RVRIN and CR for a low region amends is connected between LCT RCT and GND Volume eq...

Page 34: ... impedance The fader output terminal A rear reception desk side side can be separately narrowed respectively L R of the amount of attenuation is the same VDD 2voltage generation part Connect the capacitor of about several 10 F as a counter measure for ripple of power supply between Vref AVSS for VSS Power supply terminal System logic grand terminal Analog grand terminal External control mute termi...

Page 35: ...Synchronization clock DI Transfer data Display off control input INH L VSS Display forced off Used for applying the LCD drive 2 3 bias voltage externally Must be connected to VDD2 when a 1 2 bias drive scheme is used Used for applying the LCD drive 1 3 bias voltage externally Must be connected to VDD1 when a 1 2 bias drive scheme is used Power supply connection Provide a voltage of between 3 0 and...

Page 36: ... K 1 x0 5 x2 x0 5 x2 PIN SEL APC SW TEB TE BAL TEB TE BAL RFGC AGC Gian VCTRLPIN VCC HiZ GND 50 0 50 12dB 6dB 0dB Normal mode 0dB Normal mode 0dB CD RW mode 12dB APC ON APC ON APC OFF LDO H TA2157FN X IC501 RF amp 2 Block diagram 1 Terminal layout 24 13 1 12 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 89249829...

Page 37: ...m RF signal peak detection output pin AGC FE TE amp gain change pin Reference voltage VRO output pin VRO 1 2VCC When VCC 3 3V Focus error signal generation amp output pin Focus error signal generation amp negative phase input pin Signal amp output pin for track count Combining RFRP signal and TEO signal with TC94A14F FA configures tracking search system Signal generation amp input pin for track co...

Page 38: ...ock input Serial data output Register control pin I O ports I O ports Non connect Non connect Single power supply for REF frequency block O I I I O O I O I O Pin No Symbol I O Function 13 14 15 16 17 18 19 20 21 22 23 24 IFC VDD FMIN AMIN DGND FMCP VT AMCP VCC RF AGND XIN IF signal input Power pins for digital block FM band local signal input AM band local signal input Connect to GND for digital c...

Page 39: ...y command L R channel clock output pin L for L channel and H for R channel Output polarity can be inverted by command Audio data output pin MSB first or LSB first selectable by command Digital data output pin Outputs up to double speed playback Correction flag output pin When set to H AOUT output cannot be corrected by C2 correction processing Digital 3 3V power supply voltage pin Digital GND pin ...

Page 40: ...n RF amplitude adjustment control signal output pin Tracking balance control signal output pin APC circuit ON OFF signal output pin At laser on high impedance with UHS L H output with UHS H Analog 3 3V power supply voltage pin Feed equalizer output pin Disc equalizer output pin Digital GND pin Digital 3 3V power supply voltage pin Test input pin Normally fixed to L System clock oscillator GND pin ...

Page 41: ...NJM4565M WE IC251 Ope amp VCC 22K ROUT Comparator Limiter AMP I V Detection crimp BPF RPM7138 V4 IC602 Remote control receiver www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 42: ...NESS UNIT 10 1 1Chome Ohwatari machi Maebashi city 371 8543 Japan No 49690 200202 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 43: ...NE AMP POWER AMP IC351 E VOL IC301 FM AM TUNER TU1 TU L R CH L R CD L R SUB CE SUB MUTE VOL CL VOL DA SYSTEM CONTROLLER IC701 CD PICKUP UNIT MECHA SWITCH SW1 2 CD LPF IC571 CHANGER CONTROL IC771 FRONT L R REAR L R FRONT L FRONT R REAR L REAR R LCDDA LCDCLK LCDCE KEY0 2 COM1 3 CN601 CN701 CN251 SPINDLE FEED only for KD SX8250 only for KD SX8250 AUX L R E VOLUME SUB WOOFER IC251 IC252 AUX JACK J601 ...

