Service manual
– 25 –
CD-K491W
Figure 25 SCHEMATIC DIAGRAM (4/20)
7
8 9 10 11 12
CG04
0.01
DG05
1SS133
RG37
1K
RG36
3.3K
QG01
KRC102 M
QG03
KTC3199 GR
RG32
100
ZDF01
MTZJ3R3A
RG31
1K
DG02
1SS133
DG04
1SS133
CG03
3.3/50
CG02
0.01
QG02
KTC3199 GR
RG34
10K
RG30
150
RG29
150
CG01
470/10
RG35
1K
DG03
1SS133
RG33
10K
LG01
2.2µH
RG20 10K
RG21 10K
RG22 10K
RG17
10K
RG15
10K
RG39
82
RESET
POINT
+4V
–15V
+12V(A)
R OUT
L OUT
C IN(C OUT)
SL IN(LS OUT)
SR IN(RS OUT)
SW IN(SW OUT)
CD GND(D1)
GND(D)
CD GND(D2)
+7.3V(CD)
+12V(M)
+4.6V(D)
TO PRE SECTION
P29 9-G
GND(D)
VR CLK
VR DATA
VR LA TCH
FUNC A
FUNC B
+4V
CONTROL
AUX 2
R-CH OUT
L-CH OUT
GND(A)
R-CH OUT
VIDEO2 IN IN
P
RE SECTION
P28 2-G
U
X 2
X
1
+5V(AC32A)
CD GND(D2)
CD GND(D1)
+7.3V(CD)
GND(M)
VGND
GND(D3)
GND(D4)
+5V(AC32B)
VR DI
CLK2
+B
+B
+B
+B
+B
–B
RESET
1
2 3
+B
+B
+B
+B
+B
+B
+B
+B
–B
–B
28
18
19
27
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
66
69
59
60
61
62
63
18
19
64
56
57
58
54
55
47
48
49
50
51
52
53
46
3
7
POWER
VOLT SW
SP PROT
POSISTOR
H/P SW
SP LEVEL
FAN CONT
FRNT RLY(1)
+4.6V(D)
GND(D)
SW RLY(4)
REAR RLY(3)
S-MUTE
CENT-MUTE
REAR-MUTE
SWF-MUTE
AMP CONT
+12V(A)
GND(A)
–15V
+12V(M)
GND(A)
+12V(A)
IN(R)
IN(L)
RR IN
QS_SPRED
OUT(L)
OUT(R)
RL IN
C IN
RL OUT
RR OUT
C OUT
QS_MO
VCAN
OUT(L)
IN(L)
GND(A)
+12V(A)
OUT(R)
IN(R)
GND
MIC
QS_AC
+B
+B
+B
+B
+B
–B
–B
+B
–B
+B
+B
+B
67
68
69
70
71
72
73
54
55
58
56
57
76
27
76
57
86
18
87
58
55
54
77
28
19
18
56
AC3-SW-CHOUT
AC3-RS-CHOUT
AC3-LS-CHOUT
AC3-C-CH OUT
AC3-R-CH OUT
AC3-L-CH OUT
SPEC ANA
–15V
+12V
AGND
AGND
RT IN
LT IN
TUN L
TAPE L
AUX 1
AUX 2
TUN R
TAPE R
AUX 2
AUX 1
78
15
80
81
82
17
84
85
SR IN(RS OUT)
SL IN(LS OUT)
C IN(C OUT)
SW IN(SW OUT)
LT IN
RT IN
V-SW(V1/V2)
L OUT(LIN)
R OUT(RIN)
AGND
1
CFWU01
2
3
4
5
6
7
8
9
10
+B
–B
+B
1
CFWU02
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
+5V
A+12V
AGND
VGND
+5V(AC3_A)
+5V(AC3_A)
(AC3_B)
A-15V
GND(D3)
GND(D4)
SO
DGTL1
SP CONF
DEM0
DEM1
SCK
AC3_RES
SI
AD RES
SS
DGTL2
FWA01
TO DOLBY PWB
P35 8-H
CFWA01
FROM
KARAOKE
PWB
CNSU02
1
20
FWA02
TO DOLBY PWB
P34 5-H
CFWA02
10
1
+B
–B
AC3-C-CH OUT
AC3-L-CH OUT
AC3-R-CH OUT
AC3-LS-Ch OUT
AC3-RS-CH OUT
AC3-SW-CH OUT
76575658
55
54
TO PRE SECTION
P28 4-G
81
188580
MAIN PWB-A(1/5)
FM SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
TO QSOUND SECTION
P31 7-H
CENT RLY(2)
TO VOLUME SECTION
P30 6-H
TO VOLUME SECTION
P30 4-A
8
9
7
6
5
4
3
2
1
P32 3-A