Sharp CD-XP300 Service Manual - Page 19

Block Diagram 1/3

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R-CH AGND L-CH DGND +5V (+B7) +5V (+B8) DGND (DRIVER) +6.5V (+B4) WRQ DRF CE DO DI CL CD RES CLAMP SW O/C DISC NO CNP4 CNS4 BI4 TO MAIN SECTION TO DISPLAY SECTION CNP7 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 CNP8 CD-XP300/CD-XP3300 SW1 OPEN/ CLOSE SW2 CLAMP SW3 DISC NUMBER M3 T/T UP DOWN M LOADING MOTOR +- 1 2345 6 1 2345 6 1 2345 6 Q3 42 61 CE 62 CLK 63 DI 64 DO 65 WRQ 66 RES 67 DRF 48 XOUT 49 XIN 5 18 38 47 77 LCHO VDD5 CONT4 CONT3 CONT2 68 25 70 71 75 69 57 56 55 51 50 44 IC1 43 LC78645NE 40 CD SERVO 37 28 19 41 46 CONT5 26 SLDO 23 SPDO 22 FDO 21 TDO 20 7 8 9 10 79 80 +3.3V XL1 33.8688 MHz RFVDD ADAVDD VDD XVDD VVDD LVDD RVDD FIN1 FIN2 TIN1 TIN2 LDS LDD +3.3V Q2 CONSTANT VOLTAGE ZD1 3.3V LASER DRIVER Q1 +3.3V +5V(+B7) 1 2 17 25 41 42 38 39 40 VCC4 35 IC2 29 M63001FP 22 +5V 18 VCC1 FOCUS/TRACKING/ 24 VCC2 21 23 SPIN/SLED 14 28 VCC3 DRIVER 8 45 6 7 15 16 26 27 ~ ~ Figure 19 BLOCK DIAGRAM (1/3) - 19 - M1 SPINDLE MOTOR + M - - M M2 SLED MOTOR + SW4 PICKUP IN PICKUP UNIT FOCUS COIL TRACKING COIL

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– 19 –
CD-XP300/CD-XP3300
Figure 19 BLOCK DIAGRAM (1/3)
+5V
CNS4
BI4
CNP4
M3
T/T UP DOWN
LOADING
MOTOR
+
–
+3.3V
TO
DISPLAY
SECTION
TO
MAIN
SECTION
CONSTANT
VOLTAGE
Q2
LASER
DRIVER
+3.3V
Q1
+5V(+B7)
PICKUP
UNIT
IC1
LC78645NE
CD SERVO
VDD
LDD
LDS
M
SW3
DISC
NUMBER
SW2
CLAMP
SW1
OPEN/
CLOSE
CNP8
CNP7
TRACKING
COIL
FOCUS
COIL
SW4
PICKUP IN
M2
SLED
MOTOR
M1
SPINDLE
MOTOR
M
M
Q3
XVDD
RVDD
LVDD
RFVDD
XL1
33.8688 MHz
O/C
CLAMP
SW
CD
RES
CL
DI
DO
CE
DRF
WRQ
+6.5V (+B4)
DGND (DRIVER)
+5V (+B8)
VCC3
VCC2
VCC4
VCC1
IC2
M63001FP
FOCUS/TRACKING/
SPIN/SLED
DRIVER
XIN
XOUT
RES
WRQ
DO
DI
CLK
CE
TIN2
TIN1
FIN2
FIN1
TDO
FDO
SPDO
SLDO
CONT5
CONT2
CONT3
CONT4
VDD5
LCHO
80
79
75
20
5
40
18
24
23
14
8
21
22
29
35
41
47
46
38
VVDD
77
10
9
8
7
15
1
2
17
25
42
41
39
38
4
7
6
5
16
28
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
43
44
40
37
19
28
26
23
22
21
3
2
7
1
6
8
9
10
6
8
7
+5V (+B7)
DGND
L-CH
3
5
4
AGND
R-CH
1
2
42
68
25
70
64
65
66
DRF
67
48
49
ADAVDD
18
+3.3V
DISC NO
~
~
ZD1
3.3V
+
–
–
+