Page 44: ... 2 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 45: ...V 47 16 2 2 50 100 10 2 2 50 2 2 50 4 7 25 CRS03 10p QSW0451 001 0 0 01 330 0 01 22k 22k 150k 33k 100 10 2200 16 2 2 50 47 16 100 10 100 10 100 22k 100k 10k 100 2 2 50 10 16 UN2211 1M 2 2 50 UN2211 UN2111 1 2k 4 7k 1SS133 10k 2 2k 4 7 25 4 7 25 2 2 50 2 2 50 4 7 25 2 2k 22k 22k 150k 10 16 0 UDZS5 6B X 10k 33k 33k 0 047 UN2211 12k 10 16 1 50 0 1SS355 X 22 16 2 2k 0 1SS355 X 4 7 25 0 2 2k 2SD601A R ...

Page 46: ... 100 100 10 100 10 0 0068 0 18k 0 330k 82k 330k 82k 150 1 10W 100 10 150 4 7k 8 2k 18k 0 10p 4 7 25 15k 10p 0 4 7 25 1 5k 5 1k 1M 33k 12k 33k 33k 12k 120p 120p 0 01 2SD601A R 1 5k 1 5k 0 039 0 039 0 039 0 039 47u 4 7u 4 7u 100 10 47 6 3 100 10 22k 22k 22k 22k 0 001 20k 1 10W 0 01 56k 0 1 0 1 0 047 100 100 0 047 100 100 0 047 100 10 0 01 4 7k 4 7k 4 7k 4 7k 1 50 0 01 0 01 TA2157FN X 0 01 100 10 0 0...

Page 47: ...SPW310BS BRS 430 47k UN2211 1k 0 0 047 0 22 1SS355 X 470 0 390K 1SS355 X 1SS355 X UDZS5 1B X 0 22 0 01 220P 4 7 6 3 SML 310LT MN X 0 1SS355 X 1SS355 X UDZS5 6B X 820 2SB815 7 X NSPW310BS BRS NSPW310BS BRS 430 430 0 0 LCDCE LCDDA LCDCL KEY0 AUX L AUX R A GND ACC5V REM 10V LCDCL S22 S62 KEY1 ENC2 ENC1 10V ACC5V COM3 COM2 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 S40 S41 KEY...

Page 48: ...544 C545 C546 C547 C548 C549 C550 C551 C555 C561 C562 C563 C582 C585 C592 C595 C596 C597 C699 C702 C703 C708 C709 C710 C711 C714 C721 C722 C723 C724 C726 C771 C772 C871 C872 C873 C914 C951 C953 C954 C960 C961 C962 C963 C964 C965 C967 C968 C969 C971 C975 C976 C977 C981 C982 C983 C984 CN251 CN501 CN701 CN901 D1 D2 D3 D4 D251 D252 D253 D254 D255 D256 D324 D351 D561 D701 D702 D703 D704 D705 D706 D707 ...

Page 49: ...arts list Block No MB Electrical parts list Block No 01 02 Packing materials and accessories parts list Block No M3 M5 KD SX8250 KD SX780 3 2 3 5 3 8 3 14 Area suffix J Northern America www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www ...

Page 50: ...2 14 61 58 36 44 41 38 7 7 1 3 2 34 46 43 42 7 50 49 33 37 35 45 39 40 47 48 53 12 54 53 67 51 53 52 63 62 60 64 59 56 73 9 72 11 11 8 4 8 66 65 74 68 9 69 71 26 20 75 75 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 51: ...KZ4786 002 OIL DAMPER 1 25 FSKW4012 001 T SPRING 1 FOR L LEVER TOP 26 GE40144 001A T SPRING 1 FOR RELEASE LEVER 27 VKW5262 001 T SPRING 1 FOR L LEVER R 28 QYSDSF2006M SCREW 1 DAMPER L LEVER R 29 VKW5263 002 T SPRING 1 FOR L LEVER L 30 VKZ4777 001 MINI SCREW 1 LOCK LEVER O L 31 FSKW4013 002 T SPRING 1 FOR OPEN LEVER 32 GE40140 001A BLIND 1 33 GE10041 001A FRONT PANEL 1 KD SX780 GE10041 002A FRONT P...

