Century USR1700 Schematic

TRANSFORMADOR

.

AC ~ 110/220V

D14

D13

D11

-+

D12

+

C11

3300uF/16V

C12
100nF

+5V

U11

7805

Q11

C14
100nF

KIA1273

R11

330R

+5V(TUNER/MOD)

1

2

3

C13

220uF/16V

+

USR1700-FONTE

PLACA SPX2000R-C

D18

D17

D22 D19

D15

-+

D16

-+

D20D21

+

C15

2200uF/35V

D23

1N4148

+

C20

1000uF/50V

C16

100nF

U12

7812

1

U13

LM317

1

R19

1K

D25

ZENER 27V

R13
47K

R18
47K

R12

10K

PSI

XC50

POWER(ON/OFF)

LNB(13/18V)

C19
100nF

R17

10K

V/H

Century Electro-Electronics

TÍTULO:

PRODUTO: COD.: REV.:

PLACA: COD.: REV.:

DESENHADO POR:

DOC.: REV.:

C:\RECEPTORES\USR1700\10-02-011\ESQUEMAS\USR1700-00.DSN

Circuito da Fonte do Receptor USR1700

USR1700

Luiz Eduardo

130

DATA:

10.02.011

SPX-2000RUSR1700

15/11/00
00

APROV.:

PAG.:

00

C

1/5

Q12

C3198

3

2

3

2

C23
100nF

+

R14
240R

+

100uF/35V

+12V

C17

100uF/16V

C22

R15

2K4

R16

VT 28V

D24

1N4007

1K

Q13

C3198

REV. DESCRIÇÃO APROV. DATA

USR1700-MICRO

OSC

R310

5K6

C303

10nF

N/W

SKEW
SAT\TV

C/Ku
RE-EN
SDATA

SCLOCK
AUD-EN
VOL-EN
MUTE

R321
5K6

R322

1K

R311

5K6

C304

10uF/16V

R319

5K6

+

C305
10nF

R312

5K6

R301

5K6

R320
47R

Q301

C3198

R302

5K6

R303

5K6

KIA1266

Q302

R304

5K6

+5V

R305

5K6

R325
470R

R324

10K

R306

5K6

IF/BW

+5V

R307

5K6

R323

4K7

RX301

PLACA SPX2000R-C

DISP101

2

10.02.011

SPX2000RUSR1700

15/11/00

00

8

DIG3

+5V

+

3

Q305
KIA1266

1

C301

220uF/10V

DIG4

6

2

APROV.:

PAG.:

3

1

C

Q306
KIA1266

C308
100nF

00

2/5

+5V

SW103

POWER

SW102

CH UP

SW101

CH DOWN

U301

40
31
19

18

9

20

12
13
14
15

1
2
3
4
5
6
7
8

R327

47R

R326
47R

+

321

47uF/16V

321

IRS

80C51

VCC
EA/VP
X1

X2

RESET
GND

INT0
INT1
T0
T1

P1.0/T2
P1.1/T2X
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7

C306

U302

1

1

2

2

24C04

3

3

4 5

45

+5V

39

P0.0

38

P0.1

37

P0.2

36

P0.3

35

P0.4

34

P0.5

33

P0.6

32

P0.7

21

P2.0

R331 560R

22

P2.1

R330 560R R335 4K7

23

P2.2

R329 560R

24

P2.3

R328 560R

25

P2.4

26

P2.5

27

P2.6

28

P2.7

17

RD

16

WR

29

PSEN

30

ALE/P

11

TXD

10

RXD

50u/J17

7

7

8

8

6

6

R318220R
R316220R

R360

1K

R361

1K

R362

1K

R349 100R
R348 100R
R347 100R
R346 100R
R345 100R
R344 100R
R343 100R
R350 100R

5K6

5K6

5K6

R313

R309

R308

+5V

+5V

R31710K
R31510K

C302
100nF

R339 4K7
R338 4K7
R337 4K7

11

A

7

B

4

C

2

D

1

E

10

F

+5V

4K7

5

G

3

.

DIG.1

DIG2

12

9

+5V

3

Q303

2

KIA1266

1

3

Q304

2

KIA1266

1

5K6

R314

D301

LED

R336

R334 4K7
R333 4K7

POWER

V/H

MONO/ST

Century Electro-Electronics

TÍTULO:

PRODUTO: COD.: REV.:

PLACA: COD.: REV.:

DESENHADO POR:

DOC.: REV.:

C:\RECEPTORES\USR1700\10-02-011\ESQUEMAS\USR1700-00.DSN

Circuito do Microcontrolador do USR1700

USR1700

Luiz Eduardo

130

DATA: