Sharp CD-BA250H Service Manual page 22

CD-BA250H/CD-BA2600H
PICKUP UNIT
A
VREF
B
C
TR+
FO+
D
FO–
TR–
GND
CD MOTOR PWB-F
E
M1
+
SPINDLE
M
SPIN
MOTOR
–
M2
+
SLED
M
SLIDE
MOTOR
–
SW4
PU-IN
PICKUP IN
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 39.
1
CD SERVO PWB-C
VCC
VCC
7 7 7 7
VREF
6 6 6 6
E
E
5 5 5 5
A
A
4 4 4 4
B B
3 3 3 3
F F
2 2 2 2
C C
1 1 1 1
CNP1
TR–
TR–
1
1 1 1
TR+
TR+
2
2 2 2
FO+
FO+
3
3 3 3
FO–
FO–
4
4 4 4
GND
5
5 5 5
PD
PD
6
6 6 6
VR
VR
7
7 7 7
LD
LD
8
8 8 8
SP+
1 1 6
6
SP–
2 2 5
5
SL+
4
3 3 4
SL–
4 4
3
3
PUIN
5 5 2
2
GND
6 6 1
1
2
Figure 22 SCHEMATIC DIAGRAM (1/9)
CD SIGNAL
R6
33K
R5
12K
R4
12K
R3
33K
C38
0.01
C39
100/10
MUTE
21 20 19
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
3 4
– 22 –
R7
47
LASER
DRIVER
18 17 16 15 14 13 12 11 10
IC2
M63001FP
FOCUS/TRACKING/
SPIN/SLED DRIVER
5
C5
0.047(ML)
R10
27K
C6
1
0.1
2
R12
3
330
C7
TP3
4
100P
C8
5
0.0047
6
7
TP1
C50
8
22P TP2
9
(CH)
10
C10
11
10/50
C9
12
100/10
13
C11
14
0.22/50
15
4
16
C12
17
100P
18
19
20
2
1
9 8 7 5
6 4 3 2
L
C41
100/10
6