Kenwood KAC-5201 Schematics
A B C D E F G H I J
(X09-) (B/3)
RCA INPUT
1
Lch 1
Rch 2
J1
E1
1
2
3
2
(X09-) (C/3)
SPEAKER LEVEL INPUT
J2
1
1
L
L
R
2
2
3
3
3
R
4
4
AUDIO UNIT (X09-5640-10) (A/3)
D1
820
R1
820
R2
C3
10u16
+
C1 1500P
C2 1500P
C4
10u16
+
R31
R32
R3 9.1K
R4 9.1K
2.2K
2.2K
CN1
1
2
3
44
WH1
CN2E2
1
2
3
4
WH2
D2
C5 22P
C6 22P
D3
D4
IC1(1/4)
0V
3
2
13
12
1
R5 3.9K
R150
1000P
R6 3.9K
14
0V
R7 10K
R8 10K
0V
0V
IC1(2/4)
C9 2.2u50
C11 2.2u50 R21 22K
C12 2.2u50+R22 22K
C10 2.2u50+R20 22K
R19 22K
+
+
ISOLATION AMP.
R9
2.2K
INPUT
0V
SENSITIVITY
R11
2.2K
R13
1K
C60
VR1
5K(A)
R12
R14
2.2K
R10
2.2K
0V
R15 R39
150
56
56
R16
150
R17
150
R18
150
2.2K
R41
2.2K
R42
2.2K
R40
2.2K
0V
IC1(3/4)
C7 22P
R43 36K
C8 22P
R44 36K
0V
IC1(4/4)
IC1 : UPC4574C
IC2 : NJM4565D
17.1V
S1
-17.1V
0V
7
8
R49 4.7K
R50 4.7K 8
0V
0V
17.1V 17.2V
0V
5
0V
6
IC2(1/2)
R51
1.8K
R52 4.7K
R54
27K
R53
7
27K
C14
0.082
R55
27K
C15 0.12
-0.2V
R56
1K
Q20
-0.8V
C16 0.022
R57 15K
4
5
6
R45 36K
0V
ST/L
MONO
0V
R46 36K
9
10
11
C17
22u16
+
R58
47K
LPF
OFF/ONL.P.F.
C19
22u16
+
S2
R59 10K
0V
0V
IC2(2/2)
3
2
4
R60
10K
-17.1V
0V
C20
22u16
1
+
IC3 : M5219P
IC4 : UPC494C
Q1,2,5,6,17,18,20,23,24
Q3,4,25,26
Q7,8 : 2SC945(A)(Q)
Q9,10 : 2SC1627A
Q11,12 : 2SA817A
Q13,14 : 2SC5099LB
Q15,16 : 2SA1907LB
Q21,22 :
D1-4,11-24,27,28,31-33
D5,6 : RD22JS(B)
D7-10 : RD8.2JS(B)
D25 : FMU22S
D26 : FMU22R
D29 : B30-1460-05
D30 : 1N5406-M
D34 : RD7.5JS(B)
D35 : RD10JS(B)
2SC945(A)(Q,P)
: 2SA733(A)(Q,P)
IRFIZ44N
: 1SS133
A
∗
A
∗
SIGNAL LINE
GND LINE
5(P)
∗
5(P)
∗
B LINE
B LINE
2SA733(A)
2SA817A
2SC1627A
2SC945(A)
NJM4565D
UPC4574C
UPC494C
B
C
E
M5219P
R73
470 2W
D11
R77
120
30.2V
29.6V
R75
R76
D13
22K
D15D17D16 D18
22K
D14D12
29.6V
Q3
R81
750
Q5
R79
R80
120
120
1K
R83
D21 D19
-30.2V
-30.2V
0.8V
VR3
-1.2V
IDLE
ADJ.
-29.6V
Q6 Q12
-29.6V
-1.2V
D20 D22
R78
120
Q4
R84
1K
R82
0.1V
750
1.2V
VR4
Q8
IDLE
ADJ.
