Service manual

QT-CD131/131C
– 14 –
A
B
C
D
E
F
G
H
1
2
34 5
6
Figure 14 SCHEMATIC DIAGRAM (3/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 8.
R151
2.2K
SW201-B
R152
2.2K
SW201-A
C351
0.0022(ML)
C352
220/10
Q351
S8050D
R354
10
R353
47K
C353
0.022(ML)
R351
330
R352
150
L301
C354
0.0056(ML)
R455
15K
R456
15K
R458
1.2K
R457
1.2K
R123
3.3K
R121
2.7K
R124
3.3K
R104
12K
R105
15K
C108
820P
C107
820P
R101
330
R102
330
R103
12K
C105
0.0018
R106
15K
C106
0.0018
R109
120
C116
0.018(ML)
C113
47/16
IC101
BA3311L
10
9
8
5
2
R114
8.2K
R116
3.9K
R113
8.2K
R115
3.9K
R117
3.9K
C117
10/16
C115
0.018(ML)
R118
3.9K
R125
680K
C120
47/16
C119
2.2/50
R119
3.3K
R120
3.3K
D102
1N4148
D101
1N4148
C122
0.01
C121
0.01
R122
2.7K
R110
120
C114
47/16
C110
270P
R108
1K
R107
1K
C111
330P
C112
330P
C109
270P
C123
100/10
D103
1N4148
SW203-B
X-BASS
P
BACK UP
GND
TUNER +B
GND(A)
L-CH
R-CH
X-BASS
SW203-A
OFF ON
OFF
ON
TAPE
TUNER
ERASE HEAD
R-CH
L-CH
R
R
R
R
R
P
P
PP
P
R
P
R
R-CH
AUDIO GND
L-CH
CD +7.4V
DIGITAL GND
POWER GND
CD
OUT1
OUT2
IN1
IN2
NF2
NF1
GND
VCC
FILTER
ALC T
12
11
7
6
4
3
1
1 1
2 2
3 3
4 4
CNS101
1
2
3
4
1
2
RECORD/PLAYBACK
HEAD
TAPE
SW102-E
SW102-C
SW102-B
SW102-D
SW102-H
SW102-A
SW102-F
R218
22K
R217
22K
C152
0.039(ML)
C151
0.039(ML)
0
0
5
6
7
8
9
10
CNS502
SW201-G
TAPE
TUNER
CD
FM SIGNAL
CD SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
CNP101
C118
10/16
IC101:REC./P.B.EQUALIZER AMP.
BIAS OSC.
+B
P13 7 - H
TO CD SERVO
SECTION
P16 3 - A
TO TUNER
SECTION
P16 4 - A
TO TUNER
SECTION
CNP502
R
P
< >: Recording
[ ]: Play
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO.
VOLTAGE
IC101
<0V> [3.23V]
<0V> [0V]
<0.6V> [0.6V]
<0V> [0V]
<0V> [0V]
<0V> [0V]
<0V> [0V]
<7.43V> [7.43V]
<0V> [0V]
<7.37V> [7.37V]
<0.6V> [0.6V]
<3.3V> [3.3V]
9
8
7
6
5
4
3
2
1
13
12
11
10
PIN
NO.
VOLTAGE
IC202
0.1V
0V
11.2V
0V
11.3V
0V
0.1V
12V
10.4V
5.8V
0V
5.8V
10.4V