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Kenwood KAC-7204, Service Manual

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Kenwood KAC-7204 Service Manual Download Page 16

-13.6V

-13.6V

-47.3V

-15.0V

-13.9V

10.0V

12.5V

15.0V

15.0V

+-B=47.3V(BATT=14.4V)

52.6V(BATT=16V)

-15.0V

-15.0V

15.0V

10.1V

13.4V

2.8V

-1.0V

14.2V

3.7V

0V

0V

12V

3.3V

0V

-2.1V

-1.0V

0.1V

0V

4.5V

5.0V

1.7V

5.0V

4.3V

14.2V

5.0V

14.2V
14.2V

ATT2=-1.5dB

ATT1=-1.5dB

15.0V

2.8V

2.8V

1.6V

-15.0V

47.3V

-47.3V

47.3V

IC5

KAC-7204

(X09-8760-10)

2SA1376AA(L,K)

Q209,210

D102,254,295,296

D10,52,101,253,255

605,610-613,615,616,

260,261,601-603,

D7,50,152,203-206,251,

Q252,254,255,257

Q251,253,256,258

Q222,225,226,229

Q220,223,224,227

D103,104

D609

D608

D607

D606

D604,614

D600,617

D8,9

624,699

D6

D5

D3,4

D1,2

Q609

Q604

Q610-613

Q211,213

UDZS6.8B

B30-1743-05

:

UDZS13B

UDZS6.2B

UDZS15B

UDZS10B

B30-1770-05

:

:

:

:

:

:

LM1MA142WA-G

LM1MA142WK-G

:

:

1SS355

1SS133

:

:

FRH10A20

FCH10A20

UDZS16B

1N5406-TSC

:

:

:

:

2SC2235-F

:

2SC945AA(Q,P)

2SA965-F

:

2SD1863

2SB1241

:

:

:

2SA1695NF

2SC4468NF

KTC3114-PH(A)

:

:

:

Q50,603,614,615,

Q17,201-204,217,218

281-284,602,605,606,

Q15,51,241,242,

TL494IDR

BA4560RF

IC1,2,6-8,10-12

Q3-8

Q16,215,216

Q205-208

617,698

Q13,14

Q10,11

Q9,12

616,618

Q2

Q1

IC5

:

:

STP60NF06FP

:

2SC1845-A(F,E)

2SC3478AA(L,K)

2SA1576A

2SA992-A(F,E)

:

:

:

:

:

DTA114EUA

2SC4081

:

2SA1577

2SC4097

:

:

:

2SA1859ANF

2SC4883ANF

:

:

Q223

D295

D296

Q202

Q210

D261

Q204

Q213

Q282

Q284

Q281

Q283

Q242

Q241

Q201

Q207

Q206

D152

D251

Q205

Q208

D254

D253

Q203

Q209

Q211

D206

Q220

D204

Q256

Q258

Q224

Q216

Q218

Q222

Q225

D205

D255

Q252

Q255

Q254

Q226

Q257

Q217

Q215

Q229

D615

Q615

Q617

Q616

Q618

POP

Q2

D614

Q611

Q610

Q612

Q613

D613

Q614

FAN

CN2

CN1

INPUT

SP

J2

LINE

AR AL

IN

R

L

OUT

LINE

D624

D52

D260

D102

D104

D103

IC2

(1/2)

(2/2)

IC2

J1

D101

IC1

(1/2)

(2/2)

IC1

HPF

(2/2)

(1/2)

D203

Q251

Q253

Q227

HPF 12dB/OCT,F=VR CONT (50-200Hz)

(2/2)

IC7

IC8

INVERTER

Rch : PHASE

(2/2)

HPF/OFF

/LPF

D4

Q17

D3

Q16

Q1

D6

Q4

D5

Q3

IC11

B.B 0+18dB (VR) F=40Hz

(2/2)

IC11

(1/2)

LPF 50-200Hz 24dB/OCT

IC12

(1/2)

IC7

S6

LPF

(2/2)

IC8

INPUT SENS.

