LG CG771B, Руководство по обслуживанию

Страница: 52 / 58

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V-SYNC INPUT
AND POLARITY
CORRECTION
EW-OUTPUT
H-PINCUSHION
H-CORNER
H-TRAPEZIUM
H-SIZE
HUNLOCK
OUTPUT
V-POSITION
V-SIZE, VOVSCN
PROTECTION
AND SOFT START
COINCIDENCE DETECTOR
FREQUENCY DETECTOR
TV MODE
V-SYNC
INTEGRATOR
X-RAY
PROTECTION
EHT COMPENSATION
H-SIZE AND V-SIZE
VERTICAL
OSCILLATOR
AND AGC
V-OUTPUT
V-LINEARITY
V-LINEARITY BALANCE
SUPPLY
AND
REFERENCE
H-OUTPUT
STAGE
H/C-SYNC INPUT
AND POLARITY
CORRECTION
PLL1 AND
H-POSITION
HORIZONTAL
OSCILLATOR
PLL2, PARALLELOGRAM,
PIN UNBALANCE AND
SOFT START
I C-BUS
RECEIVER
I C-BUS REGISTERS
VIDEO
CLAMPING
AND V-BLANK
OUTPUT
ASYMMETRIC
EW-CORRECTION
FOCUS
HORIZONTAL
AND VERTICAL
B+
CONTROL
2
2
V-sync
(TTL level)
14
19
18
16
17
clamping
blanking
HUNLOCK
SDA
SCL
V+
9.2V to 16V
10
7
9
25
26 27 28 29
H/C-sync
(TTL level)
15
(video)
8.2 nF
10 nF
100 nF
4.7 k
Ω
R
HREF
R
HREF
(1)
1%
2%
30
12 nF
1
2
HFLB X-RAY XSEL
6
4
3
5
8
32
20
13
B+ CONTOL
APPLICATION
(2)
X-RAY
HDRV
or
V OUT1
12
V
OUT2
EWDRV VSMOD HSMOD
7V
1.2V
11 31 21 22 24 23
EHT compensation
via horizontal size
EHT compensation
via vertical size
100
nF
100
nF
5%
1%
22 k
Ω
TDA4856
BLOCK DIAGRAM FOR TDA4856