Block Diagram - Sharp CD-PC3500 Service Manual

TO MAIN SECTION
1
75 76 45 46 47 48
65
CE
66 CL
DI
67
68
DO
69
INT
LC78641E
70 WRQ
SERVO/SIGNAL
CONTROL
71
RES
72
DEF
52
XOUT
XL1
16.9344MHz
51
XIN
VDD5V
5 18 36 44 49 50
73
CONSTANT 17 18 19 20 21 22
Q1
VOLTAGE
+3.3V 30
LA9235M
SERVO AMP.
23
11
9
1 2 3 4
+5V
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TO DISPLAY SECTION
(TO IC601)
2 1 2
3 4 5 3 4
Q2
32 31 30
74
64
40
19
13
IC2
3
33
CONT5
26
SLD0
25
SPD0
24
FD0
TD0
23
7 14 15 16
IC1
LASER
DRIVER
Q3
7 8
Figure 17 BLOCK DIAGRAM (1/3)
– 17 –
7
5 6 8 9 10
1 2
18
VCC1
40
VCC4
24
VCC2
+5V
23
28 VCC3
+3.3V
4
M1
M
SPINDLE
MOTOR
M2
M
SLED
MOTOR
CD-PC3500
SW2 SW3
SW1
CLAMP DISC
OPEN/
CLOSE NUMBER
M3
T/T
M
UP/DOWN
MOTOR
-
1 2 5 6
3 4
1 2 5 6
3 4
1 2
3 4 5 6
17 25 41 42 38 39
35
29
IC3
22
M63001FP
FOCUS/TRACKING/
21
SPIN/SLIDE DRIVER
14
8
5 6 7 15 16 26 27
SW4
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