A
C
E
G
I
B
D
F
H
J
2
1
3
5
7
4
6
B LINE
B LINE
0V
0V
0V
0V
0V
0V
0.9V
0.26V
-33.8V
0.26V
-34.5V
-33.8V
0.8V
0.1V
-33.8V
-34.5V
0.2V
-33.8V
-1.26V
1.12V
-1.26V
-0.58
0.55V
34.5V
0V
3.5V
-34.8V
-1.26V
-34.8V
-0.66V
0V
0V
2.3V
17.0V
29.0V
1.19V
-0.54V
-1.23V
1.17V
34.5V
0.55V
0V
-0.62V
-34.8V
0V
3.5V
34.5V
-4.2V
17.0V
18.1V
29.0V
34.5V
0V
0.21V
30.0V
0.75V
0V
0V
0V
0V
14.5V
15.3V
5.4V
15.2V
0V
5.4V
15.2V
3.38V
0V
0V
-1.23V
-34.8V
2.35V
3.8V
0.1V
0.63V
0V
15.3V
0.57V
0.57V
15.1V
3.8V
1.75V
5.1V
0V
0V
0V
0V
0V
18.1V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
-17.5V
-17.5V
18.1V
0V
1.13V
-33.8V
-1.26V
CN2
CN1
J2
J3
Lch 1
Rch 2
Lch 1
Rch 2
Q37
Q36
D28
D32
D33
Q19
Q21
D27
D12
D2
D1
D3
D4
(1/4)
IC1
(2/4)
IC1
IC1
(3/4)
IC1
(4/4)
IC3
(1/2)
IC3
(2/2)
D9
D10
Q22
D31
D35
D1
1
D17
D16
Q1
Q2
Q7
Q3
Q5
Q8
Q35
Q6
Q4
D18
D29
D30
Q9
Q10
D8
D37
Q29
Q11
Q23
Q31
Q13
J1
BATT
GND
P-CON
D34
D25
D26
Q18
Q17
D15
D13
D14
Q38
Q39
D19
D7
SP OUT
Q32
Q14
Q12
Q30
IC1
IC3
IC4
Q1,2,7-10,19,23,24,35,36,38-40
Q3-6,37
Q11,12
Q13,14
Q17,18
Q21
Q22
Q29,30
Q31,32
D1-4,8,16-19,25-30,32,33,36-42
D7
D9,10,34
D11,35
D12
D13
D14
D15
D31
: UPC4574C
: NJM4565D
: UPC494C
: 2SC945(A)(Q,P)
: 2SA733(A)(Q,P)
: 2SC1627A
: 2SA817A
: IRFIZ34G
: 2SC3940A(R,S)
: DTA124EL
: 2SC5100LB
: 2SA1908LB
: 1SS131
: RD7.5JS(B)
: RD16JS(B)
: RD8.2JS(B)
: B30-1460-05
: FMU22S
: FMU22R
: 1N5406-M
: RD5.1JS(B2)
2 Rch
1 Lch
D36
Q40
Isolation amp.
L.P.F.
Switching regulator
Muting
transistor
Differential amp.
