Pickup Unit - Sharp CD-PC672 Service Manual

CD-PC672
A
CNS1B CNS1A
K
5 1
B
E
4 2
A
3 3
3
B
2 4 4
F
1
5 5
C

PICKUP UNIT

1/16
K
5
E 4
A
3
B
2
D
F
1
1
TR+
2
FO+
3
4
5
6
FO–
7
E
TR–
8
ACTUATOR
CNS2B CNS2A
TR–
1 1
TR+
2 2
FO+
3 3
FO–
4 4
GND
5 5
PD
6 6
VR
7 7
LD
8 8
F
CD MOTOR PWB-D
M1
+
SPINDLE 6
M
SPIN
MOTOR
–
5
M2 +
4
G
M
SLED SLIDE
3
–
MOTOR
PU-IN
2
SW4
PICKUP IN 1
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
1
R2
1K
C1
C15
47/16
0.01
R1
22
C2
C3
0.01
1/50
Q1
2SA1318
IC1
LA9241M
SERVO AMP.
K
1 1
A
2
B 2
E
3
F
4
C4
CNP1 R8
0.1/50
5
15K
R9
TE
6
100K
7
R10 C5
2.2K 0.033
8
R11
C6 0.033
6.8K
9
R12 C7
100 0.1/50
C8
10
0.068
C9 C10
11
0.047 180P
12
R15
R14
12K
27K
13
R16
14
3.3K
15
16
R17
33K
C11
0.1
VREF
C12
0.1
TR–
1
TR–
TR+
TR+ 2
FO+
FO+ 3
FO– C76
FO– 4
0.022
5
GND
6
PD
VR 7
LD
LD 8
CNP2
C36
100/16
C55
100/16
SP+
6 6 6
SP–
5 5 5
SL_+
4 4 4
SL_–
3 3 3
CD_PUIN
2 2 2
1 1 1
CNP3
2 3
Figure 20 SCHEMATIC DIAGRAM (1/12)
C34
0.33/50
64 63 61 60 55 54 53 52 51 50 49
62 59 58 57 56
LDS
VCC1
–
+
FIN2
RF
REF
–
+
REF
FIN1
FE1 EFBAL
–
REF – DEF
+
+
E FOSTA
–
HFL
+
F TOSTA
VCR
VCR
REF –
2FREQ
+
DRF
TB
LASER
–
VCR
+
VCR
TE– REF – FSTA
+
8/12CM
TE
SLOF
REF
REF
VCC
TESI
REF
SCI
TGL1
GL
THDL FSTA
REF THD REF
TH
JP
JP FSC
REF
REF FOSTA
GEN
TO GEN
REF
TD
GEN
JP
REF
TO
FD
FD– FA FE SPI
17 18 19 20 21 22 23 24 25 26 27
C17
0.001
R18
R26
15K 82K
R30
R31
6.8K
R24
R25 1.2K
R27
47K
1.5K
39K
C18
0.47/50
1 TO
LD_M+ 42
2
FD LD_M– 41
3 FO (GAIN) 40
VCC4
4 FO+
M– 39
5 FO– M+ 38
6 TR+ SOL–
37
7 TR– 36
SOL+
8
35
9
34
C82
10 33
100/16
GND
32
11 GND
31
12
30
13
C77
29
14
100/16
SL–
15 VCC3 28
SL+
16 27
SP+
SLD SP– 26
17
18 VCC1 SPO 25
STANDBY (SPN) 24
19
VCC2
Vref 23
20
SOLD
MUTE
21 SOL– 22
4
– 20 –
NC 48
C28
0.1
TBC
47
FSC 46
DGND
45
CE R44
SLI
44
REF
33K
CL
C26
0.033
R41
R42
47K
47K
SLC
43
C25
R40
R39
27P
5.6K
1K
RFS–
42
REF
CV– R43
56K
CV+
RFSM
RF 41
HF
R38
JP–
TP1
470
JP+
CV+ 40
JPCLO
CV–
39
SLOF SLOF
SLOF
38
OR
SLOF HFL
37
REF
TES
36
TOFF
35
TGL
34
JP+
33
SLD
28 29 30 31 32
C20
47/16
C19
1/50
R32
10K
R33
1.2K
R34
3.3K
R35
220K
GND
C35
R37
1/50
82K
D1
1SS133
+B
CNP12
1 2 3
5
C23
0.0027
C22
220P
C57
0.001
R47
10K
C37
0.022
4 5 6
7 8
CNS12
FROM DISPLA
P29 12-D
6