Sharp CD-E500 Service Manual - Page 18

Ic401, Lc78646e, Servo/signal Control, Ic402, La6548d, Focus/tracking, Spin/sled, Driver

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Page 18 highlights

CD-E500 CD-E55/E44 TO MAIN SECTION R-CH AGND L-CH DGND +7V (+B5) MGND CL DI DO VWRQ DRF CD RES CE ROTATE CLOSE_SW DISC 1_SW DISC NO._SW OPEN_SW DOWN_SW UP_SW CNS205 3 2 1 6 5 4 3 2 1 CNS204 CONSTANT VOLTAGE Q412 CNP405 11 10 9 8 7 6 5 4 3 2 1 SW401 DISC UP/DOWN SW402 OPEN/CLOSE SW403 DISC NO. SW404 DISC 1 +3.3V 45 42 68 41 46 64 63 62 67 66 65 61 RCHO LCHO VDD5 LVDD RVDD DO DI CL DRF RES VWRQ CE 75 69 57 56 55 51 50 44 IC401 43 LC78646E 40 SERVO/SIGNAL CONTROL 37 28 19 6 48 XOUT 49 XIN 5 18 38 47 77 CONT4 25 CONT5 26 SLDO 23 SPDO 22 FDO 21 TDO 20 11 7 8 9 10 79 80 XL401 16.9344 MHz RFVDD ADAVDD VDD XVDD VVDD VREF FIN1 A FIN2 B TIN1 E TIN2 F LDS LDD CONSTANT VOLTAGE +3.3V Q411 LASER DRIVER Q409 +3.3V Q401,402 +7V Q403,404 Q405,406 Q407,408 + M M402 ROTATE - MOTOR - M + M401 UP/DOWN LOADING MOTOR ~ ~ 2 MUTE IC402 4 LA6548D 12 FOCUS/TRACKING/ 24 19 SPIN/SLED 22 27 DRIVER 9 +7V 1 VCC 7 30 VCC 29 VREF REG_IN REG_OUT 25 26 20 21 15 14 6 5 11 10 +3.3V VCC +5V VC E C A B C F LD MD FOCUS COIL TRACKING COIL CD PICKUP UNIT NM802 SPINDLE MOTOR + M - - M NM801 SLED MOTOR + SW1 PICKUP IN Figure 18 BLOCK DIAGRAM (3/4) - 18 -

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CD-E500
CD-E55/E44
– 18 –
Figure 18 BLOCK DIAGRAM (3/4)
+7V
+7V
M402
ROTATE
MOTOR
M401
UP/DOWN LOADING
MOTOR
+
–
+3.3V
+3.3V
TO
MAIN
SECTION
CONSTANT
VOLTAGE
CONSTANT
VOLTAGE
Q411
Q412
Q401,402
Q403,404
Q405,406
Q407,408
LASER
DRIVER
+3.3V
+3.3V
Q409
CD PICKUP
UNIT
IC401
LC78646E
SERVO/SIGNAL CONTROL
VDD
LDD
LDS
M
+
–
M
CNP405
CNS205
CNS204
TRACKING
COIL
FOCUS
COIL
SW1
PICKUP IN
SW403
DISC NO.
SW404
DISC 1
NM801
SLED
MOTOR
NM802
SPINDLE
MOTOR
M
M
XVDD
RVDD
LVDD
RFVDD
XL401
16.9344 MHz
CD
RES
CL
DI
DO
CE
ROTATE
UP_SW
DOWN_SW
OPEN_SW
DISC NO._SW
DISC 1_SW
CLOSE_SW
DRF
VWRQ
MGND
VCC
VCC
IC402
LA6548D
FOCUS/TRACKING/
SPIN/SLED
DRIVER
XIN
XOUT
RES
VWRQ
DO
DI
CL
CE
TIN2 F
TIN1 E
FIN2 B
FIN1 A
TDO
FDO
SPDO
SLDO
CONT5
CONT4
VDD5
LCHO
80
79
75
20
5
1
MUTE
2
30
VREF
REG_IN
REG_OUT
29
9
7
22
24
41
47
46
38
VVDD
77
10
VREF
11
9
8
7
6
25
21
20
14
15
26
5
11 10
11
8
10
9
6
7
4
5
2
3
1
61
62
63
69
57
56
55
51
50
43
44
40
37
19
6
28
26
25
23
22
21
27
4
12
19
3
1
2
+7V (+B5)
DGND
L-CH
1
5
6
4
AGND
R-CH
3
2
42
RCHO
45
68
64
65
66
DRF
67
48
49
ADAVDD
18
~
~
+
–
–
+
+5V
E
VCC
VC
C
A
B
C
F
LD
MD
DISC
UP/DOWN
OPEN/CLOSE
SW401
SW402