Block diagram – LG 773N User Manual
Page 7
BLOCK DIAGRAM
- 7 -
POWER INPUT
100~240VAC
(50/60Hz)
Line
Filter
Degaussing
Circuit
SMPS
TRANS
(T901)
SMPS
CONTROL
(IC901)
DPM
CONTROL
CIRCUIT
Voltage
Regulating
Circuit
105V
50V
13V
6.3V
TILT
Control Circuit
6.3V
13V
E
2
PROM
(IC402)
5V
OSD IC
(IC301)
WT6805
H-Sync Sig
V-Sync Sig
I
2
C DATA(SDA)
I
2
C CLOCK(SCL)
VIDEO
STV9211
PRE-AMP
(IC302)
Signal
Cable
R
G
B
VIDEO
STV9556
MAIN AMP
(IC303)
5V
5V
H/V Sync Processor
( IC701 )
STV6888
V-OUT
( IC601)
STV9302
H-OUT
( Q706)
H-Linearity
Correction
DC/DC Converter
X-RAY
Protection
Circuit
FBT
( T701 )
Dynamic
Focus
Circuit
Auto
Beam
Limit
Vertical Blanking,
Brightness Control
- 160V
40V
400V
STEP UP
13V
D/D Feed Back
13V
MICOM
(IC401)
SCL / SDA
H/V Sync,
PWM Control
12V
5V
13V
105V
13V
-10V
50V
DY
CDT
Heater ( 6.3V )
I
2
C
I
2
C
I
2
C
H/V Sync
G1
Screen(G2)
Dynamic Focus
Static Focus
H.V
R/G/B
Drive/Contrast
Cut-Off
H-DRV
B-DRV
B+
13V
TIL
T
COIL
DEGA
USSING
COIL
I
2
C
-10V
Vout 1
Vout 2
OSD
ON/OFF
SELECT
POWER
< OSD Control >
H / V POSITION
H / V SIZE
SPCC
TRAPIZODE
PIN BALANCE
PARALLELOGRAM
ROTATION
RECALL
DEGAUSS
COLOR CURVE
MOIRE
LANGUAGE
RESET
VIDEO LEVEL
BRIGHTNESS CONTROL
OSD TIME