Sharp QT-80W User Manual Page 10
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QT-80W
– 10 –
• NOTES ON SCHEMATIC DIAGRAM can be found on page 14.
A
B
C
D
E
F
G
H
1
2
34 5
6
Figure 10 SCHEMATIC DIAGRAM (1/2)
FM
MW
SW1
SW2
FM
MW
SW1
SW2
FM
MW
SW1
SW2
11
2
2
1
2
3
4
5
1
2
3
5
1
2
3
4
1
2
3
R
P
R
P
R
P
R
P
R
P
1
2
3
4
1
2
3
4
R
P
LINE
FM(MONO)/BEAT
FM(ST)
TAPE(STAND-BY)
FM
MW
SW1
SW2
FM
MW
SW1
SW2
R
P
R
P
TAPE(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
LINE
FM(MONO)/BEAT
FM(ST)
TAPE(STAND-BY)
SW2
SW1
MW
FM
TAPE
(STAND-BY)
FM(ST)
FM(MONO)/
BEAT
LINE
3
2
1
TAPE(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
1
2
3
4
M
ERASE HEAD
RECORD/
PLAYBACK
HEAD
L-CH
R-CH
TAPE
ROD
ANTENNA
1
2
3
1
2
3
JACK
PWB-A2
1
2
3
4
5
67
8
9
2 3 4 5 6
7
8 9 10 11
12
1
24
13
14
15
16
17181920
21
22
23
1
2 3 4
5
6 7
8
9
10
11
12
AM
OSC
STB
AM RF
+VCC
FM DET
AM IN
DET
OUT
IF AD
MPX
IN
MO/ST
VCO
N.C.
AM/
FM
R-CH
L-CH
GNDGND
AM IF
AGC
AM MIX
FM IF
OUT1
ALC
NF1
N.C.
IN1
GND
GND
VCC
IN2
FILTER
NF2
OUT2
IC102
LA1805
S101-C
S101-F
S101-E
S101-A
S101-D
S201-E
S201-D
S201-B
S201-A
S201-I
S201-H
S301-E
S201-G
S101-B
S301-F
S301-B
S301-C
S301-D
1
2
3
L-CH
R-CH
FM BAND
COVERAGE
L103
TC1
fL
fH
FM
TRACKING
L102
TC2
fL
fH
MW BAND
COVERAGE
T103
TC4
fL
fH
MW
TRACKING
L100
TC3
fL
fH
SW1 BAND
COVERAGE
CT102
T104
fL
fH
SW1
TRACKING
T101
CT104
fL
fH
SW2 BAND
COVERAGE
T105
CT101
fL
fH
SW2
TRACKING
T102
CT103
fL
fH
+9V
PLAY
1
5
1
3
+B
+B
+B
+B
+B
+B
S101
BAND
SELECTOR
S201-C
88-108MHz
S201-F
S301
FUNCTION/
BEAT CANCEL
S301
FUNCTION/
BEAT CANCEL
TP3
TP4
TP5
TP2
TP1
GND
GND
R
P
MIXING MIC
PRE AMP.
SWITCHING
BIAS OSC.
