Kenwood KAC-5203 User manual

© 2007-1 PRINTED IN JAPAN
B53-0495-00 (N)955
POWER AMPLIFIER
KAC-5203
SERVICE MANUAL
Screw washer
(N09-4215-08)
Panel
(A64-4134-02)
Screw set
(N99-1587-05)
Accessory
(W01-1607-05)
Fuse (25A)
(F52-0014-05)
Rear panel
(A84-0463-02)
Connecting cord assy
(E30-6145-05)
This product uses Lead Free solder.

KAC-5203
2
BLOCK DIAGRAM
INPUT SENSE
ISOLATION
AMPLIFIER
IC1,2 VR1
SHOCK NOISE MUTE
Q610-614
DC DETECT &
OVER CURRENT PROTECTION
Q606-609,617-621
(+6dB)
IC3
LPF
80Hz 12dB/OCT
INPUT SENSE
AMPLIFIER
ISOLATION
IC1,2 VR1
LINE IN
Lch
LINE IN
Rch
IN
SPEAKER
IC3
Q615,616
MUTE
Q217,219
AMPLIFIER
POWER
Q218,220
J1
J2
J3
Rch
SPEAKER OUT
SPEAKER OUT
Lch
DC-DC CONVERTER
L1
15V AVR
D8,9
THERMAL PROTECTION
TH1
Q602
Q3
OVER VOLTAGE PROTECTION
P. CON CIRCUIT P. CON
BATT.
POWER
AMPLIFIER
+11dB 0dB 27dB

KAC-5203
3
●AUDIO UNIT (X09-8612-70)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1,2 Input Isolation AMP
IC3 Pin 1-3: LPF, Pin 5-7: Inverter
IC4 DC-DC Comparator
IC5 Attenuator Driver
Q3-6 FET Driver
Q7,8 For DC-DC Comparator
Q201~204 Difference AMP 1st Stage
Q205,206 Current Mirror
Q207~210 Difference AMP 2nd Stage
Q211,212 Temperature Compensation
Q213~216 Darlington 1st Stage
Q217~220 Final Stage
Q601 Voltage Supply
Q602 Over-voltage Protection
Q603 P.CON
Q604,605 Mute Driver
Q606~609 DC Protection
Q610~614 Shock Noise Mute When turning power ON/OFF, the protection functions.
Q615,616 Mute
Q617~621 Over-current DET
Q622,623 Attenuator
D1 BATT Reverse Connection Protection
D2,3 IC4 Reverse BreakdownVoltage Protection
D4 Mute Driver
D6,7 DC-DC Rectifier
D8,9 15V AVR
D101~104 Static Electricity Countermeasure
D201,202 Difference AMP 2nd Stage
D203,204 Current Mirror
D601 Voltage Supply
D602 Over-voltage DET
D603 Voltage Supply
D604 Shock Noise Mute When turning power ON/OFF, the protection functions.
D605,606 Mute Driver
D607 LED Control
D609,610 DC Protection
D611~613 Shock Noise Mute When turning power ON/OFF, the protection functions.
D614~617 Over-current DET
D650 P.CON-ON DET When P.CON is ON, the LED lights.
When DC protection functions, the LED goes out.
COMPONENTS DESCRIPTION

KAC-5203
4
ABCDE
1
2
3
4
5
6
7
PC BOARD (FOIL SIDEVIEW)
IC4
IC5
AUDIO UNIT X09-8612-70 (J76-0349-11)
W901
W900
W76
W63
C2
C1
C3
W84
C5 C7
C9
C10
C221
C601
C602
C605
C607
C614
C615
C616
W71
R21
SDG SDG
R22
R233
BE
BE
BE
BE
BE
BE
BE
BE
E
BE
BE
BE
BE
R236
R237
W
2
W35
W47
W52
W44
W42
W48
W69
W67
W41
W53
W74
W73
W39
W25
W86
W64
W62
W
2
W43
W
W32
W81
W36
W37
W29
W31
W40
W30
W45
W80
W34
W82
W54
W55
W56
W57
W58
W59
W60
W61
W72
W70
W68
W75
12 3 4 5 6 7
W66
W49
W46
W50
W51
W77
W79
W85
W33
W38
W78
C11
C12
L1
L2
R24
C8
W143
W161
R203
R204
R615
R616
C6
C
C205
C206
C209
C210
C211
C212
C21
C214
C215
C216
C218
C603
C604
C606
C608
C610
C612
C619
R663
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R205
