Kenwood KAC-PS521 Service Manual Download Page 10

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KAC-PS521/X521

PC BOARD (FOIL SIDE VIEW)

B E

B E B E

B E

B E B E

B E

C98

R113

R114

R174

R185

R186

R203

R348

R349

C402

R402

R424

R998

R85

R350

R117

R118

R184

R442

R77

R80

R86

R241

R341

R52

R74

C71

C307

R194

R323

R328

R329

R342

R344

R401

R427

R428

R429

R431

R432

R433

TH3

TH4

C142

C343

C353

C354

C406

C451

C452

C453

C23

R15

R16

R23

R76

R83

R84

R175

R177

R265

R262

R271

R268

R266

R263

R272

R269

R178

R179

R180

R181

R188

R196

R306

R313

R324

R352

R423

R434

W602

R477

R478

R479

R480

C11

C12

C13

C14

C21

C105

C106

C125

C127

R10

R11

R12

R13

R14

R17

R18

R21

R22

R79

R81

R82

R101

R102

R103
R104

R249

R275

R277

R273

R278

R276

R274

R247
R248

R245

R246

R250

R107

R108

R109

R110

R111

R112

R115

R116

R139

R141

R143

R147

R176

R182

R183

R187

R189

R190

R191

R192

R193

R195

R303

R304

R308

R309

R311

R315

R317

R347

R351

R353

R354

R355

R356

R357

R421

R422

R425

R426

R430

R443

R444

R450

TP2

TP21

TP1

TP3

TP5

TP11

TP13

TP7

TP9

TP4
TP6
TP8

TP10

TP12

TP14
TP16

TP18
TP20
TP22

R451
R452
R453

R454

R455

R458

R459

R460

R418

R419

W556

W562

W547

W563

W612

W603

W543

R305

C24

W551

W558

W542

W534

W555

W560

W570

W557

R264

R261

R270

R267

W548

W553

W531

W526

W522

W545

W525

W540

W538

W529

W527

W611

C460

W549

W521

W530

C461

R99

C405

W523

W532

W541

R98

W537

R97

W564

W561

W565

R100

C306

W554

W536

W605

W518

W539

C311

W604

W524

W519

W544

W550

W528

R360

W520

C303

R327

W573

TP38

TP37 TP36 TP35 TP34 TP33 TP32 TP31

TP40

TP39

W609

W614
W615

R420

W569

W606

C304

W607

W608

C302

C454

W610

C99

C100

W613

R96

R95

C97

W571

C404

W572

W617

W552

W616

W566

LCH

RCH

OUT

W253

W261

TP19

TP17

TP15

C18

TP24

TP27

TP26

TP23

TP25

C138

W92

C401

C109

C110

C70

C17

C19

C69

C91

C103

C104

C111

C112

C137

C139

C140

C145

C146

C301

C349

C350

C351

C352

C358

C403

R105

R106

W90

W80

W89

C15

C16

C101

C102

C107

C108

C115

C116

C117

C118

C119

C120

C121

C122

C123

C124

C129

C130

C131

C132

C133

C135

C141

R119

R120

R121

R122

R123

R124

R125

R126

R127

R128

R129

R130

R131

R132

R133

R134

R135

R136

R137

R138

R145

R146

R151

R152

R153

Lch

R154

R155

R157

R158

R159

R160

R161

R163

R165

R166

R167

R168

R169

R171

R173

R201

R202

R301

R302

R318

R319

R320

R321

R322

R334

R335

R345

W404

W58

W62

W61

W60

W59

W165

W257

W254

W213

W212

W219

W78

W88

W82

W74

W161

W141

W76

W168

W145

W46

W127

W117

W137

W183

W188

W190

W176

W170

W166

W178

W223

W255

W256

W83

W67

W68

W70

W53

W227

W228

W229

W230

W124

W94

W52

W185

W208

W209

W207

W173

W152

W150

W142

W63

W151

W175

W172

W196

W129

W64

W241

W232

W128

W42

W116

W91

W111

W99

W95

W236

W133

W163

W138

W98

W104

W221

W123

W126

W130

W107

W140

W231

W156

W158

W164

W160

W143

W177

W174

W167

W153

C74

W147

W103

W119

W110

W115

W234

W131

W220

W206

W195

W189

W191

W194

W204

W205

W203

W202

W201

W93

W260

W226

W199

W192

W215

W218

W181

W258

W233

W235

W237

W193

W243

W248

W246

W244

W238

