1

11/120

1912

5/280

XDD3248

15/230

13/170

7/190

11/200

3/300

CN603

5

CN901

CN805

21

13 19 15

CN816

21

CN111

CN815

CN827

CN701

15

CN109

CN704

CN807

CN951

CN110

17

15

CN813

1915

XDD3251

CN122

15

CN108

CN101

17/110

1905

CN130

XDD3259

1907

13

7

CN105

CN803

CN302

6

CN1903

CN103

1919

XDD3235

1911

11

CN304

CN307

XDD3189

CN701

CN252

XDX3066

810

CN702

J43

CN251

CN800

971

5/125

J42

D15A05-125-2651

511

XDD3200

XDX3064

CN401

404

J22

WIRE INDICATION

7: Number of contacts (pin)

140: Insulation length (mm)

E.g. 7/140

XXM3012

FAN

A 1/3 - A 3/3

A

FRONT DISPLAY ASSY (XWZ4283)

H

F

P

DIGITAL INPUT ASSY (XWZ4298)

5.1CH INPUT ASSY (XWZ4341)

M

N

MAIN ASSY

(XWK3356)

VIDEO ASSY (XWZ4291)

POWER PACK ASSY (XWZ4323)

REGULATOR ASSY (XWZ4315)

DSP ASSY

B

C 1/2 -

C 2/2

C

ROTARY ENCODER ASSY (XWZ4286)

I

FRONT MINI JACK ASSY (XWZ4296)

L

(AWX8980)

FM/AM TUNER

UNIT (AXX7170)

(Note : No schematic diagram)

2 3 4

4. BLOCK BIAGRAM

4.1 OVERALL WIRING CONNECTION DIAGRAM

A

B

C

D

E

F

14

1

VSX-418-K

2 3 4

6/400

AC CORD

FU1

CN51

11/300

J21

D20PYY1130E

D20PYY0410E

J52

4/100

CN1201

851

J47

XDX3065

891

J5J7 J4J3 J6

1551

470

D15A03-100-2651

471

D15A03-100-2651

J44

3/100

512

J41

3/100

501

2.0mm CABLE CONNECTOR

1.5mm FLAT CABLE

1.25mm FFC

1.25mm REVERSE FFC

2.0mm FLAT CABLE

1.25mm FFC CONNECTOR

1.5mm CABLE HOLDER

2.0mm CABLE HOLDER

1.0mm FFC

PH CONNECTOR

B*B-PH-K-S

B*B-EH EH CONNECTOR

BOARD IN

1.0mm FFC CONNECTOR

1.25mm FFC CONNECTOR(L)

AC CODE CONNECTOR

1.25mm BOARD to BOARD PLUG

1.25mm BOARD to BOARD SOCKET

AC CODE SOCKET

2.0mm BOARD to BOARD SOCKET

2.0mm BOARD to BOARD PLUG

MAIN TRANS

ZWNH1672G22-6-21J

Y1 (N)

Y2 (L)

Y6 (L)

ZWNH1672G 22-4-15J

BROWN

BLUE

ZWNH1672G22-1-22J

Y9

230V,50Hz

YELLOW

120V

BROWN

Y6

7

YELLOW

42365 1

YELLOW

BLUE

110V

Y4 Y3 Y5Y7 Y8

10V

Y1

0V

MAIN TRANS

D

G

Q

TRANS2 ASSY (XWZ4334)

(XWZ4302)

PRIMARY ASSY

TRANS3 ASSY (XWZ4337)

POWER KEY ASSY (XWZ4287)

J

JOG ASSY (XWZ4289)

K

HEAD PHONE ASSY (XWZ4321)

O

k

When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS

LIST" or "PCB PARTS LIST".

k

The > mark found on some component parts indicates the importance of the safety

factor of the part. Therefore, when replacing, be sure to use parts of identical designation.

k

: The power supply is shown with the marked box.

