Sharp QT-CD131H Service Manual page 14

QT-CD131H/132H
A
B
TAPE
SW102-C
RECORD/PLAYBACK
C
HEAD
R
L-CH
1 1
2 2
R-CH
3 3
4 4
ERASE HEAD
R
SW102-E
R
P
SW102-H
D
R-CH 1
E
GND(A)
2
L-CH 3
+B
TUNER +B 4
GND 1
2
BACK UP
CNP502
CNS502
P16 4 - A
TO TUNER
SECTION
R456
6.8K
R-CH
5
AUDIO GND 6
R455
7
L-CH
6.8K
8
CD +7.4V
9
DIGITAL GND
10
POWER GND
MUTE
11
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 21.
1
C105
R104
R103
0.0018
22K
22K
IC101:REC./P.B.EQUALIZER AMP.
R105
15K
R109
R102 R101
120
330 330
SW102-B
C109
270P
NF1
P R P
5
IN1
C107 R107
C111
820P 1K
330P
IN2
9
NF2
C112
C110
C108
330P
270P
820P
P R P
R108
1K
SW102-D
R110
C106
120
0.0018
R106
15K
BIAS OSC.
C351
0.0022(ML)
R458 R457
1K 1K
FM SIGNAL
CD SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
2
Figure 14 SCHEMATIC DIAGRAM (3/6)
C115
0.018(ML)
R115
R113 R117
8.2K 3.9K 3.9K
C113
47/16
C117
10/16
3 1
OUT1 8
C119
VCC
2.2/50
IC101
10
FILTER
BA3311L
ALC T
2
GND OUT2
4
11 6 7 12
C118
10/16
C114
R116
47/16
3.9K
R114 R118 R120
C116
3.9K 3.3K
8.2K
0.018(ML)
SW201-G
P R
R351
220
L301
R352
R353
150
47K
Q351
S8050D
C352 C353
R354
220/10 0.022(ML)
10
PIN
NO.
<0V> [3.23V]
1
2 <0V> [0V]
3 <0.6V> [0.6V]
4 <0V> [0V]
<0V> [0V]
5
6 <0V> [0V]
7 <0V> [0V]
8 <7.43V> [7.43V]
9 <0V> [0V]
10 <7.37V> [7.37V]
11 <0.6V> [0.6V]
12 <3.3V> [3.3V]
< >: Recording
[ ]: Play
3 4
– 14 –
TAPE R151
SW201-A
5.6K
TUNER
CD
R121
R155
1K
27K
R157
SW102-A
131H:47K
132H:56K
R P
D103
R159
1N4148
27K
ON OFF
SW203-B
C123
X-BASS
100/10
X-BASS
SW203-A
ON OFF
R160
R125
27K
680K
R158
SW102-F 131H:47K
132H:56K
P
R
C122
R156
0.01 R122
SW201-B
27K
1K
TAPE
TUNER
R124 CD
R152
8.2K
5.6K
J6
82
IC101 IC202
PIN
VOLTAGE NO. VOLTAGE
0.1V
1
2 0V
3 11.2V
4 0V
11.3V
5
6 0V
7 0.1V
8 12V
9 10.4V
10 5.8V
11 0V
12 5.8V
13 10.4V
5
R167
4.7K
R153
6.8K
R165
C151
680K
0.027
(ML)
R161
27K
C157
0.01
(ML)
C153
C155
0.027(ML)
330P
C154
C156
0.027(ML)
330P
R162
27K
C158
0.01
R166
(ML)
680K
C152
0.027
(ML) C160
131H:0.22/50
132H:1/50
R168
4.7K
R154
6.8K
R150
220
6