Samsung CHB7227, CHB5237, CHB7709, CHB7707, CHB5707 Block Diagram
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10 Block Diagrams
CHB5**7L
CHB5**7L/6**7L/7**7L 10-1
TO D - COIL
ON THE CRT
CRT
-210V
( FROM FBT)
+12V
–210V
+30V
FOCUS1
SCREEN
R G B
H/V
VIDEO BOARD
MAIN BOARD
H-SYNC1
V-SYNC1
SDA
SCL
H-SIZE
VER.-BLANKING
(KSC945)
Q331
H/V OUTPUT
(SSP6N90)
Q504
G1
ACL
CIRCUIT
BRIGHTNESS
CONTROL
BRIGHTNESS
CONTROL
DEGAUSSING
BLOCK
RL601
AC-INLET
SOCKET
CN601
LINE FILTER
L601
CRT SOCKET BOARD
SOCKET
G1
HEATER
CONTRAST
CONTROL
CONTRAST
CONTROL
R G B
Video Pre-Amp
IC101(KA2506)
VIDEO OUTPUT
IC102(LM2407)
OSD DRIVE CONTROL
IC104(MC4320,
MC4322 MC4326)
R G B - CUTOFF
QR01, QR02,
QG01, QG02,
QB01, QB02
H-SYNC, V-SYNC
V-MUTE
S-CORRECTION
PS-1 (SUSPEND)
PS-2
(POWER-OFF)
HOR.LIN.
Power PWM
Control
(KA2S0680)
IC601
RECTIFIER
(1N5397GP)
D602,D603,
D604,D605
SWITCHING
TRANS.
T601
+75V
+13V
-10V
+7V
TO VIDEO
PS-1,PS-2 (FROM Micom)
CRT HEATER
+12V REGULATOR
+46V
+12V
PS-2
POWER-OFF MODE CONTROL
(Q622)
EPROM
(24LC04)
IC202
FRONT CONTROL BOARD
V-SYNC
H-SYNC,
HOR./VER. OSC
PROCESSOR
(TDA9109S)
MICOM
(BD24)
IC202
VER. - DY
CN301
FBT
T501
H.D.T
T401
VER. OUTPUT
(2N3904)IC301
High Volt.-DRIVE
Q503
HOR.-DRIVE
(KSP44)Q443
MENU EXIT
BRIGHTNESS
CONTRAST
ENTER
LED
POWER
VER. OUTPUT, TILT & H_Lin. control
I-SENSE
REGIN
TILT
S/Cable INPUT
& Video Gain
Control
CRT HEATER
PQ12RD11
HOR.OUT
(KSC5088)
Q447
HOR.DY
CN441~3
H/V PWM
CONTROL
IC501
TL494CN
HOR.DEF.
STEP-UP
IFR630
10 Block Diagrams
10-2 CHB5**7L/6**7L/7**7L
TO D - COIL
ON THE CRT
CRT
-210V
( FROM FBT)
+12V
–210V
+30V
FOCUS1,2
SCREEN
R G B
H/V
VIDEO BOARD
MAIN BOARD
VER.-BLANKING
GENERATOR
(Q301)
High Voltage
CONTROL
OUTPUT
G1
ACL
CIRCUIT
G1 VOLTAGE
CONTROL
DEGAUSSING
BLOCK
RL601
AC-INLET
SOCKET
CN601
LINE FILTER
L601
CRT SOCKET BOARD
SOCKET
SK1
G1
HEATER
R G B
S/Cable INPUT
Video Pre-Amp
IC101(KA2506)
VIDEO OUTPUT
IC102(LM2407T)
R G B - CUTOFF
CONTROL
H-SYNC, V-SYNC
V-MUTE
S-CORRECTION
LED
PS-1 (SUSPEND)
PS-2 (POWER-
OFF)
PWM CONTROL &
SWITCHING FET
IC601
RECTIFIER
(D602, D603,
D604,D605)
SWITCHING
TRANS.
T601
+75V
+13V
-10V
+7V
+13V
TO VIDEO
+12V REGULATION
CRT HEATER
To Audio Stand
+46V
+12V
HEATER
PS-2
POWER-OFF MODE CONTROL
(Q621, Q622)
2
EPROM
(24LC04B)
IC202
FRONT CONTROL BOARD
V-SYNC
H-SYNC,
HOR./VER. OSC
PROCESSOR
(TDA9109S)
IC401
MICOM
IC201
HOR.-DY
CN441
CN443
VER. - DY
CN301
High Voltage
CONTROL
IC501
FBT
T501
HOR.- OUT
Q447
H-DEF.
TRANS
T402
HOR.-DEF.
STEP-UP
VER. OUTPUT
IC301
High Volt.-DRIVE
Q503
HOR.-DRIVE
Q443
TILT
H-SYNC1
V-SYNC1
SDA
SCL
H-SIZE
MENU EXIT
BRIGHTNESS
CONTRAST
ENTER
LED
POWER
I-SENSE
REGIN
OSD DRIVE CONTROL
IC104(MC4320,
MC4322 MC4326)
DDC IC
(24LC21A)
IC203
H_Linearity
VER. OUTPUT, TILT & H_LIN. CONTROL
CHB6**7L
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