5

6 7 8

A

B

C

D

E

F

5

6 7 8

VSX-418-K

15

1

SW

CN307 CN105

SL/SR

C

OPT1

COAX1

COAX2

(DIR)

CD-R OUT

VCR/DVR OUT

(ADC)

LPF

(for DECODE)

DSPC56371AF180

DSP IC

CN701

CN603CN1903

CN109

(SW)

NJM4565

IC104

AK4114VQ

(SL/SR)

(C)

IC103

IC104

AK4626AVQ

(CODEC)

(DAC)

(FL/FR)

IC105

DVD/LD

CD-R/TAPE

TV/SAT

L/R

Front Audio

CD

VCR/DVR

L/R

(For MCACC Setup)

MODULE

TUNER

L/R

BLOCK DIAGRAM FOR VSX-418

B

DSP ASSY

F

5.1CH INPUT ASSY

M

DIGITAL INPUT ASSY

A

MAIN ASSY

4.2 BLOCK DIAGRAM

A

2 3 4

B

C

D

E

F

16

VSX-418-K

1

2 3 4

5

GND

DVR REC

MONITOR

TV/SAT

DVD/LD

CN310

DVR

(COMPOSITE SEL)

NJM2595M

POWER PACK ASSY

IC301

R299

STBY

OSD

IC302

NJM2243M

(VIDEO/OSD SEL)

IC851

(PDC132A)

0

CN111 CN302

(SL/SR)

(C)

SW1

SW2

A. MUTE

Q303

SW PREOUT

Q631

30dB

RY753

C

A. MUTE

Q651

30dB

RY752

SL/SR

Ton e

(FL/FR)

EVOL/SELECTOR

IC108

9.5dB

BD3474KS2

FUNCTION

SELECTOR

CN110 CN704

CN702

IC601 (1/2) IC603 (2/3)

IC601 (2/2) IC603 (3/3)

IC603 (1/3)

: AUDIO SIGNAL FLOW

: VIDEO SIGNAL FLOW

Q601

30dB

RY751

FL/FR

Q1551

A. MUTE

1551

O

HEAD PHONE ASSY

C

POWER PACK ASSY

P

VIDEO ASSY

6 7 8

A

B

C

D

E

VSX-418-K

5

6 7 8

F

17

1

DSP ASSY Block Diagram

PQ1LAX95MSPQ PQ1LAX95MSPQ

1.25V 3.3V

Analog 2ch in(1)

24.576MHz

SPDIF out(2)

Analog 8ch OUT

6ch OUT(AWX8980 only)

COAX in(2)

SPDIF in(5)

AWX8805,

AWX8806

AWX8805,AWX8809 only

only

XM in

XM Analog 2ch OUT

AWX8809,

STBY

AWX8810, AWX8812,

AWX 8980

only

A5V

D5V

DIR

AK4114VQ

SW

TC74VHC157

CODEC

AK4626AVQ

SDTO LRCK,BCLK OUT

DSP

DSPC56371AF180

LRCK,BCLK IN SDTI MCLK

SW

TC7WH125

SERIAL ROM

PDC151A8 for

AWX8809, AWX8810

PDC152A8 for

AWX8805, AWX8806

XMDT

F2621E-01

DAC

AK4387ET

Lip Sync

ML87V5002

AWX8805, AWX8809 only

Control in

Control out

5 3

LEVEL

SHIFTER

TC74VHC08

3 5

LEVEL

SHIFTER

TC74VHCT08

3 5

LEVEL

SHIFTER

TC74VHCT541

IC801

IC871

IC802

X801

IC851

IC953

IC951

IC901IC902

IC952

IC601

IC401

IC751

IC851

IC551

IC701

DSP ASSY (VSX-418 : AWX8980)

