LG CF-21K49 Schematic

P/No : 3854VA0057A-S(1/2)
Date : 1999.6.28

Video
Audio
Y
C

BLOCK DIAGRAM

Video

SECAM TA 1275Z

13 153 5

R-Y B-Y C Y-in

1

Y-out

VCD 1 Chip TB1238BN

L

9

10

12

16

B+

9V REG

ST 5V

AUDIO B+

Power Input

110 - 240Vac

30V

12V

14V

MICOM

11

IF

AGC

1

6

IF - in

Pre-AMP

7

4.5M Others

SAW
Filter

8

AGC

6

3

26V

Head
phone

Speaker

8

RGB-out

RGB

2

187V

Ver. AMP.

LA7833

24

24

V-DY

RGB

in

RGB

9

CVBS

1

Col.

H-DY

32

H-out

H.D.TR

OSD
RGB

E2PROM

Pre-

AMP

Local

KEY

RGB (Scart only)

AV

(Scart or Phone)

35

SIF

Trap

38

Y-in Video

out

5.5

6.0

6.5

4.5

53

SIF

in

Audio-out

CPT

I

2

C LINE

RF

TUNER

2

LNA on off

(from Micom)

RGB

CPT Board

SMPS
Trans.

R

5

S0 / S1

Audio SW
CD4052B

3739

TELETEXT(Euro)
SAA5281Z

112V (14Ó/20Ó)
115V (21Ó)

V-out

B+

FBT

Video

in

Monitor

Out

RGB SW

TEA 5114A

EXT
RGB

(from SCART)

MICOM

3

47

Sound Amp.

TDA7253

SIF

Filter

43

5.5

6.0

6.5

4.5

Ext.

Video

in

41

8

A / V SW
LA7222

5

Picture

7

Picture
(from Camera)

(from AV )
Video

1

2

Ext.

Audio

in

11

55

AV

(FRONT)

Audio

Audio

Video

Camera

Monitor SW

LA7016

7

2

4

Audio

(Scart or Phono)

Optional

Parts

(from AV )

Audio

10

12 Melody

(from Micom )

(from AV)
Audio

HD

Trans

37,38

10,9

42,41,40

16,17,18

RGB

23

CVBS

TELETEXT(Parsi)
SAA5261

34,33,32

3,5,7

16,13,

11

1,4,6

1,2
4,5

14,15

16

18,19,20

SMPS

Controller

STR

F6707

5 3