R206
R207
R208
R209
R210
R211
R212
R213
R214
R215
R216
R217
R218
R219
R222
R223
R2
2
EB
B
R226
R228
R229
R232
R238
R251
R252
R253
R254
R601
R602
R603
R604
R605
R606
R607
R608
R609
R610
R611
R612
R613
R617
R618 R619
R620
R621
R622
R623
R624
R625
R626
R627
R628
R629
R630
R631
R632
R633
R642
R644
R646
R648
R650
R651
R652
R653
R654
R655
R656
TH1
W160
W159
W154
W155
W127
W150
W152
W141
W142
W149
W151
W147
W140
W158
W153
W157
W163
W164
W144
W
W124
W126
W133
W1
2
W128
W129
W132
W130
W134
W145
W136
W137
W138
C219
W139
W131
W123
R65
9
R660
R661
C220
C618
W135
R665
R666
R667
R664
W156
W162
W148
R657
41
58
18
916
BE BE BE
BE
BE
B
EB
E
BE
BE BE BE BE
BE BE
BEBE
BEBE
BE
BE BE
BE BE
BE
CN1
Q601
D2
D3
D4
D201
D202
D2
D204
D603
D605
D606
D607
D610
D611
D614
P1
Q205
Q206
Q207
Q208
Q209
Q210
Q213
Q610
Q617
Q619
Q216
D650
D1 D6 D7
J3
Q7
Q8
Q211
Q212
Q217
Q220
Q3
Q6
D601
D602
D604
D609
D613
D616
Q4
Q5
Q201
Q202
Q203
Q204
Q602
Q603
Q604
Q605
Q606
Q607
Q608
Q609
Q611
Q612 Q613
Q614
Q621
Q622
Q623

KAC-5203
5
JIHGF
1
2
3
4
5
6
7
X09-8612-70
Ref.No. Address
IC1 3F
IC2 4G
IC3 5G
IC4 5D
IC5 6D
Q3 5C
Q4 4C
Q5 4C
Q6 5C
Q7 2C
Q8 2C
Q201 4E
Q202 4E
Q203 4E
Q204 4E
Q205 3E
Q206 5E
Q207 4E
Q208 5E
Q209 4F
Q210 5E
Q211 2F
Q212 6E
Q213 3E
Q214 6F
Q215 3G
Q216 6E
IC1
IC2
IC3
W7
W6
C13
W84
C14
C103
C104
C149
C151
C152
C153
C154
C201
C202
C207
C208
C304
C307
C308
C309
C310
C609
BE
B
BE
B
EB
E
BE
B
BE
BE
1 2
9
10
R234
R235
W12
W27
W10
W25
W19
W24
W21
W16
W26
W11
W23
W32
W15
W17
W9
W2
W3
W1
W4
W5
W8
W20
2
9
W22
W28
W31
W18
W14
W30
W82
W13
C617
W83
R23
R24
VR1
R306
W165 C107
C115
C303
R634
C101 C102
C105
C106
C108
C109
C110
C111
C112
C113
C114
C116
C119
C203
C204
C213
C
214
C215
1
6
C217
C218
C301
C302
C305
C306
C610
C611
C612
C613
R663
R101
R102
R103 R104
R105
R106
R107 R108
R109
R110
R111
R112
R113
R114
R115
R116
R117
R118
R119
R120
R121
R122
R123
R124
R149
R151 R152
R153
R154
R155
R156
R201
R202
R205
R209
R211
215
2
17
R219
R220
R221
R222
R223
R224
R225
EB
BE
R226
R227
R228
9
R230
R231
R238
R239
R301
R302
R303
R304
R305
W102
R307R308
R309
R310
R311
R635
R636
R637
R638
R639
R640
R641
R642
R643
R644
R645
R647
R649
W104
W106
W113
W118
W115
W114
W107
W109
W111
W112
W110
W117
W116 W103
W121
W124
W126
W125
W108
W122
R658
W120
W119
W123
W101
W105
R659
R660
R661
C130
R130
C131
R131
W135
R662
W156
W162
W146
85
14
85
14
41
58
BE BE
BE
BE
BE
CN2
D203
D617
2
05
Q207
Q209
Q214
Q215
Q618
Q620
J1
J2
Q211
Q212
Q218
Q219
0
S1
OFF-LPF
D8
D101
D9
D102
D103
D104
D612
D613
D615
D616
Q201
0
2
Q615
Q616
Q622
Q623
Ref. No. Address
Q217 2E
Q218 6G
Q219 2F
Q220 6E
Q601 6C
Q602 6B
Q603 6B
Q604 6C
Q605 6D
Q606 6C
Q607 7C
Q608 6C
Q609 7C
Q610 6D
Q611 7C
Q612 7D
Q613 7D
Q614 7D
Q615 5F
Q616 5F
Q617 3E
Q618 3F
Q619 6E
Q620 6F
Q621 6D
Q622 4F
Q623 4E
Refer to the schematic diagram for the values of
resistors and capacitors.

