Sharp MD-X60 Service Manual page 56

MD-X60
A
B
C
R1100
27
C1101 R1107
4.7 1
28 27 26 25 24 23 22 21 20 19 18 17 16
CN1101
D
FLEXIBLE
PWB
LDOUT
1 VCC 8
EXT.C
2 GND 7
3 6
APC L.DON
E
4 5
LVV
L.DVAR
MD PICKUP UNIT
WRITE
PRO
SW1952
DIRECT
LEAD IN
F
SW1953
PLAY
SW1954
RECORD
SW1955
LOADING
SW1956
MD MECHANISM SWITCH PWB-G
G
+
M902
M
MD
SLED –
MOTOR
+
M901
M
MD
SPINDLE
–
MOTOR
+
M903
M
MD
LOADING –
MOTOR
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 62.
1
TP1141
C1110
0.47
0.7V 48 47 46 45 44 43
EFMAGI EFMAGC
RF2
0.7V EFM
1
AGC
R
RF1
0.7V
2
&
RF4 DIFF
0.7V
SW
3
0.7V RF3
DIFF
4
C1102
1
1.6V REFI
IC1101
5
IR3R55
C1103
1
1.6V RF SIGNAL
6
REFO PROCESSOR
0.7V
RFADD
7 BIAS
C1104
0.027
TCGI
8
1.6V
R1105
390K
AIN
9
1.6V
1.6V BIN
10
1.6V EIN
11
FIN
1.6V
12
13 14 15 16 17 18
C1105
1
TP1129
TP1150
L1102
0.47µH
R/P
R1166
C1145
1.2K
0.033
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
3
12
2
C1252
C1251
120P
(CH) 0.027
1
2
MAGNETIC
HEAD
Q1251 4.4V D
D
2SK2909
2.6V G
S
1.4V
1.4V
15V
D
15V
G
Q1253
S
2SK1473
0V
TP1605
LEAD IN LEAD IN
1
1
HINF HINF TP1604
2 2
R1902 GND
GND
3 3
1.8K
LOADING LOADING TP1602
4
4
R1901
MINF MINF TP1601
470 5 5
C1421
0.022
R1904
820
16
15
CN1602
SLD+
1 1
TP1607
SLD– TP1606
2 2
CN1603
SP+
1 1
TP1608
SP– TP1609
2 2
TP1610
CN1604
TRY+
1 1
TRY–
2
2
2 3
Figure 56 SCHEMATIC DIAGRAM (13/15)
TP1131
C1107
0.0047
TP1142
C1106
0.47
C1119
330P
42 41 40 39 38 37
ADIPI
1.6V
36 TP1140
R1155
56K
4
ADIPO
1.6V
35 TP1139
0V
34
ADLPFO 1.6V
33
TP1138
22KO 1.6V
ADIP
32
AGC
22KI
1.6V 5
31
WBO
1.6V
LPF HPF 30
R1102 TP1137
560
TCGO 1.6V
29
R1154
TP1136
22K
AOUT 1.36V
28
R1153
TP1135
22K
BOUT
1.35V
27
R1152
TP1134
22K
EOUT 1.78V
LOGIC
26
R1151
TP1133
22K
FOUT
1.78V
25
R1150
TP1132
22K
19 20 21 22 23 24
L1251
47uH
R1223
680
TP1260
EFMO
4.4V
G
2.6V
9 8
14 13 12 11 10
Q1252
2SK2909
S
D1252
SB0209CP
Q1254
2SK1473
D
1 2 3 4 5 6 7
G
2.6V
HDON
S
0V
R1425
2.7K
LEAD IN
HINF
LOADING
MINF
C1422
TP1616
0.022
Q1601
C1605
2SA1314C
100/10
5.45V 4.4V R1613
C1604 R1610
R1614
27K
C1610 56P(CH) 30K 18K
4.8V
10
R1611
R1617
R1609
12K
47K 1.5K
R1612
56K
REG+ CH3IN
1.25V
1
42
4V REGB + OUT3
2 41
–
IN3–
1.5V IN1+ 1.25V
3
40
TRDRF
C1601
5.5V 4
39
VBS2
VBS1
TRDRR 4.7
5.5V Vm1
5 38
Vm2
1.5V IN1–
6 37
IN3+
5V OUT1
7
0V 36
T– C1652
TN 2.7V VM1–
VM3–
8 35
820P
TP T+
2.8V 3V
9 34
0V VM1+ VM3+
10 33
GND
0V 0V
11 32
VM2+
FP F+
2.7V 2.7V
12 31
FN F– VM4+
2.76V
13 30
VM2–
1.6V VM4–
14 29
OUT2
R1652 VM5+
1.6V IN2–
15 28
10K
FODRR
1.6V 1.62V OUT5 VM5–
16 27
IN2+
FODRF
3.15V IN5– 1.6V
26
17 MUTE1
R1650 3.15V 1.6V
18 MUTE2 25
10K
IN5+
1.23V
0V IN4+
19 SS.GND 24
1.23V
1.6V VREF
23
20
IN4–
1.6V 1.6V
21 22
VREFO OUT4
C1631
1 IC1601
M56758FP
5-ch MOTOR DRIVER
4
– 56 –
EFMO-I
AOUT-IN
EOUT-IN
TCG
BOUT-IN
FOUT-IN
WBO-I
TP1130
C1121
1
R/P
MINF
HINF
R1404
C1402
R1426 0.047
1K
LDVAR
R1406
3.3K
R1420
1K
RESET
MCCK
DINT
LOADIN DSENSE
SERCH
C1412
680P
0V
3.2V
R1407
3.2V
3.3K
LD+
0V
LD– 0V
CIN
2V
INNSW
3.2V
J1405
10K
1.68V
C1656
1.68V
0.0056 SPDRR
R/P
1.64V
5.5V
5.5V
SPDRF
1.64V
C1602 C1657
4.7 0.0056
2.4V
SPN
SPP
0V
1
3.18V
2.7V
2 3 2
2.8V
SLP
0V 3.15V 3.15V
2.7V
SLN Q1403 3.18V
RN2404
SLDRR
SLDRF
R1667
TP1612
22K
R1666
22K
C1661 L1601
R1669
1µH
100/10
6.8K
5
1
TP
EFMO-I
C
AOUT-IN
EOUT-IN
TCG
BOUT-IN
FOUT-IN
WBO-I
C12
1
TP1220
R165
100K
FODRF
FODRR R1651
TRDRF
R1657
TRDRR R1655
SLDRF R1661
SLDRR R1659
R1665
SPDRF
SPDRR
R16
62K
1
10
R1401
1K
TP1405
1K
R1472
47K
100 99 98 97 96 95 94 93 92 91
1 0V
2 0V
3 LDVAR 0.2V
4 ADJS 3.2V
5 0V
6 LOAD IN 0V
7 ERROR 3.1V
8
BYTE 0V
9 CNVSS 0V
0V
10 STID OUT
SEACH OUT 0V
11
12 RESET 3.18V
IC1
13
IX024
VSS 0V
14
15 MCCK 1.5V MD SY
16 VCC 3.2V
MICROCO
17 3.2V
DINT
18 3.1V
0V
19 DSENSE
ST-ID 0V
20
SERCH 0V
21
3.15V
22 MDRSW
23 FSW
VARI-P SW
24
25 P-DOWN
26 HDON
LD+
27
LD–
28
31 32
29 CIN
30 INNER
31 32 33 34 35 36 37 38 39 40
Q1402
3.2V
1 RNC1404
2 3 2 3
2.3V
3.2V 0V 0V
Q1401 1
0V
3
RN2404
0V
1
Q1404
RNC1404
6