(1/2)

IC12

BOOST

BASS

IC10

IC10

(1/2)

D603

D699

Q602

D602

D604

Q606

D605

Q605

D606

D611

D607

Q609

D608

D617

D600

D601

D609

Q603

Q698

Q12

Q14

Q604

D2

D1

P1

SP

OUT

J3

Q6

Q8

Q11

Q10

D10

Q7

Q5

Q9

IC6

(2/2)

Q13

D612

D616

D7

D9

D8

(1/2)

IC6

D610

Q15

Q50

D50

Q51

GND LINE

SIGNAL LINE

B LINE

B LINE

NOISE MUTE

AUTO P CON

ISO

THERMAL

ATT

DC/DC

ATT

MUTE

POWER AMP

LATCH

FAN+B

P-CON

MUTE

SW

14V

DC/DC CONTROL

FAN

2.2

R51

R622

2.2K

100P

C228

1

3

2

R265

TP3

R

R280

11K

 10K

R285

R286

10K

R915

R916 10K

 10K

R287

24K

R914

10u50

47P

C202

10K

R266

 10K

30K

R204

22K

R242

10K

R218

R216

150

R240

150

R260

33

4.7K

R220

6.2K

R212

R210

100

R264

1K

C208

C206

4700P

C264

47u25

1.5K

R222

6.2K

C212

220P

220P

470

VR6

10P

C210

R214

22K

R290

100

R226

C218

22P

C214

22P

1.3K

C216 10u50

C227

47P

TP4

TP1

R281

24K

R283

R228

TP9

R206

C204

220P

22K

R227

30K

R205

22K

220P

C203

R201

11K

L

R203

22K

C201

10u50

100

100

100u63

R208

1K

1K

R224

R207

1K

1K

R223

C226

470P

470P

C223

C225

C207

C205

4700P

C263

47u25

R211

R209

100

R263

1K

220P

C211

220P

1.5K

R221

6.2K

R219

6.2K

R225

C213

22P

C217

22P

1.3K

C215 10u50

470

VR5

10P

R213

22K

C209

R289

100

2.2

C232

R243

2W

C233

R234

100

100P

R278

2.2

2.2

C222 1000P

C220 1000P

R230

5.1K

R238

3.6K

100P

3.6K

R232

5.1K

R272

R262

470

R250

R246

0.1

2W

R282

0.1

R248

470

0.1

2W

R276

2.2

R258

0.1

2W

R236

100

100

R202

10

R235

R274

R231

5.1K

C221 1000P

C231

100P

R249

3.6K

R229

C219 1000P

R271

R261

470

5.1K

R237

3.6K

R247

R257

R277

R279

2.2

2.2

0.1

2W

0.1

2W

2W

0.1

R245

470

R155

0.1

2W

C608 100u10

R668

R666

2

R663

10K

47

36K

R660

R664

43K

47K

R667

1

R665

36K

47

R662

10K

R621

47K

TP39

R661

TP46

R659

5.6K

TP45

C699

47K

C616

0.1

1u50

R658

43K

10

C607

0.01

R617

R620 47K

C606 100u10

12K

R629 10K

R630 47K

TP40

C613 0.01

C609 0.01

R634 2.2K

TP50

R633

6.2K

C617 0.01

R632 12K

TP49

R635 10K

R631

12K

TP44

C610 0.01

100P

R105

10K

0.01

GND

+B

1

2

+B

2

GND

1

RR+

2

1

RR-

4

3

RL-

6

5

8

7

RL+

10

9

100K 10u50

2.2K

R121

C620 0.01

FR+

2

R217

R241

10K

150

R215

R239

150

4.7K

33

R251

4.7K

100K 10u50

2.2K

R120

FL-

TP12

FR-

TP14

R128

C111

C112

10u50

R129

100K

4

8

TP11

FL+

TP13

10u50

C110

100K

R127

10

C109

R122

TP18

1000P

C124

TP6

0.01

TP8

R102

1K

C102

1000P

TP7

C101

R101

1K

R104

C104

10u50

10K

R114

C106

15P

TP17

R106

10K

R103

10K

C103

10u50

C114

 15P

R124 10K

C134 100P

7

10

2

8

4

R110

10K

5

4

R112

2
3

1

R108

12K

TP20

10K

1K

R100

C140 1000P

C132 100P

R126 10K

6

TP22

8

0.01

0.01

C36

C34

C698

TP16

10K

C105

15P

R113

4.7K

TP15

TP21

2

12K

R107

R111

10K

3

TP19

1

R109

7

R125 10K

6

R123 10K

C133 100P

C113 15P

C131

4

5

8

R149 240

C121 0.1

R119 9.1K

TP32

100

C230

R233

R273

2.2

R275

2.2

1

0.22

C108

10u50

8

5

ISO-L

0.01

C120

8.2K

0.1

R130

4

6

7

10u50

2

C116

R116

47K

TP31

56K

9.1K

C118

R118 R132

GND

R115

47K

13

C126 0.01

TP35

R134

C122

47K

VR1 50K(C)

