Sharp QT-90W

QT-90W
– 10 –
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
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
1
2
1
2
3
4
5
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
1
2
3
4
M
ERASE HEAD
RECORD/
PLAYBACK
HEAD
L-CH
R-CH
TAPE
MAIN PWB-A1
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-D
S201-A
S201-B
S201-F
S201-I
S201-G
S301-E
S201-H
S101-B
S301-F
S301-B
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
PLAY
1
5
1
3
+B
+B
+B +B
S101
BAND
SELECTOR
S201-C
10.7MHz
S201-E
S301
FUNCTION/
BEAT CANCEL
TP3
TP4
TP5
TP2
TP1
GND
R
P
1
2
1
2
3
R205
220K
BIAS
OSCILLATION
MIXING MIC
PRE AMP.
SWITCHING
X-BASS
CONTROL
X-BASS
CONTROL
BP101
BAND PASS
FILTER
C101
0.001
C102
0.001
L102
FM RF
C106
18P(CH)
C104
0.001
R122
10
C103
10/16
C143
8P(CH)
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(CH)
C111
33P(CH)
C112
5P(CH)
C113
1500P
CT102
10P
C114
0.0047(ML)
CT101
10P
C118
0.1
JK202
MIXING
MICROPHONE
C227
10/16
CN203
CN201A
CON201A
JK201
LINE INPUT
BUILT-IN
MICROPHONE
CN202
R248
10K
CON203
C237
47/16
Q207
SS8550
C223
1/50
C215
0.01
CON202
R242
27K
R244
27K
R243
2.2K
R245
2.2K
R212
18K
C212
0.0022(ML)
R211
18K
C211
0.0022
(ML)
T201
BIAS
OSCILLATION
C217
47P(CH)
R256
10K
R255
10K
CON201
CN201
C231
0.018
(ML)
C220
0.0068(ML)
C221
0.022(ML)
Q201
3DA8050
R228
10
C225
47/16
R227
22K
C207
4.7/50
C208
4.7/50
C206
0.022(ML)
C201
0.0015(ML)
R204
39
R208
6.8K
R201
3.9K
C213
47/16
C259
680P
R213
470K
C258
33P(CH)
C204
10/16
C202
0.0015(ML)
R202
3.9K
IC201
BA3313L
C209
0.0082
(ML)
R215
47K
C210
0.0082
(ML)
R216
47K
Q205
2SC945
C224
1/50
R226
4.7K
R235
680K
R221
330
R222
22K
R112
47
R111
47
C120
10/16
C119
0.02
T105
SW2 OSCILLATION
T104
SW1 OSCILLATION
T102
SW2 ANTENNA
T103
MW OSCILLATION
R124
33K
R110
100
C121
0.02
T101
SW1 ANTENNA
C139
0.02
L109
MW BAR ANTENNA
C138
220/16
R101
47
R102
33
T108
FM IF
D103
1N4148
C137
0.02
C107
15P
(CH)
C140
0.1
IC101
FM FRONT END
LA1186N
C108
20P
(CH)
C109
5P(CH)
L103
FM OSC.
R103
220K
R104
820K
C110
0.02
C141
5P(CH)
T106
FM DET.
R105
100
R121
3.9K
C142
100/16
CF101
10.7MHz
FM IF
C123
0.02
C124
22/16
CF102
AM IF
T107
MW IF
R233
22K
R217
150K
R218
150K
R214
330
C261
33P(CH)
C260
680P
C257
10/16
R203
39
R247
22K
R249
120
R362
10K
R601
560
Q601
3DA8050
C614
0.1
C612
100/16
ZD601
TZX8V2C
C203
10/16
R207
6.8K
R252
18K
D201
1N4148
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
0.1
R123
100
M601
TAPE
MOTOR
SW601
TAPE MAIN
CN602
D301
1N4148
R251
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
PECORD/
PLAYBACK
S101
BAND
SELECTOR
S301
FUNCTION/
BEAT CANCEL
VC2
TC2
TC1
VC1
TC4
VC4
TC3
VC3
MIC
Q209
2SC945
D302
1N4148
D303
1N4148
C318
47/16
C319
47/16
C320
47/16
R363
10K
R361
10K
C618
0.1
C130
0.02
C233
0.47/50
R234
4.7K
R240
1K
R257
47K
R258
47K
R246
22K
R253
120K
R209
1.5K
C205
0.022(ML)
C214
220/16
R206
220K
R254
120K
R210
1.5K
Q304
2SC945
Q303
2SC945
R320
6.8K
C343
1/50
R314
10K
R315
10K
R321
6.8K
C344
1/50
C613
100/16
D104
1N4148