Kenwood KAC-210-D, KAC-210-MR Service manual

MARINE POWER AMPLIFIER

KAC-210D KAC-210MR

SERVICE MANUAL

Metallic cabinet (A01-2867-02) : KAC-210MR (A01-2880-02) : KAC-210D

KAC-210D

KAC-210MR

KAC-210MR only

Cord with connector (E30-6459-05)

KAC-210D

KAC-210MR

Fuse (F52-0004-05)

REMOTE

LINE IN

MAXIMUM

LINE IN

MAXIMUM

Cord with connector (E30-6460-05)

POWER SPEAKER INPUT

POWER

SUB WOOFER OUTPUT

Mounting hardware (J22-0054-14)

X2

Screw set (N99-1753-05)

This product uses Lead Free solder.

2

IC1

LINE IN

R

J1

L

SP IN

R

J101

L

IC2

IC4

IC6

L.P.F.

IC3ALC

IC5

IC5 IC103

Q101

IC101

FET

Q101

FET

Q102

Q104

FET

Q103

L.P.F.

IC102

FET DRIVER

DC PROTECT.

B.U, ACC DET.

IC101

J102

J101

AVR

Q107

AVR

Q105

IC6

MINI DIN(J2)

AVR

LPF FREQ. SELCTOR

(50,80,100,150Hz)

(0,180 )

+B

ACC

B.U

P-CON

+B

12V

VCC

1/2VCC

12V

9V

TEMP. DET.

VOLUME CONTROL

PHASE SELECTOR

LPF AMP

REMOTE CONTROL UNIT

ISOLAION AMP

VOLUME

GAIN AMP PHASE SEL.

MUTE

PWER AMP

CHOPP. OSC

CONTROL CIRCUIT

OVV. PROTECTION

OC.PROTECT.

SUBWOOFER OUTPUT

POWER INPUT

KA C-210D/210MR

BLOCK DIAGRAM

KA C-210D/21 0MR

COMPONENTS DESCRIPTION

● AUDIO UNIT (X09-5800-xx)

Ref No. Application / Functions Operation / Condition / Compatibility

IC1 Line input isolation amp 9V AVR operation (center voltage 4.9V) IC2 Speaker input isolation amp 9V AVR operation (center voltage 4.9V) IC3 LPF frequency selector Select for 50, 80, 100, 150Hz (Default 150Hz) IC4 Volume control Electric volume (VCA) IC5 LPF, phase selector LPF (-12db/oct.) Phase 0°/180° IC6 1/2 VCC output OP amp Center voltage 4.9V IC101 Chopping wave generator & protection control Clock 140kHz, protection time (2sec for Power on) IC103 Power amp first stage, NF circuit 9V AVR operation (center voltage 4.9V) IC201 D class amp driver PWM digital converter, FET driver IC IC202 Clipper circuit 9V AVR operation (center voltage 4.9V) Q1 Phase selector Switching for phase 0°and 180° Q101~104 Power FET D class AMP final FET Q105 9V AVR Use for OP amp Q107,108 P-CON control When P-CON line more than 8.7V, this circuit is active (ON) Q109 Over load voltage detector When ACC line more than 18.2V, this circuit is active (OFF) Q110 Muting transistor Muting for PWM driver when Power is on Q111,112 Protection detector Feed back for protection data (latch operation) Q113 DC protection detector DC voltage sensibility is ±5V Q114 LED control LED light up when Power is ON Q115 LED control LED light off when protection circuit ON Q116 12V AVR control 12V AVR feedback transistor Q118 Temperature & voltage detector Protection function Q119 Power supply voltage detector Detect for Power off condition Q120 Discharge transistor (for C148 when Power is off) Malfunction for LED light up

3

A B C D E

6

C128

C

R

C

0

KAC-210D/21 0MR

1

PC BOARD (FOIL SIDE VIEW)

AUDIO UNIT X09-5800-xx (J76-0018-12)

W30

R105

R109

BE

R107

BE

R110

10

1

W29

W31

BE

R153

C125

W126

R134

R133

W127

C126 R154

C123

W28

Q119

R179

BE

R178

R181

R183

Q12

BE

R165

R182

R22

R166

EB

Q107

D11

R106

R108

D105

C21

Q108

C149

R168

C4

D6

R16

R15

R21

R173

W136

D119

D120

2

R174

C121

R114 R112 R115

D111

C155

D108

W132

W33

11

IC201

D110

R175

D121

D122

R176

W135

3

SDG SDG SDG

W46

Q102

C124

W45

R148

C132

Q101

SDG

W51

R177

4

R162

L102

W50

W47

W49

Q104

W39

W43

R149

W40

C133

Q103

TH102

W37

W38

C110

L103

Q118

C122

BE

R152

C127

R116

R113

R117

R155

R157

R156

W36

W34

W35

20

R180

W32

W131

D109

W130

D123

W137

R171

C109

W129

P2

C148

L101

R169

C108

Q109

D118

R118

W138

Q114

Q115

BE

W128

Q116

D104

C143

5

C218

C137

C217

C144

6

W48

R150

P1

C136

C145

C147

W44

W42 W41

C111

D115

L106

C219

W139

L105

D106

J1

106

W133 W134

51

C146

J102

314

2

J101

L

7

PRE OUT

POWER/SPEAKER INPUTSUB WOOFER

LINE IN

4