2SA1123
2SA733(A)
2SA817A
2SA965
2SA992
2SC1627A
2SC1845
2SC2235
2SC2631
2SC945(A)
E C
B
DTA124ESA
B C
E
2SC4137
EC
B
NJM4565D
1
4
5
8
UPC4574C
8
7
1
14
UPC494C
UPC1237HA
1
8
A
B
C
D
E
F
G
I
H
1
2
3
4
5
6
7
1
1
3
2
5
6
7
1
1
2
2
9
8
1 0
3
3
2
3
R 8
1 k
V R 1
5 k ( A )
V R 2
5 0 k ( C )
C 1 5
0 . 0 4 7 u
R 3 6
1 0
R 4 1
5 . 6 k
1 3
1 2
1 4
2
3
4
1
5
6
8
7
S 1
1 1
C 1 6
1 0 u
5 0 v
C 1 7
1 u
5 0 v
C 1 8
1 u
5 0 v
C 1 9
1 u
5 0 v
C 2 0
1 0 u
5 0 v
C 2 3
2 . 2 u
5 0 v
S 2
C 2 5
1 0 u
5 0 v
R 6 1
4 . 7 k
C 2 2
2 2 u
5 0 v
R 4 5
4 . 3 k
R 5 1
4 . 3 k
C 2 4
1 0 0 p
C 2 1
0 . 2 2 u
R 4 4
3 0 0
C 1 1
1 0 0 0 p
5 0 v
R 2 5
2 . 2 k
R 2 6
2 . 2 k
R 1 3
1 5 0
R 1 1
5 . 6 k
R 9
1 0 k
R 1 2
5 . 6 k
R 1 4
1 5 0
R 2 8
3 0 k
R 2 9
7 . 5 k
R 3 0
1 2 k
R 3 1
1 5 0 k
R 3 2
1 2 0 k
R 3 3
6 . 8 k
R 3 5
1 0 k
R 1 6
1 k
R10
10k
R15
68
C12
15p
C13
0.1u
50v
C14
0.1u
R37
10k
R38
20k
R40
36k
R39
36k
R43
24k
R52
22k
R175
100
R177
33k
R176
75k
R63
6.8k
C31
10u50v
R 1 1 9
1 0
R 1 1 5
2 2 k
1 / 4 w
R 7 9
1 0 0
1 / 4 w
( N B )
R 8 0
1 0
1 / 4 w
( N B )
R 8 1
1 0
1 / 4 w
( N B )
R 8 3
1 0
1 / 4 w
( N B )
R 8 2
1 0
1 / 4 w
( N B )
R78
100
1/4w
(NB)
R93
10
1/2w
R70
1k
1/2w
C37
220u
50v
C68
47u
25v
C66
47u
25v
C76
1u
50v
R184
75k
R182
33
R183
100k
R161
13k
R164
47k
R163
910
R165
10k
R167
10k
R168
33k
R162
180k
C71
10u
50v
C72
100u
10v
C73
1u
50v
C74
10u50v
R181
180k
R178
16k
R180
16k
R73
150
R 8 8
4 . 7
( N B )
R86
4.7
(NB)
R19
1.5k
2w
R187
330k
R84
220
1/2w
(NB)
R85
4.7
(NB)
R89
0.1
2w
R105
620
C61
4700p
R106
620
R77
510
R102
1k
C62
4700p
C47
100p
50v
C38
12p
C40
1000p
50v
C39
270p
R67
2.2k
R65
1k
R62
47k
R186
10k
R47
4.3k
C32
470p
C34
47u
25v
R90
0.1
2w
R18
1.5k
2w
R20
1.5k
2w
R92
0.1
2w
R17
1.5k
2w
R91
0.1
2w
R169
1.2k
2w
R193
1.2k
2w
R 1 0 3
1 k
R 1 0 4
1 k
K 1
R101
1k
R 8 7
4 . 7
( N B )
R 1 9 4
1 k
C N 3
V R 3
2 2 0
R 1 7 1
1 0 0 k
R 1 7 2
3 0 k
R 1 7 4
1 0
C 7 5
1 u 5 0 v
R 1 1 1
2 k
1 / 4 w
R 1 1 3
2 k
1 / 4 w
R 1 1 7
1 0
C65
47u
25v
R173
2.7k
R170
33k
R75
6.8k
1/4w
R 6 9
4 . 7 k
1 / 4 w
C 3 6
2 7 0 p
C 3 5
1 5 p
C 3 3
0 . 0 1 u
R 6 4
1 0 0
R 1 8 5
1 5 0 k
R 1 6 6