0.8V
30.2V
R71
47P
4.7K
+
10u16
+
10u16
4.7K
47P
(2/2)
R74
470 2W
23.4V
0V
0V
IC3
C31
47u25
D5
D6
C32
47u25
+
+
568
C27 12P
R67 47K
C29 8P
C30 8P
R68 47K
C28 12P
0V
2
3
R72
620
620
4
0.1V
IC3
(1/2)
7
1
0.1V
-23.4V
R103 100K
R61
4.7K
R63
3.3K
-6.2V
-6.2V
R64
3.3K
Q2
R62
4.7K
R104 47K
+
C33
22u16
D9 D7
0V
Q1
0V
0V
C34
22u16
+
0V
C21 330P
C22 330P
D10D8
C25
0V
R69
R65 47K
C23
C24
R66 47K
R70
C26
4
5
6
7
0.1V
1K
1K
Q7
1.2V
C35
C36
1.2V
R85
100
+
100u10
R87
100
R88
100
-1.2V
+
100u10
C37
1.2V
C39
C40
R86
100
1.2V
100P
100P
100P
C38
30.8V
0.6V
-1.2V
Q11
-0.6V
0.6V
100P
Q10
R89
220 1/2W
-0.6V
-30.8V
-30.8V
R90
220 1/2W
Q9
30.8V
R91
0.22 2W
R93
0.22
R94
0.22
R92
0.22 2W
30.8V
Q13
2W2W
Q15
Q16
0V
Q14
0V
R95
10K
0V
R96
10K
C43
0.047
R101
C44
0.047
16
15
14
13
12
REFERENCE
REGULATOR
11
10
9
L1
R111
3.3K
10 1/2W
R102
10 1/2W
0V
5.1V
5.1V
5.1V
14.2V
14.2V
5.0V
5.0V
D30
R100
R98
0V
R97
D23D24
R99
7.5K
270
270
7.5K
C42
4.7u50
0V
Q17
0V
+
Q18
3.6V
3.6V
30.8V
C51
C52
+
2200u35
+
2200u35
-30.8V
D25
AC 31.2V
AC 31.2V
D26
AC 31.2V
AC 31.2V
C53 2700PR105 10
R131
R132
1.5K
1.5K
D29
R123
1.5K
AC 31.2V
AC 31.2V
D33
Q26
-6.2V
10.0V
D35
+
C55 47u35
0V
DC/DC
CONVERTER
L2
0V
R120
R121
10K
100
2200u16
14.4V
R130
6.8K
10.0V
R122 33K
R119
9.9V
Q24
14.4V
14.4V
C54
+
14.4V
4.7K
R124
680K
C56
1u50
0.2V
5.0V
Q21
Q22
128 27K
+
27K
R126
0V
5.0V
R117
R118
TH1
D27
R107
R108
D28
2.7K
2.4K
56
R109
R110
56
+
R127 4.7K
C59 10u16
R116
10K
C57
1000P
R125 680
R129
16K
C58
1u50
150
150
OSCILLATOR
IC4
2.5V
2
3.7V
3
0.1V
4
0.7V
5
1.7V
6
3.8V
7
0V
14.2V
8
+
Q25
14.2V
R113
Q23
0V
ERROR
1
3.3K
OSCILLATOR
R115
13.6V
0V
R112
14.4V
3.3K
3.3K
AMP
R114
D31
D34
0.7V
30K
D32
0V
C41
4.7u50
+
0V
CN3
1
2
IDLE
ADJ.
KAC-5201
J3
1
Lch+
2
Lch-
3
Rch-
4
Rch+
F1(15A)
(F52-0012-05)
J3
1
BATT
2
GND
3P CON
SP. OUT
(14.4V)
(14.4V)
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, leakagecurrent or resistance measurements shall
be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high
impedance voltmeter. Values may vary
slightly due to variations between individual instruments or/and units.
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