LG 21FX5REE Service Manual page 9

2) Enter the white balance adjust mode with a factory
remote control.
3) Adjust HIGh Light status of WDR R, WDR B at WDR G.
4) Make the Picture luminance 4.5±1 Ft-L by changing the
'contrast' and 'brightness'.
5) Adjust LOW Light status of CUT R, CUT B at CUT G.
6) Repeat 1) ~ 5) until both low and high have same color
temperature with below.
* Note: When adjusting white balance automatically, connect the
adjustment JIG in SVC mode. (When pressing IN-START,
MUTE button on remote control for adjustment orderly, it
changes to SVC mode and screen displays SVC.)
<Table 1> White Balance Color axis
EU
AXIS
X
288
Y
295
Color Temperature
9000°K
<Table 2> White Balance Initial Data
Menu Menu
LOW LIGHT CUT R
CUT G
CUT B
HIGH LIGHT WDR R
WDR G
WDR B
* White balance auto adjustment- Jig initial setting data
<Table 3> White Balance Initial Data
1. IC
Name
Maker
VCD IC VCT49xyi Micronas
EP_ROM 24C16 ST, ATMEL
2. White balance IIC Parameter
Program TWBeng_v049 Program
Vcd Slave BCF0 Eprom_Slave
R_Amp R_Cut
Program TWBeng_v049 TWBeng_v049
Sub Add 1C8 1C3
Start Bit 12 12
Stop Bit 4 4
Offset 0 0
Polarity 1 1
EP_Rom_S 9091 8A8B
Speed/ Plus 1 1
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N-EU
266
273
13000°K
Range DATA
0 ~ 511 60
0 ~ 511 60
0 ~ 511 60
0 ~ 511 400
0 ~ 511 400
0 ~ 511 400
Algorithm
0 A 0
TWBeng_v049 Speed Delay
AC 1 30
B_Amp B_Cut
TWBeng_v049 TWBeng_v049
1CA 1C5
12 12
4 4
0 0
1 1
9495 8E8F
1 1
- 9 -
6. SUB Brightness adjustment
Receiving signal : Digital pattern (PAL : EU05CH)
1) In the LINE SVC MODE(IN-START key), select
SERVICE11 change S-BRI by VOL ± key
2) Change S-BRI data till 2~3 Gray scale of the pattern can
be discerned.
7. Deflection setting Data Adjustment
7.1 preparation
(1) At adjustment mode(IN-START button on remote control of
adjustment), change to LINE SVC 2 mode to adjust the
deflection.
(2) Press Channel UP/DOWN button for desirous function
adjustment.
(3) Press Volume UP/DOWn button to adjust the data
(4) Tune the TV set receive a digital pattern.
7.2 Adjustment
<Note>
First, adjust deflection at 50Hz of PAL signal.
Then, adjust deflection at 60Hz of NTSC signal (RT)
In case of PAL only model, adjust deflection at 50Hz of PAL
signal.
Store the deflection adjustment data in EEPROM by using
ENTER button before adjusting PIP position.
After finishing deflection adjustment, press the ENTER button
to enter or exit PIP position.
(1) VA (Vertical Amplitude)
Adjust so that the circle of a digital circle pattern may be
located within the effective screen of the CPT.
(2) VL(Vertical Linearity)
Adjust so that the boundary line between upper and lower
half is in accord with geometric horizontal center of the
CPT.
(3) SC(S-Correction)
Adjust so that all distance between each horizontal lines
are to be the same.
(4) VS (Vertical Shift)
Adjust so that the horizontal center line of a digital circle
pattern is in accord with geometric horizontal center of the
CPT.
(5) HS(Horizontal Shift)
Adjust so that the vertical center line of a digital circle
pattern is in accord with geometric vertical center of the
CPT.
(6) EW(Horizontal Shift)
Adjust so that a digital circle pattern looks like exact circle.
(7) ET(East-west Trapezium)
Adjust to make the length of top horizontal line same with it
of the bottom horizontal line.
(8) EP(East-west Parabola)
Adjust so that middle portion of the outermost left and right
vertical line looks like parallel with vertical lines of th CPT.
(9) ES(East-west Symmetric)
Adjust until the upper and lower corner of the screen
symmetric.
(10) EC(East-west Corner)
After completing the EP adjustment, adjust so that the
corner vertical line to be straight..