Sharp MD-R3 Service Manual page 41

IC750
M62472FP
ERVO CONTROL
48K
R758
10K 12K
–
HF–
42
+ + –
I/V AMP.
10K
48K
HF AMP. HFO
41
–
+ C773
HFI
0.001
60K HFOK
42
10K
–
+
HFD
39
+ –
C772
7.7K
HFC 0.033
38
50K
72K
72K
330K
FE AMP.
C771
MRC 0.068
+ –
MR 37
5P
Vcc
100K
36
TE1 AMP.
R780
APC
47K
Current
IREF
35
Reference
C770
10/16
C–FSR
33K FZC
34
C768
MCK
22/16
1K 47K
33
–
MLA
+
32
C780
TC Det
0.001
MSD
Focus 31
TE2 AMP. Search
I/F
+
ACLR
– 30
82K
DOUT
29
22K
JP1
28
22K
APC SW
27
RESET
– +
10 A
C767
TS AMP. 10K Vcc/2 2.2/50
26
10K
VREF
22K +
25
–
GND
24
C766 R751 C765
FSR 100K
10/16
–+ 0.1
23
20 A
FSR IN
SS AMP.
10K
R779
12K
+
22
–
FS AMP. C763
FS OUT
10/16
R811
10K
9 8 7 6 5 4 3 2 1
12 11 10
CNS903
P45 8 - H
TO DISPLAY PWB
NOTES ON SCHEMATIC DIAGRAM can be found on page 33.
7
+B
R760
C774
4.7K
9P
(CH)
R759
47K
R781
1.2K
C811
100/10
+B
C769
0.1
D
C
E
L
F
+B
R812
100K
C840
150P
CNP800
8 9
Figure 41 SCHEMATIC DIAGRAM (2/10)
CD SIGNAL
C817
10P
(CH)
R808 560K
R809 560K
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
IC800
M65821FP
SERVO/SIGNAL CONTROL
SIGNAL PROCESSOR
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
DIGITAL 5V
C806
0.001
C803
C819
270P
0.01
C808
0.1
IC800
21 0V
PIN
VOLTAGE
NO.
22 2.3V
1 5V 23 2.5V
2 0V 24
5V(0V)
3 0V(5V)
25 2.3V(0V)
4 0V(5V)
26 2.2V
5 0V(0V)
27 2.5V
6 0V(5V) 28 2.5V
7 5V 29 0V(2.5V)
8 5V(0.2V) 30 2.5V
9 5V 31 5V
10 5V 32 2.3V
+B 11 5V 33 2.5V
12 0.8V(4.3V) 34 2.5V
13 0.8V(4.3V) 35 2.5V
14 0V 36 2.5V
15 5V 37 0V(2.3V)
16 1.2V 38 0V(1.6V)
17 5V(0V) 39 0V(0.1V)
18 0.2V(2.3V) 40 2.5V
19 41
0.1V(2.8V) 0V
20 0.1V(2.8V) 42 0V
( ):PLAYBACK
:STOP
10
– 41 –
CD 5V
CD GND
+B
R883
X801
330
8.46MHz
C823
10P
(CH)
C822
10P
(CH)
DIGITALOUT
R805
33K
R803
3.3M
R804
2.2K
C807
0.022
C805
C809
0.56
47/10
CD SERVO PWB-C
11
MD-R3
CNS502
1 1
P47 8 - H
2 2
CNP502
3 3
TO MAIN PWB
4 4
P46 3 - H
1
CNS801
2
TO MAIN PWB
+B
12