BP101
BAND PASS
FILTER
C101
0.001
C102
0.001
L102
FM RF
C106
22P(CH)
C104
0.001
R122
10
C103
10/16
C141
10P
CT104
10P
CT103
10P
VD101
1S2638
R106
100K
C116
0.02
C117
0.02
R107
100K
R108
22K
R109
22K
VR101
100K(B)
FINE TUNING
C115
5P
C111
300P
C112
5P
C113
1500P
CT102
10P
C114
0.0047
CT101
10P
C118
0.22
JK201
MIXING
MICROPHONE
R240
1K
C227
10/16
R234
4.7K
CN202
CN203
CON203
JK301
LINE INPUT
BUILT-IN
MICROPHONE
CN301
R242
10K
CON202
C235
47/16
Q204
SS8550
C231
1/50
R233
1.8K
C230
0.01(ML)
CON301
R301
10K
R303
10K
R302
2.2K
R304
2.2K
R211
18K
C211
0.0022(ML)
R212
18K
C212
0.0022(ML)
T201
BIAS
OSCILLATION
C216
0.0027
C223
100P
R253
10K
R254
10K
CON201
CN201
C251
0.018
(ML)
C220
0.0068(ML)
C219
0.022
(ML)
Q201
3DA8050
R247
220
C218
47/16
R225
22K
R224
10
C207
0.47/50
C208
0.47/50
C206
0.022(ML)
R231
120K
C201
0.0015(ML)
R204
150
R208
5.6K
R201
3.9K
C213
47/16
C259
0.0027
R213
470K
C258
330P
C204
47/16
C202
0.0015(ML)
R202
3.9K
IC201
BA3313L
C209
0.001(ML)
R215
39K
C210
0.001
(ML)
R216
39K
R222
22K
R223
22K
Q207
2SC945
C233
1/50
R237
4.7K
R256
680K
R241
330
R243
22K
R112
47
R111
47
C120
10/16
C119
0.22
T105
SW2 OSCILLATION
T104
SW1 OSCILLATION
T102
SW2 ANTENNA
T103
MW OSCILLATION
R124
33K
R110
100
C121
0.22
T101
SW1 ANTENNA
C139
0.02
L109
MW BAR ANTENNA
C138
220/16
R101
47
R102
33
T108
FM IF
D103
1N4148
C137
0.22
C107
15P
(CH)
C143
0.1
IC101
FM FRONT END
LA1186N
C108
20P
(CH)
C109
5P
L103
FM OSC.
R103
220K
R104
820K
C110
0.02
C142
0.02
T106
FM
DETECTION
R105
100
R121
3.9K
C145
100/16
CF101
10.7MHz
FM IF
C123
0.02
C124
22/16
CF102
AM IF
T107
MW IF
R244
22K
R217
330K
R218
330K
R214
100
C261
330P
C260
0.0027
C214
220/16
C257
1/50
C215
0.022(ML)
R207
5.6K
R232
120K
R209
1K
R219
27K
R220
27K
R210
1K
R501
560
Q501
3DA8050
C518
0.1
C516
220/16
ZD501
TZX8V2 C
C203
47/16
R203
150
R251
18K
D201
1N4148-T72
C125
0.015(ML)
C126
0.015
(ML)
R114
2.2K
R116
2.2K
R113
10K
R115
10K
C127
1/50
C128
1/50
C129
1/50
R117
10
C135
0.0082(ML)
R120
2.7K
C133
3.3/50
C132
3.3/50
C136
0.0047
(ML)
C134
470P
C131
1500P
VR102
10K(B)
VCO
R119
15K
R118
100K
C122
0.02
R123
100
C303
0.047(ML)
CON302
C304
0.047(ML)
M601
TAPE
MOTOR
SW601
TAPE MAIN
CN504
R250
18K
IC102
FM IF DET./
MW/SW MIXER
LA1805
IC201
PLAYBACK/RECORD
PRE AMP. & CONTROL
BA3313L
S101
BAND
SELECTOR
S101
BAND
SELECTOR
S101
BAND
SELECTOR
S101
BAND
SELECTOR
S201
RECORD/PLAYBACK
S301
FUNCTION/
BEAT CANCEL
S201
RECORD/
PLAYBACK
S201
RECORD/
PLAYBACK
S101
BAND
SELECTOR
S301
FUNCTION/
BEAT CANCEL
S301
FUNCTION/
BEAT CANCEL
VC2
TC2
TC1
VC1
TC4
VC4
TC3
VC3
MIC
Q208
2SC945
C270
10/16
S201
RECORD/PLAYBACK
- SERVICE MANUAL 1
- Tape recorder 2
- NAMES OF PARTS 3
- Reference 4
- TAPE MECHANISM SECTION 5
- How to remove the motor 6
- (See Fig. 6-2.) 6
- How to reinstall the parts 6
- TUNER SECTION 7
- MW Section 8
- SW1 Section 8
- SW2 Section 8
- MAIN PWB 9
- MAIN PWB-A1 11
- 78 9101112 13
- NOTES ON SCHEMATIC DIAGRAM 14
- TYPES OF TRANSISTOR 14
- PARTS GUIDE 15
- DESCRIPTION 16
- PARTS CODE 16
- NO. PARTS CODE 16
- OTHER CIRCUITRY PARTS 17
- CABINET PARTS 17
- ACCESSORIES/PACKING PARTS 18
- BELT CONNECTION 19
- ALL RIGHTS RESERVED 20
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