B

4.3 DSP BLOCK DIAGRAM

A

B

2 3 4

C

D

E

F

18

1

VSX-418-K

2 3 4

1

FR

FLSLSR

SW

SBR

C

SLIN1

FRIN1

CIN1

SWIN1

SBLIN1

SBRIN1

FLIN1

SRIN1

3

1

4

2

567

10

8

11

12

9

15

13

14

563

4

7

2

1

3

2

1

CN105

C166

C165

R158

R161

CN109

C140

C139

R140

R139

L112

C112

R324

R112

C118

R156

C111

L111

C114

R157

R326

R323

C117

R111

R114

C192

C138

C113

R325

C191

R113

C137

R132

C108

R320

R108

R319

C107

R107

C188

C132

C187

R131

C131

C179

C110

R110

R328

C109

R327

R134

C190

R133

C134

C189

R109

L104

C104

R154

C103

C133

R316

R104

C1041

C126

R315

C1031

L103

R155

C199

C106

R318

R106

R103

C125

R128

C128

C186

C105

R317

R105

C180

R116

C185

R127

C127

R122

C122

R159

R162

R136

C136

R135

C135

R138

R180

R137

R149

R181

R182

R396

C155

C147

R126

R183

R125

IC108

C130

C129

C152

R152

C148

R151

C153

C154

C149

C150

R148

R147

C197C198

R115

R130

C181C182

R121

C121

R129

D332

D312

R312

C332

C334

D331

R311

C331

C333

R142 R141

D311

C151

GNDA

9604S-07C

GNDA

1/50

STBY

SBRO

SBLO

GDAC

10/50

STBY

CH *1

GNDA1

GNDA0

2.2K

CH

STBY

22p

STBY

CH

*1

STBY

2.2K

22p

10/50

CH

330

10/50

CH CH

*1 *1

STBY

330

*1

CH

*1

CH

10/50

CH

*1

330

STBY

*1

CH

STBY

GND

330

10/50

CH CH

*1*1

10/50

0.01

YB

330

CH

*1

STBY

CH

*1

330

10/50

CH

*1

GNDA

10/50

CH

*1

STBY

*1

STBY

*1

2.2K

GNDA

10/50

CH

STBY

22p

CH

STBY

CH

22p

GND

STBY

330

0.01

CH

*1

STBY

2.2K GNDA

10/50

YB

10/50

STBY

CH

*1

GNDA

CH

*1

STBY

330

GND

0.01

CH

*1

STBY

10/50

GNDA

STBY

330

STBY

YB

10/50

STBY

GNDA

10/50

STBY

GNDA

STBY

GNDA

STBY

0

DSPOL

GNDA

STBY

GNDA

STBY

GNDA

100k

0

STBY

GNDA

0

STBY

BD3474KS2

STBY

47/50

0.01

YB

0.022

YB

STBY

0

GNDA

STBY

V-12

STBY

0.022

0.047

YB

STBY

0.15

0.047

0.15YB

YB

1K

YB

1K

YB

CH

*1

CH

*1

STBY

CHCH

*1

GNDA

STBY

330

10/50

UDZS6R8(B)

1SS355

V-7

100/1W

0.01

100/10

UDZS6R8(B)

100/1W

YB

GNDA

0.01

YB

100/10

TR

TL

STBY

GNDA

1SS355

STBY

V+12

V+7

0.01

*4

CN125

TO POWER PACK ASSY

RCMUT/OVF

GNDA(DAG)

TO 5.1CH INPUT ASSY

GNDA(DAG)

SW

AG

C

SL

SR

AG

FLO

VCOMG

FRO

LIN

RIN

CO

SWO

SLO

SRO

XKP3090

VIDEO R

VIDEO L

GNDA

FRONT R

FRONT L

GNDA

REC

R

(R)

L

GNDGND

MD

R

(CHASSIS)

DVR/VCR

(L)

(R)

XKB3067-

CN142

L

PLAY

(L)

(CHASSIS)

R

TV/SAT

L

(R)

