Samsung CKA4217, CKA5227 Block Diagram

8 Block Diagram

CKA42*7L/5227L 8-1

CRT

H/V

RGB

VIDEO

OUTPUT

RGB

VIDEO BOARD

FOCUS

SCREEN

HEATER

CRT DRIVE

RGB

CUTOFF CONTROL

HEATER G1

FOCUS

SCREEN

H/V

V-DY

CN301

-208V

1150V Pulse

FBT

T501

CN302

45V

HOR. FEEDBACK

12V

ABL

CIRCUIT

H-OUT

Q402

H-DRIVE

Q403, T401

CONTRAST

CONTROL

VR501, Q501

HOR-DEFLECTION

STEP-UP CONVERTER

(TO IC101)

V -BLANKING

52V

G1 (to Video Board)

BLANKING

CIRCUIT

Q510

5V

12V

5V REGULATION

IC603

12V REGULATION

IC604

13V

-12V

76V for Video

56V

FROM Micom

SUSPEND CONTROL Q602

CRT HEATER

7V

VIDEO

MAIN AMP

RGB

LM2406

CONTRAST CONTROL

(FROM MAIN BOARD)

Video Pre-Amp

IC101

VERT, OUTPUT

IC301

V-BLK

CIRCUIT

V-BLANKING

TRAP, PARA,

S/PIN, H-POSI,

Brightness Control

(FROM MAIN BOARD)

Q301

V-SIZE, V-POSI

H-OSC & V-OSC

H/V SYNC

RGB

H/V SYNC

D - SUB

POWER OFF

IC401

Micom

SIZE, POSITION

Q603, Q604

IC202

RECALL

FEED BACK

HOR FLYBACK

CONTROL

(FROM Micom)

GD, DEGAUSS,

OP601,IC601

PWM

IC602

CONTROL

DEGAUSSING

BLOCK

RL601, Q601

M/DEGAUSS

(FROM Micom)

MAIN BOARD

TO D - COIL

ON THE CRT

SWITCHING

TRANSFORMER

T601

RECTIFIER

D604~D607

LINE FILTER

L602

AC-INLET

SOCKET

IS601