Read Sharp QT-120H (serv.man2) Service Manual online
QT-120H
– 7 –
Figure 7 SCHEMATIC DIAGRAM (2/2)
7
8
9
10
11
12
VOLUME
VR501-B
50K(B)
1
2
3
4
5
6
7
1
1
4
4
3
3
2
2
2
1
2
1
1
2
3
4
5
6
7
12
3
11
10
7
8
9
4
5
6
2
1
6 5 4 3 2 1
6 5 4 3 2 1
4
4
3
3
2
2
1
1
7
16
15
14
13
12
11
10
9
8
L
FM-MONO
(ML)
IZER
VR303
VR302
GRAPHIC
EQUALIZER
EQUALIZER
(ML)
L-CH SPEAKERS
R-CH SPEAKERS
TWEETER
FULL-RANGE
FULL-RANGE
TWEETER
POWER AMP.
VOLUME
POWER AMP. PWB-B
50Hz
AC 230V
POWER SUPPLY PWB-D
BATTERYS
DC12V["D"SIZE(UM/SUM-1,
R20 or HP2)battery x 8]
OUT1
OUT2
GND
BS1
IN1
NF1
FLT
IN2
NF2
BS2
VCC
STAND-BY
TAPE MAIN
MW TRACKING
fL
TC3
L104
fH
MW BAND
COVERAGE
FM BAND
COVERAGE
TC2
TC4
L107
L103
fH
fL
fH
fL
LW
TRACKING
TC102
TC103
LW BAND
COVERAGE
L108
L105
fH
fL
fH
fL
FM TRACKING
fH
TC1
fL
L102
TAPE
FM-ST
SW301 :
FUNCTION
SELECTOR
SELECTOR
BAND
VCO
MPX.
FM-MONO
FM-ST
TAPE
–
+
LW
MW
FM
1.63V
1.72V
1.65V
1.61V
0V
5V
5.01V
1.52V
1.73V
4.34V
0.9V
4.29V
2.3V
2.29V
0V
0V
1.6V
1.6V
1.6V
1.6V
5V
0.57V
0V
1.1V
1.05V
1.59V
0.43V
1.61V
1.65V
5.96V
0.58V
0V
0V
0V
2.33V
2.34V
5.95V
0.94V
0V
3.88V
1.43V
1.74V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
PIN
NO.
VOLTAGE
IC102
0.01V
6.17V
11.7V
6.2V
12V
6.49V
0.01V
0.61V
8
7
6
5
4
3
2
1
PIN
NO.
VOLTAGE
IC601
1.65V
0.5V
1.65V
5.96V
5.96V
1.65V
1.65V
FM
MW
12
11
10
9
11.7V
0V
6.25V
12V
R359
560
R353
2.7K
R329
1.2K
C353
1/50
R351 680K
C351 330P
Q303
9014 C
09
22
C313
0.0015
C307
560P
R333
2.7K
R331 8.2K
VR303-B 100K(B)
R327
8.2K
R325 8.2K
VR302-B 100K(B)
CNP703
R702 100
J601
HEADPHONES
HEADPHONES
C610
0.15
(ML)
0.15
C609
+B
+B
+B
CNP701
C702 0.022
C703
0.022
0.022
D704
1N5392
D701
1N5392
1N5392
C701
0.022
T701
POWER
TRANSFORMER
SO701
AC POWER
INLET
SOCKET
C704
0.022
0.022
D703 1N5392
F701
T1.25A
L 250V
D702 1N5392
R521
3.3K
IC601
TA8207K
C613 220/10
C606
47/10
47/10
C605
47/10
47/10
C604
0.001
(ML)
C603
0.001
(ML)
R607
100
R608
100
C607
100/10
C711
0.022
C706 0.022
CNS701
C709
0.022
C708
0.022
CNS703
VR501-A
50K(B)
C523
0.15
(ML)
(ML)
C524
0.15
(ML)
(ML)
R523
3.3K
R524
3.3K
C521
0.001
(ML)
C522
0.001
(ML)
R602
1K
R601
1K
1/50
C602
CNP601
CNS601
SP4
SP2
SP1
SP3
C601
1/50
C612 1000/10
C611
1000/10
C608
100/10
C710
2200/25
R603
100
100
R604
100
D706
MTZJ8.2C
C707
100/10
R701
680
Q701
ZQT8050 D
R355
10K
CNS301
CNP301
R356
10K
SW301-D
FUNCTION
SELECTOR
C712
100/25
C143
470P
L701
47
µ
H
R136
5.6K
R134
10K
33
0K
C154
1/50
53
50
R128
150K
C144
3.3/50
C142
3.3/50
C147
1/50
100
R126
SW101-C
C149
0.022
C148
220/10
D103
1N4148
D104
1N4148
SW301-C
VR302-A 100K(B)
VR303-A 100K(B)
310
022
022
R330
1.2K
CNP202
CNS202
SW401
M201
TAPE
MOTOR
M
C355 100/10
C354
1/50
R354
2.7K
R352 680K
C352 330P
Q304 9014 C
C314
0.0015
C308 560P
R334 2.7K
R332 8.2K
R328
8.2K
R326 8.2K
R131
10
C152
0.012
C151
0.012
(ML)
(ML)
VR101 10K(B)
C145 0.0015
R130 15K
460kHz
VOLTAGE
REGULATOR
12V
8.17V
7.51V
0V
0.63V
3.1V
0V
3.1V
0.63V
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