Kenwood KAC-8102-D, KAC-8152-D, KAC-9102-D, KAC-9152-D Service manual

POWER AMPLIFIER

KAC-8102D/8152D KAC-9102D/9152D

SERVICE MANUAL

KAC-9152D

(E type,M type)

CONTROL SYSTEM

REMOTE CONTROL

KAC-8102D/9102D

MAXIMUM POWER

Powe

Subwoofer

Amplifie

KAC-9152D

KAC-8152D

Dressing Panel (A21-4465-02) : KAC-8152D/9152D (A21-4466-02) : KAC-8102D/9102D

Dressing Panel (A21-4471-02) : KAC-9152D(K type) (A21-4472-02) : KAC-9102D (A21-4473-02) : KAC-8152D(K type) (A21-4474-02) : KAC-8102D (A21-4522-12) : KAC-9152D(E/M type) (A21-4523-12) : KAC-8152D(E/M type)

KAC-8152D(E type, M type)

KAC-9152D(K type)

KAC-9102D

Fuse (40A) (F52-0016-05) : KAC-8102D/8152D Fuse (30A) (F52-0015-05) : KAC-9102D/9152D

Fuse (30A) (F52-0015-05) : KAC-9102D/9152D

Except KAC-8102D/9102D

Remote control

9

1

2

1

5

6

5

7

5

1

7

5

0

LEVEL [dB]

8

5

1

8

4

0

FREQUENCY

9

5

1

[Hz]

0

Accessories (W01-1606-05)

Modular cable (E30-6240-15)

Screw set (N99-1759-05)

6m

Except KAC-8102D/9102D

Mouting hardware (J22-0301-14)

Connecting cord assy (E30-6145-05)

KAC-8152D(K type)

KAC-8102D

Screw set (N99-1766-05)

19cm

This product uses Lead Free solder.

KAC-8102D/8152D KAC-9102D/9152D

BLOCK DIAGRAM

LINE IN

LINE OUT

SP IN

X09-5820-10

IC11

50

40

30

20

10

0

-10

X08-4180-10

IC11

ISO

LEVEL DIAGRAM

ISOLATION X08 D CLASS AMP

INPUT

VOL

LEVEL

INV

NOR/REV

Q151

KAC-9152D/9102D

KAC-8152D/8102D

X08

OUT

MUTE

IC11

I.F.S 25Hz

15Hz

IC31

COMPARATOR

TRIANGLE WAVE

SP

OUT

15V

SENS

Q25,26

+15V AVR

-15V AVR

Q28,42

IC12,13

DEAD TIME CONT

+15V AVR

IC13

FREQ

L.P.F

Q401-415,187-190

D CLASS AMP

THERMAL PROTECT

HB

Q8-20

BASS BOOST

KAC-9102D KAC-8102D ONLY

OVER LOAD DET.

OP AMP

D.D CON

IC12

LVL

DC OFFSET DET.

TR SW

IC51-53

REMOTE BASS BOOST

KAC-9152D KAC-8152D ONLY

P-CON DET

R E M

KAC-9152D KAC-8152D ONLY

SP OUT

P-CON

BATT GND

IND

LVL FREQ

2

KAC-8102D/81 52D KAC-9102D/91 52D

COMPONENTS DESCRIPTION

● PREAMPLIFIER UNIT (X08-4180-1x)

Ref. No. Application / Function Operation / Condition / Compatibility

IC11 (1/2) INFRA SONIC FILTER Cutting super-low area of voice signals IC11 (2/2) INVERTER Reversing voice signal phase IC12 (1/2) OP AMP Voltage amplification, buffer IC12 (2/2) BASS BOOST High-boost (variable levels) IC14,15 BASS BOOST High-boost (variable levels) IC13 LOW PASS FILTER Cutting high range of voice signal

● AUDIO UNIT (X09-5820-1x)

