Samsung 794MBplus, 796MBplus, 798MB Block Diagram

7 Block Diagrams

7-1

7 Block Diagram

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SCREE

N

RGB

VIDEO BOARD

TO D-COIL

ON THE CRT

VIDEO INPUT

LM2470

H/V SYNC

G1

HEATER

LM1246DED

LM2480

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

POW ER

PWM CONTROL

IC601(8S0765)

BRIDGE

RETIFIER

EPRO M

IC241

DEGAUSSING

BLOCK

RL601

UP, DOWN

BRIGHTNISS

CONTRASTER

PIN, TRAP

SIZE, POSI, DEGA.

LED

POW ER

AC INPUT

SOCKET

CN601

LINE

FILTER

L601

SWITCHING

TRANS

T601

POWER-OFF

MODE CONTROL & SYNC

ACL

CIRCUIT

CONTRA ST

CONTRO L

BRIGHTNESS

CONTRO L

+50V

+13V

-12V

+6.3V

+80V

VER.OUT

HEATER VOLTAGE CONTRO L

PRE-AMP-POW ER

TILT REFERANCE VOLTAGE

+12V REGULATOR

CIRCUIT

OFF-MODE1

OFF-MODE2(FROM MCU)

CRT HEATER

G1

+12V

TO VIDEO

(FROM, MICOM)

-210V

+30V

+12V

CONTRA ST

CONTRO L

BRIGHTNESS

CONTRO L

-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 BOA RD

H/V

FOCUS

+5V REGULATOR

CIRCUIT

MCU

IC201

HOR. OUT

Q490 (70K IRF630B, 85K IRF634B)

DYNAMIC FOCUS T561

IC623 (78R12)

Q321, Q322, Q323

7 Block Diagrams

7-2

Memo