Sharp CD-K491W Service Manual page 35

CA47
0.001
+B
RA48
270
80 79 78 77 76 75 74 73
RA50
3.3V
81 VDD
1K
4.0V
82 RESET
1.0V
83 SDA
RA51
3.3V
84 VDD
SDC
79
270
0V
85 SDB
SDE
80
RA52 0V
86
TCK
1K
0V
87
SCK
0V
88 TDI
0V
89
SI
RA53
4 0V
90
GND
1K
3.3V
91 SCKA
DOLBY AC-3/5.1CH MPEG2
1.6V
92 WSA
5 3.3V
93 VDD
0V
SDF
94
3.3V 1 A0
WSB
95
GND
2
96 D17
1.6V
97 SCKB
D16
98
RA60 0V
SPFTX/SDG
99
10K
100 D15
CA37
1 2 3 4 5 6 7 8 9
0.001
CA38
0.1
CA39
0.1 RA40
1K
+B
+B
B20 CA50
001 100/10
QB01
2SD2012
VOLTAGE REGULATOR
UN-SWITCHED
3.4V 5.4V
RB12
390
4.0V
CB13
0.022
+B
+B
–B
CA96
47/25
CA95
47/25
ZDA02
MT ZJ8.2A
ZDA01
MT ZJ8.2A
+B
A+12V
+B
CB22
0.001
10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9
20 1
CFWU01
FWU02
MAIN PWB
TO MAIN PWB
25 12-F
P25 12-E
7
DUAL2–INPUT NAND GATE
+B
CA52
10/16
CB27
0.1
72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56
WR
51
52 CS
ICA18
RZ38600
AUDIO DECORDER
29 GND
VDD
30
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
25
QA01~QA03:SWITCHING
QA03
KRC107 S
3
-7.8V
1
-7.8V
RA83
+B
100K
–B
RB11
QA02
390
KRA107 S
2
-7.8V
1
CB11 7.8V
47/25
7.8V
3
2
7.8V
ZDB11 1
0V
+B
MTZJ3.9B
QA01
3
KRC107 S
0V
SW-ON/OFF
+B
–B
SW-CH
C-CH
RS-CH
LS-CH
CB04
0.022
–B
+B
CB03
0.022
7.8V
-7.8V
8
0V
4
3
+
0V
1 CB01
0V
L-CH 100P
RB05
–
2
RB03
100
RB07
27K
100K
RB01
22K
CB05 220P
CB06 220P
RB08
100K
RB04 27K
0V
–
6
R-CH
0V
7
+
RB06 0V
5
100
ICB01
NJM4580M
CB17
0.001 OPE AMP.
CFWA01
10
10
FWA01
8
Figure 35 SCHEMATIC DIAGRAM (14/20)
ICA17
TC7WU04U
+B
CA54
18P(CH)
8 7 6 5
1 2 3 4
CA55
22P(CH)
+B
RA44
CA45
270
0.1
CA44
0.1
CA43
55 54 53 52 51
0.001
RD
50
A16 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
SELEX7
36
RA42
VDD 35
1K
0V
SO 34
D8/PP4 33
32
D9/PP5
A11
31
CA41
26 27 28 29 30
0.1
CA40
0.1
+B
ICA22 BU4066BCF
MIC/AUX INPUT SELECTOR
-7.8V
5
0V
4
3
-7.8V
2
+B
6
CA93
0V
2.2/50
9 8
7.7V
12
0V
0V
10 11
+B
7.7V
13
+B
0V
0V
2
1
14 7
7.8V -7.8V
CA92
CA91
0.022
0.022
RB02
22K
CB02
100P
9 10
– 35 –
+B RA03 22 +B
+5V
RA04 22
CA56 0.047
CA57 10/16
ICA19
AK4321
0V 4.6V
1 TTL 24
CKS
+B 4.6V
2
DZF 23
DVDD
0V 4.6V
3 VREF
22
DVSS
0V
4 XT0 AVSS 21
2.2V
5 AVDD 20
XT1
3.9V 2.3V
6 VCOM
19
PD
2.3V
L-CH
1.8V
7
BICK AOUTL 18
R-CH
0V 2.3V
8
SDATA 17
AOUTR
1.6V
9
16
LRCK DEM1
0V 4.6V
10 15
BVDD
SMUTE
+B
0V
4.6V
11 14
DIF1
DFS
0V 0V
DIF0
12 DEM0 13
20BIT 2CH
D/A CONVERTER
+B
+B
CA67 10/16
CA68
10/16
+B
RA05 22
+B
RA06 22
CA71 0.047
CA73
220/6.3
CA72 10/16
CB26
0.001
4.6V
0V
TTL
1 24
CKS
+B
DZF
2 DVDD
23
0V
VREF
3 DVSS 22
0V
AVSS
4 XT0
21
CA75 0.1
2.2V
AVDD
5 20
XT1
CA76 0.1
3.9V 2.3V
VCOM
6 PD 19
2.3V C-CH
1.6V
7 BICK AOUTL 18
SW -CH
0V 2.3V
8 SDATA
AOUTR 17
1.6V
9 LRCK DEM1 16
+B
0V
10 SMUTE BVDD 15
0V
DIF1
11 14
DFS
DIF0
DEM0
12 13
2.3V
ICA20
AK4321
+B
+B 20BIT 2CH
+B D/A CONVERTER
CB18
0.01
ICA21
NJM4580M
2 3
OPE AMP.
0V
1
+
5
0.1V
(1/2)
7
CA87 0V
–
6
-7.8V
0.001
CA88 4
8
2.2/50
7.8V
RA79 RA78
1K 18K
CA85
CA86
0.022
0.022
+B
–B
C-CH
RS-CH
LS-CH
RA89
22K
RA90
22K
DOLBY PWB–G
11
CD-K491W
CA58
220/6.3
+B
CA59
0.001
CA60
+B
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
+B
CA81
0.015
CA82
0.1
+B
+B
L-CH
R-CH
12