IBM E50 LG CB553H, Service Manual

Page: 7 / 31

BLOCK DIAGRAM
- 7
-
AC 90~264V INPUT
Line
Filter
Degaussing
Circuit
SMPS
TRANS
(T901)
SMPS
CONTROL
(IC901)
DPM
CONTROL
CIRCUIT
105V
50V
13V
6.3V
-10V
TILT
Control
Circuit
6.3V
13V
E
2
PROM
(IC402)
H / V POSITION
BRIGHTNESS
<OSD DISPLAY>
CONTRAST
H / V SIZE
UP/BOTTOM-CORNER
OSD TIME
TRAPEZOID
PIN BALANCE
PARALLELOGRAM
H/V MOIRE
COLOR
RECALL/RESET
LANGUAGE
DEGAUSS
INFORMATION
PINCUSHION
5V
OSD IC
(IC301)
H-Sync Sig
V-Sync Sig
I
2
C DATA(SDA)
I
2
C CLOCK(SCL)
VIDEO
PRE-AMP
(IC302)
Signal
Cable
R
G
B
VIDEO
MAIN AMP
(IC303)
5V
5V
H/V Sync Processor
( IC701 )
V-OUT
( IC601)
STV9302
H-OUT
( Q706)
H-Linearity
Correction
DC/DC Converter
X-RAY
Protection
Circuit
FBT
( T701 )
Auto
Beam
Limit
Vertical Blanking,
Brightness Control
- 160V
40V
13V
D/D Feed Back
5V
Regulator
12V
Regulator
12V
MICOM
(IC401)
SCL / SDA
H/V Sync,
PWM Control
12V
5V 13V
105V
13V
50V
DY CDT
Heater ( 6.3V )
I
2
C
I
2
C
I
2
C
H/V
Sync
G
1
S
c
reen
F
o
cu
s
H.V
R/G/B
Drive/Contrast
Cut-Off
H-DRV
B-DRV
12V
B+
13V
TI
L
T
C
OIL
DEG
A
USS
ING
C
OIL
I
2
C
Vout 1