Schematic Diagram / Wiring Side Of P.w.board - Sharp QT-CD161 Service Manual

QT-CD161/141
MAIN PWB-A1(1/4)
CD SIGNAL
A
B
C803
0.1/50
R802
100K
C804
C
0.001
C805
R804
2.2K 0.033
R805 C806
C807
6.8K 0.033
0.1/50
R806
100
R807 C809
1K
0.047
R809
R808
27K
12K
R811
D
3.3K
R839
GND 22K
E
R840
22K
C811
0.1
IC802
PIN PIN PIN
NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE
1 0V 23 5V 45
F
0V
2 24 0V 46
3 1.5V 25 0V 47
0V
4 26 0V 48
5 2V 27 0V 49
5V 28
6 0V 50
7 0.3V 29 0V 51
8 0V 30 5V 52
9 2.5V 31 2.5V 53
54
10 2.5V 32 0V
11 0V 33 0V 55
34
12 0V 0V 56
13 0V 35 5V 57
36
14 5V 4.7V 58
15 0V 37 2V 59
38
16 4.8V 0V 60
G
17 5V 39 0V 61
40
18 5V 2V 62
0V 41 4.7V 63
19
42
20 0V 0V 64
2.5V 43 5V
21
22 44
0V 2.3V
H
• The numbers 1 to
1
LASER
DRIVE
Q801
KTA1266 GR
R842
C849
22
0.022
C848
1/50
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
2
E
3
4 F
TB
5
FIN2
1
2 FIN1
TE–
6
R803
7
TE
15K
TESI
8
9 SCI LA9241M
C808
0.068
SERVO AMP.
TH
10
TA
11
TD– 15 TO
12
16
C810 FD
180P
TD
13
14
JP
15
16
18 19 20 21 22 23
17
R813 C812
330P
33K
R817
82K
R828
1K
R829
1K
R815
R816
C814
47K
1.5K
0.01
VREF
2
PU IN
2V
3
WRQ
0V
4
SQOUT
0.1V
2.2V 5
DRF
0V
SL– 6
2.5V
7
SL+
0V
8
RWC
2.5V
CO IN
9
0V
CQCK 10
0V
RES 11
0V
4.1V
4.1V
5V
0V
2.7V
2.4V
0V
0V
0V
D-GND 1
+B 7.4V
45
POWER GND
P16 1-F
13
L-CH
14
AUDIO GND
15
16
R-CH
12 are waveform numbers shown in page 10.
2 3
Figure 14 SCHEMATIC DIAGRAM (1/6)
R871
4.7K
48
47
FSC
46
GND
45
SLI
44
48 NC
47 TBC
SLC
IC801 43
RFS–
42
C830
2.0P
RFSM 41
CV+
40
CV–
39
34 TGL SLOF
38
33 JP+
HFL 37
36
TES
TOFF 35
34
33
24 25 26 27 28 29 30 31 32
C816
0.001
R827
220K
R822
6.8K
+B
4
– 14 –
C850
0.1
C845
4.7/50
R838
C834
33K
0.033
R836
C833
R837
47K
0.001
47K
R834
R833 C832
1K
5.6K 27P
C831
0.0027
R835
R832
56K 470
C822
220P
D802
1N4148
R810
82K
C851
0.022
C821
1/50
5
R85
680
R8
1.2
+B
6