Kenwood KAC-6404 Service Manual Download Page 17

AUDIO UNIT X09-8722-70/2-71 (J76-0469-01)

IC1

IC2

IC3

IC4

IC5

IC7

IC8

IC9

IC10

IC13

Q119

Q120

Q219

Q220

Q121

Q122

Q221

Q222

Q604

Q607

P1

S1

S2

Q107

Q108

Q109

Q110

Q111

Q112

Q117

Q118

Q207

Q208

Q209

Q210

Q211

Q212

Q217

Q218

Q3

D4

Q123

Q124

Q223

Q224

Q4

D5

Q125

Q126

Q225

Q226

CN1

CN2

J9

Q1

Q2

Q5

Q6

J1

J2

D33

D1

D34

D36

D35

D37

Q610

Q7

Q8

D2

D3

D8

D604

D609

D610

D614

D616

Q9

Q10

Q101

Q102

Q127

Q128

Q131

Q132

Q201

Q202

Q227

Q228

Q231

Q232

Q602

Q605

Q606

Q611

Q612

Q613

D32

D6

D7

D9

D10

D11

D101

D102

D103

D104

D105

D106

D107

D108

D109

D110

D111

D201

D202

D203

D204

D205

D206

D207

D208

D209

D210

D211

D601

D602

D603

D605

D606

D607

D608

D613

Q11

Q12

Q103

Q104

Q105

Q106

Q115

Q116

Q203

Q204

Q205

Q206

Q215

Q216

Q601

Q603

Q614

Q615

Q616

Q617

Q618

D615

Q213

Q113

Q214

Q114

1

2

9

10

1

1

Bch

Ach

GAIN

GAIN

LPF

FREQ

OFF

HPF

OFF

LPF

FAN

FAN

12

12

W166

W167

W151

C2

C3

C22

C27

C616

C606

C18

C1

C4

C5

C207

C208

C407

C408

C601

C602

C603

C604

C611

C612

R100

C13

C16

C103

C104

C111

C112

C113

C114

C115

C116

C155

C156

C159

C160

C201

C202

C303

C304

C311

C312

C313

C314

C315

C316

C327

C328

C355

C356

C401

C402

R101

R102

R253

R254

R255

R256

R301

R302

R453

R454

R455

R456

R616

W152

W165

W153

W174

W162

W80

W141

W142

W144

W143

W189

W140

W137

W158

W134

W130

W136

W139

W135

W132

W133

W160

W183

W116
W117

W129

W127

W88

W100

W114

W89

W125

W172

W176

W124

W97

W149

W161

W163

W98

W86

W90

W131

W123

W179

W155

W177

W84

W154

W178

W147

W150

W92

W85

W87

W69

W74

W111

W99

W103

W83

W82

W41

W77

W42

W23

W102

W128

W156

W138

W45

W8

W1

W10

W6

W5

W7

W9

W11

W51

W4

W29

W28

W118

W60

W3

W185

W14

W17

W184

W39

W38

W13

W173

W119

W181

W182

W2

W30

W35

W32

W43

W12

W53

W31

W34

W192

W164

W21

W20

W37

W36

W46

W50

W26

W22

W27

W24

W25

W57

W48

W188

W190

W191

W115

W79

W76

W52

W66

W65

W108

W81

W15

W93

W58

W121

W54

W180

W175

W40

W68

W62

W120

W159

W105

W148

W146

W18

W96

W113

W94

W126

W106

W107

W19

W122

W110

W55

W73

W112

W145

W63

W64

W109

W95

W61

W16

W70

W67

W33

W71

W47

W44

W78

W56

W59

W72

W75

W49

C28

L4

W101

W157

C6

C7

W199

W193

W194

W200

W195

W197

W91

W196

L5

W169

W104

W201

W202

W203

W168

W171

W170

W198

W204

W186

C225

C608

W187

AL

BL

BR

AR

C29

C10

C11

L2

VR1

VR2

VR3

L1

L3

C25

C26

BE

BE

BE

BE

B

E

BE

BE

BE

BE

BE

B

E

B

E

B

E

B

E

EB

EB

EB

EB

EB

EB

EB

E

E

B

B

E

B

E

B

8

9

8

16

5

4

8

1

1

1

W540

W531

W539

W501

W500

C20

C23

C31

C33

C35

C42

C44

R31

R207

R208

R407

R408

R5

R223

R224

R225

R226

R423

R424

R425

R426

R608

R609

R619

R668

C21

C24

C32

C34

C36

C41

C43

R659

R6

R261

R629

R666

R669

R602

R618

R625

C15

C19

C117

C118

C203

C204

C317

C318

C351

C403

C404

