Kenwood KAC-6404 Service Manual page 7

F
∗
L5
∗
C25
2200u16
+
∗
C26
Q1
2200u16
+
∗
L2
∗
C10
3300u16
+
∗
C11
Q2
3300u16
+
TP57
15.0V
+15V
TP60
-15.0V
15V
INPUT SENS.
TP253
R151
10
VR1 10K
C35 0.01 IC9
(2/2)
5 8
R155
7
430
6
4
R156 C36
430
0.01
IC9
(1/2)
TP251
3
C152
1
R152
2
0.1
10K
R154 10K
C150 47P
PHASE INVERTER
INPUT SENS.
R379
10
VR2 10K
C23 0.01 IC8
(2/2)
5 8
R355
7
430
6
4
R356 C24
430
0.01
IC8(1/2)
R380
3
1
2
10
G
BU
∗
Q5
Q7
Q9
Q10
∗
Q6
Q8
DC/DC CONVERTER
TP358
TP359
2-70 : +35.5V
2-71 : +24.7V D4
Q3
∗
R5
∗
R6
D5
Q4
2-70 : -35.5V
2-71 : -24.7V
+15V
15V
HPF : 80Hz.12dB/OCT
C159
10u50
+
IC7
C44
(2/2)
C151 C153
0.01
C155
0.1 0.1
5 8
10u50
7
6
+
C43
4
0.01
IC7
(1/2)
C156
C154
3
10u50
1
2
0.1
+
C160
10u50
+
+15V
15V
C353
0.047
C42 0.01
IC5
(2/2)
R359 R360 5
8
7
6
68K 10K
4
C41
0.01
R361
10K
LPF
50-200Hz
H
Q11
R25
2.5V
1K
D8
D6 R26
4.7K
R20 C15
330K 0.1
C13
R19
10u50
33K
10
C18
Q12
10u50
+
+B
B
C20
0.01
3 8
1
2
IC10
4
(1/2)
C21
0.01
-3dB ATT
R37 470K
5
7
6
IC10
(2/2)
TEMPERATURE DET
R201
3.3K
TP246
OFF/HPF
S2
R202
3.3K
TP242
C327
10u50
+
C355
S1
10u50
+
OFF/LPF
IC5
(1/2)
3
1
2
R374 10K 10u50
C352 47P
C328
PHASE INVERTER
10u50
+
I
KAC-6404/7404/M645/M845
BU
SW12V
5.0V
IC13
1 16
IN1+ IN2+
2 15
IN1-
IN2-
3
C14
FBACK
0.01
14
4
REF
DTC
R22
13
5
OUTCTRL
CT
3.3K
6 12
RT VCC
11
C2
7 10
GND E2 10
8 9
C1 E1 9
R1
100
-1.5dB
R34
5.6K R29
100
R2
100
R38 R30
5.6K 100
-3.0dB
+15V
15V
C37
R259 0.01
Q127
10K
R267 C30
Q131
10K 0.01
R268
Q132
10K
R260
Q128
10K
+15V
15V
R401
ATT -1.5dB
3.3K
R459
10K
Q227
R467
Q231
10K
R468
Q232
10K
R460
Q228
10K
ATT -3.0dB
C356
+
X09-8722-70/2-71 (2/4)
J
R265
10K
Q1
R261
10
R266
10K
Q1
R465
10K
Q2
C616
10u50
TP6
+
R659
18K
R466
10K
Q2
7