7

4

5

8

9

6

R131 56K

R133 47K

C147 0.01

4

TP75

C128 15P

R138 62K

5

R136

4

2

3

5

4

R135 430

R137 430

1

7

10K

8

5
6

C148 0.01

10K

9

7

8

R141

R143

10K

56K

R600 22K

C611

3

C615 10u50

R636 18K

10u50

1
2

C5

47u25

C612 10u50

R638 22K R72

2.2

C3

47u25

R2

R4

R74

100

C4

47u25

100

10K

R602

R71

R639

C2

47u25

10K

2.2

R3

R73

R1

10

3300u63

R7 10

1/2W

3300u63

1000P

16K

C7

R8 10

1/2W

33K

R6

33K

C9

R5

C6

C8

1000P

3900u16

C18

2200P

R12

47

C11

3900u16

R30 10

1/2W

C10

R11

47

16K

L3

R146

C136

R142 240

C130

0.1

4.7u50

2.2K

R144

4

3

2

8

1

R140 150K

6
5

7

R147 150K

6

5

7

10K

R148

2.2K

C138

100P

R150 47K

VR4 10K(C)

C129 0.01

C127 0.01

C125 100P

R423

1K

R

R167 47K

TP47

10

0.033

R154 R157

R153

R117 8.2K

10u50

ISO-R

C117

C107

0.1

0.22

TP30

C135

0.15

20K

C115

R152

20K

10K

2
3

180K

1

10u50

2
3

1

C119

TP36

R158

7.5K

C139

R156

TP29

10K

C137

3

6

1

5

2

4

VR2 50K(C)

9

8

7

0.033

R160

7

9

8

6

3

2

6

5

6

0.15

R161

100K

9.1K

4

7

8

10u50

C143

VR3 10K(A)