C609

C610

C617

W597

R10

R11

R16

R17

R19

R26

R27

R35

R36

R39

R115

R116

R153

R155

R156

R167

R168

R179

R180

R181

R182

R203

R204

R205

R206

R315

R316

R319

R320

R327

R328

R335

R336

R355

R356

R367

R373

R403

R404

R405

R406

R606

R613

R614

R635

R636

R661

R662

R663

R664

R670

TH3

C101

C102

C301

C302

R103

R104

R107

R108

R113

R114

R303

R304

R307

R308

R313

R314

C14

C105

C106

C107

C108

C109

C110

C128

C150

C151

C152

C153

C154

C217

C218

C219

C220

C221

C222

C259

C260

C305

C306

C307

C308

C309

C310

C352

C353

C417

C418

C419

C420

C421

C422

C459

C460

C607

C227

C228

C425

C426

W598

R3

R4

R12

S

D G

S

D G

S

D G

S

D G

R13

R14

R15

R18

R20

R21

R22

R24

R25

R28

R32

R33

R34

R37

R38

R105

R106

R109

R110

R111

R112

R117

R118

R121

R122

R123

R124

R125

R126

R151

R152

R154

R165

R166

R201

R202

R209

R210

R211

R212

R213

R214

R215

R216

R217

R218

R219

R220

R221

R222

R229

R230

R231

R232

R233

R234

R235

R236

R237

R238

R239

R240

R241

R242

R243

R244

R245

R246

R247

R248

R249

R250

R251

R252

R259

R260

R265

R266

R267

R268

R269

R270

R305

R306

R309

R310

R311

R312

R317

R318

R321

R322

R323

R324

R325

R326

R357

R358

R359

R360

R361

R362

R374

R379

R380

R401

R402

R409

R410

R411

R412

R413

R414

R415

R416

R417

R418

R419

R420

R421

R422

R429

R430

R431

R432

R433

R434

R435

R436

R437

R438

R439

R440

R441

R442

R443

R444

R445

R446

R447

R448

R449

R450

R451

R452

R459

R460

R465

R466

R467

R468

R469

R470

R601

R603

R604 R605

R607

R610

R611

R612

R615

R617

R620

R621

R622

R623

R624

R626

R631

R632

R633

R634

R637

R660

R665

R667

R671

W537

W541

W592

W591

W585

W584

W581

W580

W583

W523

W579

W578

W576

W577

W572

W571

W575

W573

W590

W508

W589

W588

W570

W562

W569

W574

W554

W568

W551

W542

W558

W507

W509

W521

W526

W586

W504

W502

W514

W529

W517

W512

W511

W503

W560

W505

W513

W543

W506

W545

W547

W557

W533

W520

W593

W510

W516

W519

W567

W538

W535

W528

W525

W527

W587

W561

W555

W563

W553

W530

W534

W548

W536

W549

W524

W515

W582

W518

W522

W546

W564

C605

W552

W532

W565

W544

W556

W559

W550

R271

W594

W596

C424

C224

C17

C411

R458

C223

R258

R427

C209

R472

C409

W595

R272

R227

C413

C406

C211

C410

C229

C214

C206

C205

C427

C405

C412

C212

C213

C414

C230

C428

R471

W599

W600

R228

R428

C216

C416

C215

C415

C100

C210

R627

R2

R1

R29

R30

W566

C37

C30

R23

C423

C9

C8

C12

R9

R8

R7

R457

R25

1

4

8

5

5

4

8

5

1

4

8

5

1

4

8

5

1

4

8

5

1

4

B

E

B

E

8

5

1

4

8

5

1

4

B

E

B E

B E

B

E

B

B

E

B

E

B

E

B

E

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

B

E

E

B E

B E

B E

B E

B

E

B E

B

E

BE

B

E

BE

BE

B E

B E

B E B E

B

E

B

E

B E

B E

B

E

B

E

B

E

B

E

B E

E

B

E

B

E

B

E

B

BE

B

E

B E

B

E

B

E

B E

B

E

BE

B

E

B E

KAC-6404/7404/M645/M845

PC BOARD (FOIL SIDE VIEW)

