Sharp MD-R3 Service Manual page 48

MD-R3
A
B
C
TP1129
R1100
27
C1101 R1107
1 1
D
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
CNP1101
FLEXBLE
PWB
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
E
LDOUT
1 8
VCC
EXT.C
2 GND 7
3 6
L.DON
APC
4 5
LVV
L.DVAR
PICKUP UNIT
WRITE
PRO R1902
1.8K
DIRECT
R1901
470
SW1952
F
READ IN
SW1953
MD PLAY BACK
R1904
820
SW1954
MD RECORD
SW1955
LOADING
SW1956
MD SWITCH PWB-G
G
+
M902 M
MD SLED
–
+
M901
M
MD SPINDLE
–
+
M903 M
MD LOADING
–
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 33.
1
TP1141
C1110
0.47
48 47 46 45 44 43 42 41 40 39
EFMAGI EFMAGC
RF2
EFM
1
AGC
R
RF1
2
&
RF4 DIFF
SW
3
RF3
DIFF
4
C1102
IC1101
1
REFI
ADIP
IR3R55
5
AGC
C1103 SIGNAL
1
PROSESSOR
6
REFO
RFADD
7 BIAS LPF HPF
C1104
0.027
TCGI
8
R1105
390K
AIN
9
BIN
10
EIN
LOGIC
11
FIN
12
13 14 15 16 17 18 19 20 21 22
C1105
10
TP1150
L1102
0.47 H
R/P
R1166
C1145
1.2K
0.033
9 8 7 6 5 4 3 2 1
3
12
9 8 7 6 5 4 3 2 1
2
C1252
120P C1251
(CH) 0.027
1 1
2 2
MAGNETIC
HEAD Q1251
D D
G
2SK2909
Q1252
G
2SK2909
S S
D1252
SB0209CP
Q1254
2SK1473
D D
G G
Q1253
S
S
2SK1473
LEAD IN
LEAD IN TP1605
1
1
HINF
HINF TP1604
2
2
GND
GND
3
3
LOADING
LOADING TP1602
4
4
MINF
MINF TP1601
5
5
C1421 C1422
CN1901
CW1901 0.022 0.022
Q1601
C1605
2SA1314C
100/10
C1610
10
R1617
R1609
47K
1.5K
R1612
56K
TRDRF
C1601
TRDRR 1
16
TN T– C1652
820P
TP T+
15
FP F+
FN F–
CN1602
SLD+ R1652
1 1 TP1607
10K
SLD– TP1606 FODRR
2
2
FODRF
R1650
CN1603
10K
SP+
1
1 TP1608
SP– TP1609
2
2
TP1610
C1631
CN1604
1
TRY+
1 1
TRY–
2
2
2 3
Figure 48 SCHEMATIC DIAGRAM (9/10)
TP1131
C1107
0.0047
C1106 TP1142
0.47
38 37
C1119
ADIPI
330P
36 TP1140
(CH)
R1155
56K
ADIPO 4
EFMO-I
TP1139
35
AOUT-IN
34
EOUT-IN
ADLPFO TCG
33
BOUT-IN
TP1138
22KO FOUT-IN
32
WBO-I
22KI
5
31
WBO
30
R1102 TP1137
560
TCGO
29
R1154
TP1136
22K
AOUT
28
TP1135 R1153
22K
BOUT
27
R1152
TP1134
22K
EOUT
26
R1151
TP1133
22K
FOUT
25
R1150
TP1132
22K
23 24
TP1130
C1121
1
R1426
L1251
1K
47uH
R1223
680
TP1260
EFMO
9 8
14 13 12 11 10
1 2 3 4 5 6 7
HDON
R1425
2.7K
LEAD IN
HINF
LOADING LOADIN
MINF
C1412