W239

W247

W252

W251

W224

W197

W214

W159

W157

W198

W216

W154

W146

W155

W171

W250

W249

W41

W210

W113

W148

W211

W149

W179

Lch

Rch

W180

W187

W162

W135

W136

W72

W112

W56

W77

W54

W71

W101

W182

W184

W186

W105

W106

W242

W57

W65

W55

W66

W73

W108

W125

W122

W118

W114

W109

W102

W85

W245

W121

W132

W84

W69

W97

W86

W75

W87

W100

W96

W79

W81

W217

W222

W43

W200

W169

W225

C76

Q349

D131

D258

D259

D260

Q97

Q351

Q354

Q357

Q69

Q352

D132

D301

D303

D312

D351

D353

D354

Q50

Q68

Q70

Q71

Q101

Q247

Q249

Q245

Q250 Q248

Q102

Q246

Q149

Q348

Q353

Q355

D55

D70

D103

D255

D256

D257

D133

D302

D304

D305

D315

D341

D342

D343

D344

D352

Q111

Q112

Q141

Q261

Q262

Q263

Q142

Q143

Q144

Q145

Q346

Q347

D317

D318

D319

D311

Q356

Q358

D108

Q66

Q147

D71

D105

D106

D107

D109

D110

D111

D112

D113

D115

D117

D127

D128

D129

D130

Q103

Q104

Q105

Q106

Q107

Q108

Q109

Q110

Q113

Q114

Q115

Q116

Q117

Q118

Q119

Q121

Q123

Q125

Q126

Q127

Q128

Q129

Q131

Q133

Q134

Q135

Q136

Q137

Q139

Q146

Q403

Q404

D54

CN10

IC1

IC10

IC6

IC7

IC5

IC8

IC3

AUDIO UNIT X09-5760-10 A/2 (J76-0013-11)

DC voltmeter

2.5mV

DC voltmeter

2.5mV

VR2

VR1

Refer to the schematic diagram for the values of resistors and capacitors.

Summary of Contents for KAC-PS521

Page 1: ... 0 1 2 3 4 5 6 7 8 9 RESET REMOTE TO H U ID NUMBER POWER IN 30 30 FUSE 30A 2 VOLT FAN CURR TEMP MENU Screw set N99 1752 05 Screw set N99 1577 15 Heat sink F01 1751 01 Accessory W01 1606 05 Cover F07 1138 12 KAC X521 F07 1139 12 KAC PS521 Screw N07 0003 08 Screw N09 4214 08 Fuse 30A F52 0015 05 ...

Page 2: ...T DC PROT PREAMPLIFIER UNIT X08 4150 10 Ref No Application Function Operation Condition Compatibility IC1 Infrasonic filter Controlled by microprocessor IC3 Tone and volume variable IC4 6dB voltage amplification IC5 HPF LPF IC6 Lch 6dB voltage amplification Rch Signal 180 reverse and 6dB voltage amplification IC7 LCD driver Controlled by microprocessor AUDIO UNIT X09 5760 10 Ref No Application Fun...

Page 3: ...ty power supply Q101 102 Mute Q103 112 A class first stage amplifier Q113 118 A class 2nd stage amplifier Q119 120 Final temperature compensation Q121 124 Amplifier current detection Q125 132 Final driver Q133 140 Final Q141 Mute control Q142 145 Amplifier limiter Q146 147 Amplifier current detection Q148 149 DC detection Q301 307 H U communication output driver Q313 H U communication output drive...

Page 4: ...control E2PROM I2C communication MICROPROCESSOR 784224YGC117 X09 IC6 Block Digram Terminal Function Pin No Pin Name I O Function Processing Operation Description 1 3 TEMP4 TEMP6 I Temperature detection 4 6 4 AVSS GND 5 L_CE O CE output to LCD driver H LCD driver CE 6 LX_REQ_S O Data transmit request to H U H OFF L ON 7 AVREF1 DA reference voltage 8 L_DATA_L I Data input from LCD driver 9 L_DATA_A ...

Page 5: ...ot used 46 COMM SW O Communication IC power switch H ON L OFF 47 50 NC O Not used 51 D PWER O D class amplifier power supply control H ON L OFF 2ch 4ch L fixed 52 DC DET I Speaker output DC voltage detection H Normal L Abnormal 53 NC O Not used 54 POWER ON O Amplifier power supply control H ON D AB class L OFF 55 5VSW O 5VSW H OFF L ON 56 MUTE1 O Amplifier section input stage mute control H OFF L ...