KAC-5203
6
ABCDE
1
2
3
4
5
6
7
3.41V
15V
28.5V
15V
-28.5V
-15V
-15V
+B
15V
+15V
+15V
AUDIO UNIT (X09-8612-70)
D102
D101
D6
D7
Q616
Q615
Q202
Q2
0
Q
2
Q203
Q204
Q201
Q612
Q611
Q613
Q614
S1 Q622
Q623
D104
D103
IC1
(1/2)
(2/2)
IC1
(1/2)
IC2
(2/2)
IC2
(2/2)
IC5
(1/2)
IC5
(1/2)
IC3
IC3
(2/2)
D8D9
D611
D
D
R
J1
L
J2
DIFFERENCE AMP
2ND STAGE
1st STAGE
DIFFERENCE AMP
MUTE
ATTENUATOR
PIN 1-3 : LPF,
PIN 5-7 : INVERTER
ATTENUATOR
DRIVER
INPUT ISOLATION
AMP
INPUT ISOLATION
AMP
SHOCK NOI
S
MUTE
LPF/OFF
(6dB UP) LPF : 80Hz 12dB/OCT
SP IN
INPUT
SENSE
SIGNAL LINE
B LINE
B LINE
GND LINE
VR1 10K
TP101TP102
TP103
TP104
TP105
TP106
TP107
TP108
TP100
TP115
TP151
TP152
TP153
TP154
TP302
TP303
TP301
TP201
TP202
TP207
TP205
TP206
T
TP627
TP628
TP618
TP620
TP621
TP623
TP624
TP625
TP626
TP116
TP304
TP111
TP112
TP113
TP114
TP622
TP109
TP110
TP208
TP305
TP29TP30TP31
TP32TP33TP34
TP63
5
TP155
TP156
TP157
TP158
R+
L+
L-
R-
1mA
L+R
8
3
21
5
67
34
82 1
283 1
4
6
57
1K
R101
11
R131
1000P
C131
1000P
C101
1000P
C130
10
R130
10K
R103
4.7K
R105
15P
C105
12K
R109
10K
R107
0.01
C107
3.9K
R111 3.9K R117
47P
C109
22K
15P
C111
0.01
C115
R123 22K
C113 47P
3.9K
R119
120
R115
3.9K
R113
1K
R149
1000P
C149
1K
R102
1000P
C102
10K
R104
10u50
C104
10u50
C103
4.7K
R106
15P
C106
10K
R108
12K
R110
0.01
C108
3.9K
R112
0.1
C119
3.9K
R114
120
R116
3.9K
R120
C114 47P
R124 22K
C110 47P
3.9K
R118
R122 22K
15P
C112
0.01
C116
47u25
C13
2200u35
C11
47u25
C14
2200u35
C12
2W
820
R23
2W
820
R24
1000P
C10
1/2W
10
R22
1000P
C9
1/2W
10
R21
47
R632
6.8K
R630
47
R633
6.8K
R631
10K
R629
33K
R627
10K
R628
33K
R626
5.6K
R624
0.1
C608
4
R
6
47K
R625
10K
R667
3.3K
R666
10K
R665
R664 150K
10K
R663
4.7K
R662
10u50
C617
0.01
C618
0.01
C619
2.2K
R151
2.2K
R152
39K
R153
39K
R155
39K
R156
39K
R154
10u50
C151
10u50
C153
10u50
C154
10u50
C152
10u50
C308
10u50
C309
10u50
C304
47K
R310
33K
R301
47K
R309
33K
R302
27K
R303
0.1
C301
0.1
C302
10K
R304
10K
R305
0.01
C303
47K
R306
3.3K
R636
15K
R658
10K
R660
10K
R661
150K
R634100K
R635
4.7u50
C609
10K
R637
10K
R638
100K
R641
100K
R640
10u50
C201
470P
C203
47K
R201
47P
C219
2.7K
R205
100
R209
2.7K
R207
4700P
C205
15K
R203
6P
C20
9
47K
R25
1
2.2K
R25322u50
C207
100P
C211
470P
C204
47K
R202
2.7K
R206
100
R210
4700P
C206
2.7K
R208
100P
C212
47K
R25
2
6P
C21
0
15K
R204
47P
C220
2.2K
R254 22u50
C208
10u50
C202
10u50
C307
10u50
C310
15K
R659
3.3K
R639
0.01
C306
R308 10K
47P
C305
10K
R307
47K
R311
4 5
6
1
3
2
78
109
87
65
43
21
4
5
67
8
3
21
4
6
57
Q207-210
Q201-204
Q610-614
Q622,623
R121
+B
+B
+15V
-15V
-B -15V
+15V
+15V
-15V
+15V
-B +B
-15V
+15V
-B
+15V +B
-B
+B
-15V
+15V
+
++
+
+
+
++
+
+
+
+
+
+
+
+
+
+ +
+ +
X09-8612-70 (1/2)
B
C
E
B
EC
2SA817A-F
2SA992-A
2SC1627A-F
2SC1845-A 2SA1576A 2SC3419 2SC4081

KAC-5203
7
JIHGF
1
2
3
4
5
6
7
5V
14.4V
+B
1
5V
14V
IC4
KAC-5203
Q8
Q601
Q609
Q5
Q4
Q607
Q6
Q602
Q608 Q604
Q7
Q3
Q603
P1
Q605
Q606
Q208
Q617
Q207
Q619
Q618
Q205
Q209
Q621
D616
D615
Q210
Q620
D612
Q206
D613
1
2
1
1Q610
Q213
Q214
Q215
Q216
Q211
Q212
Q217
Q218
Q220
Q219
IC1-3,5 : BA4560RF
IC4 : TL494IDR
Q3,6 : 2SC4097
Q4,5 : 2SA1577
Q7,8 : STP60NF06FP
