Tape Mechanism - Sharp CD-CH1500 Service Manual

CD-CH1500
1 2 3 4 5 6 7 8
A
B
C
D
E
BA3126N
SELECTOR
F
POWER PWB-D1 (2/2)
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.
1
P23 9 - H
FROM MAIN PWB
CNS940
CNP102
+B
2
R154
47K
1
0V
3
Q119
DTC363 TS
REC MUTE
3
R109
1
Q120
15K
DTC363 TS 0V
2
REC MUTE
R-CH
IC101
AN7345K
PLAYBACK AND
RECORD/PLAYBACK
AMP.
L-CH
+B
R105
100
9 8 6
7
IC102
HAED
1 2 3 4 5
PLAYBACK SIGNAL
RECORD SIGNAL
2
Figure 30 SCHEMATIC DIAGRAM (11/11)
P28 1 - F
TO POWER SECTION
A B C D
+B
SWITCHING
R153 R147
47K 4.7K
+B
0V
R144
Q114
220
2SA1015 GR
C132
6.8V
220/16
GND
13 Vcc
C131
4V
14 RIPPLE ALC
22/50
R136 Nor/CrO2
0V
15
ALC
10K
C130 R138
3.3V
1/50 10K
16
C138
0.0033
C124
C126
22/50
0.022
R134 0.5V
17
100
R132
1.5K C122
0V
270P
18
R130
R150
1K
6.8K
R128
68K 0V
19
R124
R126
5.6K
20
15K
C120
1/50
1.9V
21
C112
R120
560P
3.9K
R116
R118
56
100K
0.5V
22
C108
C106
C110
330P
0.033 0V
47/25
23
0V
R114
24
1K
R104
5.6K
C104
560P
0V
3
1
Q101
KRA107 M
10V
2
R102
R101
2.2K
1K
C103
R103
10/16
2.2K
C102
180P
1 2 3 4 5 6 7
1 2 3 4 5 6 7
1 2 3 4 5 6
1 2 3 4 5 6
ERASE
HEAD

TAPE MECHANISM

ASSEMBLY(2/2)
3 4
– 30 –
BIAS OSC.
Q116
3
KTC3203 Y
0V
Q115
0V 0V
KRC104 M
1
R148
2
4.7
0V
R143
82
+B
R141 R139 C135
SWITCHING
47K 22K 0.047(ML)
0V
12
0V
11
R137
10
C129
10K
1/50
3.3V
9
C127
C125 0.0033
R135
22/50
100
0.5V
R133
8
1.5K
C121
270P
0V
7
R129
C116 R131
3.3/50 6.8K 1K
0V
6
C118
0.022 R125
R127
5.6K
5 15K
C119
1/50
1.9V
4
R121 C113
3.9K
560P
R117
R119
56
100K
0.5V
3
C109
C107
C111
0V 330P
0.033
47/25
2
R115
0V
1
1K
C105
560P
C101
180P
CNP101
CNS101A
CNS101B
RECORD/
PLAYBACK
HEAD
R-CH L-CH
5
C134
47/25
L104
330µH
C133
0.039(ML)
C137
0.0082
R149
15K
6