Page 6: ...ection for display 77 AD V I BU voltage detection for display 78 80 TEMP1 TEMP3 I Temperature detection 1 3 MICROCOMPUTER STERMINAL DESCRIPTION 2 AMP ID AMP ID is checked only ohce at the time reset is released or when the microcomputer is released from the low consump tion mode When set to AMP ID 8 9 no remote control is possible AMP ID DIP SW1 DIP SW2 DIP SW3 DIP SW4 25pin 26pin 27pin 28pin 0 Hi...

Page 7: ...int Method Align For Note Fig 1 IDEL CURRENT VR1 Lch Connect a DC voltmeter between 2 5mV After Power on PC board VR2 Rch check land A B 2 minutes X09 576 ADJUSTMENT Current detection circuit Amplify and rectify potential differences at two points in the primary side current circuit and send it to the AD port of the MPU and obtain data for displaying current value Constant current output circuit R...

Page 8: ...3 C4 C65 R8 R7 C12 R63 R64 C66 R65 C63 R39 R40 C5 R5 C64 R66 C6 R6 R3 R4 C11 C107 1 22 7 8 1 14 1 7 14 8 1 4 8 5 1 4 8 5 64 16 1 49 33 48 17 32 1 10 20 11 1 1 1 1 200Hz 50Hz 1 3 5V 200mV 1 24 50Hz 1 2 200Hz R13 R116 C105 C61 C9 C10 C15 C16 C17 C18 C19 C20 C25 C26 C31 C32 C39 C67 C68 R117 LOW PASS ST MONO OFF ON ON OFF LPF OFF INPUT SENS HPF HI PASS ANP CONT I S F 503C 503C 103A VR1 VR3 VR2 CN1 D1 ...

Page 9: ...TP56 TP59 TP60 TP61 TP62 TP63 TP64 TP65 TP66 TP67 TP68 TP69 TP70 TP71 TP72 TP73 TP74 TP75 TP76 TP78 TP88 TP89 TP90 TP91 TP92 TP93 TP94 TP98 TP99 TP100 TP101 TP102 TP103 TP104 TP105 TP106 TP107 TP108 TP109 TP110 TP111 TP112 TP113 TP114 TP115 TP116 TP117 TP118 TP119 TP120 TP121 TP122 TP123 TP124 TP125 TP126 TP127 TP128 TP129 TP130 TP132 TP180 TP181 TP182 TP189 TP186 TP188 TP185 TP184 TP187 TP192 TP1...

Page 10: ...117 C118 C119 C120 C121 C122 C123 C124 C129 C130 C131 C132 C133 C135 C141 R1 R2 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 R130 R131 R132 R133 R134 R135 R136 R137 R138 R145 R146 R151 R152 R153 Lch R154 R155 R157 R158 R159 R160 R161 R163 R165 R166 R167 R168 R169 R171 R173 R201 R202 R301 R302 R318 R319 R320 R321 R322 R334 R335 R345 W404 W58 W62 W61 W60 W59 W165 W257 W254 21 1 22 2 W213 W...

Page 11: ... S G D S G D S G D S G D S E B D306 D307 D308 D310 D313 D314 Q53 Q54 Q65 Q148 Q149 Q341 Q342 Q343 Q344 D13 D81 33 D309 Q51 Q52 Q63 Q91 Q92 Q301 Q302 Q303 Q304 Q305 Q306 Q307 Q313 Q314 Q62 Q64 Q61 D51 D52 D60 J2 Q55 Q56 Q57 Q58 Q59 Q60 D251 D68 D69 D114 D116 D118 Q81 Q120 Q122 Q124 Q130 Q132 34 Q138 Q140 P1 CN1 CN2 CN9 IC9 IC2 X09 B 2 X09 5760 10 Ref No Address IC1 6L IC2 5R IC3 6L IC5 5M IC6 5M IC...