L

DVD/LD

R

(R)

REC

(CHASSIS)

R

CD-R/TAPE

L

(R)

PLAY

L

R

(R)

63

62

61

66

65

64

SW

SR

SL

C

69

68

SBLIN

SBRIN

67

60

59

58

57

56

55

MICOUT

SIRIUS L

SIRIUS R

TL

TR

AUX(L)

54

53

52

51

50

49

48

AUX(R)

VIDEO L

DVD/LD(L)

CDR(L)

CDR(R)

VIDEO R

CDRREC(L)

CDRREC(R)

727170

VCRREC(L)

VCRREC(R)

75

74

73

7877768079

2

1

4

3

6

5

8

7

AVEE

10

9

DATA

CLOCK

13 12

11

AVCC

DGND

(R)

(L)

47

46

45

43 44

42

VCR(L)

VCR(R)

TV(L)

TV(R)

DVD/LD(R)

CD(R) CD(L)

41

3940363738

333435

RIN

(R)

15

14

17

16

19

18

293031

32

262728

232425

LIN

20

21

22

(CHASSIS)

CD

L

STBY

(R)

FRIN1

SLIN1

SRIN1

FLIN1

SBRIN1

CIN1

SWIN1

SBLIN1

A 1/3

CN815

C 2/2

CN307

F

971

L

A 3/3

(FL)

(SL)

(SBL)

(SW)

(C)

(SBL)

(L)

(FL)

(SL)

(C)

(SW)

(SBL)

(FL)

(SL)

(L)

XKB3055

CN108

52147-0310

D20PYY0323E

TO FRONT AUDIO ASSY

J30

2 3 4

10. SCHEMATIC DIAGRAM

10.1 MAIN ASSY (1/3)

A

B

C

D

E

F

38

VSX-418-K

1

2 3 4

5

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

SWIN1

SBL

FR

SBRIN1

SBLIN1

FRIN1

FLIN1

CIN1

SR

MP

SLIN1

SRIN1

8

2

3

4

1

2

8

3

4

1

8

6

5

4

7

8

2

1

3

4

6

8

5

4

7

6

8

5

7

4

8

2

1

3

4

6

8

7

5

4

R270

R262

C264

C262 R264 R266

C266

R272 R274

R268

R276

C278

C270

R278

IC104

C268

R289

C297

R295

C281

R281R282

C282

C283

C285

R279

R283R285R287

IC106

R293

R291

C289

R260

R297

C284

C286

C287

R290

R292

R294

R296

C292

C298

R284R286R288

IC106

C290

R259

C288

R298

C291

R202

C202

C141

R201

C204

C206

R210

R212 R214

C210

C218

R216

R204 R206 R208

IC105

C208

R240

C217

C203

C205

R209

R211 R213

C209

R215

R146

C201

C145

C146

R145

R261

C261

R242

R205 R207R203

IC105

R239

C207

R269

C263

C265

R263 R265 R267

R271

R273

C269

R275

C277

C272

R277

C271

IC104

C244

C246

C267

R236

R250

R252

R254

R256

C258

D107

D105

D103

C242

R241

C241

R244 R246 R248

IC103

C250

R235

C248

R258

C243

C245

R249

R251 R253

C249

R255

C257

C252

R257

C251

R243

R245 R247

IC103

C247

R232

GDAC

1.2K

47K

330p

TS

YB

2.2/50

3.9K 4.7K

220P

2.7K

270

YB

12K

STBY

GDAC

NJM4565MD

100p

STBY

YB

STBY

STBY STBY STBY

GDAC

STBY

V-12

STBY

V-12

V+12

(SWOUT)

TS

2.2/50

(SBL)

(COUT)

(FLOUT)

(SLOUT)

(SROUT)

(FROUT)

