Samsung CHA4217, CHA4227, CHA5227, CHA5807 Block Diagram

10 Block Diagram

CHA42*7L/5**7L 10-1

CRT

H/V

FOCUS

SCREEN

HEATER

To IC101

Horizontal

Blanking (Q510)

AFC

12V

From IC101

ABL CONTROL

FROM Micom

RGB

VIDEO

OUTPUT

RGB

VIDEO BOARD

LM2409

VIDEO

MAIN AMP

RGB

FOCUS

SCREEN

H/V

CRT DRIVE

HEATER G1

G1

Q101R,G,B

Q102R,G,B

RGB

CUTOFF CONTROL

1150V Pulse

FBT

T501

–210V

R521)

G1 Control

(Q504.R520,

V-DY

CN301

CN302

VERT, OUTPUT

IC301 (TDA9302H)

To IC101

45V

V-BLANKING

V-BLK

CIRCUIT

Q301

(KSC945)

D518, Q501

ABL CIRCUIT

H-OUT

Q402

(KSC5088)

H-DRIVE

Q403, T401

HOR. FEEDBACK

(KSC2331)

H-OSC & V-OSC

IC401 (TDA9109)

(KSC945)

HOR-DEFLECTION

STEP-UP CONVERTER

Q508 (IRF630A)

POWER OFF

CONTROL

Q603 (KSB1116),

Q604 (KSC945)

56V

5V REGULATION

FEED BACK

OP601 (LTV817),

IC601 (TL431)

5V

12V

IC603 (KIA7805)

12V REGULATION

Q605, Q606, C637,

D621, D622, D623

13V

-12V

76V for Video

56V

SWITCHING

TRANSFORMER

T601

SUSPEND CONTROL Q602 (KSC945)

CRT HEATER

6.3V

ABL Pre-Amp

IC101 (KA2504)

TRAP, PARA,

S/PIN, H-POSI,

BRIGHTNESS

CONTRAST CONTROL

V-SIZE, V-POSI

H/V SYNC

H/V SYNC

D - SUB

(FROM Micom)

Micom

IC202

(KS8896116N)

SIZE, POSITION

GD, DEGAUSS,

RECALL

HOR FLYBACK

MAIN BOARD

PWM

IC602

CONTROL

DEGAUSSING

BLOCK

RL601, Q601

M/DEGAUSS

(FROM Micom)

TO D - COIL

ON THE CRT

(KA2H0680)

RECTIFIER

LINE FILTER

(KSC945)

AC-INLET

SOCKET

D604~D607

(IN5397)

L602

IS601

Memo

10 Block Diagrams

10-2 CHA42*7L/5**7L