LG FM776F, Руководство по обслуживанию

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BLOCK DIAGRAM
- 12 -
Input V
oltage
100~240V
AC
(50/60Hz)
Line Filter
Degaussing Cir
.
[ OSD Con
trol ]
Power
Control
IC
(IC901)
TIL
T
Control
Cir
.
6.3V
15V
E
2
PROM
(IC402)
5V
OSD IC (IC301)
H Sync.
sig
.
V Sync.
Sig.
I
2
C DA
T
A(SDA)
I
2
C CLOCK(SCL)
VIDEO
Pre
Amp.
(IC302)
Input
Signal
R G B
VIDEO
Main
Amp.
(IC303)
CUT
OFF
Circuit
(IC304)
80V
5V
V
ertical
Output
( IC601)
TDA4866J
H Defleciton
( Q706)
H-Linearity
Circuit
.
Dynamic
Focus Cir
.
- 120V
40V
15V
12V
MICOM (IC401)
SCL
/ SDA
H/V Sync S
ignal
PWM
Control Signal
15V
15V
50V
D
Y
CDT
Heater ( 6.
3V )
I
2
C
I
2
C
I
2
C
H/V Sync
Signal
Screen
H.V
R/G/B
Bias
R/G/B
Contrast
H Drive
B-Drive
B+
15V
I
2
C
BRIGHTNESS/CONTRAST COLOR CUR
VE
H
/
V
P
OSITION
H / V S
IZE
SPCC TRAPEZOID PIN BALANCE P
ARALLELOGRAM
TIL
T
T
O
P
CORNER
BOTT
OM CORNER
RECALL DEGAUSSING MOIRE LANGUAGE Audio Control -V
olume
-T
reble
-Bass -Balance -Microphone Audio Mute
850V
15V
6.3V
12V 80V
PURITY Control
Cir
.
15V
6.3V
Degaussing Coil
Dynomic Focus
Static Focus
TIL
T
Coil
PURITY Coil
50V
80V
5V
G2
G1
Auto Beam
Limit Circuit
DC/DC Converter
FBT
( T701 )
Regulation
Circuit
15V
SMPS (T901)
V
ertical Blanking,
Brightness Contorl
Circuit
X-RA
Y
Protection
Circuit
H/V Sync.
Processor
( IC701 )
TDA4841
D/D
Feed Back
Energy Savi
Sound (15V)
ng
Control Cir
V
oltage
Feedback
REGULA
T
O
R
(Q1)
AUDIO IN
T
O
PC
l C
2
9V
MIC
MIC OUT
AUDIO PRE-AMP
(IC1)
.
AUDIO MAIN-AMP
(IC2)
SPEAKER