Schematic Diagram - Sharp XL-70 Service Manual

XL-70/70C
AM TRACKING fL
AM ANT
A
C329
D301
0.022
1N4148
+B
AM BAND COVERAGE fL
D302
1N4148
AM LOOP
ANTENNA
1 1
2
2
C301
0.001
B
C349
0.001
C376
0.001
SO301
FM
ANTENNA
SOCKET
75 OHMS
C
C303
0.001
C319
18P
(CH)
1 2 3 1 2 3
BF301
D
BAND PASS
FILTER
RECORD/PLAYBACK
E
HEAD
L-CH
1 1
2 2
3 3
R-CH
4 4
5 5
6 6
7 7
8 8
ERASE HEAD
F
G
MAIN PWB-A1
M901
TAPE
MOTOR
1
M
- 2
SOL901
SOLENOID
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1
C330
12P(CH)
C332
C331
0.022
VD301
0.047
T302
SVC348S
R323
68K
C335
560P
C334
27P(UJ)
T306
AM OSC.
R310
4.7K
R315
33
Q305
2SC535 C
0V
0.8V
R305
R304
680
47K
R301
FM OSC
22
FM BAND
COVERAGE fL
FMIF
T304
C312
CF303
33P
FM RF
10.7MHz
1 3
R307
C311 47
10P(CH)
C318
2
5P
4 5 6 7 8 9
IC301
FM FRONT END
TA7358AP
R101
1K
1 0V
C101
2 0V
0.001
3
0V
R140
10K
0.3V
4
C121
(8.3V)
82P
5
0V
8V
6
(10V)
7
0V
8
0V
9
0V
R102
1K
C122
82P
1 1
0V
11.7V
2 3
(0V)
2
(11.7V)
3
Q171
Q172
KRA102 M
KRC102 M
SWITCHING
PH901
TAPE
PHOTE
MECHANISM PWB-D/E
7
INTERRUPTER
1
6
5
2
4
3
SW901
2
FOOL
1
PROOF
SW902
CAM
2
Figure 24 SCHEMATIC DIAGRAM (1/6)
FM MUTE LEVEL
C343
R358
33P
VR351 8.2K
10K(B)
L353
1mH
+B
C360
0.022
24 23
R336
10K
FM AFC
IC303 FM IF DET./FM MPX./AM IF
2 3
1
3
1
2
CF302
FM IF
+B
R382
330
+B
R386
0.1V
330
TP301
VT
1V
FM IF
AMP.
C381
R312
22 21 20
12P(CH)
2.2K
R316
330
X352
4.5MHz
C382 1
R309
15P(CH)
470
C384
0.001
+B
+B
R115
15K
SWITCHING
Q101 Q103
R117
KTC3199 GR
KTC3199 GR
22K
1.5V
(0V)
C113
4.7/25
C115
0.3V 0.3V
(0.8V) (0.8V) 0.0022
R123
R121
R119
4.7K
4.7K
100
SWITCHING
Q102 Q104
R126 R118
KTC3199 GR KTC3199 GR
5.6K 22K
1.5V
(0V)
0.3V
0.3V
(0.8V)
(0.8V) C116
R124
R122
0.0022
R120
4.7K
4.7K
100
R125
C117
100K
10/16
R116
15K
SWITCHING
Q152
7.8V
(0V) KTA1266 GR
8.3V
R151 R152
47K 100K
R154
C153
10K
0.0039
2.6V
(0V)
Q151
R153 R155
2SC2001 K
10K 56
REC. BIAS
3
L151
C154
2
330µH
0.027
Q153
1
(ML)
KRC104 M
R904
270
Q903
KRC107 M
C902
R903
7 7
47K 3.3/50
2
3
6 6
3.2V
0.7V
SWITCHING
5 5
1 0V
Q902
4 4
2SB562 C
+B R909
3 3
18K
2 2
R902
1 1 11.8V
56K
R910
33K SOLENOID DRIVER
C901
0.001
3 4
– 24 –
22 21 20 19 18 17
2.3V
AM LO FM/AM OUT
AM RF VSM
IN CUT
LA1832S
AM IF IN
4 6
2.1V 2.1V 5 7 8 9
R352
1K
C350
0.022
1 3
2
T351
AM IF
AM IF
R393
1K
R377
5.6K
L351
R380
100µH
1.5K
C385
C393
0.01
1/50
19 18 17 16 15 14 13 12
IC302 PLL(TUNER)
LC72131
2 3 4 5 6 7 8 9 10
R359
1.8K
R360
4.7K
R105
150K
R103
R107
120
10K
C129
4.7/25
R109
C109
3.9K
0.015
C107
(ML)
47/16
C105
3 4
270P
C130
0.6V
4.7/25
NC
5
0V
IC102
BA3311L
REC./P.B.
EQUALIZER
9 0V
AMP.
0.6V
0V 0V
11 6
C106
270P
C112
C108
10/16
47/16
C110
0.015
R104
(ML)
120
R108
10K
R106
150K
R157
150
R156
150
R905
TAPE MOTOR
10K
DRIVER
SWITCHING
M 12V
Q905
C905
2SB562 C
0.022
11.7V
+B
11.9V
2
C903
100/25
1
11.8V
R901
1.5K
R906
D904
1.5K
1N4148
5
SWITCHING
1
4.7V
(0V) 3
C371 2
R361
1/50
12K
R362
12K
C372
1/50
16 15 14 13
R366
2.2K
C358
10 11 12
1/50
C357
2.2/50
+B
L352
100µH
C396
100/10
R391
C395
390
0.022
R392
390
Q360
FM RIPPLE
KTA1266 GR
FILTER
10.8V
11.7V
R383
5.6K
10.9V
R385
R384
5.6K
6.8K
C391
47/16
11
D522
1N4148
REC L
REC R
R111 TAPE R
2.2K
TAPE L
Q105
KTC3199 GR
0.7V R113
C111
3.3K
10/16
R131
4.7K
REC MUTE
C126
R134
1
22/16
100K
4.6V
R133
8
10.2V
1K
R141
330
10
10.1V
C125
C123
100/25
2.2/50
2
0V
4.6V
7 12
R112
2.2K
REC MUTE
0.7V
R110
3.9K
Q106 R132
KTC3199 GR 4.7K
D104
1N4148
4.9V
+B +B
SWITCHING
Q906
2
C904
KRA102 M
0.022
4.9V
1
0V
3 2
3
0.6V
3
1
D903
1N4148
SWITCHING
TAPE_SW
1 2 3 4
CNP703
CNS703
P27 12-D
TO DISPLAY PWB
6
+
5 6