Q201-204,605,606,612,614
:2SA1576A(R,S)
Q205,206,618,619
:2SA992-A(F,E)
Q207-210,610,617,620
:2SC1845-A(F,E)
Q211,212 : 2SC3419(Y)-F
Q213,214 : 2SC1627A-F
Q215,216 : 2SA817A-F
Q217,218 : 2SC4468NF
Q219,220 : 2SA1695NF
Q601 : 2SB1241
Q602-604,607-609,611,
613,615,616,621-623
:2SC4081
D1 : RM4ZLF-J4NF
D2-4,201-204,603,605-607,
610,611,614,617
:1SS133
D6 : FCH10A20
D7 : FRH10A20
D8,9,602 : UDZS15B
D101,612 : LM1MA142WK-G
D102,613,615,616
:LM1MA142WA-G
D103,104,601 : UDZS6.8B
D604,609 : UDZS10B
D650 : B30-1710-05
D611
D610
D650
D609
D606
D607
D605
D604
D601
D602
D1
D2
D3
D4
D614
D203
D201
D202
D204
D617
SP OUT
J3
DC PROTECTION
MUTE
DRIVER
FET
DRIVER
for DC-DC
COMPARATOR DC-DC COMPARATOR
VOLTAGE
SUPPLY
P.CON
OVER VOLTAGE
PROTECTION
DARLINGTON
1st STAGE
FINAL
STAGE
TEMPERATURE
COMPENSATION
CURRENT
MIRROR
P
HOCK NOISE
M
UTE
OVER
DET
CURRENT
D603
0
2
T
P207
TP211
TP212
TP1
TP3
TP2
TP5
TP6
TP632
TP7
TP8TP9
TP17
TP18
TP19
TP20
TP15
TP16
TP21
TP22
TP23
TP24
TP25
TP26
TP602
TP604
TP605
TP606
TP608
TP614
TP612
TP615
TP613
TP631
TP633
TP618
P
620
1
TP629
TP630
TP601
TP214
2
TP213
T
P208
TP215
TP216
TP217
TP218
TP28
TP27
L2
TP634
TP635 NORMAL
+DC
-DC
DC
A-MUTE
55W/4
65W/2
1mA
2mA
150W/4 BTL
L1
1000P
C10
1/2W
10
R22
1000P
C9
1/2W
10
R21
4.7K
R19
4.7K
R20
56
R18
56
R17
56
R15
56
R16
1.5K
R14
1.5K
R13
2200u16
C8
10K
R11 2.2u50
C7
1M
R10
10K
R9
470
R7
10K
R8
R6 4.7K
C6 0.01
R4 100K
47u25
C5
2.2K
R5
10K
R12
10u50
C2
R3 22K
C3 1000P
R2 10K
R1 1K
TH1
3.6K
R605 3.6K R601
30K
R604
3.9K
R602
3.9K
R603
1.5K
R606
3.3K
R607
10u50
C1
10u50
C601
0.01
12K
R620
12K
R619
10K
R6172.2K
R618
0.01
C604 C603 0.01
2.2K
R616
1.2K
R615
33K
R612
10K
R613
10K
R611
4.7K
R610
33K
R609
2.2K
R608
5.6K
R621
100u10
C605
1K
R657
5.6K
R624
0.1
C608
47K
R623
100
R622
33u35
C607
47K
R625
6P
C209
47K
R251
2.2K
R25322u50
220
R211
15K
R215
220
R213
C213 3P
100P
C211
330
R217
1.5K
R219
47
R238
470
R221
47
R223
1.2K
R642
1000P
C610
1.2K
R643
1000P
C611
47
R225
4.7
R229
1K
R646
560
R227
2W
0.1
R233
2W
0.1
R235
1K
R647
4.7
R231
220u35
C221
10
R237
47P
C215
10
R655
0.047
C615
47K
R653
47K
R654
47K
R652
10
R656
0.047
C616
4.7
R232
1K
R648
1.2K
R644
1000P
C612
1.2K
R645
1000P
C613
560
R228
1K
R649
4.7
R230
2W
0.1
R234
2W
0.1
R236
12K
R650
100u10
C614
10K
R651
47
R226
47
R224
470
R222
47
R239
1.5K
R220
0.01
C218
220
R214
330
R218
100P C212
47P
C216
3P
C214
15K
R216
220
R212
47K
R252
6P
C210
2.2K
R254 22u50
GND
BATT
P-CON
LCH-
LCH+
RCH-
RCH+
5
6
7
3
4
1
2
1
2
3
4
5
6
7
8
IN1+
IN1-
FBACK
DTC
CT
RT
GND
C1
16
15
14
13
12
11
10
9
IN2+
IN2-
REF
OUTCTRL
VCC
C2
E2
E1
10u50
+
C602
Q606-609
Q3-6Q7,8
Q213-216
Q217-220
Q211,212
Q205,206
Q617-621
6
10-614
C217 0.01
C606
Q604,605
+B
-B
-B
-B
+B
5V
10 : 5
: OFF
(F52-0014-05) F1 (25A)
++
+
+
+
+
+
+
+
+
CAUTION : For continued safety, replace safety critical components only with
manufacturer’s recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock,
leakage-current or resistance measurements shall be carried out (exposed
parts are acceptably insulated from the supply circuit) before the appliance
is returned to the customer.
