Sharp MD-R2H Service Manual page 34

MD-R2H
A
B
C
R1100
27
C1101 R1107
1 1
D
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13
CNP1101
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13
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
+
M901 M
MD SPINDLE
–
+
M902
M
MD SLED
–
+
M903 M
MD LOADING
–
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 43.
1
TP1141
C1110
0.47
48 47 46 45 44 43 42
EFMAGI EFMAGC
RF2 EFM
1
AGC
R
RF1
2
&
DIFF
RF4
SW
3
RF3
DIFF
4
C1102
IC1101
1
REFI
IR3R55
5
C1103
SIGNAL
1
PROSESSOR
6
REFO
RFADD
7
BIAS
C1104
0.027
TCGI
8
R1105
390K
AIN
9
BIN
10
EIN
LOGIC
11
FIN
12
13 14 15 16 17 18 19
C1105
1
TP1129
TP1150
L1102
0.47µH
R/P
R1166
C1145
1.2K
0.033
12 11 10 9 8 7 6 5 4 3 2 1
3
12 11 10 9 8 7 6 5 4 3 2 1
12
2
C1252
120P C1251
(CH) 0.027
1 1
2 2
MAGNETIC
HEAD
Q1251 D D
2SK2909 G
G
S S
D1252
SB0209CP
Q1254
2SK1473
D
D
G G
Q1253 S
S
2SK1473
LEAD IN
TP1605
LEAD IN
1
1
HINF
TP1604
HINF
2
2
GND
GND
3
3
LOADING
LOADING TP1602
4
4
MINF
MINF TP1601
5
5
C1421 C1422
0.022 0.022
R1617
R1612
TRDRF
TRDRR
16
TN
TP
15
FP
FN
CN1602
SLD+
1 1
TP1607
SLD– TP1606 FODRR
2
2
FODRF
CN1603
SP+
1
1 TP1608
SP– TP1609
2
2
TP1610
CN1604
TRY+
1 1
TRY–
2
2
2
Figure 34 SCHEMATIC DIAGRAM (5/6)
TP1131
C1107
0.0047
C1106 TP1142
0.47
41 40 39 38 37
ADIPI
C1119
36 TP1140
330P
R1155
56K
4
ADIPO
35 TP1139
34
ADLPFO
33
TP1138
22KO
ADIP
32
AGC
22KI
5
31
WBO
LPF HPF
30
R1102 TP1137
560
TCGO
29
R1154
TP1136
22K
AOUT
28
R1153
TP1135
22K
BOUT
27
R1152
TP1134
22K
EOUT
26
R1151
TP1133
22K
FOUT
25
R1150
TP1132
22K
20 21 22 23 24
L1251
47uH
R1223
680
TP1260
EFMO
9 8
Q1252 14 13 12 11 10
2SK2909
1 2 3 4 5 6 7
HDON
R1425
2.7K
LEAD IN
HINF
LOADING
MINF
TP1616
Q1601
C1605
2SA1314C
100/10
R1613
C1604 R1610 R1614
27K
56P(CH) 30K
C1610 18K
10
R1609 R1611
47K
1.5K 12K
56K
REG+ CH3IN
1
42
REGB
+ OUT3
2 41
–
IN3–
IN1+ 1.25V
3
40
C1601
4 39
VBS1 VBS2
1
Vm1
5
38
Vm2
IN1–
6 37
IN3+
OUT1 C1602
7
36
1
T– C1652 VM1–
VM3–
8 35
SPN
820P(J)
T+
9
34
SPP
VM1+ VM3+
10
33
GND
11 32
VM2+
F+
12
31
F– VM4+
13 30
VM2– VM4–
14 29
OUT2 SLP
R1652 VM5+
IN2–
15 28
10K
SLN
VM5–
OUT5
27
16
IN2+
IN5–
17 MUTE1 26
R1650
18 MUTE2 25
10K
IN5+
IN4+
19 SS.GND 24
VREF
20 23
IN4–
21 22
VREFO OUT4
C1631
1 IC1601
M56758FP
5ch MOTOR DRIVER
3 4
– 34 –
EFMO-I EFMO-I
AOUT-IN
AOUT-IN
EOUT-IN EOUT-IN
TCG TCG
BOUT-IN BOUT-IN
FOUT-IN FOUT-IN
WBO-I
WBO-I
TP1130
C1121
1
R/P
R1401
1K
MINF
HINF
R1404
1K
C1402
R1426 0.047
R1472
1K
47K
1
2
LDVAR
LDVAR
3
R1406
4 ADJS
3.3K
5
6 LOAD IN
R1420
7 ERROR
1K
8
BYTE
9 CNVSS
STID OUT
10
11 SEACH OUT
RESET
12 RESET
13
14 VSS
MCCK
MCCK
15
16 VCC
17
DINT
DINT
18
LOADIN DSENSE
DSENSE
19
ST-ID
20
C1412 SERCH
21 SERCH
680P
MDRSW
22
23 FSW
VARI-P SW
24
25 P-DOWN
R1407
HDON
26
3.3K
LD+
27 LD+
LD–
LD–
28
CIN
29 CIN
INNSW
INNER
30
J1405
10K
C1656
0.0056 SPDRR
R/P
SPDRF
C1657
0.0056
1
2 3 2
1
Q1403
RN2404
SLDRR
SLDRF
R1667
TP1612
22K
R1666
22K
L1601
C1661
R1669
1µH
100/10
6.8K
5
1
TP1275
100 99 98 97 96 95
TP1274 EFMMON
1
2 AVCC
C1202
3 EFMI
100 99 98
1
4 AGND
5 AIN
6 EIN
7 TCG
8 BIN
9 FIN
VBAT
10
11 WBI
C1211
12 VDD1
1
13 DGND
14 TEST0
TEST1
15
16 TEST2
TP1220
R1653
17 X176KO
100K
FODRF
18 FODRF
FODRR R1651 100K
19 FODRR
TRDRF R1657 120K
20
TRDRF
TRDRR R1655 120K
21 TRDRR
SLDRF R1661 82K
22
SLDRF
SLDRR R1659 82K
23 SLDRR
SPDRF R1665 62K
26 27 28
SPDRF
24
SPDRR
SPDRR
25
R1663
62K
26 27 28 29 30 31
11
10
T
C
A4
A5
A6
A7
A8
VREF3.2V
R1423
TP1405
10K
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
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
IC1401
68
IX0227AW
L3CLK
67
MD SYSTEM MICROCOMPUTER
L3MODE
66
L3DATA 65
GND
64
63
VCC
62
EEPK 61
EEPD
60
EPCS
59
EEPRO
58
57
56
55
SYSD0 54
49 50 SYSD1
53
31 32
SYSD2 52
SYSD3
51
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
Q1402
1 RNC1404
IC1402
2 3 2 3
S29294A
5 DI SK 4
Q1401 1
3
RN2404
6 DATA 3
CS
R1416
10K
7 GND VCC 2
Q1404
RNC1404
8 1 C
PRTCT
0
2
E -PROM
6