Service manual
QT-CD161/141
– 14 –
• The numbers 1 to 12 are waveform numbers shown in page 10.
Figure 14 SCHEMATIC DIAGRAM (1/6)
A
B
C
D
E
F
G
H
1
2
34 5
6
R813
33K
R830
1K
C804
0.001
R804
2.2K
R808
12K
C806
0.033
C845
4.7/50
R871
4.7K
R842
22
C848
1/50
C808
0.068
R805
6.8K
C805
0.033
R802
100K
R8
5
68
0
C850
0.1
R816
1.5K
C814
0.01
C820
0.0033
R827
220K
R823
1.2K
C811
0.1
C812
330P
C817
0.47/50
R824
10K
C810
180P
R803
15K
C834
0.033
R832
56K
C831
0.0027
R838
33K
R810
82K
D802
1N4148
R849
100K
C851
0.022
C821
1/50
R828
1K
C807
0.1/50
C839 0.1
C846
C887
0.022
R839
22K
R840
22K
C813
0.1
R812
15K
R829
1K
R814
10K
R815
47K
R837
47K
C832
27P
R834
1K
C822
220P
C809
0.047
R811
3.3K
R822
6.8K
IC801
LA9241M
SERVO AMP.
48
47
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
34
33
16
15
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
1
C837 10/16
C838 0.01
C835 0.1/50
C840 0.33/50
R820
10K
R819
39K
R817
82K
C815
0.0047
C819
47/16
R825
1.2K
R826
220K
R835
470
C830
2.0P
C833
0.001
R836
47K
R809
27K
R807
1K
R806
100
C803
0.1/50
R833
5.6K
R821
56K
C816
0.001
R8
1.
2
R831
1K
Q801
KTA1266 GR
LASER
DRIVE
C849
0.022
RES
CQCK
CO IN
RWC
SL+
SL–
DRF
SQOUT
WRQ
PU IN
D-GND
R-CH
POWER GND
VCC1
NC
TBC
FSC
GND
SLI
SLC
RFS–
RFSM
CV+
CV–
SLOF
HFL
TES
TOFF
TGL
JP+
JP–
A GND
FE–
FE
FA–
FA
TO
JP
TE
TE–
TESI
TH
SCI
TA
TD–
TD
TB
F
E
FIN1
FIN2
FD–
FD
SPD
SP–
SPG
SP
NC
SL+
SL–
SLD
SLEQ
VREF
GND
+B 7.4V
L-CH
AUDIO GND
64
63 62
61
60
59
58
57
56
55
54 53
52
51
50
49
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
2
3
4
5
6
7
8
9
10
11
1
15
13
14
16
45
+
B
+B
C818
1/50
LDS
LDD
BH1
PH1
LF2
VR
REFI
VCC2
FSS
DRF
CE
DAT
CL
CLK
DEF
MAIN PWB-A1(1/4)
CD SIGNAL
P19 8-H
P16 1-F
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO.
VOLTAGE
IC802
0V
0V
1.5V
0V
2V
5V
0.3V
0V
2.5V
2.5V
0V
0V
0V
5V
0V
4.8V
5V
5V
0V
0V
2.5V
0V
41
40
39
38
37
36
35
34
33
44
43
42
15
14
13
47
46
45
18
17
16
50
49
48
21
20
19
53
52
51
23
22
55
54
26
25
24
58
57
56
29
28
27
61
60
59
32
31
30
64
63
62
PIN
NO.
VOLTAGE
PIN
NO.
VOLTAGE
2V
0V
0.1V
2.2V
0V
2.5V
0V
2.5V
0V
0V
0V
4.1V
4.1V
5V
0V
2.7V
2.4V
0V
0V
0V
5V
0V
0V
0V
0V
0V
0V
5V
2.5V
0V
0V
0V
5V
4.7V
2V
0V
0V
2V
4.7V
0V
5V
2.3V