47K

0.1

GNDD

TS

2.2/50

GDAC

47K

STBY

330p

STBY 3.9KCH3.9K

3.9K

STBY

3.3K

STBY

YB

0.01

NJM4565MD

GDAC

STBY

330p

YB

0.01

CH

V+12

STBY

330p

CH

STBY 3.9K 3.9K

3.9K

3.3K

STBY

CH

100p

CH

100p

1K

2.2/50 TS

VLDT

VLCK

GDAC

NJM4565MD

330p

STBY

330p

3.3K

STBY

1.8K

CH

V-12

47K

STBY

CH

STBY 3.3K 3.3K

NJM4565MD

STBY

0.01 YB

STBY

0.01 YB

GDAC

47K

STBY

330p

3.3K

STBY

1.8K

CH

V+12

STBY

DAN217U

GDAC

GNDA

GNDU

GNDA

DAN217U

GDAC

GNDU

TS

2.2/50

TS

2.2/50

STBY 3.3K

CH

3.3K

NJM4565MD

GDAC

STBY

330p

STBY

V-12

CH

STBY

330p

47K

CH

STBY

3.3K 3.3K

3.3K

1.8K

STBY

0.01

YB

STBY

0.01

NJM4565MD

STBY

330p CH

V+12

YB

(2/2)

STBY

(1/2)

(2/2)

(FR)

(1/2)

MAIN ASSY(1/3)

(SBL)

VEF1040-A

Low Pass Filter

(2/2)

(SR)

(1/2)

For Wire Styling

: AUDIO SIGNAL FLOW

( )

101

CKSRYB****50-T

(SQ):CKSQ.CCSQ

RESISTOR: RS1/16S***J-T, RS1/10S***J-T

NOTES: NO INDICATED PARTS IS....

CHEMICAL CAPACITOR: CEAT***M**-T,-TS

CERAMIC CAPACITOR: CCSRCH****50-T

(L)

: Audio Signal Route (L ch)

(M)

: Audio Signal Route (Mic ch)

(FL)

: Audio Signal Route (Front L ch)

(SL)

: Audio Signal Route (Surround L ch)

(C)

: Audio Signal Route (Center ch)

(SBL)

: Audio Signal Route (Surround Back L ch)

(SW)

: Audio Signal Route (SubWoofer ch)

MAIN ASSY (XWK3356)

A 1/3

A

1/3

A 2/3

(C)

(SBL)

(SW)

(SBL)

(SW)

(FL)

(C)

(SBL)

(FL)

(SL)

*1

*4

VSX-418

CN125

XKB3055

100p

6 7 8

A

5

VSX-418-K

6 7 8

B

C

D

E

F

39

1

+

-

+

-

+

-

+

-

+

R505

C385

R513

IC315

C390

C389

R504

C362

R484

R485

R507

R509

C386

R508

R515

C393

C387

R506

C384

R512

R514

IC315

C388

IC312

R550

C368

R517

R518

R516

R488

C370

R494

R498

R502

R496

C364

C366

R500

C367

Q361

R483

C361

R495

C363

R493

R497

R499

C365

R549

IC312

R472

C342

R482

IC311

R474 R476

C348

C346

R478

C347

R481

C343

R475 R473

C344

R477

R479

C345

C341

R322

R452

IC311

R471

C328

R480

R308

R307

R306

R305

R304

R303

C322

R462

IC310

R454 R456

R458

C324

C326

C327

R461

C321

R455

C323

R453

R457

C325

R321

R467

IC310

R460 R459

STBY

(SBR)

(1/2)

SBR

(SBR)

SBL

(2/2)

(SW)

SW

(1/2)

C

(SR)

(1/2)

SR

SL

(2/2)

(1/2)

(SR)

(FR)

FR

FL

(2/2)

PRE-AMP

STBY STBY

STBY

TS

10/50

100k

2SC5938A(AB)

(SBROUT)

(SBLOUT)