X09-8612-70 (2/2)
•DC voltages are as measured with a high imped-
ance voltmeter. Values may vary slightly due to
variations between individual instruments or/and
units.

KAC-5203
8Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW
3
2
1
BA
(X09-8612-70) J3
J1
J2
(Insulated sheet is contained
in transistor)
Ax3
Ex7
Ax7 Bx3
Cx3
Cx2
Dx2
706
702
F1
4
1
9
8
DC1
3
B
C
C
C
C
C
C
(X09)
(X09)
(X09)
C
C
711
A
B
C
D
E
:
:
:
:
:
N09-6365-05
N80-3010-43
N89-3008-48
N09-6447-05
N09-4215-08
φ2.6x13
φ3x10

KAC-5203
9
Indicates safety critical components.
✽New parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
Ref. No. A
d
dN
e
wParts No. Description Desti-
nation Ref. No. A
d
dN
e
wParts No. Description Desti-
nation
E : Europe K: North America M: Other Areas W :Without Europe
PARTS LIST
11B ✽ A21-6586-03 DRESSING PANEL KE1
11B
✽ A21-6587-03 DRESSING PANEL M1
32A
✽ A64-4134-02 PANEL
42B
✽ A84-0463-02 REAR PANEL
-
✽ B64-3531-00 INST.MANUAL (ENG.FRE.SPA.) KE1
-
✽ B64-3532-00 INST. MANUAL (GER.DUT.ITA.POR.) E1
-
✽ B64-3533-00 INST.MANUAL (ENG.T-CHI.S-CHI.) M1
DC1 1A E30-6145-05 CONNECTING CORD ASSY
F1 3B F52-0014-05 FUSE (BLADE TYPE) (25A)
-
✽ H54-3981-03 ITEM CARTON CASE KE1
-
✽ H54-3983-03 ITEM CARTON CASE M1
81AN99-1587-05 SCREW SET
A2BN09-6365-05
SEMS (TAPTITE SCREW) (2.6X13)
B3BN80-3010-43 PAN HEADTAPTITE SCREW
C3BN89-3008-48
BINDING HEAD TAPTITE SCREW
E2BN09-4215-08 SCREW WASHER
91AW01-1607-05 ACCESSORY
D650 B30-1710-05 LED (RED)
C1 CD04AU1H100M NP-ELEC 10UF 50WV
C2 CD04BJ1H100M ELECTRO 10UF 50WV
C3 CQ93FMG1H102J MYLAR 1000PF J
C5 CD04BJ1E470M ELECTRO 47UF 25WV
C6 CK73GB1H103K CHIP C 0.010UF K
C7 CD04AU1H2R2M NP-ELEC 2.2UF 50WV
C8 CD04AZ1C222M ELECTRO 2200UF 16WV
C9,10 CK45FB1H102K CERAMIC 1000PF K
C11,12 CD04AZ1V222M ELECTRO 2200UF 35WV
C13,14 CD04BJ1E470M ELECTRO 47UF 25WV
C101,102 CK73GB1H102K CHIP C 1000PF K
C103,104 CD04BJ1H100M ELECTRO 10UF 50WV
C105,106 CC73GCH1H150J CHIP C 15PF J
C107,108 CK73GB1H103K CHIP C 0.010UF K
C109,110 CC73GCH1H470J CHIP C 47PF J
C111,112 CC73GCH1H150J CHIP C 15PF J
C113,114 CC73GCH1H470J CHIP C 47PF J
C115,116 CK73GB1H103K CHIP C 0.010UF K
C119 CK73GB1H104K CHIP C 0.10UF K
C130,131 CK73GB1H102K CHIP C 1000PF K
C149 CK45FB1H102K CERAMIC 1000PF K
C151-154 CD04BJ1H100M ELECTRO 10UF 50WV
C201,202 CD04BJ1H100M ELECTRO 10UF 50WV
C203,204 CC73GCH1H471J CHIP C 470PF J
C205,206 CK73GB1H472K CHIP C 4700PF K
C207,208 CD04BJ1E470M ELECTRO 47UF 25WV
C209,210 CC73GCH1H060D CHIP C 6.0PF D
C211,212 CC73GCH1H101J CHIP C 100PF J
C213,214 CC73GCH1H030C CHIP C 3.0PF C
C215,216 CC73GCH1H470J CHIP C 47PF J
C217,218 CK73GB1H103K CHIP C 0.010UF K
C219,220 CC73GCH1H470J CHIP C 47PF J
C221 CD04BJ1V221M ELECTRO 220UF 35WV
C301,302 CK73GB1H104K CHIP C 0.10UF K
C303 CK73GB1H103K CHIP C 0.010UF K
C304 CD04BJ1H100M ELECTRO 10UF 50WV
C305 CC73GCH1H470J CHIP C 47PF J
C306 CK73GB1H103K CHIP C 0.010UF K
C307-310 CD04BJ1H100M ELECTRO 10UF 50WV
C601,602 CD04BJ1H100M ELECTRO 10UF 50WV
C603,604 CK73GB1H103K CHIP C 0.010UF K
