B
C
D
E
F
G
H
I
J
A
2
4
3
5
6
7
1
R1
1K
10u50
C3
+
1000P
C1
10K
R3
R9 10K
15P
C6
R10
C11 1000P
R16 1K
5.6K
R11
R13
150
2.2K
R25
68
R15
2.2K
R26
5
6
7
3
2
1
30K
R27
C12
15P
30K
R28
1000P
C2
R4
10K
10u50
C4
+
1K
R2
2.2K
R229
2.2K
R228
2.2u50
C9
+
+
C7
+
C10
+
C8
2.2u50
2.2u50
2.2u50
51K
R23
51K
R22
51K
R24
51K
R21
R61
4.7K
10u50
C31
+
R62 47K
C32 470P
10K
R186
K1
C59
47u25
+
8
16K
C58
R143
470 1000P
R144
7
5
6
4
2
3
1
11
9
10
12
13
15
14
16
3
1
2
6
5
4
7
8
R162
R161 13K
33K
R168
C74
10u50
R167
10K
R165 10K
C73 1u50
10K
R166
R164 47K
C72 100u10
+
+
910
10u50
+
180K
TH2
TH1
L2
4.7K
R134
R138 150
22
R136
R140
1.5K
3300u50
C51
+
SERVO+
SP+
SP-
L+
R-
L-
R+
R163
R71
+
R137
4.7K
R135
R141
1.5K
R139 150
22
10K
27K
R5
R6
27K
C5 100P
R7 15K
1K
R8
4
1
2
3
4
1
2
3
4
4
2
3
1
2
3
4
1
4
2
3
1
5.6K
R12
150
R14
VR1
5K(A)
7.5K
R29
C13
0.1
R30
12K
R31
150K
R32
120K
R33
6.8K
50K(C)
VR2
10
9
8
C14
0.1
R34
4.7K
C15 0.047
10K
R35
R36
10
10u50
+
C16
1u50
+
C17
1u50
+
C18
1u50
+
C19
10K
R37
R38
20K
13
12
14
5.6K
R41
11
10u50
+
C20
36K
R40
36K
R39
22K
R42
5
6
7
8
4.3K
R45
22u50
+
C22
1
3
4
2
24K
R43
300
R44
0.22
C21
2.2u50
+
C23
3.6K
R46
R50 300
R49 1.1K
R51 4.3K
C24 100P
R47 4.3K
10u50
C25
+
22K
R52
4.3K
R48
R68 47K
6.8K
R63
C35 15P
C36 270P
R69 4.7K
R70 1K 1/2W
2.2K
R67
47u25
C34
+
100
R64
0.01
C33
R183
100K
R182
33
R181
180K
1u50
C76
+
R178
16K
47K
R179
16K
R180
10
R174
R172
30K
R173
2.7K
75K
R176
R177 33K
100
R175
10
R119
R113
R111
47u25
C67
+
R115
C65 47u25
+
R117
10
22K
2K
2K
33K
R170
100K
R171
1u50
+
C75
12P
C38
150
R73
R66
1K
1K
R65
47u25
+
+
10
R120
R116
22K
2K
R114
R118
10
R112
2K
47u25
C68
270P
C39
6.8K
R74
6.8K
R75
220
VR3
1000P
C40
1.8K
R76
150
R71
150
R72
510
R77
10
R93
220u50
+
C37
100(NB)
R79
C66
1/2W
10(NB)
10(NB)
R80
R81
R103
1K
R85
4.7(NB)
4.7(NB)
R87
4700P
C61
620
R105
100P
C48
1K
R101
C62
4700P
R106
620
R78
100(NB)
C47
100P
R83
10(NB)
10(NB)
R82
R104
R102
1K
1K
4.7(NB)
4.7(NB)
R86
R88
220
R84
1/2W(NB)
0.1 2W
R89
0.1 2W
R90
0.1 2W
R92
R91
0.1 2W
1
2
1.5K
R19
2W
1.5K
R17
2W
330K
R187
2200P
C53
10 1/2W
R131
10 1/2W
R132
2200P
C54
+
3300u50
C52
1K
R194
1.5K 2W
R20
1.5K 2W
R18
1.2K 2W
R193
R169
1.2K 2W
1K
R160
R159
6.2K
1/2W
10K
R155
4.7K
R156
3.3K
R151
R154
750
R153
3.3K
3.3K
R152
R158
4.7K
10u50
C69
+
C70
10u50
+
OVERLOAD-IN
MID-V
LA
TCH
GND
AC OFF IN
RELA
Y
VCC
MUTE
10K
R227
10K
R226
1000P
C79
100K
R188
L1
C1
GND
RT
CT
E1
E2
C2
VCC
CONT.