1 0 k
R 2 1
5 1 k
R 6
2 7 k
R 1
1 k
R2
1k
R4
10k
R3
10k
R7
15k
R 5
2 7 k
C 3
1 0 u
5 0 v
C2
1000p
C1
1000p
C5
100p
R 2 3
5 1 k
R 1 5 7
2 . 2 k
R229
2.2k
R228
2.2k
R131
10
1/2w
R132
10
1/2w
C53
2200p
C55
4700p
50v
C 5 6
3 9 0 0 p
1 6 v
R 1 3 6
2 2
R 1 3 7
2 2
R 1 3 8
1 5 0
R 1 3 9
1 5 0
IC1
IC2
IC3
IC4
:UPC4574C
:NJM4565D
:UPC494C
:UPC1237HA
Q1,2,16,25,26,41
Q3,4
Q5
Q6
Q7,8
Q9,10
Q11,12
Q13,14
Q15,24,27,28
Q17,19
Q18,20,39,44
Q21,22,29,32,37,38,45
Q23,30,31,46
Q33-36
Q40
:2SA992(F,E)
:2SC2631(Q,R)
:2SA1123(Q,R)
:2SC4137(V,W)
:2SC2235
:2SA965
:2SC5101LB
✽
5
:2SA1909LB
✽
5
:2SC1845(F,E)
:2SC1627A
:2SA817A
:2SC945(A)(Q,P)
:2SA733(A)(Q,P)
:IRFIZ48NLF24
:DTA124ESA
:1SS131
:RD20JS(B)
:FML22S
✽
A
:IN5406-M
:RD16JS(B2)
:B30-1460-05
:FML22R
✽
A
:RD7.5JS(B)
D1-4,6-23,27,28,32-34,37,38,40
D24
D25
D26
D29
D31
D35,36
D100
R 1 4 3
4 7 0
R 1 4 4
1 6 k
1
2
3
4
5
6
7
8
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
C 5 9
4 7 u 2 5 v
C 5 7 1 0 u 5 0 v
R 1 4 2 1 0 k
C 5 8
1 0 0 0 p
5 0 v
R133
10
1/2w
R134
4.7k
R140
1.5k
R141
1.5k
R109
3.3k
R110
3.3k
R96
470
1/2w
R95
10
1/2w
C46
16v
1000u
R155
10k
R 1 5 6
4 . 7 k
R 1 0 7
1 0 k
R 1 0 8
1 0 k
R 1 5 8
4 . 7 k
R 1 5 1
3 . 3 k
R 1 5 2
3 . 3 k
7 . 5 v
R153
3.3k
C70
10u
50v
C79
1000p
C69
10u
50v
R154
750
R226
10k
R188
100k
R227
10k
J 5
C N 4
S I G M A
+
-
S E RVO
S P +
S P -
S I G M A
S E RVO
L 1
J 4
J 3
P - C O N
+ B
G N D
C63
1000p
C64
1000p
C42
4700p
C43
2200p
C44
0.33u
C77
0.1u
R224
4.7
1/2w
R225
4.7
1/2w
FUSE
C78
0.1u
C45
0.33u
R135
4.7k
C54
2200p
L 2
C52
3300u
50v
C51
3300u
50v
R 2 2
5 1 k
R 2 4
5 1 k
C 7
2 . 2 u
5 0 v
C 4
1 0 u
5 0 v
C 9
2 . 2 u
5 0 v
C 1 0
2 . 2 u
5 0 v
C 8
2 . 2 u
5 0 v
C N 2
E 2
J 2
C N 1
E 1
J 1
L c h 1
R c h 2
R +
R -
L -
L +
1
2
3
4
5
6
7
8
T H 1
T H 2
R 1 5 9
6 . 2 k
R 1 6 0
1 k
1 / 2 w
R 6 6
1 k
R 1 1 6
2 2 k
1 / 4 w
R 1 1 2
2 k
1 / 4 w
R 1 2 0
1 0
R 1 7 9
4 7 k
R 1 1 8
1 0
R 1 1 4
2 k
1 / 4 w
R 6 8 4 7 k
C67
47u
25v
R74
6.8k 1/4w
R71
150
R72
150
C48
100p
R76
1.8k
R42
22k
R46
3.6k
R48 4.3k
R49 1.1k
R50 300
R34
4.7k
R27
30k
C6
15p
4
(X09-5320-10 A/3)
(X09 B/3)
RCA INPUT
(X09 C/3)
