Sharp CD-C492 Service Manual page 41

RA48
270
80 79 78 77 76 75 74 73
3.3V
81
RA50
4.0V
82
1K
1.0V
SDA
83
81 VDD
3.3V
84 VDD
82 RESET
0V
85
SDE
RA52 0V
TCK
86
1K
0V
87 SCK
0V
RA53
88
TDI
1K
0V
SI
89 DOLBY AC-3/5.1CH
RA54 0V
GND
90
270
1.6V
91 SCKA
1.6V
92 WSA
RA55 3.3V
VDD
93
270
0V
94 SDF
81
SPFTX/SDG
1.6V
95 WSB
82
D15
D17
96
1.6V
SCKB
97
RA60
98 D16
10K
99
0V
100
CA37
1 2 3 4 5 6 7 8 9
0.001
CA38
0.1
CA39
0.1
RA40
1K
CB20
0.001
QB01
2SD468 C
3.4V 5.4V
4.0V
CB12
100/10
+B
SW_ON/OFF
+B
–B
CA96
47/25
CA95
47/25
A+12V
CB22
0.001
CB23
0.001
9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9
20 1
CFWU2 CFWU1
TO MAIN PWB TO MAIN PWB
P31 12-F P3112-E
7
CA46
0.1
72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54
50 RD
49 A16
ICA18
ZR38600
MPEG2 AUDIO
DECORDER
32
D9/PP5
31 A11
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
QA03
KRC107 S
3
-7.8V 2
7.7V
RA83
RB12
RB11 1
-7.8V
100K
390
390
+B
2
CB11 7.8V
1
47/25
3
2
1
ZDB11
MTZJ3.9B 0V
3
SW-CH
C-CH
RS-CH
LS-CH
CB04
0.022
CB03
0.022
ICB01
NJM4580M
8
OPE AMP. 4
3
+
0V
L-CH
CB01
1
0V 100P
–
RB05
2
0V
100
RB03
RB07
100K 27K
RB01
22K
CB05 220P
CB06 RB02
220P 22K
RB08 RB04
100K 27K
– 6
R-CH
0V CB02
7
0V 100P
+
RB06
5
0V
100
CB17
0.001
10
CFWA01
10
FWA1
8 9
Figure 41 SCHEMATIC DIAGRAM (16/20)
ICA17
TC7WU04F
DUAL 2-INPUT
NAND GATE
CA54 +5V
18P(CH)
8 6
7 5
1 2 3 4
CA55
22P(CH)
RA44
270 CA45
0.1
CA44
0.1
53 52 51
CA43
50
0.001
49
3.3V
D4/PP0
48
RA43
D5/PP1 47
10K
A15 46
3.3V
VDD
45
0V
GND 44
A14 43
D6/PP2
42
D7/PP3
41
A13 40
TOO 39
A12 38
0V
GND 37
0V
36
SELEX7
35
VDD
RA42
0V
34
SO 1K
D8/PP4 33
32
31
CA41
28 29 30
0.1
CA40
0.1
ICA22
BU4066BCF
SELECTOR
-7.8V
5
3 4
0V
-7.8V
6
CA93
0V
2.2/50
8
9
CA88
0V
2.2/50
7.7V
12
RA80
0V
100K
10 11
0V
7.7V
13
0V
2 1
0V
14 7
7.8V -7.8V
CA92 CA91
0.022 0.022
10
– 41 –
CD-C492/492C
RA03 22
CA58
RA04 22
220/6.3
CA56 0.01
CA57 10/16
0V 4.6V
1 CKS TTL 24
4.6V
2 DVDD DZF 23
0V 4.6V
3 VREF
DVSS 22
0V
4 XT0 AVSS 21
2.2V
XT1 AVDD
5 20
3.9V 2.3V
6 PD VCOM
19
1.6V L-CH
2.3V
7 BICK AOUTL 18
R-CH
0V 2.3V
CA63
8 SDATA AOUTR 17
10/16
1.6V
9 LRCK BVDD 16
4.6V
0V
SMUTE DIF1
10 15
0V
4.6V
DFS DIF0
11 14
0V 0V
DEM0 DEM1
12 13
CA67
10/16
CA68
10/16
RA05 22
RA06 22
CA71 0.01
CA72 10/16
4.6V
1
CKS TTL 24
CA74
DVDD DZF 23
2
0.01
3 DVSS VREF 22
4 21
XT0 AVSS
CA75 0.1
2.2V
XT1 AVDD 20
5
CA76 0.1
2.3V
3.9V
PD VCOM
6 19
C-CH
1.6V 2.3V
7 BICK AOUTL 18
SW-CH
0V 2.3V
8 SDATA AOUTR
17
1.6V
LRCK BVDD 16
9
0V
RA71
10 SMUTE DIF1 15
27K
0V
11 14
DFS DIF0
DEM0 DEM1 13
12
0V 0V CA81
0.015
CA82
0.015
CB18
0.001
ICA21
NJM4580M(1/2)
OPE AMP.
0V
+
5
0.1V
7
CA87 –
6
0V
0.001 4
8
7.8V
RA78
RA79
18K
1K
CA86 CA85
0.022 0.022
+B
C-CH
RS-CH
LS-CH
RA89
22K
RA90
22K
DOLBY PWB-G
11
CA59
0.01
CA60 0.1
CA61 0.1
CA62 100/16
RA61 27K
RA62 27K
CA65 0.015
CA66 0.015
RA65
27K
RA66
27K
CA69
0.015
CA70
0.015
L-CH
R-CH
12