-compensating
For temperature
Power
driver
Protection for
overcurrent
Power switching
P-con
detector
A-class power
supply controller
stage
Power
A-class
muting
P-con
detector
Power
switch
DC protection
Overvoltage
protection
driver
Muting
GND LINE
SIGNAL LINE
A
A
WH2
WH1
SENSITIVITY
INPUT
DC/DC converter
ADJ
IDLE
ADJ
IDLE
F1(25A)
4
3
2
1
4
7
8
6
5
3
2
1
13
10
9
11
12
14
15
16
2
1
4
3
R37 2.2K
R38 2.2K
22u35
C25
+
+
+
+
22u35
C27
22u35
C28
22u35
C26
REFERENCE REQULLA
T
O
R
OSCILLA
T
O
R
1000P
R53
1.2K
R54 1.2K
C37
0.1
3.3K
R56
30K
R57
C42
0.1u50
+
6.8K
R73
16K
R68 680
TH1
27K
R64
2.2K
R65
R66
10K
+
R69
4.7K
+
680K
R62
R60 10K
R67
C40
22K
R58
100
R59
1.5K
R75
R74 1.5K
100u35
C38
+
10u50
C41
R63 2.7K
R61 27K
1u50
C39
5
6
2
3
9
10
13
12
C8
22P
R1 1K
C1 1000P
C2 1000P
C5
10u50
+
R5 10K
10K
R6
10K
R47
C7
22P
R49
10K
10K
R48
R12
2.2K
C15
1000P
2.2K
R11
R9 56
R10 56
VR1 5K
150
R158
R8
2.2K
150
R160
2.2K
R14
150
R159
2.2K
R13
R157
150
R7
2.2K
20K
R19
20K
R18
2
3
R2 1K
R15
1K
R46 10K
2.2K
R3
R4 2.2K
R16 20K
R17 20K
22P
C1
1
C12
22P
7
1
4
8
11
14
100
R20
R21
100
4.7K
R27
R29
1.8K
4.7K
R28
+
10u50
C6
HPF / OFF/ LPF
STEREO / L+R/ L(MONO)
R34 27K
27K
R35
R26 4.7K
1
7
6.8K
R31
R33 22K
27K
R36
C21 0.12
0.082
C20
0.022
C22
R30 1K
R32 8.2K
0.33u50
C17
+
0.1u50
C19
+
C16
2.2u50
+
+
C18
0.47u50
1K
R45
C14
22u16
+
C13
+
22u16
4
5
6
8
R52
3.3K
3.3K
R25
3.3K
R24
C54
C48 220u16
+
R81 82K
C51 1800P
R80 82K
2200P
22u35
C50
+
1.5K
R22
1.5K
R23
C80
22u16
+
+
22u16
C79
2.2u50
C49
+
7.5K
R78
C61
100P
R82
820
820
R84
100
R90
4700P
C60
100P
C62
56
3.9K
R86
7.5K
R79
+
22u35
C53
820
R85
R91
100
C59
4700P
10P
C58
22u35
C56
+
3.3K
R94
R96
82K
R89
7.5K
R87
R161
47K
C57
6P
C55
22u35
+
R93
56
R92
R51
150K
R95 3.3K
R97 3.3K
3K
R101
3K
R100
VR2 470
VR3 470
1000P
C63
C64
1000P
R88
82K
R104
100
100P
C74
100P
C72
C73
100P
100P
C71
R106
100
100
R107
R105
100
R1
15
0.1
R109
220 1/2W
1/2W
R108
0.1
R1
14
0.1
R1
12
0.1
R1
13
R171
1K
R179
10K
C85
+
100u10
22K
R180
TP1
R175
3K
C68
0.047
R128
10
R164 100K
R163 100K
C67
0.047
10
R127
L1
3300u
16
+
C45
330
R98
91
R99
1/2W
R70 2.7K
R71 3.6K
10
R77
+
470u35
C43
ERROR
AMP
R167 4.7K
C77 10u
+
R168
4.7K
390
R124
390
R123
R125
1.5K
R126
1.5K
3.3K
R55
T1
10 1/2W
R122
C46
2200u35
2200u35
C47
+
+
47u16
C75
+
R166 5.6K
C70
1000P
16
R103
1K
2W
R72 470 1W
R76
470 1W
820
R83
R102
1K
2W
2
1
18K
R44
R42 18K
18K
R41
R43 18K
3.3K
+
C100 0.1u50
IC1
IC3
IC4
Q1,2
Q3-6
Q9,10
Q11-14
Q23-26,41
Q17,18
Q19
Q21
Q29-32
Q35
Q36
Q37
Q38,39
Q40
VR3
RCA IN
(X09- ) (C/3)
SP IN
(X09- ) (B/3)
AUDIO UNIT (X09-5160-10) (A/3)
IC4
S1
S2
18uH
Q25,26
: 2SA992(F,E)
Q41
: 2SC1845(F,E)
4700P
C81
2W
D39
Q25
R173
1K
R177
3K
4700P
C83
Q24
R172
1K
R176
3K
4700P
C82
Q26
R174
1K
R178
3K
4700P
C84
D38
D42
D40
D41
2W
220
Q41
Voltage amp.
Q7,8
OPERATION
FILTER
KAC-629S
2SA773(A)
2SA817A
2SA992
2SC1627A
2SC1845
2SC3940A
2SC945(A)
NJM4565D
UPC4574C
UPC494C
CAUTION:
For continued safety, replace safety critical components
only with manufacturer's recommended parts (refer to parts
list).indicates safety critical components. For continued protection
against risk of fire, replace only with same type and rating fuse(s). 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.