Ref. No. Application / Function Operation / Condition / Compatibility

IC1 DC/DC converter IC Create drive signal for switching element IC2 (1/2) Differential amplifier Detection of temperature, DC, and excess current and hold protection for a certain time IC2 (2/2) Differential amplifier Containing excess voltage of ±B IC11 Isolation amplifier Prevention of noise by the electric potential difference of GND IC12,13 NAND Generation and forming of Dclass section reversal waveform and dead time IC31 Comparator Digitalize signal by comparing analog signal and triangular wave IC32 (1/2) Triangular wave generation Reference signal generation for converting analog signals to digital signals IC32(2/2) Error amplifier Error compensation by feedback from output IC51~53 OP amp, electronic volume Frequency, variable level BASS BOOST IC61,62 Comparator Q1-3 PCON switch Turns on the circuit when ON-signal is impressed on PCON Q4,5 Mute Mute drive signal generation, Turn LED off Q8~11 Gate drive DC/DC converter FET gate drive Q12-20 DC/DC converter DC/DC converter switching Q25,26,28 AVR ±15V AVR Q29,30 Tracking when ±15V AVR is OFF Adjusts -15V’ AVR falling to ‘+15V’ AVR falling Q36 DC/DC converter ON/OFF control Stops DC/DC converter switching when protection is triggered Q37~38 Q41 4.4V AVR Vref 5V reference AVR Q42 AVR ±15V AVR Q43 DC/DC converter ON/OFF control Stops DC/DC converter switching when protection is triggered Q151 Mute Turning off voice signal Q187~190 Electric power amplification Dclass large current switching Q401~415 Pulse amplification and rectifying Generation of signal for driving Dclass final FET Q416 15V AVR Integration AVR for obtaining Dclass High+B

Q417,418

Q501 Emitter follower Q601,602 Comparator Q603 DC/DC converter control Q604~607 Q608~611 Latch circuit Detection and holding of output excess voltage

DC/DC converter pulse ON/OFF control

Control of ON/OFF of electric Makes the electric power amplification section non-operative for 1.2 seconds when the power amplification section power is turned on and when protection is triggered

Electric current and voltage conversion

Detection of short-circuiting of SP output and determine excess current for triggering protection

ON/OFF of DC/DC converter drive waveform

Generation of temperature compensation reference voltage for control of electronic volume Detection of short-circuiting of SP output and determine excess current for triggering protection Convey IC62 u pin output, result of excess current detection, to IC2 and stop the DC/DC converter Conversion of current to voltage of the current flowing to final

3

A B C D E

Q

KAC-8102D/8152D KAC-9102D/9152D

1

PC BOARD (FOIL SIDE VIEW)

AUDIO UNIT X09-5820-1x A/2 (J76-0072-11)