SWPR

STBY

*3

STBY

*3

STBY

0

TS

STBY

4.7K

STBY

4.7/50

STBY

22/50

0

STBY

0

STBY

10k 10k

GNDA

STBY

22/50

STBY

TS

22/50

STBY

0

STBY

0

STBY

10k

(SROUT)

(COUT)

(SWOUT)

100

(FROUT)

(SLOUT)

(FLOUT)

100

STBY

STBY STBY

22/50

TS

STBY

*1

STBY

TS

22/50

STBY

0

10k 10k

V+12

A 2/3

A 1/3

A 3/3

(FL)

(SL)

(C)

(SBL)

(SW)

10.2 MAIN ASSY (2/3)

A

2 3 4

B

C

D

E

F

40

VSX-418-K

1

2 3 4

5

SBL

SBR

OLDT

XPROTECT

DCDT

6_OHM

AMUTE

F-DRIVE

CONTROL

+

-

+

-

321

312

4

3

2

1

7

6

5

8

13

11

12

9

10

16

14

15

17

R300

C300

D255

R280

D253

R443

R463

Q255

R464

Q256

R447

Q252

Q254

Q259

R437

Q248

Q249

C256

C253

R436

IC251

R430

IC251

D251

R438

R439

R440

C254

R442

C255

R448

D254

R441

Q253

R446

R445

Q257

R449

R551

R432

R435 R434

R431

R433

R444

C320

C392

Q250

CN251

CN110

CN252

FAN CONTROL

(2/2)

SL

SR

(1/2)

FR

FL

C

(SR)

(FR)

MAIN ASSY(2/3)

XDX3064

J22

TO TRANS3 ASSY

+24V

GNDU

FAN+

FAN STOP

FAN-

TO FAN

MOTOR

F-DRIVE DCDT

XPROTECT OLDT

NECK

TO POWER PACK ASSY

AMUTE

(SB)

TO MAIN ASSY

( TO MAIN ASSY 3/3 )

: AUDIO SIGNAL FLOW

JA:CEJA

Ratings: Capacity(μF)/Voltage(V) unless otherwise noted. Rated Voltage: 50V expect for electrolytic capacitors.

1.RESISTORS

Tolerance: (J) 5% unless otherwise noted.

Unit: p-pF or μF unless otherwise noted.

Rated power: 1/16W unless otherwise noted.

Unit: k-kΩ, M-MΩ or Ω unless otherwise noted.

NOTE

2.CAPACITORS

+

-

GNDU

V-12

STBY

V+5U

*5

470

*5

2SD2704K

4.7K

(QR)

2SD1858X

RT1P241M

(QR)

2SC4081

10K

RT1N241M

0.01

NJM4565MD

68K

39K

100K

NJM4565MD

10K

(QR)

2SC4081

10K

100K

100/25

0.01

NP

STBY

100K

UDZS5R1(B)

8.2k

2.2K

DAN217U

STBY

RT1N241M

22k

2SA1576A

(QR)

8.2K

100K

68K

100K

YB

1000p

STBY

GNDA

GNDU

GNDCH

52147-0310

XKP3059

B3B-EH

6 OHM

GNDU

FL

GNDA

SR

GNDA

FR

C

GNDA

SL

GNDA

A 2/3

CN704

FAN

C 1/2

891

G

A 3/3

(FL)

: Audio Signal Route (Front L ch)

(SL)

: Audio Signal Route (Surround L ch)

(C)

: Audio Signal Route (Center ch)

(SBL)

: Audio Signal Route (Surround Back L ch)

(SW)

: Audio Signal Route (SubWoofer ch)

(FL)

(SL)

(C)

(SBL)

MAIN ASSY (XWK3356)

A

2/3

Q255 R463

R464

*5

D253

R280

D255

RT1N241M

0

UDZS27(B)

0

-

MYSXJ5

6 7 8

A

B

C

D

E

5

6 7 8

VSX-418-K

F

41

Pioneer VSX-418 Schematic