Sharp CD-K491W Service Manual page 25

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