Sharp GX-CH170X Service Manual page 23

+B
+B
SERVO/SIGNAL
IC802
LC78622E
0V
0V
0V
C841
R858
0.047
680
0V
C842
0.047
2.2V
R857
27K
5V
1V
R856
1.2K
0V
2.5V
2.5V
0V
0V
0V
5V
+B
+B
+B
DIGITAL GND
C887
0.022
AUDIO GND
L-CH
R-CH
NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
7
F
E
B
A
K
C847
R860
0.01 1K
64 63 62 57 56 55 35 52
61 60 59 58 54
DEFI
1
µ-COM
INTERFACE
2
TA1
PDO
3
4 VVSS
ISET
2K x 8 BIT
5
RAM
VCO CLOCK ERROR
6 VVDD
OSC CORRECT
FR CONTROL FLAG CONTROL
7
VSS
8
EFMO
9
SYNC-DETECT
SLICE LEVEL
EFM DEMODULATE
EFMIN
CONTROL
10
TEST2
11
CLV+
CLV
12
DIGITAL
CLV–
SERVO
13
V/P
14
HFL
15
SERVO EXTERNAL
COMMAND
TES OUTPUT
16
23 24 25 26 27
17 18 19 20 21 22
+B
L801
0.82µH
+B
C846
330/10
Q804
2SD468 C
+B +B
R877
220
R878 C889
ZD801
100 Z ONLY
10/50
MTZJ5.6B
D803
RL104
SERVO 7.4V
8 9
Figure 23 SCHEMATIC DIAGRAM (2/7)
R801
1K
C802 C801
47/10
0.01
+B
51 50 49
EFLG
48
SBSY
SUB-CODE 47
XVSS
46
XIN
XL801
45
X-TAL 16.93MHz
XOUT
GENERATOR 44
XVDD 43
MUTER
42
RVDD R874
41
100
RCHO
40
C868
R876
4FS 1BIT
10/16
10K
RVSS 39
DIGITAL DAC
LVSS R875
38
FILTER
10K
LCHO
37
C867
R873
LVDD 10/16
36
100
MUTEL
35
NC 34
TEST4
33
DIGITAL
OUT
R880
100
28 29 30 31 32
+B
C843 C873
100/10 0.01
FOCUS/TRACKING
/SPIN/SLIDE DRIVER
IC804
BA5920FP
1 + + 28
2
27
–
–
3
26
4
25
– + –
+
5 24
23
6
VCC
22
7
+
–
VCC
21
8
– + + –
20
9
10 19
F+
– –
11 18
F–
+
12 + 17
13 16
+
–
14 15
+B
10
– 23 –
GX-CH170X/CH170Z
PICKUP UNIT
1/16
LD
MON
K
E
A
K
K
1 1 1
E E
B
2 2 2
A A
3 3 3 F
B
B
4 4 4 C
F F
5 5 5
LT0H30M1
2200P
2200P
TR– TR–
1 1 1 TR+
TR+ TR+
2 2 2
FO+
FO+
FO+
3 3 3
FO–
FO–
4 4 4 FO–
GND GND
5 5 5
PD TR–
PD
6 6 6
VR
VR
ACTUATOR
7 7 7
LD
LD
8 8 8
CNS801
FO+
FO–
TR–
TR+
C870
0.0022
C869
0.0022
TR+
TR–
FO–
FO+
SP+ +
M701
6 6 6
M
SPIN
SP–
MOTOR
5 5 5
–
SL+
4 4 4
SL– +
M702
3 3 3
M
SLIDE
PU-IN
2 2 2
– MOTOR
1 1 1
SW4
PICKUP IN
CD MOTOR
PWB-E
11 12