TP57

TP358

TP60

TP359

TP62

TP46

TP48

TP50

TP52

TP368

TP24

TP121

TP23

TP29

TP30

TP31

TP32

TP37

TP38

TP39

TP40

TP41

TP42

TP43

TP44

TP45

TP47

TP49

TP51

TP53

TP54

TP55

TP56

TP58

TP59

TP61

TP63

TP64

TP65

TP66

TP67

TP69

TP71

TP72

TP73

TP74

TP76

TP77

TP78

TP79

TP80

TP81

TP82

TP85

TP86

TP87

TP120

TP122

TP242

TP246

TP251

TP253

TP255

TP356

TP360

TP362

TP364

TP365

TP366

TP367

TP369

TP370

TP371

TP372

TP373

TP374

TP375

TP376

TP377

TP378

TP379

TP380

TP381

TP391

TP392

TP393

TP394

TP395

TP396

TP397

TP398

TP399

TP400

TP401

TP25

Summary of Contents for KAC-6404

Page 1: ... RIGHT BATT LINE IN LPF FREQUENCY Hz INPUT SENSITIVITY V MIN MAX OFF LPF B ch FILTER SPEAKER LEVEL INPUT OFF LPF A ch FILTER A ch MIN MAX B ch B ch 4 3 2 Channel MAXIMUM Power Amplifier POWER 4 3 2 Channel MAXIMUM Power Amplifier POWER 4 3 2 Channel Power Amplifier MAXIMUM POWER 4 3 2 Channel MAXIMUM Power Amplifier POWER 4 3 2 Channel MAXIMUM Power Amplifier POWER FUSE 25A KAC 7404 E type KAC 640...

Page 2: ...ER AMP AR SP OU TPU T MUTE ATT POWER AMP BL INV MUTE ATT POWER AMP BR BATT GND P CON THERMAL DET DC OFFSET DET POWER ON OFF DC DC CON FAN AVR FAN LC FILTER 15V AVR OVERLOAD B AMP AMP AMP L P F ON OFF DET IC1 2 IC1 2 IC3 4 IC3 4 IC9 IC9 IC8 IC8 IC7 IC7 IC5 Q127 131 Q128 132 Q227 231 Q228 232 Q101 Q102 Q201 Q202 Q103 125 Q104 126 Q203 225 Q204 226 TH3 IC10 Q611 614 Q610 Q3 4 D4 5 IC13 Q1 2 5 12 Q604...

Page 3: ...03 206 Differential first stage amplifier Q107 110 207 210 Differential second stage amplifier Q111 112 211 212 Differential second stage current mirror Q113 114 213 214 Idling temperature detection Q115 118 215 218 Current limiter Q119 122 219 222 Power amplifier driver Q123 126 223 226 Power amplifier final Q127 128 131 132 227 228 231 232 Protector ATT Q601 Shock noise prevention circuit contro...

Page 4: ...G R13 R14 R15 R18 R20 R21 R22 R24 R25 R28 R230 R232 R234 R236 R238 R240 R242 R244 R246 R248 R250 R252 R429 R433 R435 R438 R439 R442 R44 R445 R448 R449 R452 R601 R603 R604 R605 R607 R610 R611 R612 R615 R624 R626 R631 R660 R667 R671 W592 W591 W585 W584 W581 W580 W583 W579 W576 W577 W572 W57 W575 W573 W590 W589 W588 W574 W586 W587 W582 W596 C424 C224 R458 C223 R258 R272 W600 R627 R23 C423 C9 C8 C12 R...

Page 5: ...459 C460 C607 C227 C228 C425 C426 W598 R18 R20 R21 R22 R25 R28 R32 R33 R34 R37 R38 R105 R106 R109 R110 R111 R112 R117 R118 R121 R122 R123 R124 R125 R126 R151 R152 R154 R165 R166 R201 R202 R209 R210 R211 R212 R213 R214 R215 R216 R217 R218 R219 R220 R221 R222 R229 R231 R233 R235 R237 R239 R241 R243 R245 R247 R249 R251 R259 R260 R265 R266 R267 R268 R269 R270 R305 R306 R309 R310 R311 R312 R317 R318 R3...

