Read Sharp XL-HP500 (serv.man20) Service Manual online
– 15 –
XL-HP500E
XL-HP500H
Figure 15 BLOCK DIAGRAM (1/5)
+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
LC78646E
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
16.9344 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
+
–
–
+
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