Sharp QT-CD111 Service Manual page 11

R871
C850
4.7K
9
0.1
C845
4.7/50
48 NC
C 47
C 46
D 45
LI 44
R838
C834
33K
0.033
C833
R836
R837
0.001
47K
47K
R833
C 43
5.6K
42
S–
C830 C832
R834
27P
2P R832
1K
(CH)
(CH) 56K
41
M
C831
R835 0.0027
V+
40
470
V– 39
OF
38
FL
37
S 36
C822
FF 35
220P
34
33
32
R810 D802
82K 1N4148
C851
0.022
C821
1/50
R877
+B 220
VOLTAGE
R878
2V
0V
0.1V
2.2V
0V
2.5V
0V
ZD801
2.5V
MTZJ5.6B
0V
0V
0V
4.1V
4.1V C887
5V
0.022
0V
2.7V
2.4V
0V
0V
0V
6 5 4 3 2 1
P12 1 - E
TO MAIN SECTION
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
7
+B
R860
C847
1K
+B
0.01
64 63 62 61 60 59 58 57
1
R858 C841
2
680 0.047
1 DEFI
3
PDO
2 TAI
C842
4
VVss
0.047
5 ISET
IC802
R857 27K
VVDD
6
LC78623D
FR
7
R856 1.2K
Vss
8 SERVO/SIGNAL CONTROL
9
EMFO
10
EMFIN
TEST2
11
15 HFL
12 CLV+
16 TES
13 CLV–
14 V/P–
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
+B
L801
0.82µH
+B
+B
3.5V
1 VO1-
+B
3.5V
2 VO1+
2.5V
3 VIN1
VIN1'
4
0V
5 NC
0V
6 NC
C846
0V
7 MUTE
330/10
29
GND
0V
8
VIN2'
2.5V
9
VIN2
2.5V
10
VO2+
+3.8V
Q804
11
8050D
7.4V 4.8V
VO2-
-3.2V
+B
12
GND
0V
5.5V 13
100
14 OP OUT
C889
10/16
L802
0.68µH
8 9
Figure 11 SCHEMATIC DIAGRAM (2/4)
+B
F
E
B
A
K
+B
R801
1K
C801
0.01
+B
56 55 54 53 52 51 50 49
48
47
XL801
48
EFLG XVSS
16.93MHz
46
47 SBSY
XIN
45
XOUT 44
+B
XVDD 43
MUTER 42
C868
+B
R874
RVDD
41 10/16
100
40
RCHO
39
RVSS
C867
38
LVSS
10/16
NC
34
37
LCHO
33 TEST4
R873
36 100
LVDD
C890
35
MUTEL
100/10
34
33
R880
100
C843 C873
100/10 0.01
0V
GND
28
3.5V
VO4– 27
3.5V
26
VO4+
2.5V
VIN4 25
VIN4' 24
2.5V
23
BIAS IN
+B
7.4V
VCC 22
30
+B
VCC 21
7.4V
VIN3' 20
2.7V
19
VIN3
3.8V
18
VO3+
3.2V
VO3– 17
OP IN +
16
OP IN -
15
+B
10
– 11 –
QT-CD111/111C
PD
VR
K
5 5 5
E
4 4 4
A
3 3 3
B
2 2 2
F
1 1 1
TR–
1 1 1
TR+
2 2 2
FO+
3 3 3
FO–
4 4 4
GND
5 5 5
PD
6 6 6
VR
7 7 7
LD
8 8 8
PICKUP UNIT
C870
0.0022
C869
0.0022
TR+
TR–
FO–
FO+
SP+
6 6 6
SP–
5 5 5
SL+
4 4 4
SL–
3 3 3
PU-IN
2 2 2
1 1 1
CD MOTOR PWB-B
11
LD
LD
1
MON
K
E
A
B
F
C
TR+
FO+
FO–
TR+
FO+
FO–
TR–
TR–
M701
M
SPINDLE
MOTOR
M M702
SLED
MOTOR
SW702
PICKUP IN
12