R139

620

R145

2

3

1

47K

R163

C145

0.01

C141

R162

7.5K

0.01

C146

C123

4.7u50

2.2K

R159 10K

R151

TP67

2

R165 2.2K

4

8

3

1

L

1K

R422

R606

R607

10

R692

33u35

C601

R693 10K

C621 0.01

R603

R699 18K

R608

18K

R609

33K

100

R604

10K

C602 10u50

10K

R613 1.5K

4.7K

TP69

C603 10u50

TP72

C19

0.047

C20

0.047

1/2W

1/2W

R616

3.9K

TP84

TP85

TP48

C600 0.01

C604 10u50

C605 10u50

R640

R625 620

R619

4.7

1.5K

R627

1K

680

22K

R605

33K

R694

R695

10K

R626

21uH

21uH

2

1

W4

W5

C1

10u25

L1

L2

TP74

3

LCH-

2
1

RCH-
RCH+

4

5

LCH+

P-CON

FUSE=40A

BATT 14.4V

6

GND

7

TP91

TP90

IN2+

REF

IN2-

VCC

C2

E2

OUTCTRL

R643

R624

10u50

10u50

R21

10K

R35

10K

C15 47u25

C13

8.2K

R18

4.7K

R55

47

R57

47

R14

47

R10

R54

47

R9

4.7K

R56

47

R13

47

TP71

TP66

R16

1.5K

TP70

R15

1.5K

TP68

R646 3K

220K

7

6

5

TH601

TH602

TH605

C614

0.01

TP73

R648

4.7K

4.3K

R696

200

R19

10K

DTC

TP88

1000P

10u50

C16

C14

R22 100K

0.1

R24

20K

C17

R49

1

8

C1

6

7

GND

RT

TP86

5

CT

R17

33K

R34

150

R27

1K

R23

10K

10u50

R20

330K

R26

100K

R25 6.8K

TP83

IN1-

3
4

FBACK

1

2

IN1+

10u50

C58

C57

R649

8

1

4

3
2

R647

220K

R52

2.2

R652 4.3K

2.7K

R651

4.7K

C24

R656

3.9K

R653 4.3K

R618

4.3K

R53

R650 100K

1K

9

E1

10

11

12

13

14

16

15

TP89

TP51

C50

10K

R691

10u50

2.2K

R50

R58

10u50

C51

10K

0.047

C52

1

2

1

2

FAN+B

FAN+B

FAN+B

FAN+B

SW14.1V

SW14.1V

SW14.1V

B14.4V

B14.4V

B14.4V

+15V

+B

+B

+15V

+15V

B

15V

+15V

+15V

+15V

SW14.1V-1

SW14.1V-1

+15V

-15V

+15V

+15V

-15V

+15V

-15V

+B

+B

+B

+B

+B

100

R169

100

R168

100

R170

100

R171

C149

4700P

4700P

C150

2

13

5

4

7

8

6

9

15V

15V

15V

15V

15V

15V

B

B

R59 100K

4.7K

R61

10K

R60

1K

R62

TP78

TP79

TP10

TP5

TP2

TP25

TP26

TP27

TP28

TP38

TP37

TP34

TP33

TP41

TP42

TP59

TP62

∗

TRANS

TP80

TP81

TP55

TP58

TP54

TP53

TP82

TP87

10

R28

10

R29

R614 6.8K

R615 3.9K

3.6K

R611

30K

R610

3.6K

R612

TP63

TP64

TP76

TP43

TP57

TP56

TP61

TP60

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

1

1

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

3

3

3

3

4

4

4

Summary of Contents for KAC-7204

Page 1: ...OOST LEVEL dB LPF FREQUENCY Hz HPF FREQUENCY Hz INPUT SENSITIVITY V MIN MAX OFF LPF FILTER LINE IN LINE OUT HPF SP LEVEL INPUT SIGNAL SENSING TURN ON FUSE 40A P CON LEFT RIGHT BRIDGED POWER IN SPEAKER OUTPUT Accessories W01 1606 05 Screw wrench key set N99 1820 05 Connecting cord assy E30 6145 05 19cm Stereo Bridgeable Power Amplifier M type E K type Dressing Panel A21 6640 01 E K type A21 6641 01...

Page 2: ...Hz 18dB 50 200Hz 50 200Hz IC2 IC1 IC7 IC12 IC7 IC8 IC8 IC10 IC11 Q281 283 Q282 284 Q241 Q242 Q201 229 Q202 226 Q215 218 610 Q611 612 TH601 602 605 Q1 2 D5 6 Q50 D50 52 Q605 Q604 IC5 Q609 699 AUDIO UNIT X09 8760 10 Ref No Application Function Operation Condition Compatibility IC1 2 Isolation circuit IC5 DC DC converter IC6 Temperature ATT control ATT2 on by pin1 H ATT1 on by pin7 H IC7 HPF IC8 Buff...

Page 3: ...mute_Tr Q604 SW14V Power supply for DC DC_IC Q605 Pcon control ON by pcon H Q606 Over voltage detection Turn off Q605 when over voltage is detected Q609 Power supply for FAN Q610 Over current protection Q611 612 DC protection Q613 614 Latch circuit for DC protection Hold the protection operation while the DC protection is being operational Q615 616 Shock noise prevention circuit Q617 618 Shock noi...

Page 4: ...13 C15 C18 C24 R7 R8 R28 R29 R30 R155 R273 R245 R275 R616 W129 W147 W146 W119 W118 W4 W182 W W125 W123 W149 W194 W193 W186 W187 W188 W189 W190 W185 W184 W183 W180 W179 W178 W175 W148 W170 W167 W169 W168 W172 W171 W177 W176 W195 W139 W138 W135 W137 W140 W144 W150 W128 W124 W122 W117 W166 W1 W131 W143 W156 W161 W160 W159 W158 W162 W163 W134 W133 W132 W120 W11 W12 W16 W1 E B E 2 1 E B S D G S D G S D...

