Block Diagram - Sharp MD-R3H Service Manual

MD-R3H
OPTICAL PICKUP UNIT
FOCUS COIL
4 4
3
TRACKING COIL
2
1
5 5
6 6
MD
7
8 8
LD
1 1
2
3
4 4
5
6 6
7 7
CNP800
JP1
6
D-OUT
7
PU-IN
8
LD-ON
2
1 MLAS
3 MCK
4
MLAD
5
MSD
MOD0
9
SBQS
10
11 MOD1
12 LOCK/DRD
3
2
1
LASER DRIVER
7
Q751
CD+5V
2
3
5
A+C
B+D
EF BAL
VR751
TRACKING
ERROR APC OUT
BALANCE
SERVO
APC IN
+5V
FE OUT
VR753
FOCUS
OFFSET
FS+
SERVO
TC IN
+5V
VR754
TRACKING
OFFSET
TE+
TE–
TE OUT
VR752
TRACKING
GAIN
TS–
1/2Vcc
TS OUT
SS FIL
SS–
SS OUT
FS–
Figure 34 BLOCK DIAGRAM (1/4)
IC750
M62472FP
SERVO CONTROL
48K
10K
11K
–
1
+ –
+
10K
22K
HF AMP
48K
11K
2 –
+
E
60K
HFOK
3
–
10K
10K
+
F
+ –
4
50K
7.7K
72K 72K
330K
5
TE AMP
+ –
MR
6
5P
100K
7
APC
CURRENT
REFERENCE
8
33K FZC
9
1K 47K
–
+
10
TC DET
TE
11
FOCUS
SEARCH
TE2 AMP
+
12
– I/F
13
82K
14
22K
TG
15
22K 22K
16
– +
RESET
10UA
10K
17
10K
+
22K
–
18
19
– + FSR
20UA
10K
FS AMP
20
SS AMP
+
–
21
– 34 –
CD+5V
VOLTAGE
REGULATOR
Q701
IC700
BA5914FP
FOCUS/TRACKING/
SPIN/SLIDE DRIVER
HF–
42
HFO
41
HFI
40
HFD
39
HFC
38
MRC
37
Vcc
CD+5V
36
IREF
35
C-FSR
34
MCK
33
MLA
32
MSD
31
ACLR
30
DOUT
29
JP1
28
APC SW
27
VCC/2
26
VREF
25
GND
24
FSR IN
23
FS OUT
22
CH1-OUTA D. BUF
1
– +
CH1-OUTB
2
D. BUF
CH1-INA
3
CH1-INB
4
TR-B
5
– +
6
VREG OUT
MUTE
7
GND
8
CH2-INB
9
– +
CH2-INA
10
CH2-OUTB
11
CH2-OUTA
12
– +
GND
13
OP OUT
14
CD+5V
VDD1
1
DIGITAL
VDD
EFFK EFM
40
SYNC
SYCLK 3
PROT
IREF
16
PHASE
LPF
18
HFD 17
HF
HF
19
TLC
20
SCCK
41
SBCO
39
SCAND
5
EMP 2
CRCF
6
7 S
SBQS
ANALOG
VDD
15
VDD2
CD+5V