Page 6: ... 5 8 7 R321 100K 2 2K R323 R325 100K 1 2 R322 2 2K R326 100K 100K R324 10u50 C313 C315 10u50 C316 10u50 10u50 C314 R121 2 2K R122 2 2K R124 100K R126 100K R125 100K R123 100K C114 10u50 C116 10u50 C115 10u50 C113 10u50 R319 47K C312 47u25 R318 10K C310 100P C34 0 01 C33 0 01 C309 100P R320 47K 6 R317 10K 4 8 5 7 C311 47u25 R38 10 VR2 10K 10 R37 R15 R152 10K VR1 10K 10 C108 15P R101 1K R102 1K 2 4 ...

Page 7: ...8 C155 0 01 0 01 6 5 7 8 4 R181 47K 10u50 C159 10u50 R180 47K R202 3 3K R218 13K R179 47K 3 3K R217 13K R201 6 5 7 1 2W 47u25 10u50 C3 47u25 C5 C2 C4 10u50 C28 2200u35 C29 2200u35 R5 1 2W L2 3300u16 3300u16 C11 C10 10 R9 1 2W L5 2200u16 2200u16 C25 C26 R15 47 3300u50 C7 3300u50 C6 TH3 R4 22 R13 22 C19 0 1 R36 2K R32 200 C21 0 01 C20 0 01 3 2 1 4 470K 8 R1 100 R33 R2 C15 0 1 10u50 C18 R11 4 7K R10 ...

Page 8: ...R617 TP381 R632 47K C601 C612 10u50 33u35 R603 10 R219 150 R220 R221 R206 47K C204 470P R266 10K R210 4700P R216 R214 100 C206 R212 1 5K 1 5K R265 10K R209 C203 470P R205 47K C201 10u50 R211 1 5K 1 5K C205 4700P R213 100 R215 R223 R207 15K R252 C230 100P C216 R228 47K C214 100P 100 C222 1000P R242 1K R238 100 100 C227 3P C215 5P R227 47K R231 560 C217 0 01 R241 1K R239 1K R256 0 1 2W R248 4 7 R631...

Page 9: ...L1 L4 5uH GND 10 10u50 BR AR 1 2 BL AR BR AL 3 4 5 6 AL BL P CON 7 8 9 C1 40A 25A FUSE BATT 11 TP392 TP393 TP394 TP395 6 8K R665 22 R661 22 R662 10K R663 10K R664 R666 6 8K R667 33K R669 TP391 TP53 TP52 TP51 TP48 TP49 TP46 TP50 TP368 TP45 TP47 10 1 2W 10 1 2W 10 1 2W TP55 TP54 TP56 R605 33K TP62 R619 R608 10u50 C603 3 3K R614 3 9K R616 R601 10K TP379 R668 BU BU SW12V CAUTION For continued safety r...

Page 10: ... 2608 43 N89 3006 43 N89 3008 48 N89 3014 48 N09 6447 05 N07 0003 08 N09 4214 08 X09 872 J1 J2 J9 VR3 VR2 VR1 F1 Bundled to the transistor Ax6 Ax4 Ax2 Yx2 Fx2 Zx4 Zx5 Gx2 Ax2 Ex3 Cx2 Cx2 Fx2 Ex2 Ex2 Ex2 Ex2 E D D E E E E E E E B D D E A A 708 712 E 1 16 5 4 7 15 717 702 713 709 3 10 713 Bx3 709 10 ONLY USED KAC 7404 M845 ONLY USED KAC 7404 M845 ONLY USED KAC 7404 M845 ONLY USED KAC 7404 M845 ONLY ...

Page 11: ... C 0 10UF K C20 21 CK73GB1H103K CHIP C 0 010UF K C22 CD04BJ1H100M ELECTRO 10UF 50WV C23 24 CK73GB1H103K CHIP C 0 010UF K C25 26 CD04AZ1C222M ELECTRO 2200UF 16WV KE1M2 C27 CD04BJ1H100M ELECTRO 10UF 50WV C28 29 CD04AZ1V222M ELECTRO 2200UF 35WV KE1M2 C30 37 CK73GB1H103K CHIP C 0 010UF K C41 44 CK73GB1H103K CHIP C 0 010UF K C100 102 CK73GB1H102K CHIP C 1000PF K C103 104 CD04BJ1H100M ELECTRO 10UF 50WV ...

Page 12: ...22J CHIP R 2 2K J 1 10W R36 RK73GB2A202J CHIP R 2 0K J 1 10W R37 RK73GB2A474J CHIP R 470K J 1 10W R38 RK73GB2A562J CHIP R 5 6K J 1 10W R39 RK73GB2A222J CHIP R 2 2K J 1 10W R100 102 RD14BB2C102J RD 1 0K J 1 6W R103 104 RK73GB2A103J CHIP R 10K J 1 10W R105 106 RK73GB2A472J CHIP R 4 7K J 1 10W R107 108 RK73GB2A103J CHIP R 10K J 1 10W R109 110 RK73GB2A123J CHIP R 12K J 1 10W R111 118 RK73GH2A103D CHIP...

