Block Diagram - Sharp CD-BA250 Service Manual

TO MAIN SECTION
1 2 3 4 5
61 CE
62 CLK
63
DI
64 DO
65
WRQ
66
RES
XOUT
48
XIN
49
5 7 47
18
+3.3V
Q2
CONSTANT
VOLTAGE
+5V
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TO DISPLAY SECTION
1 2 3 4 5 6 7 8
6
Q3
42 43 44 45 25 70 71
IC1
LC78645E
CD SERVO
CONT5
SLDO
SPDO
FD0
TD0
41 46 80
7 8 9 79
10
LASER
DRIVER
Q1 +3.3V
Figure 17 BLOCK DIAGRAM (1/3)
– 17 –
SW2
SW1 CLAMP
OPEN/
CLOSE
1 2
1 2
1 2
9
75
69
57
56
55
51
50
40
37
28
19
1 2
26
23
22
21
18
VCC1
20
40
VCC4
+5V
FOCUS/TRACKING/
24
VCC2
23
82
VCC3
4 5
SPINDLE
MOTOR
CD-BA250/CD-BA2600
SW3
DISC
NUMBER
M3
T/T UP DOWN
M
LOADING
3 4 5 6
3 4 5 6
3 4 5 6
41 39 83
17 25 42
35
IC2
29
M63001FP
22
21
SPIN/SLED
14
DRIVER
8
6 7
15 16 26 27
M1
M
M2
M PICK UP
SLED
MOTOR
SW1
IN