Page 52: ...MODULE 1 LCD1 59 QNZ0449 001 RUBBER CONNE 1 60 QNZ0450 001 RUBBER CONNE 1 61 GE30375 001A LCD CASE 1 62 FSJK3028 001 LCD LENS 1 63 FSYH4061 001 LIGHTNG SHEET 1 64 FSKS3013 001 LENS CASE 1 65 GE40136 001A IC BRACKET 1 66 GE40124 001A REG BRACKET 1 67 FSKS3017 002 LED HOLDER 1 68 GE30382 003A REAR BRACKET 1 69 QYSDST2606Z SCREW 1 REAR BKT REG BKT 70 QYSDST2606Z SCREW 1 REAR BKT ANT JACK 71 QYSDST260...

Page 53: ...91 92 113 88 89 82 87 20 18 115 90 32 30 38 114 11 85 25 73 111 33 34 74 72 35 26 31 22 36 116 29 112 19 61 24 112 62 21 38 76 95 96 14 97 100 123 81 94 77 75 74 73 84 94 101 100 122 93 75 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http w...

Page 54: ...0526T SELECT L ARM SP 1 32 30320527T SUSPENSION SPG 2 33 30320529T SELECT ARM R 1 34 30320530T LINK PLATE 1 35 30320531T LINK PLATE SPG 1 36 30320523T CUSHION F 1 37 30320524T CUSHION R 2 38 30320528T SUSPENSION SPGL 2 61 69011614T PICKUP OPT 725 1 62 64180406T DET SW ESE22 1 71 303210301T CONN PWB ASS Y 1 72 30321002T MODE SW 1 73 30321003T LOAD MOTOR WIRE 1 74 30321005T MODE SW WIRE 1 75 3032100...

Page 55: ...LATE SPG 1 100 30321133T LDG ROLLER 2 101 18211223T COLLAR SCREW 1 111 9P0420031T SCREW M2X3 6 112 9P0420041T SCREW M2 X 4 2 113 9B0320041T SCREW M2 X 4 1 114 9C0117183T SCREW 2 115 9C0120203T SCREW 1 116 9C0317503T SCREW 1 121 9W0130170T PW 3 5X8X0 3 1 122 9W0513060T HL WASHER 1 123 9W0710070T L WASHER 1 124 9E0100152T E RING 1 125 9W0113020T PW 2 1X4X0 13 1 Parts list CD mechanism Block No MBMM ...

Page 56: ... 20 16V C 331 QERF1HM 225Z E CAPACITOR KD SX8250 C 332 QERF1HM 225Z E CAPACITOR KD SX8250 C 341 QERF1AM 107Z E CAPACITOR KD SX8250 C 342 QERF1EM 475Z E CAPACITOR KD SX8250 C 343 QERF1AM 107Z E CAPACITOR KD SX8250 C 344 QERF1EM 475Z E CAPACITOR KD SX8250 C 345 QERF1CM 476Z E CAPACITOR KD SX8250 C 346 QERF1HM 225Z E CAPACITOR 2 2MF 20 50V C 347 QERF1HM 225Z E CAPACITOR 2 2MF 20 50V C 348 QERF1AM 107...

Page 57: ...3X C CAPACITOR C 715 NCS31HJ 101X C CAPACITOR C 721 NDC31HJ 8R0X C CAPACITOR C 722 NCS31HJ 270X C CAPACITOR C 723 NCS31HJ 270X C CAPACITOR C 724 NCS31HJ 220X C CAPACITOR C 725 NCB31EK 103X C CAPACITOR C 726 QERF0JM 476Z E CAPACITOR 47MF 20 6 3V C 771 NCB31EK 473X C CAPACITOR C 772 NCB31HK 103X C CAPACITOR C 872 QERF1HM 104Z E CAPACITOR 10MF 20 50V C 873 QERF1EM 475Z E CAPACITOR 4 7MF 20 25V C 914 ...