C605 CD04BJ1A101M ELECTRO 100UF 10WV
C606 CK73GB1H103K CHIP C 0.010UF K
C607 CD04BJ1V330M ELECTRO 33UF 35WV
C608 CK73GB1H104K CHIP C 0.10UF K
C609 CD04BJ1H4R7M ELECTRO 4.7UF 50WV
C610-613 CK73GB1H102K CHIP C 1000PF K
C614 CD04BJ1A101M ELECTRO 100UF 10WV
C615,616 CQ93FMG1H473J MYLAR 0.047UF J
C617 CD04BJ1H100M ELECTRO 10UF 50WV
C618,619 CK73GB1H103K CHIP C 0.010UF K
J1 2B E63-0938-05 PIN JACK
J2 2A E58-1031-05 RECTANGULAR RECEPTACLE
J3 2B E70-0830-25 SCREW TERMINAL BOARD
L1
✽ L33-2412-05 CHOKE COIL
L2
✽ L19-0808-05 TRANSFORMER FOR CONVERTER
D2BN09-6447-05 TAPTITE SCREW (3X10)
R1 RK73GB2A102J CHIP R 1.0K J 1/10W
R2 RK73GB2A103J CHIP R 10K J 1/10W
R3 RK73GB2A223J CHIP R 22K J 1/10W
R4 RK73GB2A104J CHIP R 100K J 1/10W
R5 RK73GB2A222J CHIP R 2.2K J 1/10W
R6 RK73GB2A472J CHIP R 4.7K J 1/10W
R7 RK73GB2A471J CHIP R 470 J 1/10W
R8,9 RK73GB2A103J CHIP R 10K J 1/10W
R10 RK73GB2A105J CHIP R 1.0M J 1/10W
R11,12 RK73GB2A103J CHIP R 10K J 1/10W
R13,14 RK73GB2A152J CHIP R 1.5K J 1/10W
R15-18 RK73GB2A560J CHIP R 56 J 1/10W
R19,20 RK73GB2A472J CHIP R 4.7K J 1/10W
R21,22 RD14DB2H100J SMALL-RD 10 J 1/2W
R23,24 RS14KB3D821J
FL-PROOF RS 820 J 2W
R101,102 RK73EB2E102J CHIP R 1.0K J 1/4W
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
R111-114 RK73GH2A392D CHIP R 3.9K D 1/10W
R115,116 RK73GB2A121J CHIP R 120 J 1/10W
R117-120 RK73GH2A392D CHIP R 3.9K D 1/10W
R121-124 RK73GH2A223D CHIP R 22K D 1/10W
R130 RK73GB2A100J CHIP R 10 J 1/10W
KAC-5203
AUDIO UNIT (X09-8612-70)

KAC-5203
10
Indicates safety critical components.
Ref. No. A
d
dN
e
wParts No. Description Desti-
nation Ref. No. A
d
dN
e
wParts No. Description Desti-
nation
E : Europe K: North America M: Other Areas W :Without Europe
PARTS LIST
R131 RK73GB2A110J CHIP R 11 J 1/10W
R149 RK73EB2E102J CHIP R 1.0K J 1/4W
R151,152 RK73EB2E222J CHIP R 2.2K J 1/4W
R153-156
✽ RK73EB2E393J CHIP R 39K J 1/4W
R201,202 RK73GB2A473J CHIP R 47K J 1/10W
R203,204 RK73GB2A153J CHIP R 15K J 1/10W
R205-208 RK73GB2A272J CHIP R 2.7K J 1/10W
R209,210 RK73GB2A101J CHIP R 100 J 1/10W
R211-214 RK73GB2A221J CHIP R 220 J 1/10W
R215,216 RK73EB2E153J CHIP R 15K J 1/4W
R217,218 RK73GB2A331J CHIP R 330 J 1/10W
R219,220 RK73GB2A152J CHIP R 1.5K J 1/10W
R221,222 RK73GB2A471J CHIP R 470 J 1/10W
R223-226 RK73FB2B470J CHIP R 47 J 1/8W
R227,228 RK73EB2E561J CHIP R 560 J 1/4W
R229-232 RK73EB2E4R7J CHIP R 4.7 J 1/4W
R233-236 R92-0205-05
METAL-PLATE 0.1 K 2W
R237 RD14NB2E100J RD 10 J 1/4W
R238,239 RK73GB2A470J CHIP R 47 J 1/10W
R251,252 RK73FB2B473J CHIP R 47K J 1/8W
R253,254 RK73GB2A222J CHIP R 2.2K J 1/10W
R301,302 RK73GB2A333J CHIP R 33K J 1/10W
R303 RK73GB2A273J CHIP R 27K J 1/10W
R304,305 RK73GB2A103J CHIP R 10K J 1/10W
R306 RK73GB2A473J CHIP R 47K J 1/10W
R307,308 RK73GB2A103J CHIP R 10K J 1/10W
R309-311 RK73GB2A473J CHIP R 47K J 1/10W
R601 RK73GB2A362J CHIP R 3.6K J 1/10W
R602,603 RK73EB2E392J CHIP R 3.9K J 1/4W
R604 RK73GB2A303J CHIP R 30K J 1/10W
R605 RK73GB2A362J CHIP R 3.6K J 1/10W
R606 RK73GB2A152J CHIP R 1.5K J 1/10W
R607 RK73GB2A332J CHIP R 3.3K J 1/10W