C31

D23

W65

R154 C152

R156

C108

Q26

R508

R65

Q30

R64

BE

B

R153

BE

D151

W62 W61

W109

D601

C504

D904

W328

J4

BE

R155

C520

W326

EB

E

R152

D602

D502

R151

W59

W60

R52

BE

R66

R53

+15V

Q414

Q410

Q411

Q415

C153

W323

C604

R607 R609

IC61

R605

W324

D906

R527

Q501

BE

R528

R507

13

24

BE

R161

R603

C151

D908

R526

58

41

R604

Q25

R606

D907

R525

W322

W360 R506

W58 W54

C602

C505

D10

C601

W49

W50

Q4

W53

W44 W45

D9

R503 R501 R502 R504

W43

Q603

C603

W57

R509

W52

BE

C5

W46

W56

R608

R12

W356

BE

R602

R11

R13

W321

D603

D607

W55

R601

W320

C4

Q2

R73

R206

R199

BE

Q609

C195

C196

D606

C25

Q611

R10 R68

Q187Q189

W27

W26

W23

W25

C613

R9

W124

W114

SGDDSG

R203

R204

W48

W36 W37

W115

W38

C611

Q607

Q606

E

R627

R625

B

EB

R626 C610

R624

Q605

Q604

W51

EB

R623

W34

W41

Q602

R622

R615

W31

C606

D604

BE

C2

W39

W35

Q608

D605

R638

R640 C614

C612

R8

W33

D11

R74

W29

Q601

BE

W32

R14

R641

R642

C6

Q610

BE BE

W317

W318

W30

D7

W319

C615

R644

R639

R7

D6

R643

C3

BE

R617

R610

R611

D5

R4

R2

R620

R612

D8

Q1

Q5

R616

C607

R621

R619

C609

C608

58

IC62

14

R614 R613

C605

Q3

R3

EB

R5

R6

BE

W40

C501

C503 C502 C519

W22

+B

W122

L4/L14

R200

W19 W20 W21

R629R630

W505

R48

W506

L14

W18

P1

W123

W121

R520

C513 R519

IC53

W75

R67

Q29

R418

R183R184

W81

R61

BE

D25

W351

Q417

R408

W88

D182

814

71

814

71

C527

R120 C111 C113

R116 C110

W79

BE

Q404

W118

C526

IC11

C182

D304

D305

C523

W117

R521

R517

C516

58

41

C109

R115

R57

BE

Q28

Q402

BE

R407

R409

BE

Q406

R305

W110

W339

R304

R306

D303

R516

W77

R518

IC52

C509

W78

R121 R119

W338

C115

D105

R113

R114

Q42

R402

814

71

W337

C116

D106

-15V

R404

R405

IC31

D308

W336 R515

W333

C506

D104

R58

BE

Q407

W332

W72 W73

C107

D103

R410

58

41 R307

D306

W76

R403

BE

D307

C524 C525

J2

R162

C511

R107

Q403

EB

Q413

C510

D501

C105

C156

R159

C302

C301

W74

R111

9

10

W69

W99

BE

W71

D110

R109

W353

C303 R303

R158 C154

IC32

D109

R110

W330 W331

EE

R510

C106

Q409

R112

R108

C35

Q412

Q408

R160

R157

58

41

Q151

R301

W68

D107

1 2

R415 R413 R411

R416 R414 R412

C155

C304

W64

W66

R302

W329

W67

D108

W95

C36

2

3

R426

C406

D402

R424

IC13

R423

C405

W108

W107

W105

W100

W102

R118

R425

R210

W350

C103

D101

D401

C522

R211

W119

R103

C117

4

W106

W104

5

W103

CN1

28

17

6

814

71

W93

R105

W346

R417

W92

R419

C401

C181

R514

W94

R401

D181

C518

C517

W361

R511

W401

R104

C104

C101

Q401

W348

D186

R208 R209

C507 R512

W85

W89

IC51

C114

R420

BE

R182

R181

C508

R523 C515 R522 R529

R106

R101

C32

W354

Q418

+5V

W84

58

41

C102

J1

BE

R406

W355

PWM

D183

W87

R513

R124

R102

C514

W352

BE

Q405

C183

IC12

R117 R122 C112 R123

C521

LINE OUT

LINE

IN

SPEAKER

LEVEL

INPUT

REMOTE

SPEAKE

7

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

