Service manual
CD-C449W/K449W
– 34 –
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Figure 34 SCHEMATIC DIAGRAM (13/15)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 17.
RV21
56K
RV17
1K
CV17
47P
RV31
1K
RV29
0.2(1W)
RV25
100(1/2W)
CV
2
47/
5
QV19
KTC3199 GR
DV15
1SS133
QV18
KTC3199 GR
ICV01
POWER AMP.
STK407-09
RV36
22K
RV35
2.2K
QV17
KTA1268 GR
RV69
0.2(1W)
13
14
9
3
7
FR
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CFWV11
CV30
3300/63
CV29
3300/63
CV18
47P
RV18
1K
CV14
2.2/50
CV12
2.2/50
RV32
1K
RV30
0.2(1W)
CV26
0.022
RV28
10K
QV14
KTC3200 GR
DV14
1SS133
RV70
0.2(1W)
11
10
4
5
6
1
2
8
12
15
ICV01
POWER AMP.
CV22
15P
RV26
100(1/2W)
RV33
10K
DV21
1SS133
RV71
820
CV27
1000/6.3
RV63
120K
RV38
10K
RV14
56K
CV20
100/50
RV20
270
RV37
47K
QV16
KTC3199 GR
CV23
47/63
42.1V
42V
0V
0.67V
0V
42.1V
0V
0V
0V
41.1V
RV23
1K
CV21
15P
41.4V
QV13
KTC3200 GR
DV13
1SS133
RV27
10K
CV25
0.022
0V
0V
3.9V
3.9V
0V
0V
0
0V
3.9V
0V
0V
0V
0V
0.2V
0V
–42V
–40.6V
–39.5V
0V
0V
3.9V
2 3 4
5
6
7
1
CNPV12
(1/4W)
Q908
KTC3199 GR
Q909
2SD2012
F999
T500mA L 250V
C919
4700/25
Q905
KTC3199 GR
C908
47/25
R909
1K
R908
33K
Q906
2SD2012
C910
47/25
R911
560(1/6)
D901
1SS133
Q904
KRA107 M
C907
220/25
ZD903
MTZJ130C
R907
560(1/4)
D904
1N4004S
Q902
2SD2012
Q901
KTC3199 GR
R902
1K
C903
47/25
C904
47/25
R906
100
Q903
2SD468 C
C905
47/25
ZD904
MTZJ8.2C
R903
47(1/6)
R910
150
R912
47
R917
4.7K
Q914
KRC107 M
C902
47/25
R901
68(3W)
R918
100
C920
47/25
Q913
2SB1375
ZD901
MTZJ130A
C901
0.022
C909
0.022
C906
0.022
D903
1N4004S
+12V(A)
+12V(M)
+4.6V(D)
GND(D)
GND
–41.4V–11.9V
–12.4V
–12.47V
–12.45V
1
2
13.2V
13.8V
13.2V
18.8V
4.8V
5.46V
12.5V
18.8V
13.1V
13.2V
18.8V
13.8V
1.35V
13.8V
13.8V
1
2
3
18.1V
8.4V
8V
8V
18.1V
7.8V
CD GND(D)
+7.3V(CD)
C911
0.022
D905
1SS133
1 2 3 4
5
6
7
2 3 4
5
6
7
1
BI903
2 3 4
5
6
7
8
9
10
11
2 3 4
5
6
7
8
9
10
11
1
BI901
1
CV11
2.2/50
CV13
2.2/50
CV16
470P
RV22
56K
RV24
1K
CV19
100/50
RV19
270
RV13
56K
CV15
470P
12.5V
18.8V
Q907
KRA102 M
–0.62V
0V
3
2
1
OUT1(L-CH)
OUT2(R-CH)
RELAY1
GND(A)
FAN CONT
SP LEVEL
GND(M)
H/P SW
+12V(M)
NC
FAN SW
POSISTOR
AMP
PROT
FWP01
CFWP01
CV24
47/63
Fusible
Fusible
TO MAIN PWB
P27 12-E
CNS903
POWER PWB-D
–B
+B
+B
+B
–12V(A)
GND(M)
+7.3V(CD)
GND(D)
+4.6V(D)
+12V(M)
+12V(A)
GND(A)
POWER
CD GND(D1)
GND(D3)
CNS901
TO MAIN PWB
P27 12-F
CNPP01
–VCC
–VCC
–VCC
–VCC
+VCC
+VCC
GND
GND
ZD902
MTZJ5.6A
R904
1.5K
11.8V
R905
22
GND(M)
+B
+B
+B
+B
–B
+VCC
+VCC
GND
GND
GND
GND
1.35V
3
FM SIGNAL
Fusible