R608 RK73EB2E222J CHIP R 2.2K J 1/4W
R609 RK73GB2A333J CHIP R 33K J 1/10W
R610 RK73GB2A472J CHIP R 4.7K J 1/10W
R611 RK73GB2A103J CHIP R 10K J 1/10W
R612 RK73GB2A333J CHIP R 33K J 1/10W
R613 RK73GB2A103J CHIP R 10K J 1/10W
R615 RK73EB2E122J CHIP R 1.2K J 1/4W
R616 RK73EB2E222J CHIP R 2.2K J 1/4W
R617 RK73GB2A103J CHIP R 10K J 1/10W
R618 RK73GB2A222J CHIP R 2.2K J 1/10W
R619,620 RK73GB2A123J CHIP R 12K J 1/10W
R621 RK73GB2A562J CHIP R 5.6K J 1/10W
R622 RK73EB2E101J CHIP R 100 J 1/4W
R623 RK73GB2A473J CHIP R 47K J 1/10W
R624 RK73GB2A562J CHIP R 5.6K J 1/10W
R625 RK73GB2A473J CHIP R 47K J 1/10W
R626,627 RK73GB2A333J CHIP R 33K J 1/10W
R628,629 RK73GB2A103J CHIP R 10K J 1/10W
R630,631 RK73GB2A682J CHIP R 6.8K J 1/10W
R632,633 RK73GB2A220J CHIP R 22 J 1/10W
R634 RK73GB2A154J CHIP R 150K J 1/10W
R635 RK73GB2A104J CHIP R 100K J 1/10W
R636 RK73GB2A332J CHIP R 3.3K J 1/10W
R637,638 RK73GB2A103J CHIP R 10K J 1/10W
R639 RK73GB2A332J CHIP R 3.3K J 1/10W
R640,641 RK73GB2A104J CHIP R 100K J 1/10W
R642-645 RK73GB2A122J CHIP R 1.2K J 1/10W
R646-649 RK73GB2A102J CHIP R 1.0K J 1/10W
R650 RK73GB2A123J CHIP R 12K J 1/10W
R651 RK73GB2A103J CHIP R 10K J 1/10W
R652-654 RK73GB2A473J CHIP R 47K J 1/10W
R655,656 RK73EB2E100J CHIP R 10 J 1/4W
R657 RK73EB2E102J CHIP R 1.0K J 1/4W
R658,659 RK73GB2A153J CHIP R 15K J 1/10W
R660,661 RK73GB2A103J CHIP R 10K J 1/10W
R662 RK73GB2A472J CHIP R 4.7K J 1/10W
R663 RK73GB2A103J CHIP R 10K J 1/10W
R664 RK73GB2A154J CHIP R 150K J 1/10W
R665 RK73GB2A103J CHIP R 10K J 1/10W
R666 RK73GB2A332J CHIP R 3.3K J 1/10W
R667 RK73GB2A103J CHIP R 10K J 1/10W
VR1 R31-0232-15 VARIABLE RESISTOR (10K,A)
W101 R92-2053-05 CHIP R 0 OHM J 1/8W
W102,103 R92-1252-05 CHIP R 0 OHM J 1/16W
W104 R92-2053-05 CHIP R 0 OHM J 1/8W
W105 R92-1252-05 CHIP R 0 OHM J 1/16W
W106,107 R92-2053-05 CHIP R 0 OHM J 1/8W
W108 R92-1252-05 CHIP R 0 OHM J 1/16W
W109 R92-2053-05 CHIP R 0 OHM J 1/8W
W110 R92-1252-05 CHIP R 0 OHM J 1/16W
W111,112 R92-2053-05 CHIP R 0 OHM J 1/8W
W113 R92-1252-05 CHIP R 0 OHM J 1/16W
W114 R92-2053-05 CHIP R 0 OHM J 1/8W
W115 R92-1252-05 CHIP R 0 OHM J 1/16W
W116 R92-2053-05 CHIP R 0 OHM J 1/8W
W117 R92-1252-05 CHIP R 0 OHM J 1/16W
W118-120 R92-2053-05 CHIP R 0 OHM J 1/8W
W121,122 R92-1252-05 CHIP R 0 OHM J 1/16W
W123 R92-2053-05 CHIP R 0 OHM J 1/8W
W124-130 R92-1252-05 CHIP R 0 OHM J 1/16W
W131 R92-2053-05 CHIP R 0 OHM J 1/8W
W132,133 R92-1252-05 CHIP R 0 OHM J 1/16W
W134-138 R92-2053-05 CHIP R 0 OHM J 1/8W
W139 R92-1252-05 CHIP R 0 OHM J 1/16W
W140,141 R92-2053-05 CHIP R 0 OHM J 1/8W
W142-148 R92-1252-05 CHIP R 0 OHM J 1/16W
W149-153 R92-2053-05 CHIP R 0 OHM J 1/8W
W154-156 R92-1252-05 CHIP R 0 OHM J 1/16W
W157 R92-2053-05 CHIP R 0 OHM J 1/8W
W158,159 R92-1252-05 CHIP R 0 OHM J 1/16W
W160 R92-2053-05 CHIP R 0 OHM J 1/8W
W161 R92-1252-05 CHIP R 0 OHM J 1/16W
W163,164 R92-2053-05 CHIP R 0 OHM J 1/8W
S1 S62-0842-05 SLIDE SWITCH
D1 RM4ZLF-J4NF DIODE
AUDIO UNIT (X09-8612-70)

KAC-5203
11
Indicates safety critical components.
