Sharp CD-PC1881V Service Manual page 26

CD-PC1881V
A
CNS1B CNS1A
K
K 5 1 1
A
4 2
E 2
B
B
A
3 3 3
E
B 2 4 4
F
F 1 5 5
CNP1
C
PICKUP UNIT
!
1/16
K 5
E 4
A 3
B 2
D F 1
2200P
1
2 TR+
FO+
3
4
5
6
FO-
TR-
7
E
8
ACTUATOR
CNS2B CNS2A
CNP2
TR-
1 TR-
1
TR+
2 TR+
2
FO+
3 FO+
3
FO-
4 4 FO-
GND
GND
5 5
PD
PD
6 6
VR
VR
7
7
LD
LD
8 8
F
CD MOTOR PWB-D
M1
SPINDLE
G MOTOR
+
6 6 6
M
SPIN
- 5 5 5
M2
+ 4 4 4
SLED M
SLIDE
MOTOR
3 3 3
-
2 2 2
SW4
PU-IN
PICKUP
1 1 1
IN
H
• The numbers 1 to 12
• NOTES ON SCHEMATIC DIAGRAM can be found on page 38.
1
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+B
C1
LASER
R2
C15
47/10
DRIVER
1K
0.01
Q1
R1
KTA1504 GR
12
C2 C3
0.01 1/50
R46
560
6 4 6 3
6 2
LDO
LDS
-
9
FIN2
RF
1
REF -
+
FIN1
2
REF -
E
3
F
4
-
REF
C4
0.1
TB
5
R8
15K
R9
-
TE-
REF
6
100K
C54 TE
7
0.001
REF
+
- +
R10
C5
2.2K
0.033
TESI
8
C6
R11
0.033
6.8K
SCI
9
C7
0.1
R12
100
C8
TH
1 0
0.068
C9
R13
TA
0.047
1K
+
1 1
TD-
1 2
+
GEN
R14
-
R15 C10
27K
12K 180P
TD REF
R16 1 3 +
-
3.3K
JP
1 4
+
TO
+ -
1 5
8
FD
1 6
1 7 1
R17
33K
R18 C11
0.1
15K
R23
R20
1
10K
1K
R6
15K
R21
R19
1.5K
1K
R22
R24
820
47K
VREF
C12
0.1
1 TO
2 FD
3 FO (GAIN)
FO+
4
FO-
5
6 TR+
TR-
1 7 TR-
TR+
2 8
FO+
3 9
FO-
C76
4 1 0
0.022
1 1 GND
5
6 1 2
1 3
7
8 4 1
SL-
1 5
SL+
1 6
C36
1 7 SLD
100/10
1 8 VCC1
1 9 STANDBY
C55
2 0 Vref
100/16
2 1 MUTE
R56
6.8K
+B
SP+
6
SP-
5
SL_+
4
SL_-
3
CD_PUIN
2
1
are waveform numbers shown in page 39.
2 3
Figure 26 SCHEMATIC DIAGRAM (9/12)
6 1 6 0 59 5 8 5 7 5 6 5 5 5 4 5 3 5 2 5 1
LF2 VR
+ 2
-
REF
EFBAL
- FE1 +
DEF
-
FOSTA
REF -
HFL
+
TOSTA
VCR
CE
VCR
2FREQ
+
DRF
CL
-
LASER
-
VCR
VCR IC1 FSTA
LA9241M 8/12CM
SERVO AMP.
SLOF
REF
-
VCC
+
REF CV-
+
+
+
- TGL1 CV+
REF
GL
THDL
FSTA
REF JP-
+
THD JP
JP+
JP JPCLO
FSC
10
REF
REF
FOSTA OR
TO
GEN
+
REF REF
-
+
GEN -
REF
2 2 1 2 2 2 3 2 6
8 1 9 0 24 2 5 2 7 2 8
2 9
12
C17
0.001
C13
330P
R26
C16
82K
0.0047
R30
6.8K R33 R32
C14
1.2K 10K
0.01
R31
R27
R25 1.2K
39K
1.5K
R34
1K
LD_M+ 4 2
LD_M- 4 1
VCC4 40
M-
3 9
M+
3 8
SOL- 3 7
SOL+
3 6
3 5
3 4
C82
3 3
100/10
GND
32
C77
3 1
100/16
3 0
2 9
+B
VCC3 2 8
SP+ 2 7
SP- 2 6
SPO 2 5
(SPN)VCC2 24
SOLD 2 3
SOL-
2 2
4
– 26 –
+B
R45
4.7K
5 0 4 9
NC 4 8
C29
C28
4.7/25
0.1
4 7
TBC
FSC 4 6
DGND
4 5
REF SLI
44
R44
33K
C26
0.033
R42
47K
SLC
4 3
R40
C25
R39
3
5.6K
27P(CH)
1K
RFS-
4 2
REF
R43
56K
RFSM
RF
41
HF R38
C23
TP1 470
0.0027
CV+
40
CV-
3 9
4
SLOF
3 8
3
HFL
3 7
TES
3 6
TOFF
3
5
TGL
3 4 5
-
JP+
3 3
6
3 0 3 1 32
R36
7
C21
220K
0.0033
R35
220K
C35
R37
1/50
82K
D1
KDS193
+B
+B
+B
+B
1 2 3 4 5 6
CNP12
P23 12 - D
FROM DISPLAY PWB
5 6
2
1
3
2 R54
10K
1
7 8 9 1 0 1 1 1
CNS12