Sharp XL 1700 - Executive Microsystem Service Manual page 24

XL-1700/1700C
A
CD PICK-UP UNIT (308)
B
HPC-3LX
VCC
LD
C2A
MON
GND
– C
+
E
–
+
– A
+
– B
+
– F
+
C
1/2VCC 1/2V
GH6C605B3A1
VR1A
C4A
PO+
TR–
TR+
FO–
ACTUATOR
D
E
CD MOTOR PWB-C
SPINDLE
MOTOR
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
• The numbers 1 to
1
CD PWB-A3
C3A
+5V
VREF
1 1
+5V
2 2
E E
3 3
C C
4 4
A A
5 5
B B
6 6
C C
7 7
F F
8 8
GND GND
9 9
LD LD
10 10
VR VR
11 11
PD
PD
12 12
FO+ FO+
13 13
TR– TR–
14 14
TR+ TR+
15 15
FO– FO–
16 16
CNW801
CNP801
CNP703A
CNW802
+
SP+
SP+
M701
M
6 6 6
SP–
SP–
–
5
5 5
SP+ SL+
+
4 4 4 4
SL–
SL–
M702
M M
3 3 3
SLED
PU-IN PU-IN
–
MOTOR 2 2 2
GND
GND
SW702 1 1 1
PICKUP IN
17 are waveform numbers shown in page 34.
2 3
Figure 24 SCHEMATIC DIAGRAM (3/8)
+B C801
0.022
C802
47/16
R802 82K
R803 82K
R804 47K
R805 82K
R806 82K
R801 47K
C815
L805
2.2 H
0.022
+B
3
2
+B
28 27 26 25 24 23 22 21 20 19 18 17 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14
7.3V
C871
0.022
4
– 24 –
+B
A_3.3V
A3.3V
C807 100/10
8
C812
100/10
C806
0.022
3.3V
0V
1 VCC GND 24
1.6V 1.6V
R818
FNI RFN
2 23
10K
1.1V
1.6V
3 FPI RFO 22
2.3V
1.6V
9
4 TPI AGCI 21 R816
1.6V C810 100
TNI RFGC 20
5
0.1
1.2V
0V
6 MDI RFGO 19
1.6V
2.6V
LDO RAS RFGO
7 18
C811
0V 0.7V
10
8 SEL RFRP
17
0.1 VREF
R817
1.6V 1.6V
TEBC FEN
9 16
47K
1.6V
1.6V
10 TEN FEO
15
1.6V
1.6V
11 TEO VRO 14
R856
2.0V
RFDC GVSW
12 13
1K
IC802 C867
0.1
TA2157F
HEAD AMP.
REDC
FEO
R815
820
+B
15
3.3V
Q802
2SB562 C
+B
5
C817
22P
C818
R821
0.1
8.2K
C819
100/10
+B
6