DT
FB
I.IN
NI.IN
R.OUT
I.IN
NI.IN
R142
10K
3900u16
C56
+
4700P
C55
10 1/2W
R133
SIGMA
SERVO-
SIGMA
10K
R107
R109
3.3K
C63
1000P
R108
3.3K
C64
1000P
R1
10
10K
1
2
3
4
2
1
P-CON
+B
GND
2.2K
R157
470 1/2W
R96
4700P
C42
2200P
C43
4.7 1/2W
R224
4.7 1/2W
R225
0.1
C77
0.1
C78
1000u16
C46
10 1/2W
R95
0.33
C44
0.33
C45
FUSE
1
2
2
1
IC1
Q26
Q6
Q1,2
Q41
10u50
+
C57
Q3,4
150K
R185
75K
R184
Q21-23
Q24,
25
Q15,16
Q7-10
Q11-14
Q37
Q27,28
Q29-32
Q33-36
Q38,39
E1
CN1
D1
D3
(1/4)
IC1
(2/4)
IC1
E2
CN2
Q1
D12
Q41
D26
D25
Q36
Q34
D28
Q30
Q32
J5
Lch
Rch
J1
J2
Q21
D27
Q35
Q33
Q31
Q29
D2
D4
(3/4)
IC1
(4/4)
IC1
S1
IC2
(2/2)
IC2
(1/2)
S2
Q2
Q23
Q22
D37
Q24
D24
D23
D22
D21
D35
Q19
Q17
Q25
Q3
Q4
D5
Q20
Q18
D36
D6
Q5
Q6
D9
D1
1
D7
Q7
Q15
Q8
Q9
D10
D16
Q10
D8
Q12
Q11
CN3
Q44
D34
Q40
D29
D30
D32
Q46
Q45
D31
D14
D13
D15
D16
D18
D19
D17
D20
Q27
Q28
Q39
Q38
J4
J3
D40
D38
IC1
: UPC4574C
IC2
: NJM4565D
IC3
: UPC494C
IC4
:
UPC1237HA
Q3,4
: 2SC2631(Q,R)
Q5
: 2SA1123(Q,R)
Q6
: 2SC4137(V,W)
Q7,8
: 2SC2235
Q9,10
: 2SA965
Q11,12
: 2SC5101LB
∗
5
Q13,14
: 2SA1909LB
∗
5
Q15,24,27,28
: 2SC1845(F,E)
Q17,19
: 2SC1627A
Q18,20,39,44
: 2SA817A
Q21,22,29,32,37,38,45
: 2SC945(A) (Q,P)
Q23,30,31,46
: 2SA733(A) (Q,P)
Q33-36
: IRFIZ48NLF24
D1-4,6-23,27,28,32-34,
37,38,40
: 1SS131
D24
: RD20JS(B)
D25
: FML22S
∗
A
D26
: FML22R
∗
A
D29
: RD7.5JS(B)
D31
: IN5406-M
D35,36
: RD16JS(B2)
D100
: B30-1613-05
GND LINE
SIGNAL LINE
D101
CN5
WH1
Q1,2,16,25,26,41
2SA992(F,E)
:
Q40
: DTA124ESA
INPUT
SENSITIVITY
FREQUENCY
LPF
INFRASONIC
OFF-15-25
OFF-6-12
BASS BOOST
INPUT BUFFER
INFRASONIC FILTER
ISOLATE LPF
PROTECTION
IC
Q26
CLASS A INITIAL
CURRENT CIRCUIT
STAGE CONSTANT-
AVR
TEMPERATURE
COMPENSATION
CLASS A
MIRROR
CURRENT
CIRCUIT
CLASS A INPUT
AMPLIFIER
DIFFERENTIAL
FINAL Tr. OVERCURRENT
DETECTION CONTROL
Q13
Q14
DC/DC CONVERTER
CONTROL IC
DISPLAY
LED DRIVE
AVR
CLASS A TWO-STAGE
AMPLIFIER
DIFFERENTIAL
MUTING
CIRCUIT
CONNECTION
ERRONEOUS
AGAINST
PROTECTION CIRCUIT
CURRENT
LIMITER
CLASS B
INITIAL STAGE
FINAL
CLASS B
RELAY
DRIVE
Q37
P-CON INPUT
PROTECTION
OVERCURRENT
AGAINST
PROTECTION CIRCUIT
CONNECTION
ERRONEOUS
DC/DC CONVERTER
DRIVE
DC/DC CONVERTER
SWITCHING FET
D33
CN4
P-CON
CONTROL
IC3
(X09-5260-10) (A/4)
RCA INPUT
(X09- ) (B/4)
(X09- ) (C/4)
SPEAKER
LEVEL INPUT
IC4
(X09- ) (D/4)
KAC-819
22K
22K
KAC-819
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.
1
4
8
5
NJM4565D
1
8
9
16
UPC494C
1
7
8
14
UPC4574C
1
8
UPC1237HA
2SA1123
2SA733(A)
2SA817A
2SA965
2SA992
2SC1627A
2SC1845
2SC2235
2SC2631
2SC945(A)
E
C
B
DTA124ESA
E
C
B
E
C
B
2SC4137
•DC voltages are as measured with a high impedance voltmeter.
Values may vary slightly due to variations between individual
in struments or/and units.
15.5V
0V
0V
0V
-15.5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
15.5V
-15.5V
0.01V
0.65V
-43.0V
-5.0V
0.075V
-43.0V
-2.1V
-1.1V
-0.53V
1.1V
43.0V
43.5V
-43.5V
-0.75V
0.57V
0.54V
0.54V
0.57V
0.12V
-0.13V
-0.6V
-0.56V
-0.6V
-0.56V
45.0V
-45.0V
0V
0V
1.5V
0V
2.1V
3.5V
45.0V
14.4V
14.4V
3.7V
1.7V
0.2V
3.0V
13.5V
0V
0V
0V
5.0V
5.0V
5.0V
13.5V
13.5V
5.0V
5.0V
14.3V
14.4V
0.4V
B LINE
B LINE