Page 5: ... AMP IN L AMP IN R R L PIN G LPF SENS BB H OFF L HPF L 10 9 2 1 L R R LED B BB G L NF B B B E L L W13 W136 W79 W97 W141 W142 W400 W55 W73 W59 W70 W431 C223 W63 W127 W196 R697 W69 W199 W95 W93 W330 C2 W21 C3 C611 C612 C615 C606 R202 C57 C58 C4 C5 C50 C51 C140 C203 C204 C207 C208 C225 C226 C263 C264 C604 C605 C608 C618 C619 R622 W23 R203 R204 W25 C103 C104 C109 C110 C111 C112 C115 C116 C119 C122 C12...

Page 6: ...20P C211 220P 1 5K R221 6 2K R219 6 2K R225 C213 22P C217 22P 1 3K C215 10u50 470 VR5 10P R213 22K C209 R289 100 C C2 R234 100 10 C222 C220 10 R236 100 100 R2 R235 C221 C 10 C219 100P R105 10K 0 01 GND B 1 2 B 2 GND 1 RR 2 1 RR 4 3 RL 6 5 8 7 RL 10 9 100K 10u50 2 2K R121 C620 0 01 FR 2 R217 R241 10K 150 R215 R239 150 4 7K 33 R251 4 7K 100K 10u50 2 2K R120 FL TP12 FR TP14 R128 C111 C112 10u50 R129 ...

Page 7: ...116 47K TP31 56K 9 1K C118 R118 R132 GND R115 47K 1 3 C126 0 01 TP35 R134 C122 47K VR1 50K C 7 4 5 8 9 6 R131 56K R133 47K C147 0 01 4 TP75 C128 15P R138 62K 5 R136 4 2 3 5 4 R135 430 R137 430 1 7 10K 8 5 6 C148 0 01 10K 9 7 8 R141 R143 10K 56K R600 22K C611 C615 10u50 R636 18K 10u50 C5 47u25 C612 10u50 R638 22K R72 2 2 C3 47u25 R2 R4 R74 100 C4 47u25 100 10K R602 R71 R639 C2 47u25 10K 2 2 R3 R73 ...

Page 8: ...9 240 0 1 R146 C136 R142 240 0 1 4 7u50 2 2K R144 4 3 2 8 1 150K 6 5 7 150K 6 5 7 10K R148 2 2K C138 100P R150 47K VR4 10K C C129 0 01 C127 0 01 C125 100P R423 1K R R167 47K C123 4 7u50 2 2K R159 10K R151 TP67 2 R165 2 2K 4 8 3 1 L 1K R422 R613 1 5K TP69 C603 10u50 TP72 C19 0 047 C20 0 047 1 2W 1 2W R616 3 9K TP84 TP85 TP48 21uH 21uH 2 1 W4 W5 C1 10u25 L1 L2 TP74 3 LCH 2 1 RCH RCH 4 5 LCH P CON FU...

Page 9: ... F G Y Z F2 6x13 M4x8 F3x10 F3x6 F3x8 F3x16 F3x10 M6 AU M4 AU N09 6365 05 N09 6726 05 N80 3010 43 N89 3006 43 N89 3008 48 N89 3016 48 N09 6447 05 N07 0003 08 N09 4214 08 Gx2 Yx2 Zx5 C C C E E 3 E E E E E E C 723 Ax8 Ax7 Ex4 Ex2 Ex2 F 715 718 719 16 E E 702 F F 715 719 16 E Ex2 Ex2 F EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied ...

Page 10: ...103 104 CD04BJ1H100M ELECTRO 10UF 50WV C105 106 CC73GCH1H150J CHIP C 15PF J C107 108 CK73GB1H104K CHIP C 0 10UF K C109 112 CD04BJ1H100M ELECTRO 10UF 50WV AUDIO UNIT X09 8760 10 KAC 7204 C113 114 CC73GCH1H150J CHIP C 15PF J C115 116 CD04BJ1H100M ELECTRO 10UF 50WV C117 118 CK73FB1H224K CHIP C 0 22UF K C119 CD04BJ1H100M ELECTRO 10UF 50WV C120 CK73GB1H103K CHIP C 0 010UF K C121 CK73GB1H104K CHIP C 0 1...