4

JIHGF

KAC-8102D/8152D KAC-9102D/9152D

1

W14

R207

R202

C20

C16

J3

W505

W506

P1

Q190

L4

R201

C26

P2

C40

W15

C198

C199

D4

Q188

R636R637

W504

C21

R46

R47

C23

W120

C15

P-CON GND

R1

DDSG SG

C194

C193

-B

R49

C197

W16

W17 OUT

C22

SPEAKER OUTPUT POWER IN

X09 B/2

X09-5820-1x

Ref. No. Address

IC1 6I

IC2 3I IC11 6B IC12 4B IC13 4B IC31 4C IC32 4C IC51 5B IC52 5B IC53 5B IC61 5C IC62 5D

Q1 6D Q2 6D Q3 6D Q4 6D Q5 6D Q8 6I

Q9 6I Q10 5I Q11 6I Q12 4H Q13 4H Q14 5H Q15 5H Q17 3H Q18 3H

2

3

D19

C402

Q416

BE

R421

R422

W9

W11 W12 W13

W501

L3

D18

Q17

Q18

Q19

D404

D407

SDGSDGSDGSDGSDGSDGSDGSDG

C403

D403

C404

D406 D405

W309

D14

W6

R17

R25

C8

W357

41

R33

R32

R31

W2

R20

R19

R72

R22

IC2

C14

C13

R30

13

C81

C7

C9

W305

R23

85

R35

WH2

D81

W303

BE

Q36

D15

D12

W302

W304

W1

Q19 3H

TH1

R45

C19

Q20

Q20 4H Q25 2C Q26 2C Q28 2B Q29 2B Q30 2C

Q12

C18

Q36 3I Q37 6I Q38 6I

4

Q41 5I Q42 2C Q43 5I

Q151 4C Q187 2E Q188 2G Q189 2D Q190 2F Q401 3B Q402 3B Q403 3C Q404 3B Q405 3B Q406 3B Q407 3C Q408 3C Q409 3C Q410 3C Q411 3C Q412 3C Q413 3C Q414 3C Q415 3C Q416 2H Q417 3B Q418 3B Q501 6C Q601 5D

5

6

W502

Q13

Q14

Q15

W5

D3

D2

J5

W358

Q43

BE

W112

Q41

EB

Q10

R43

BE

R37

R41

W308

BE

R39

Q11

BE

R44

R38

Q9

R42

D1

BE

R40

Q38

BEBE

D16 D17

R70

W3

C10

W306

W301

R29

R71

18

IC1

169

W116

C12

R34 C11 R36

Q8

W307

Q37

C17

W7

W8

W10

L1/L11

L11

C1

L1

W503

Q602 5D

BATT

Q603 5D Q604 4D Q605 4D Q606 4D Q607 4D Q608 5D Q609 5D Q610 5D

7

Q611 5D

5

K L M N O

KAC-8102D/8152D KAC-9102D/9152D

1

PC BOARD (FOIL SIDE VIEW)

PREAMPLIFIER UNIT X08-4180-1x A/2 (J76-0068-02)

S2

OFF

10

TP24

R111

C108

41

TP26

TP25

BASS BOOST

TP45

R122

R121

C116

TP38

C117

C118

R126

R112

TP37

TP40

C107

R113

W10

TP42

1

46352241365

LOW PASS

R125 C119 R124

TP41

TP23

R110

C101

TP15

W3

W16

VR2

50Hz

TP12

C102

TP36

200Hz

51

6

I.S.F

R102

TP11

R101

58

IC11

R103

C104

TP14

R104

W2

25Hz

TP27

58

C201

R202

R203

R201

C109

VR3

R119 C115

R120

C123

58

IC13

C122

TP39

W22

IC12

W13

14

R123

C203

C202

R208

R206

R204

58

2

W252

R212 R210

C208

R211

3

C207

IC14

C204

W256 W255 W254

41

58

IC15

W203

W202

4

C126

R129

TP48

W52

41

R207

W204

W251

R209

C206

C205

18dB

0dB

W201

TP43

TP44

C121

W151

W21

R205

W253

W14

C120

W6 W5

15Hz

TP20

R109

R127

TP22

1

463 52

INPUT SENS

C103

C106

41

R108

W4

4

6

I.N.V

W15

R107

S1

TP18

1

3

TP21

W12

TP17

W11

TP13

R106

C124

ONOFF

R105

W9

VR1

5V

TP16

TP19

TP1

W20

W18 W17

200mV

W8

C105

W7

CN2

3

1

TP49

W51

+15V

W19

TP5

LED

ISO GND 1

ISO GND 2

SIG1

17

82

TP7

TP2

-15V TP8

DGND

CN1

TP4

SIG2

TP3

X08 B/2

5

6

7

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

R623

VR62

1

3

FREQUENCY

TP63

R62

TP61

TP60

3

2

4

TP65

TP64

1

J1

VR61

4

X08-4180-1x

Ref. No. Address

IC11 4N IC12 2M

TP62

1

IC13 4M IC14 2L IC15 3L

BOOST

LEVEL

6