TP1616
680P
R1613
C1604 R1610 R1614
27K
56P(CH) 30K 18K
R1611
12K
INNSW
REG+ CH3IN
1 42
REGB C1656
+ OUT3
2
41
– 0.0056
IN3–
IN1+ 1.25V
3
40
4 39
VBS1 VBS2
Vm1
5 38
Vm2
IN1–
6
37
IN3+
OUT1 C1602 C1657
7 36
1 0.0056
VM1–
VM3–
8 35
SPN
9
34
SPP
VM1+ VM3+
10 33
GND
11 32
VM2+
12 31
VM4+
13 30
VM2–
VM4–
14 29
OUT2
SLP
VM5+
IN2–
15 28
SLN
OUT5 VM5–
16 27
IN2+
IN5–
17 MUTE1 26
18 MUTE2 25
IN5+
IN4+
19 SS.GND 24
R1667
VREF
20 23
IN4– 22K
21 22
VREFO OUT4
R1669
IC1601 6.8K
M56758FP
5ch MOTOR DRIVER
4
– 48 –
1
TP1274
EFMO-I
AOUT-IN
EOUT-IN
TCG
BOUT-IN
FOUT-IN
WBO-I
C1211
1
TP1220
FODRF
FODRR R1651
TRDRF R1657
TRDRR R1655
SLDRF R1661
SLDRR R1659
SPDRF R1665
SPDRR
11
10
R/P
R1401
1K
MINF
HINF TP1405
R1404
1K
C1402
0.047
R1472
47K
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1
2
LDVAR
3 LDVAR
R1406
4 ADJS
3.3K
5
LOAD IN
6
R1420
7 ERROR
1K
8 BYTE
9 CNVSS
STID OUT
10
11 SEACH OUT
RESET
12 RESET
IC1401
13
IX0232AW
VSS
14
MCCK
MD SYSTEM MICROCOMPUTER
15 MCCK
16 VCC
17
DINT
DINT
18
DSENSE
DSENSE
19
20 ST-ID
SERCH
SERCH
21
MDRSW
22
23 FSW
24 VARI-P SW
P-DOWN
25
R1407
26 HDON
3.3K
LD+
27 LD+
LD–
28 LD–
31 32
CIN
CIN
29
30 INNER
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
31 32
J1405
10K
SPDRR
R/P
SPDRF
Q1402
1
RNC1404
3 3
2 2
1
Q1401 1
2 3 2 3
RN2404
Q1404
Q1403 1
RNC1404
RN2404
SLDRR
SLDRF
TP1612
R1666
22K
L1601
C1661
1 H
100/10
5
TP1275
100 99 98 97 96 95 94
1 EFMMON
AVCC
2
C1202
3 EFMI
100 99 98
1
4 AGND
5 AIN
6 EIN
7 TCG
8 BIN
9 FIN
VBAT
10
WBI
11
12 VDD1
13 DGND
14 TEST0
TEST1
15
16 TEST2
R1653
17 X176KO
100K
18 FODRF
100K
19 FODRR
120K
20 TRDRF
120K
21 TRDRR
82K
22 SLDRF
82K
23
SLDRR
62K
26 27 28
24 SPDRF
SPDRR
25
R1663
62K
26 27 28 29 30 31 32
TP
C1
A4
A5
A6
A7
A8
VREF3.2V
R1423
10K
XRST
80
DIGCD
79
DIGEX
78
82 81
DFS1 77
DFS0
76
DAPON
75
ADPON
74
A/B 73
LDON
72
PCNT1
71
PCNT0
70
69
68
L3CLK
67
L3MODE 66
L3DATA 65
GND
64
63
VCC 62
EEPK
61
EEPD
60
EPCS
59
EEPRO 58
57
56
55
SYSD0 54
SYSD1
49 50 53
SYSD2
52
SYSD3 51
IC1402
S29294A
5 4
DI SK
6 DATA 3
CS
R1416
10K
7 GND VCC 2
8 C1
PRTCT 1
0.
E 2 -PROM
6