Page 11: ...2E104J CHIP R 100K J 1 4W R123 126 RN73GE1J103D CHIP R 10K D 1 16W R127 129 RK73EB2E104J CHIP R 100K J 1 4W R130 RK73GB2A822J CHIP R 8 2K J 1 10W R131 RK73GB2A563J CHIP R 56K J 1 10W R132 RK73GB2A912J CHIP R 9 1K J 1 10W R133 134 RK73GB2A473J CHIP R 47K J 1 10W R135 RK73GB2A431J CHIP R 430 J 1 10W R136 RK73GB2A103J CHIP R 10K J 1 10W R137 RK73GB2A431J CHIP R 430 J 1 10W R138 RK73GB2A623J CHIP R 62...

Page 12: ...73GB2A302J CHIP R 3 0K J 1 10W R647 RK73GB2A224J CHIP R 220K J 1 10W R648 RK73GB2A472J CHIP R 4 7K J 1 10W R649 RK73GB2A272J CHIP R 2 7K J 1 10W R650 RK73GB2A104J CHIP R 100K J 1 10W R651 RK73GB2A472J CHIP R 4 7K J 1 10W R652 653 RK73GB2A432J CHIP R 4 3K J 1 10W R656 RK73GB2A392J CHIP R 3 9K J 1 10W R658 RK73GB2A473J CHIP R 47K J 1 10W R659 RK73GB2A562J CHIP R 5 6K J 1 10W R660 RK73GB2A473J CHIP R...

Page 13: ...SS133 DIODE D617 B30 1770 05 LED BLUE D624 1SS133 DIODE D699 1SS133 DIODE IC1 2 BA4560RF ANALOGUE IC IC5 TL494IDR ANALOGUE IC IC6 8 BA4560RF ANALOGUE IC IC10 12 BA4560RF ANALOGUE IC Q1 2SC4883ANF TRANSISTOR Q2 2SA1859ANF TRANSISTOR Q3 8 STP60NF06FP FET Q9 2SC4097 TRANSISTOR Q10 11 2SA1577 TRANSISTOR Q12 2SC4097 TRANSISTOR Q13 14 DTA114EUA DIGITAL TRANSISTOR Q15 2SC4081 TRANSISTOR Q16 2SC1845 A F E...

Page 14: ...D 350 59 238 mm 13 3 4 2 5 16 9 3 8 inch Weight 3 2 kg 7 0 lbs KENWOOD follows a policy of continuous advancements in development For this reason specifications may be changed without notice KAC 7204 M type Audio Section Max Power Output 1000 W 500 W 2 Rated Power Output B 14 4 V Normal 4 Ω 20 Hz 20 kHz 0 08 THD 170 W 2 Normal 2 Ω 1 kHz 0 8 THD 250 W 2 Bridged 4 Ω 1 kHz 0 8 THD 500 W 1 Frequency R...

Page 15: ... H OFF L HPF 4 5V SW14V 15V L 10 9 2 1 L R R SP R SP L TH GND LED B SP L BB G L NF B B B B B E L L W13 W331 W332 W428 W151 W154 W427 W136 W181 W79 W152 W155 W157 W402 W426 W430 W97 W141 W142 W5 W400 W55 L3 W73 W404 W59 W70 W431 C223 W63 W403 W127 W196 W192 R697 W164 W145 W191 W405 W401 W69 W406 W407 W408 W409 W413 W410 W411 W412 W414 W415 W416 W417 W418 W419 W420 W421 W422 W423 W424 W199 W15 W27 W...

Page 16: ... 2K TP50 R633 6 2K C617 0 01 R632 12K TP49 R635 10K R631 12K TP44 C610 0 01 100P R105 10K 0 01 GND B 1 2 B 2 GND 1 RR 2 1 RR 4 3 RL 6 5 8 7 RL 10 9 100K 10u50 2 2K R121 C620 0 01 FR 2 R217 R241 10K 150 R215 R239 150 4 7K 33 R251 4 7K 100K 10u50 2 2K R120 FL TP12 FR TP14 R128 C111 C112 10u50 R129 100K 4 8 TP11 FL TP13 10u50 C110 100K R127 10 C109 R122 TP18 1000P C124 TP6 0 01 TP8 R102 1K C102 1000P...

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