LG 177V, Руководство по обслуживанию

Страница: 8 / 33

BLOCK DIAGRAM
- 8
-
OSD
ON/OFF
SELECT
POWER
POWER INPUT
100~240VAC
(50/60Hz)
Line
Filter
Degaussing
Circuit
< OSD Control >
SMPS
TRANS
(T901)
SMPS
CONTROL
(IC901)
DPM
CONTROL
CIRCUIT
Voltage
Regulating
Circuit
80V
50V
15V
6.3V
TILT
Control
Circuit
6.3V
15V
E 2 PROM
(IC402)
H / V POSITION
BRIGHTNESS
CONTRAST
H / V SIZE
SPCC
TRAPEZOID
PIN BALANCE
PARALLELOGRAM
ROTATION
RECALL
DEGAUSS
COLOR CURVE
MOIRE
LANGUAGE
RESET
VIDEO LEVEL
OSD TIME
5V
OSD IC
(IC301)
MTV038-15
H-Sync Sig
V-Sync Sig
I
2
C DATA(SDA)
I 2 C CLOCK(SCL)
VIDEO
LM1269
PRE-AMP
(IC302)
Signal
Cable
R
G
B
VIDEO
LM2467
LM2480
CUT OFF IC
(IC304)
MAIN AMP
(IC303)
5V
5V
H/V Sync Processor
( IC701 )
TDA4857
V-OUT
( IC601)
TDA4866
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
15V
D/D Feed Back
15V
MICOM
(IC401)
SCL / SDA
H/V Sync,
PWM Control
15V
5V
15V
80V
15V
50V
DY CDT
Heater ( 6.3V )
I
2
C
I 2 C
I
2
C
H/V
Sync
G
1
S
c
re
e
n(G2)
Dyn
a
m
ic F
o
cu
s
S
ta
tic F
o
cu
s
H.V
R/G/B
Drive/Contrast
Cut-Off
H-DRV
B-DRV
B+
15V
TI
L
T
C
OIL
DEG
A
USS
ING
C
OIL
I
2
C
Vout 1
Vout 2