Page 13: ...B2A333J CHIP R 33K J 1 10W R610 RK73GB2A303J CHIP R 30K J 1 10W R611 612 RK73GB2A362J CHIP R 3 6K J 1 10W R613 RK73GB2A152J CHIP R 1 5K J 1 10W R614 RK73GB2A332J CHIP R 3 3K J 1 10W R615 RK73GB2A392J CHIP R 3 9K J 1 10W R616 RD14BB2C392J RD 3 9K J 1 6W R617 RK73GB2A123J CHIP R 12K J 1 10W R618 RK73GB2A222J CHIP R 2 2K J 1 10W R619 RK73EB2E472J CHIP R 4 7K J 1 4W KE1M2 R619 RK73EB2E562J CHIP R 5 6K...

Page 14: ...IODE D601 603 1SS355 DIODE D604 UDZS10B ZENER DIODE D605 1SS355 DIODE D606 UDZS15B ZENER DIODE D607 UDZS6 8B ZENER DIODE D608 1SS355 DIODE D609 UDZS12B ZENER DIODE EM1 D613 1SS355 DIODE D614 UDZS10B ZENER DIODE D615 616 1SS355 DIODE EM1 D616 1SS355 DIODE KE1M2 IC1 5 BA4560RF ANALOGUE IC IC7 10 BA4560RF ANALOGUE IC IC13 TL494IDR ANALOGUE IC Q1 2 STP60NF06FP FET Q3 2SD2012 F TRANSISTOR Q4 2SB1375 F ...

Page 15: ...n Blue Violet ppm C 0 80 150 220 330 470 750 Tolerance More than 10pF Code C D G J K M X Z P No code 0 25 0 5 2 5 10 20 40 80 100 More than 10μF 10 50 20 20 0 Less than 4 7μF 10 75 Voltage rating 2nd word A B C D E F G H J K V 1st word 0 1 0 1 25 1 6 2 0 2 5 3 15 4 0 5 0 6 3 8 0 1 10 12 5 16 20 25 31 5 40 50 63 80 35 2 100 125 160 200 250 315 400 500 630 800 3 1000 1250 1600 2000 2500 2150 4000 50...

Page 16: ...Bridged 4 Ω 1 kHz 1 THD KAC 7404 M845 180 W 2 KAC 6404 M645 130 W 2 INSTALLATION SPECIFICATIONS Frequency Response 0 3 dB 5 Hz 50 kHz Sensitivity rated output 0 2 V 5 0 V Signal to Noise Ratio 94 dB Input Impedance 10 kΩ Low Pass Filter Frequency 12 dB oct 50 200 Hz variable High Pass Filter Frequency 12 dB oct 80 Hz General Operating Voltage 14 4 V 11 16 V allowable Current Consumption KAC 7404 M...

Page 17: ...36 R355 R356 R367 R373 R403 R404 R405 R406 R606 R613 R614 R635 R636 R661 R662 R663 R664 R670 TH3 C101 C102 C301 C302 R103 R104 R107 R108 R113 R114 R303 R304 R307 R308 R313 R314 C14 C105 C106 C107 C108 C109 C110 C128 C150 C151 C152 C153 C154 C217 C218 C219 C220 C221 C222 C259 C260 C305 C306 C307 C308 C309 C310 C352 C353 C417 C418 C419 C420 C421 C422 C459 C460 C607 C227 C228 C425 C426 W598 R3 R4 R12...

Page 18: ...1 R20 330K R21 C14 0 01 10K R25 R26 R27 22K 4 7K 1K R22 3 3K C16 47u25 C422 1000P 2W R442 1K C418 0 01 R432 560 R416 R414 C402 10u50 470P R430 1 8K C410 R434 56 5P C416 R428 47K R472 82 100 R436 C420 1000P R440 1K 2W 150 R407 15K R467 10K R468 10K R410 R466 10K R406 47K C404 470P R409 R420 R412 1 5K 1 5K C406 4700P 100 C412 100P R411 1 5K 1 5K R419 R465 10K C403 470P R405 47K TP362 C401 10u50 C405...

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