SAMSUNG 793DF Schematic Block Diagram

8 Block Diagrams

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8-1 LE15V*

LE15V*/LE17LS/LE17LT/
LE17KS/LE17KT/LE17JS/LE17JT

8-1

8 Block Diagrams

SCREE

N

RGB

VIDEO BOARD

TO D-COIL

ON THE CRT

VIDEO INPUT

IC106 STV9588

H/V SYNC

VIDEO OUTPUT

G1

HEATER

VIDEO PRE-AMP

+ OSD

SOCKET

H/V SIZE

REG.

VERTICAL

FOCUS

HOR. DY

CN401

VER. DY

CN401

H. D. T

T401

S-COR.

VER. OUTPUT

IC301 (SVT9325)

HORZ. DRIVE

Q401(70K ST2310

85K C5931, FJAF6916)

HORZ./VER.

PROCESSOR

IC401

H-SYNC1

V-SYNC1

E/W_OUT

12C DATA

12C CLK

REG.

V-MUTE

S-CORRECTION

BB

REF-OFF

HOR. LINEARITY

TILT

POWER

PWM CONTROL

IC601(8S0765)

BRIDGE

RETIFIER

EPROM

IC241

DEGAUSSING

BLOCK

RL601

UP, DOWN

BRIGHTNISS

CONTRASTER

PIN, TRAP

SIZE, POSI,

DEGA.

LED

POWER

AC INPUT

SOCKET

CN601

LINE

FILTER

L601

SWITCHING

TRANS

T601

POWER-OFF

MODE CONTROL & SYNC

ACL

CIRCUIT

CONTRAST

CONTROL

BRIGHTNESS

CONTROL

+50V

+13V

-12V

+6.3V

+80V

VER.OUT

HEATER VOLTAGE CONTROL

PRE-AMP-POWER

TILT REFERANCE VOLTAGE

+12V REGULATOR

CIRCUIT

OFF-MODE1

OFF-MODE2(FROM MCU)

CRT HEATER

G1

+12V

TO VIDEO

(FROM, MICOM)

-210V

+30V

+12V

CONTRAST

CONTROL

BRIGHTNESS

CONTROL

-210V

(FROM FBT)

VER. BLANKING

Q512, CN6520

Q622, Q624

24C08

FROM MCU

B(+)

FROM IC401

FBT

H-SYNC, V-SYNC

(STV9118)

T501

(70K CF2175B, FQM 17A011,

85K CF2166, FQM 17B015)

SIGNAL

MAIN BOARD

H/V

FOCUS

+5V REGULATOR

CIRCUIT

MCU

IC201

HOR. OUT

Q490 (70K IRF630B, 85K IRF634B)

DYNAMIC FOCUS

T561

(NT6813)

IC622 (7812)

Q321, Q322, Q323

8-2 LE17LS/LE17LT/LE17KS/LE17KT/LE17JS/LE17JT

8-2 LE15V*/LE17LS/LE17LT/

LE17KS/LE17KT/LE17JS/LE17JT