Service manual
QT-CD161/141
– 15 –
Figure 15 SCHEMATIC DIAGRAM (2/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
78 9101112
R876
10K
R873
100
C890
100/10
C867
10/16
R874
100
C868
10/16
R875
10K
C870
0.0022
C869
0.0022
R858
680
XL801
16.93MHz
R880
100
C843
100/10
C873
0.01
L801
0.82µH
L802
0.68µH
Q802
KTA1273 Y
C846
330/10
C844
330/10
C888
0.022
R860
1K
IC802
LA78623D
SERVO/SIGNAL
CONTROL
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
C847
0.01
C842
0.047
R857
27K
R856
1.2K
C841
0.047
C802
47/16
R801
1K
C801
0.01
1
2
3
15
16
30
IC803
LA6541
FO+
FO–
TR–
TR+
TR+
TR–
FO–
FO+
K
A
B
E
F
TEST1
CS
TEST5
4.2M
16M
TST11
RES
CQCK
COIN
RWC
SQOUT
WRQ
FSX
SBCK
EFLG
SFSY
SBSY
PW
XVSS
XIN
XOUT
XVDD
MUTER
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
NC
MUTEL
TEST4
TEST3
DOUT
C2F
EMPH
CONT5
CONT4
CONT3
CONT2
CONT1
VDD
FSEQ
PCK
JP-
JP+
TGL
TOFF
TES
HFL
V/P
CLV–
CLV+
TEST2
EMFIN
EMFO
Vss
FR
VVDD
ISET
VVss
PDO
TAI
DEFI
GND
VO4–
VO4+
VIN4
VIN4G
BIAS IN
VCC
VG3
VIN3
VO3+
VO3–
GND
VO2–
RESET
REG OUT
REG-B
GND
VIN2
VG2
VO2+
MUTE
VO1–
VIN1
VO1+
GND
GND
GND
VCC
VG1
CD
TUNER GND
6
4
6
3
6
2
1
6
6
0
5 9
5
8
5
7
6
5
5
5
5
4
5
3 5
2
5
1
0
5
4
9
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
+B +B
PU-IN
SL–
SL+
SP–
SP+
1
BI802
2
3
4
5
1
BI801
2
3
4
5
6
7
8
6
5
4
3
2
1
BI803
6
5
4
3
2
1
CNS803
1
CNS802
2
3
4
5
1
CNS801
2
3
4
5
6
7
8
6
5
4
3
2
1
CNP803
CD MOTOR PWB-B
M
M702
SLED
MOTOR
M
M701
SPINDLE
MOTOR
SW702
PICKUP IN
PD
VR
LD
E
K
C
B
A
F
M0N
LD
FO–
FO+
TR+
TR–
TR–
F
B
A
E
K
1
2
3
4
5
1
2
3
4
5
6
7
8
LD
PD
GND
FO–
FO+
TR+
TR–
VR
PICKUP UNIT
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO.
VOLTAGE
IC801
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
0V
15
14
13
47
46
45
41
40
39
38
37
36
35
34
33
44
43
42
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
0V
2.5V
2.5V
0V
0V
2.4V
4.1V
4.7V
0V
0V
5V
5V
2.5V
2.5V
0.9V
0.9V
2.1V
4.2V
0V
5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.2V
2.2V
0V
0V
5V
5V
4.8V
0V
5V
0V
0V
1.5V
2.4V
2.5V
2.5V
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO.
VOLTAGE
IC803
7.2V
0V
2.8V
0V
3.6V
0V
GND
GND
GND
3.2V
3.2V
0V
2.6V
5.1V
6.6V
15
14
13
18
17
16
21
20
19
23
22
26
25
24
29
28
27
30
PIN
NO.
VOLTAGE
GND
GND
3.2V
3.2V
0V
2.6V
0.4V
7.2V
0V
0V
2.5V
2.6V
3.5V
2.9V
GND