Sharp CD-K491W Service Manual page 24

CD-K491W
A
10
GND(D)
9
GND(D) 8
TO
DISPLAY PWB +4.6V(D) 7
P36 1-C
6
+12V(M)
COM
CNSD01
5
COM1
RES
4
RESET
DAT
DATA1 3
STB
2
STB
SCK
1
SCK1
B
TO
CD SERVO
PWB
GND(CD)
P23 12-C 1 1
+7.3V(CD)
2 2
CNP11
+12V(M)
3 3
C
RWC 1 1
WRQ 2 2
COIN 3 3
SQOUT
4 4
CQCK
5 5
RES 6 6
DRF 7 7
D_GND 8 8
SLD+ 9 9
SLD–
10
10
PUIN
11 11
D
OP/CL
12 12
DISC_NO
13 13
UP/DOWN
14 14
QG04
KTA1266 GR
GND(D)
1 1
E CL 2 2
DO 3 3
CE(CE1) 4 4
DI
5 5
+12V(A)
+12V(A) 6 6
GND(A)
GND(A)
7 7
TUN MUTE 8 8
L-CH 9 9
R-CH 10
10
SD 11 11
F
1
TA_FR SPEED
2
TA_MOT_SW
M +12V 3
TA_SOL
4
T2_A_FP 5
TA_CAM_SW 6
M_GND 7
T1_RUN 8
T2_RUN 9
T2_B_FP 10
T1_CrO 2 11
G
T2_CrO 2
12
TA_T1/T2 13
PB_MUT
14
PRE L-CH
15
HIGH_SP
16
PRE R-CH
17
GND(A)
18
+12V(A)
19
TA_BIAS 20
REC L-CH
54
REC R-CH
55
TA_R/P
23
REC_MUT 24
BEAT_CUT 25
TA_PB-EQ 26
GND(D)
27
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
1
GND(CD2)
GND(CD1)
GND(D)
+7.3V(CD)
+B
+12V(M)
+B
+4.6V(D)
+B
+B
+B
+B
+B
CFWU02
+B
CG08
0.001
+B
+B
+B
RG01
220K
+B
M2GND
+B
+B
2
Figure 24 SCHEMATIC DIAGRAM (3/20)
RG11
10K
RG23
10K
10/100 DH06
1SS133
9/50
SWF02
RF80
SPAN 1K
SELECTOR
RG24
10K
RF81
80 79 78 77 76 75 74 73 72
1K
MIC_DET
PL5
81
RF82 @ 1K H/P SW
PL4
82
AUTO_SCAN
RF83 @ 10K
PL0
83
RF84 1K CD_DNO_SW
@ PL6
80
PL1
84
CD_U/D_SW
RF85 @ 1K
PL2
85
RF86 @ 1K CD_O/C_SW
86 PL3
RF87 @ 1K DGTL1
87 P30
RF88 @ 1K
DGTL2
P31
88
VSS
VSS3
89
VDD
90 VDD3
AC3_RES
RF91 @ 1K
91 P32
AC3_SS
RF92 @ 1K
P33
92
AC3_SIN
RF93 @ 1K
P34
93
AC3_SO
RF94 @ 1K
P35
94
AC3_SCK
RF95 @ 1K
1 P06
95 P00
RF96 @ 1K V1/V2
P01 2 P07
96
RF97 @ 1K DEM0
97 P02
DEM1
RF98 @ 1K
P03
98
P04(PCCL)
99
P05
10 0
AC32SO IC 94
1 2 3 4 5 6 7 8 9
QG92
KTC3199 GR
7
SO
RG94
10K
+12V(A)
–15V
–B
+B
RH11
150K
RH12
1K
2
– 8
(1/2) 1
+ 4
3
CH29
0.022
–B
–B
RH14
RH17 DH11
560K
1.5K 1SS133
CH13
CH30
RH15
CH15
330P
0.0056
33K
0.22/50
(ML)
DH12
RH20 CH17 RH21
0.047(ML) 560K 1SS133
1.5K
RH22
CH18
CH16
33K
1/50 0.22/50
CH20
RH25 RH26
1SS133
0.015 560K
1.5K
RH27
CH19
33K
0.47/50
0.22/50
RH31
CH23
RH30
560K
0.0047 1SS133
1.5K
CH22
RH32
CH24
0.1
33K
0.22/50
(ML)
RH36 DH15
RH35 CH26
560K 1SS133
1.5K 0.0012
CH25
RH37
CH27
0.027
33K
0.22/50
(ML)
3 4
– 24 –
71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53
51 PC5
ICF01
IX0254AW
SYSTEM CONTROL
MICROCOMPUTER
PA0
30
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
RG38
100K
RG25 @ 10K
+B
GND(A)
TUN L
TUN R
RH13
150K
6 –
(2/2) 7
+
5
ICH11
NJM4558M
MOTOR DRIVER
DH16
1SS133
16KHz
SPE-1
RH16
470K
DH17
1SS133
63Hz
SPE-2
RH24
470K
DH18
1SS133
DH13
250Hz
SPE-3
RH29
CH21
470K
DH19
1SS133
DH14
1KHz
SPE-4
RH34
470K
DH20
1SS133
+B
4KHz
SPE-5
RH39
470K
GND(A)
REC L-CH
REC R-CH
PRE L-CH
PRE R-CH
5
+4V(µ-CON)
+B
GND(µ-CON)
+4V
+B
52 51
FRNT_RLY
RF50 1K
PC4
50
FAN CONT RF49 1K
PC3 49
VOLT_SW
RF48 1K
PC2
48
AMP RF47 1K
PC1
47
PB_MUT
RF46 1K
PC0 46
TA_T1/T2 RG55 1K
PB7 45
REC_MUT
RF44 1K
PB6 44
TA_PB-EQ
RF43 1K
PB5
43
TA_R/P
RF42 1K
PB4 42
BEAT CUT RF41 1K
PB3 41
TA_BIAS
RF40 1K
PB2 40
FR SPEED(M)
RF39 K
PB1
39
HIGH_SP
RF38 1K
PB0
38
TA MOTOR RF37 1K
PA7
37
TAPE_SOL
RF36 1K
RG17
PA6
36
CAM_SW 10K
RF35 1K
PA5
35
T2_CRO S RF34 1K RG20 10K
PA4 34
T1_CRO S RF33 1K RG21 10K
PA3
33
T2_B-FP S RG22 10K
RF32 1K
PA2
32
T2_A-FP S
RF31 1K
PA1
31
RG15
10K
RF30
1K +B
+B
RG16
+B
47K
RG19
47K
RG26
10K
+12V
–1
AUX 2
AUX 1
TAPE L
TAPE R
AUX 1
AUX 2
84 18 80 85 18 81
VIDEO1 IN VIDEO2 IN
TO PRE SECTION
P28 2-G
6