Page 58: ...RS T TRANSISTOR Q 871 UN2211 X TRANSISTOR Q 951 2SD601A R X TRANSISTOR Q 963 2SB709A R X TRANSISTOR Q 964 UN2211 X TRANSISTOR Q 971 UN2211 X TRANSISTOR KD SX8250 Q 976 UN2111 X TRANSISTOR Q 977 UN2111 X TRANSISTOR R 1 NRSA63J 0R0X MG RESISTOR R 2 NRSA63J 223X MG RESISTOR R 3 NRSA63J 472X MG RESISTOR R 4 NRSA63J 473X MG RESISTOR R 5 NRSA02J 332X MG RESISTOR R 6 NRS181J 6R8X MG RESISTOR R 7 NRSA63J ...

Page 59: ...G RESISTOR R 472 NRSA02J 821X MG RESISTOR R 473 NRSA63J 222X MG RESISTOR R 474 NRSA63J 222X MG RESISTOR R 475 NRSA02J 101X MG RESISTOR R 476 NRSA02J 101X MG RESISTOR R 503 NRSA63J 823X MG RESISTOR R 504 NRSA63J 823X MG RESISTOR R 505 NRSA63J 334X MG RESISTOR R 506 NRSA63J 334X MG RESISTOR R 507 NRSA02J 220X MG RESISTOR R 508 NRSA02J 220X MG RESISTOR R 509 NRSA63J 823X MG RESISTOR R 510 NRSA63J 563...

Page 60: ...TOR R 755 NRSA63J 122X MG RESISTOR R 756 NRSA63J 472X MG RESISTOR R 757 NRSA63J 102X MG RESISTOR R 758 NRSA63J 103X MG RESISTOR R 759 NRSA63J 473X MG RESISTOR R 760 NRSA63J 103X MG RESISTOR R 762 NRSA63J 103X MG RESISTOR R 763 NRSA63J 103X MG RESISTOR R 764 NRSA63J 473X MG RESISTOR R 765 NRSA63J 473X MG RESISTOR KD SX780 R 766 NRSA63J 473X MG RESISTOR KD SX8250 R 767 NRSA63J 473X MG RESISTOR R 769...

Page 61: ...STOR R 625 NRSA02J 122X MG RESISTOR R 626 NRSA02J 122X MG RESISTOR R 627 NRSA02J 561X MG RESISTOR R 628 NRSA02J 561X MG RESISTOR R 629 NRSA02J 561X MG RESISTOR R 630 NRSA02J 561X MG RESISTOR R 631 NRSA02J 122X MG RESISTOR R 632 NRSA02J 122X MG RESISTOR R 633 NRSA02J 911X MG RESISTOR R 634 NRSA02J 911X MG RESISTOR R 635 NRSA02J 182X MG RESISTOR R 636 NRSA02J 182X MG RESISTOR R 637 NRSA02J 122X MG R...

Page 62: ...M M 5 P1 P6 P7 P7 P5 A18 A19 A17 P2 A15 A14 P4 P3 A16 A1 A8 KIT A9 A13 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 63: ...D 1 KD SX8250 A 5 LVT0717 001B TROUBLE SHEET C 1 A 6 BT 52004 2 WARRANTY CARD 1 KD SX780 BT 52005 1 WARRANTY CARD 1 KD SX8250 A 7 BT 51028 1 REGISTER CARD 1 KD SX8250 BT 51020 2 REGISTER CARD 1 KD SX780 A 8 BT 20071B JVC CENTER LIST 1 A 9 VKZ4027 202 PLUG NUT 1 A 10 VKH4871 001SS MOUNT BOLT 1 A 11 VKZ4328 001 LOCK NUT 1 A 12 WNS5000Z WASHER 1 A 13 GE40130 001A HOOK 2 A 14 RM RK50 REMOCON 1 A 15 LI...

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JVC KD-SX780, Service Manual

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