SPEAKER LEVEL INPUT
I C 1
1 / 4
I C 1
2 / 4
I C 1
3 / 4
I C 1
4 / 4
I C 2 1 / 2
I C 2
2 / 2
Q 2 6
Q 1 7
Q 1 9
Q 5
Q 8
Q 1 2
Q 1 1
Q 1 6
Q 1 3
Q 1 4
Q 9
Q 4
Q 3
Q 2 0
Q 2 2
Q 2 3
I C 4
Q 4 1
D 4 0
D 3 8
D 2 5
Q 3 6
Q 3 5
Q 3 3
Q 3 4
Q 3 2
I C 3
Q 2 7
Q 2 8
Q 3 9
D 1 3
D 1 8
D 1 7
D 1 9
D 2 9
D 3 0
Q 3 8
Q 3 7
Q 4 5
Q 4 6
D31
D 2 0
D 1 4
D 1 5
D 1 6
D 3 2
D33
Q 3 0
Q 3 1
Q 2 9
D 2 8
D 2 7
D 2 6
Q 4 0
D 1 0 0
D34
Q 1 8
D 5
D36
D37
Q 1 0
Q 4 4
D 7
D 8
Q 7
Q 1 5
Q 6
Q 2 5
Q 2 4
Q 2
Q 1
Q 2 1
D1
D3
D4
D 2
D23
D22
D21
D35
D6
D9
D11
D10
D12
D24
TEMPERATURE COMPENSATION
Q6
CLASS B
INITIAL STAGE
Q7-10
CLASS B FINAL
Q11-14
CURRENT
LIMITER
Q15,16
AVR
AVR
AVR
INPUT BUFFER
LPF
INFRASONIC FILTER
ISOLATE
IC1
PROTECTION IC
CLASS A INPUT DIFFERENTIAL AMPLIFIER
MID-V
O
VERLO
AD-IN
LA
TCH
A
C
OFF IN
GND
RELA
Y
MUTE
Vcc
Q1,2
BASS BOAST
IC2
TWO-STAGE
DIFFERENTIAL
AMPLIFIER
CLASS A
Q3,4
MUTING CIRCUIT
Q21-23
ERRONEOUS
CONNECTION
PROTECTION CIRCUIT
AGAINST
Q24,25
CLASS A INITIAL STAGE CONSTANT-CURRENT CIRCUIT
Q26
S1
DC / DC CONVERTER DRIVE
NI.IN
I.IN
FB
DT
CT
RT
GND
C1
NI.IN
I.IN
R-OUT
CONT.
Vcc
C2
E2
E1
Q29-32
DC/DC CONVERTER
SWITCHING FET
P-CON INPUT
OVERCURRENT
PROTECTION
Q37
P-CON CONTROL
Q38,39
DISPLAY LED DRIVE
Q40
FINAL Tr. OVERCURRENT
DETECTION CONTROL
Q41
RELAY
DRIVE
DC/DC CONVERTER
CONTROL IC
IC3
Q33-Q36
Q44
ERRONEOUS
CONNECTION
PROTECTION CIRCUIT
AGAINST
Q27,28
CLASS A
CURRENT
MIRROR
CIRCUIT
Q5
INPUT SENSITIVITY
VR1
LPF FREQUENCY
VR2
INFRASONIC OFF -15-25
BASS BOOST OFF- 6-12
S2
0V
0V
15.5V
-15.5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0.01V
-5V
0.65V
0.075V
15.5V
43V
43.5V
1.1V
0.57V
0.12V
0.57V
0.54V
0.54V
-0.56V
-0.56V
-0.6V
-0.6V
-0.13V
-0.75V
-43.5V
-1.1V
-2.1V
-0.53V
-15.5V
-43V
-43V
-45V
0V
45V
45V
2.1V
3.5V
14.3V
0.4V
14.4V
14.4V
14.4V
0V
3V
0.2V
1.7V
0V
3.7V
13.5V
5V
5V
13.5V
13.5V
5V
5V
5V
0V
0V
0V
0V
1.5V
0V
-1.1V
KAC-719
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.
DC voltages are as measured with a high impedance voltmeter. Values may
vary slightly due to variations between individual instruments or/and units.
