Sharp MD-R3 Service Manual page 45

HEADPHONES PWB-B2
J651
C661
0.001
1 1
2 2
HEADPHONES
3 3
C662
0.001
CNS651 CNP651
C663
0.1
CNW655
R963 R945
10K
12K
R946 R947
6.8K
12K
B A
SW901
JOG
DER
4V
4V
02V
02V
02V
03V
01V
V
.09V +B
C980
0.1
1 2 3 4 5 6
CNS903
CNP800
P41 7 - H
TO CD SERVO PWB
7
94 93
C925
C927
0.001
0.001
C926
C928
0.001
0.001
1 2
5V
C901
0.1
5V
R931 R935
10K 10K
H OPEN
RA901 1K
1 KEY 1 5.03V
RA902 1K
2
KEY 2 5.03V
RA903 1K
3
KEY 3 5.03V
4 KEY 4 0V
5
INI/MUTE IN 5.05V
RA904 1K
6
JOG AD 5.05V
RA905 1K
7 MLAS 0V
RA906 1K
8
MCK 0V
RA907 1K
9
MLAD 0V
RA908 1K
10 MSD 0V
11
JP1 0V
12
PU IN 0V
RA911 1K
13 LOCK/DRD 0.1V
RA912 1K
14
DAC MODE 5.05V
RA913 1K
15
DAC CLK/EX SCK 0V
RA914 1K
16 DAC DATA/EXT DATA 5.05V
RA915 1K
17
EXT LCK 0V
18
DFSO/DFS1 0V
19
(MD) DSTB 0.8V
RA919 1K
20 (MD) DSCK 2.9V
RA920 1K
21
(MD) K-DATA 4.1V
RA921 1K
22
(MD) MD DATA 0V
RA922 1K
23 D-OUT 0V
RA923 1K
24
(MD) LO/EJ 5.01V
25
CH CMND 4.6V
RA924 1K
C911
0.1
26 CH DATA 0.1V
RA925 1K
27
CH RDY 3.5V
RA926 1K
28
CH CLK 4.8V
RA927 1K
22
P-IN 1.8V
30 P-CNT 5.05
R923
220K
IC902
0V
PST9127
3
RESET
2 1
5.07V
5.07V
C909
C908
1
0.1
R906
1K
R940
1K
UN940
REMOCON
1
3
2
C940
100P
(CH)
5 4 3 2 1
7 8 9 10 11 12
CNS902
CNP503
P47 9 - H
TO MAIN PWB
8 9
Figure 45 SCHEMATIC DIAGRAM (6/10)
92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69
FL901
3 4 8
5 6 7 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
+B
C902
0.1
C903
0.1
+B
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
IC901
IX0240AW
SYSTEM
MICROCOMPUTER
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
+B
R904
4.7M
X901
X902
4.19MHz
32.768kHz
C904
C905
68P
12P
(CH)
(CH)
R941
100
C941
10/16
10
– 45 –
68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
-B
–31V
–27V
80
USEG08
–27V
79
USEG07
–29V
78
USEG06
–18V
77
USEG05
–23V
76
USEG04
–25V
75
USEG03
–25V
74
USEG02
–23V
73
USEG01
–14V
72
USEG00
–29V
71
USEG25
–25V
70
USEG26
–27V
69
USEG27
–18V
68
USEG28
–0.6V
67
USEG29
–16V
66
USEG30
–23V
65
USEG31
–25V
64
USEG32
–23V
63
USEG33
–23V
62
USEG34
–16V
61
USEG35
–25V
60
UDIG15
–29V
59
UDIG14
–29V
58
UDIG13
57 –29V
UDIG12
–29V
56
UDIG11
–29V
55
UDIG10
–29V
54
UDIG09
–29V
3
UDIG08
–29V
552
UDIG07
–29V
51
UDIG06
ANALOG RECORD SIGNAL
ANALOG PLAYBACK SIGNAL
MIC SIGNAL
DISPLAY PWB-B1
11
MD-R3
12