Sharp MD-X7H Service Manual page 71

PICKUP IN
SW702A
OPTICAL
PICKUP
IC1
IC2
+5V
VOLTAGE
Q81
REGURATOR
+7.3V (B2)
TO MAIN UNIT
(TO µ-CON)
M702
M
SLED
MOTOR
M701
M
SPINDLE
MOTOR
7 6
13 12
31 30 25 24
IC5 1
5
M56748FP
14
FOCUS/TRACKING/
22
8
SPIN/SLIDE DRIVER
32
9
10
11
36 35 34 29 28 27 26 20
+B1
CAM SWITCH
SWB101
SWB102
SWB103
SWB104
TRAY SWITCH
SWB105
SWB106
SWB107
SWB108
Figure 35 BLOCK DIAGRAM (2/4)
4 3
TO
15
FD
16
SPO
27
SP
23
29 SLD
LA9241M
SL–
30
SL+
SERVO AMP.
31
DRF
54
50 CLK
CL
51
DAT
52
CE
53
44 43 41
~
20
53
LC78623D
58
SERVO SIGNAL
61
CONTROL
3 7
IC92
1
TA7291S
MAIN CAM MOTOR
9
DRIVER
IC91
1
TA7291S
TRAY MOTOR
9
DRIVER
3
7
– 35 –
2 1
62
IC1
64
~
40 32
9
12 10
45
XIN
XOUT
IC2 44
6
VVDD
VDD
23
LVDD
36
RVDD
41
XVDD
43
39 38 37
40
6
MOB1
5
M MAIN CAM
MOTOR
MOB2
M
6
TRAY
MOTOR
5
MD-X8H
LASER
DRIVER
Q1
+5V
XL1
16.934MHz
+5V