– 21 –
CD-DD4500
Figure 21 BLOCK DIAGRAM (1/3)
+3.3V
+5V
CNS4
BI4
CNP4
M3
T/T UP DOWN
LOADING
+3.3V
TO DISPLAY SECTION
TO MAIN SECTION
CONSTANT
VOLTAGE
Q2
LASER
DRIVER
+3.3V
Q1
+5V
PICK UP UNIT
IC1
LC78645E
CD SERVO
VVDD
LDD
LDS
M
SW3
DISC
NUMBER
SW2
CLAMP
SW1
OPEN/
CLOSE
CNP8
CNP7
TRACKING COIL
FOCUS COIL
SW4
PICK UP
IN
M2
SLED
MOTOR
M1
SPINDLE
MOTOR
M
M
R-CH
Q3
XVDD
RVDD
LVDD
ADAVDD
RFVDD
XL1
33.8688 MHz
OC. DISC NO
CLAMP SW
CD RES
CLK
DI
DO
CE
DRF
WRQ
+5V (+B5)
+5V (+B5)
DGND
L-CH
AGND
VCC3
VCC2
VCC4
VCC1
IC2
M63001FP
FOCUS/TRACKING/
SPIN/SLED
DRIVER
XIN
XOUT
RES
WRQ
DO
DI
CLK
CE
TIN2
TIN1
FIN2
FIN1
TD0
FD0
SPDO
SLDO
CONT5
CONT5
BI7
CONT2
CONT3
CONT4
RCHO
RVSS
LVSS
LCHO
80
42
79
75
20
5
40
18
24
23
14
8
21
22
29
35
41
47
46
7
10
9
8
7
15
1
2
1
2
17 25
42
41
83
39
4
7
6
5
16
82
26 27
3
1
6
4
5
2
3
1
6
4
5
2
3
1
6
4
5
2
5
4
71
61
62
63
69
57
56
55
51
50
40
39
37
19
28
26
23
22
21
3
2
7
1
6
8
9
6
1
5
4
3
2
45
43 44
25
70
64
65
66
48
49
18
Summary of Contents for CD-DD4500
Page 70: ...CD DD4500 70 MEMO ...
Page 87: ...CD DD4500 16 MEMO ...