Century USR1700-012-00 Schematic
ESQUEMA ELÉTRICO DO RECEPTOR USR 1700 CENT.
TOMADA DE FORÇA
AC ~ 110/220V
.
TRAFO +10V / +18V
+5V
C112
100nF
U111
7805
Q111
1
3
2
KIA1273
R111
330R
CN110
T1
FIO AMARELO +10VAC
}
D113
D112
D111
-+
D114
+
3300uF/16V
C111
}
FIO PRETO +18VAC
+
+
47uF/63V
D122
1N4007
D116
D117
C125
C126
D115
-+
D118
+
2200uF/35V
47uF/63V
D121
1N4007
+
1000uF/50V
C15
C120
C16
100nF
R124
ZENER 27V
U112
7812
Q112
1
1K
D125
2
D124
1N4007
3
C118
100nF
R126
4R7 5W
C122
100nF
+12V
LNB(18V)
VT 28V
BC547
+5V(TUNER)
Q113
BC557
+
470uF/16V
R113
47K
PULSO
+5V(MODULADOR)
R115
1K
C113
R112
10K
POWER(ON/OFF)
C306
100nF
PSAT/TV
R120
10K
R121
47K
R122
470R
+12V
R118
1K
+5V
470uF/16V
Q115
BC547
R117
100R
R125
4R7
C127
R123
100R
1
1
Q114
BC547
+
2
2
RELE
CN101
BARRA TRIPOLAR
.
.
P
+5V
110/220V
}
.
GND
Century Electro-Electronics
TÍTULO:
PRODUTO: COD.: REV.:
PLACA: COD.: REV.:
DESENHADO POR:
DOC.: REV.:
C:\RECEPTORES\USR1700\10-02-015\ESQUEMA\USR1700-012-00.DSN
Circuito da Fonte do Receptor USR1700
USR1700
Luiz Eduardo
130
DATA:
10.02.015
26.10.012USRFX
05/12/00
00
APROV.:
PAG.:
00
1997
1/4
ESQUEMA ELÉTRICO DO RECEPTOR USR 1700 CENT.
REV. DESCRIÇÃO APROV. DATA
+5V
OSC
C301
100nF
SKEW
PSAT\TV
RE-EN
SDATA
SCLOCK
AUD-EN
VOL-EN
MUTE
C303
100nF
R322
5K6
R321
1K
+5V
R311
5K6
10uF/16V
R319
C304
+
5K6
R312
C305
10nF
5K6
R320
47R
Q301
BC547
R302
5K6
R303
5K6
Q302
BC557
R304
5K6
+5V
R305
5K6
R325
470R
R324
10K
R306
5K6
IF/BW
R307
5K6
R323
4K7
321
IRS
IRS 301
R327
22K
321
40
VCC
31
EA/VP
19
X1
18
X2
9
RESET
20
GND
12
INT0
13
INT1
14
T0
15
T1
1
P1.0/T2
2
P1.1/T2X
3
P1.2
4
P1.3
5
P1.4
6
P1.5
7
P1.6
8
P1.7
R326
47R
C307
+
10uF/25V
1
2
3
4 5
U301
80C51
PSEN
ALE/P
+5V
U302
24C04
7
7
8
8
6
6
1
2
3
45
CH DOWN
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
RD
WR
TXD
RXD
+5V
R360
R361
R362
R314
5K6
1K
1K
1K
D301
LED
+5V
R31710K
R31510K
TÍTULO:
SW103
POWER
SW102
CH UP
SW101
R349 100R
39
R348 100R
38
R347 100R
37
R346 100R
36
R345 100R
35
R344 100R
34
R343 100R
33
R350 100R
32
21
R331 560R
22
R330 560R R335 4K7
23
R329 560R
24
R328 560R
25
26
27
28
17
16
29
30
11
10
R318220R
R316220R
PRODUTO: COD.: REV.:
C302
100nF
PLACA: COD.: REV.:
DESENHADO POR:
DOC.: REV.:
+5V
R339 4K7
R338 4K7
R337 4K7
+5V
R336
R334 4K7
R333 4K7
POWER
4K7
11
A
7
B
4
C
2
D
1
E
10
F
5
G
3
.
DIG.1
12
+5V
3
Q303
2
BC557
1
2
DIG2
9
3
Q304
BC557
1
DISP101
2
8
DIG3
3
Q305
BC557
1
6
Century Electro-Electronics
Circuito do Microcontrolador do USR1700
DATA:
10.02.015
26.10.012USRFX
05/12/00
00
APROV.:
PAG.:
USR1700
Luiz Eduardo
130
C:\RECEPTORES\USR1700\10-02-015\ESQUEMA\USR1700-012-00.DSN
DIG4
2
3
1
1997
Q306
BC557
00
2/4
+5V
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