Service manual
CD-K491W
– 38 –
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Figure 38 SCHEMATIC DIAGRAM (17/20)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
RV21
56K
RV19
390
CV19
100/50
RV13
56K
CV15
470P
RV14
56K
CV16
470P
RV20
390
CV20
100/50
RV22
56K
CV22
15P
RV24
1K
CV21
15P
RV23
1K
CV18
47P
RV18
1K
CV14
2.2/50
CV12
2.2/50
RV32
1K
RV30
0.2(1W)
CV26
0.022
CV24
47/50
6
7
CV11
2.2/50
CV13
2.2/50
RV17
1K
CV17
47P
RV31
1K
RV29
0.2(1W)
CV23
47/50
RV25
100
(1/2W)
5
11
15
16
CV28
47/50
RY14
56K
RY15
390
CY16
100/50
RY11
56K
CY13
470P
CY15
15P
RY13
1K
CY11
2.2/50
CY12
2.2/50
RY12
1K
CY14
47P
RY17
1K
RY16
0.2(1W)
CY17
0.022
DV15
1SS133
QV18
KTC3199 GR
RX21
56K
RX19
390
CX21
100/50
RX13
56K
CX15
470P
RX14
56K
CX16
470P
RX20
390
CX22
100/50
RX22
56K
CX20
15P
RX24
1K
CX19
15P
RX23
1K
CX18
47P
RX16
1K
CX14
2.2/50
CX12
2.2/50
RX32
1K
RX30
0.2(1W)
CX26
0.022
CX24
47/50
10
6
7
CX11
2.2/50
CX13
2.2/50
RX15
1K
CX17
47P
RX31
1K
RX29
0.2(1W)
CX23
47/50
CX25
0.022
11
CX28
47/50
RY54
56K
RY55
390
CY54
100/50
RY51
56K
CY53
470P
CY56
15P
RY53
1K
CY51
2.2/50
CY52
2.2/50
RY52
1K
CY55
47P
RY58
1K
RY56
0.2(1W)
CY57
0.022
18
17
QX16
KTC3
DX15
1SS133
QX15
KTC3199 GR
ICV01-B
3CH AF
POWER AMP.
STK40727
ICX01-A
3CH AF
POWER AMP.
STK40727
RV38
10K
RV37
47K
QV16
KTC3199 GR
1
2
RV36
22K
RV35
2.2K
QV17
KTA1268 GR
RV34
15K
RV33
10K
DV21
1SS133
RV71
820
1
2
14
RX37
47K
RX38
10K
QX18
KTC3199 GR
RX55
10K
CX27
1000/6.3
RX33
120K
RX35
2.2K
RX36
22K
RX34
15K
(1/2W)
QX17
KTA1268 GR
DX21
1SS133
RX71
820
CV25
0.022
RV27
10K
QV13
KTC3199 GR
DV13
1SS133
RV69
0.2(1W)
RV28
10K
QV14
KTC3199 GR
DV14
1SS133
RV70
0.2(1W)
RY18
10K
QY11
KTC3199 GR
DY11
1SS133
RY26
0.2(1W)
RX27
10K
QX13
KTC3199 GR
DX13
1SS133
RX69
0.2(1W)
RX28
10K
QX14
KTC3199 GR
DX14
1SS133
RX70
0.2(1W)
RY57
10K
DY51
1SS133
QY51
KTC3199 GR
20
RY66
0.2(1W)
9
8
16
15
9
13
12
8
CV30
3300/50
CV29
3300/50
CX30
3300/50
CX29
3300/50
CFWV11
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
1
4
19
10
14
13
12
3
RV63
120K
CV27
1000/6.3
RV26
100(1/2W)
1
CNPV
2 3 4
5
6
7
TO
CFWX11
10
11
12
13
9
8
7
6
5
4
3
2
1
4
19
3
RX26
100
(1/2W)
5
RX25
100(1/2W)
1
CNPX1
2 3 4
5
6
7
T
CFWP01
TO MAIN PWB
P29 12-D
FWP01
TO MAIN PWB
P29 12-B
CFWP02
FWP02
Fusible
RELAY4
OUT6
GND(M)
OUT4
OUT5
FAN SW
RELAY3
VOL2SW
POSISTOR
PROT
AMP
OUT3
RELAY2
OUT1(Lch)
RELAY1
GND(A)
FAN CONT
OUT2(Rch)
SP LEVEL
GND(M)
H/P SW
+12V(M)
FAN SW
VOL2SW
PROT
POSISTOR
AMP
CENTER
FR
NC
+B
Fusible
ICV01-A
3CH AF
POWER AMP.
STK40727
+B
–B
ICV01-C
3CH AF
POWER AMP.
STK40727
–B
+B
+B
+B
+VCC
+VCC
GND
GND
–VCC
–VCC
S.W
SU
NC
+B
ICX01-B
3CH AF
POWER AMP.
STK40727
Fusible
Fusible
ICX01-C
3CH AF
POWER
@
AMP.
STK40727
+B
–B
+VCC
+VCC
GND
GND
–VCC
–VCC
GND
+B
–B
+B
+B
1
+12V(M)
1
13
16
18
17
20
GND
GND(A)
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.0V
4.0V
-36.5V
-36V
-37V
37V
36.5V
4.0V
4.0V
4.0V
0V
0V
25.8V
25V
0V
0V
0V
0V
0V
0V
0V
0V
-24V
-24.5V
-25V
0V
0V
0V
0V
0V
0V
0V
0V
4.0V
4.0V
0.8V
-24V
0V
0V
0V
0V
0V
4.0V
4.0V
4.0V