Ref. No. A
d
dN
e
wParts No. Description Desti-
nation Ref. No. A
d
dN
e
wParts No. Description Desti-
nation
E : Europe K: North America M: Other Areas W :Without Europe
PARTS LIST
D2-4 1SS133 DIODE
D6 FCH10A20 DIODE
D7 FRH10A20 DIODE
D8,9 UDZS15B ZENER DIODE
D101 LM1MA142WK-G DIODE
D102 LM1MA142WA-G DIODE
D103,104 UDZS6.8B ZENER DIODE
D201-204 1SS133 DIODE
D601 UDZS6.8B ZENER DIODE
D602 UDZS15B ZENER DIODE
D603 1SS133 DIODE
D604 UDZS10B ZENER DIODE
D605-607 1SS133 DIODE
D609 UDZS10B ZENER DIODE
D610,611 1SS133 DIODE
D612 LM1MA142WK-G DIODE
D613 LM1MA142WA-G DIODE
D614 1SS133 DIODE
D615,616 LM1MA142WA-G DIODE
D617 1SS133 DIODE
IC1-3 BA4560RF ANALOGUE IC
IC4 TL494IDR ANALOGUE IC
IC5 BA4560RF ANALOGUE IC
Q3 2SC4097 TRANSISTOR
Q4,5 2SA1577 TRANSISTOR
Q6 2SC4097 TRANSISTOR
Q7,8 STP60NF06FP FET
Q201-204 2SA1576A(R,S) TRANSISTOR
Q205,206 2SA992-A(F,E) TRANSISTOR
Q207-210 2SC1845-A(F,E) TRANSISTOR
Q211,212 2SC3419(Y)-F TRANSISTOR
Q213,214 2SC1627A-F TRANSISTOR
Q215,216 2SA817A-F TRANSISTOR
Q217,218 2SC4468NF TRANSISTOR
Q219,220 2SA1695NF TRANSISTOR
Q601 2SB1241 TRANSISTOR
Q602-604 2SC4081 TRANSISTOR
Q605,606 2SA1576A(R,S) TRANSISTOR
Q607-609 2SC4081 TRANSISTOR
Q610 2SC1845-A(F,E) TRANSISTOR
Q611 2SC4081 TRANSISTOR
Q612 2SA1576A(R,S) TRANSISTOR
Q613 2SC4081 TRANSISTOR
Q614 2SA1576A(R,S) TRANSISTOR
Q615,616 2SC4081 TRANSISTOR
Q617 2SC1845-A(F,E) TRANSISTOR
Q618,619 2SA992-A(F,E) TRANSISTOR
Q620 2SC1845-A(F,E) TRANSISTOR
Q621-623 2SC4081 TRANSISTOR
TH1 NCP18WB473J0S THERMISTOR (47K OHM)
AUDIO UNIT (X09-8612-70)

KAC-5203
SPECIFICATIONS
CEA-2006
RMS Watts per channel @ 4Ω, 1%THD+N ..........................................55W x 2
Signal to Noise Ratio (Reference: 1W into 4Ω)....................................... 80dBA
Audio Section
Max Power Output.................................................................................... 350W
Rated Power Output
Normal (4Ω) (20Hz~20kHz, 0.08%THD) ..........................................55W x 2
Normal (4Ω) (DIN:45324, +B=14.4V) ...............................................55W x 2
Normal (2Ω) (1kHz, 0.8% THD).........................................................75W x 2
Bridged (4Ω) (1kHz, 0.8% THD)......................................................150W x 1
Frequency Response (+0, –3dB) .................................................... 5Hz~50kHz
Sensitivity (rated output) (MAX.) ................................................................ 0.2V
Sensitivity (rated output) (MIN.) ................................................................. 5.0V
Signal to Noise Ratio................................................................................. 95dB
Input Impedance ....................................................................................... 10kΩ
Low Pass Filter Frequency (-12dB/oct.) .................................................... 80Hz
General
OperatingVoltage......................................................14.4V (11~16V allowable)
Current Consumption .................................................................................. 17A
Dimensions (W x H x D)
........................................ 230 x 55 x 198 mm (9-1/16 x 2-3/16 x 7-13/16 inch)
Weight ........................................................................................ 1.7kg (3.75lbs)
KENWOOD follows a policy of continuous advancements in development.
For this reason specifications may be changed without notice.
Installation board, etc.
(thickness : 15mm or more)
Self-tapping screw
(ø4 x 16 mm)
230mm
217.4mm
ø4.6
131.8mm
198mm
INSTALLATION