Page 12: ...319 IC2 D54 D310 351 354 D353 D55 D312 D352 D70 2SC3478A L K Q113 116 D105 106 108 149 301 304 341 344 357 D319 H U COMMUNICATION DATA COMMUNICATION VOLTAGE LIMITER MUTE MAIN AMP ISO R312 1 5K R310 12K 22P C311 11 5 10 10u35 0 01 10K R306 C301 10u25 R302 270 3 6 RX SX 2 1 SY VCC 7 8 GND TX 4 TY RY 5 10u35 C349 2 2u50 R174 33K C138 R301 270 R348 1 8K R349 1 8K R311 R313 1 5K 20K R347 100K R334 47 R...

Page 13: ... C459 0 01 R476 5 6K R475 5 6K 100 R151 C129 470P C131 470P R157 R360 56K C352 10u35 R354 10 R356 TH1 TH2 TH3 TH4 14 15 16 11 12 13 8 9 10 5 6 7 1 2 3 4 R92 10K C67 10u35 0 01 C62 C66 0 01 C64 47u25 R93 11K C65 0 01 C63 47u25 C308 10u35 7 R440 10K 8 R353 560 10 C71 0 1 C69 C70 47u25 47K R80 R77 510 1u50 R69 10K R66 R70 100 10 R65 10 C61 10u35 R67 820 R89 10 C89 1 2W 1500P R88 10 C72 1500P 1 2W R33...

Page 14: ...E2PSCL DIPSW1 NC24 E2PSDA 23 22 25 24 DIPSW4 DIPSW3 MODEL1 DIPSW2 10K R428 10K R429 28 27 29 LCLK LXDATAS LXDATAM LDATAA R452 1K R453 1K 9 10 11 12 11 13 12 10 9 NC47 180 R425 38 R426 180 39 36 NC32 NC31 NC35 NC34 VSS1 MODEL2 33 32 31 10K R423 35 34 LCDILL NC37 NC40 LED NC36 39 38 37 100 R421 R422 100 40 42 43 44 45 46 41 ATT2 ATT1 COMMSW ATT3 NC44 NC45 52 53 47 48 49 50 51 DPWER NC48 NC49 DCUR DC...

Page 15: ...3 S34 S35 TP22 TP8 TP9 R33 47K TP21 TP92 TP128 TP74 R6 22K 5 6 7 R66 39K 10 9 TP28 C68 10u16 8 TP32 TP65 TP66 TP37 TP25 TP20 R1 47K 4 5 6 ST MONO 3 2 1 7 8 R2 C4 0 22 47K 0 22 C3 R5 TP31 0 22 0 22 C6 0 22 R4 130K TP23 TP183 C64 0 22 0 22 TP29 22K C5 2 3 0 22 1 4 C63 56K C66 R64 TP75 R8 47K 7 1 2 TP180 C65 12 13 11 5 4 C67 10u16 14 TP76 TP30 TP181 HI P TP64 I F S ON OFF 8 3 C20 10u16 47K R24 6 R23 ...

Page 16: ...GND CREF 11 12 SWL SWR C18 10u16 TP53 C17 10u16 2 10u16 TP41 C15 1 TP42 3 5 4 7 TP60 6 8 R21 10K R9 47K TP192 TP43 TP39 TP38 R14 100 R16 100 R15 100 TP40 TP59 OFF ON B M S TP115 S13 TP114 S14 TP113 S15 TP112 S16 TP111 S17 TP110 S18 TP109 S19 TP108 S20 TP107 S21 S12 0 1 C73 0 15 C74 TP182 TP189 0 01 C28 0 01 C27 C75 0 033 47K R52 0 01 C49 0 01 C48 0 01 C38 0 01 C37 1K R17 0 1 C22 0 22 C24 47K R31 1...

Page 17: ...K φ3x8 φ3x16 φ3x14 φ2x8 φ3x12 N09 6216 05 N09 6218 05 N09 6220 05 N15 1040 48 N80 2008 43 N80 3010 43 N82 2006 48 N84 2606 48 N89 3006 43 N89 3008 43 N89 3008 48 N89 3016 48 N09 6217 05 N80 2008 48 N83 3012 48 26 27 28 Mx2 Hx2 Cx2 Qx2 Gx3 4 5 1 13 14 6 8 719 H L L L L H 746 743 723 722 715 751 F F Ax3 Kx3 715 730 752 G G P P P L L L 731 Insulated sheet is contained in a transistor 24 40 42 ED1 Ax3...

Page 18: ...1 1606 05 ACCESSORY 40 2B B11 1446 04 REFLECTION SHEET 41 2A B11 1447 04 OPTICAL DIFFUSER 42 2B B19 2258 12 LIGHTING BOARD D2 B30 1694 05 LED ED1 B38 1150 05 LCD DISPLAY ASSY C3 6 CK73FB1C224K CHIP C 0 22UF K C9 10 CD04AS1H010M ELECTRO 1UF 50WV C11 13 CK73GB1H103K CHIP C 0 010UF K C15 20 CD04AS1C100M ELECTRO 10UF 16WV C21 22 CK73GB1C104K CHIP C 0 10UF K C23 24 CK73FB1C224K CHIP C 0 22UF K C25 26 C...

Page 19: ...5588 05 ELECTRO 47UF 25WV C55 56 CD04BC1C392M ELECTRO 3900UF 16WV C61 C90 5592 05 ELECTRO 10UF 35WV C62 CK73GB1H103K CHIP C 0 010UF K C63 64 C90 5588 05 ELECTRO 47UF 25WV C65 66 CK73GB1H103K CHIP C 0 010UF K C67 68 C90 5592 05 ELECTRO 10UF 35WV C69 C90 5601 05 ELECTRO 1UF 50WV C70 C90 5588 05 ELECTRO 47UF 25WV C71 CK73GB1C104K CHIP C 0 10UF K C72 CF92FV1H152J MF C 1500PF J C73 CF92FV1H182J MF C 18...

Page 20: ...L RD 10 J 1 2W R90 91 RD14BB2C563J RD 56K J 1 6W R92 RK73GB2A103J CHIP R 10K J 1 10W R93 RK73GB2A113J CHIP R 11K J 1 10W R95 96 RK73GB2A152J CHIP R 1 5K J 1 10W R97 98 RK73GB2A102J CHIP R 1 0K J 1 10W R99 104 RK73GB2A472J CHIP R 4 7K J 1 10W R105 106 RD14BB2C333J RD 33K J 1 6W R107 110 RK73GB2A102J CHIP R 1 0K J 1 10W R111 112 RK73GB2A101J CHIP R 100 J 1 10W R113 114 RK73GB2A473J CHIP R 47K J 1 10...

Page 21: ...2A473J CHIP R 47K J 1 10W R432 433 RK73GB2A272J CHIP R 2 7K J 1 10W R434 RK73GB2A103J CHIP R 10K J 1 10W R438 RK73GB2A153J CHIP R 15K J 1 10W R439 RK73GB2A301J CHIP R 300 J 1 10W R440 RK73GB2A103J CHIP R 10K J 1 10W R441 RK73GB2A102J CHIP R 1 0K J 1 10W R442 RK73GB2A182J CHIP R 1 8K J 1 10W R443 444 RK73GB2A272J CHIP R 2 7K J 1 10W R450 453 RK73GB2A102J CHIP R 1 0K J 1 10W R454 455 RK73GB2A101J CH...

Page 22: ... 118 2SA1376A L K TRANSISTOR Q119 120 2SC3419 Y TRANSISTOR Q121 122 2SC1845 F E TRANSISTOR Q123 124 2SA992 F E TRANSISTOR Q125 128 2SC2235 F TRANSISTOR Q129 132 2SA965 F TRANSISTOR Q133 136 2SC3856NF TRANSISTOR Q137 140 2SA1492NF TRANSISTOR Q141 DTA124EUA DIGITAL TRANSISTOR Q142 2SA1576A TRANSISTOR Q143 144 2SC4081 TRANSISTOR Q145 2SA1576A TRANSISTOR Q146 2SC1845 F E TRANSISTOR Q147 2SA992 F E TRA...

Page 23: ...20 330 470 750 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 5000 6300 8000 CHIP CAPACITORS E...

Page 24: ... 5 THD Rated Power Output 4Ω 20Hz 20kHz 14 4V 125W x 2 0 05 THD 4Ω DIN45324 14 4V 125W x 2 2Ω 1kHz 14 4V 250W x 2 0 5 THD Bridged Power 4Ω 1kHz 14 4V 500W x 1 0 5 THD MAX Power Output 1000W Low Pass Filter 50Hz 200Hz 24dB oct High Pass Filter 50Hz 200Hz 12dB oct Infrasonic Filter 15Hz 24dB oct Frequency Response 5Hz 70kHz 0 3dB S N Ratio 105dB Sensitivity Max 0 2V Rated Output Sensitivity Min 5V R...

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