Deflection Adjustment - LG 21FU6RLX Service Manual

g. Move DY up, down, left, right and make the convergence to be
optimal condition and stick rubber wedge to CPT so that the
DY not to move.
3.3 Screen Voltage &WHITE BALANCE Adjustment
3.3.1 Screen Voltage Adjustment.
a. Receive the NTSC or PAL-M/N signal into RF mode
( regardless of channel.)
b. If you press IN-START -> ADJUST , the LINE SVC mode
changes to screen adjustment mode.
c. Turn the Screen volume of FBT until the horizontal line is no
longer seen and then stop.
d. Press the EXIT button to exit Screen Adjust mode.
3.3.2 White Balance Adjustment
Prior to this adjustment, screen voltage adjustment must be finished.
1). Necessary Instrument
(a). White Pattern Generator (Can generate Low/High Light pattern)
(b). White Balance meter( CRT color Analyzer,CA-100)
(c). Factory Remote controller
2) Preliminary steps
(a). Tune the TV set to receive an 100% white pattern.
(b). Perform screen adjustment first.
3) Adjustment
(a). Enter into adjustment mode by "INSTART" key and
select SERVICE1 mode.
(b). Adjust the item with CH+/- Key.
(c). Adjust the data with VOL+/- Key.
(d). Adjustment Procedure
Adjust"CONTRAST"and "BRIGHT" so that the bright level
is 35Ft-L.
Select GG(G DRIVE) to adjust Y coordinate in High Light
and select RG(R DRIVE) to adjust X coordinate so that
the color coordinates in High Light match the vaInues in
Table below.
Adjust 'CONTRAST and "BRIGHT"so that the bright level
is 4.5Ft-L.
Select BLO-G(G CUT) to adjust Y coordinate in Low Light
and select BLO-R(R CUT) to adjust X coordinate so that
the color coordinate in Low light match the values in
Table below.
Repeat ~ until the color coordinates in High and Low
color satisfies the Table.
Check the adjusted color coordinates with the white
balance meter
. Store the W/B adjustment data in EEPROM by using
ENTER button before EXIT.
<Table 1> White Balance Coordinates
(Warning: Color coordinates is different for each Market.)
Tolerance Range : Adjust within ±3 for each X,Y coordinates
Item
X
Y
Chroma
<Table 2> White Balance Initial Data
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes.
EU
N-EU
288
268
295 273
9000° C
13000° C
LOW LIGHT BLO-R(R CUT)
BLO-G(G CUT)
HIGH LIGHT RG(R DRIVE)
GG(G DRIVE)
BG (B DRIVE)
[Table 3] W/B Automatic Instrument Table
CW62E WHITE BALANCE IIC PARAMETER
1. IC
Name
VCD IC
EP_ROM
2.White balance IIC Parameter (Address)
Program Win31_wb TWB
Vcd Slave 8A
B(R)_Amp
Program Win31_wb TWB
Sub Add 20
Start Bit 5
Stop Bit 0
Offset 0
Polarity 1
EP_Rom_S 36
Speed/ Plus 2
3.Color coordinate

3.4. Deflection Adjustment

Adjustment should be follow below sequence..
3.4.1. Preparation.
a. Tune the TV set to receive a Digital pattern (PAL : EU 05CH)
b. Use the adjust Remoconto set the Deflection Data.
c. At adjustment mode (IN-START button on remote control of
adjustment), changed to SERVICE 2 mode to adjust the
deflection.
D ,E
d. Press Channel
F ,G
e. Press Volume
If Line is not for LG TV SET, receive the avalible Pattern to adjust
Deflection.(Ex : Crosshatch + Circle)
3.4.2. Adjustment.
1. Deflection Data Adjustment should be follow below sequence.
a. Adjust at N50HZ(PAL) => N60Hz(NTSC) => Z60Hz => N50HZ
=> W50Hz => Z50Hz
b. This sequence is only for specific model which as a ARC
function.
Note : If adjust at N60Hz, every data will be changed to revised
data automatically compared with N60Hz
2. In case of NTSC only model, adjust deflection at 60Hz of NTSC
signal.
- 6 -
DATA
Item Range
PAL
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
Algorithm
Maker
0 0
Win31_wb TWB
Eeprom_Slave
A0
G_Amp
B(R)_Cut
Win31_wb TWB
Win31_wb TWB
21
17
5
0
0
1
37
33
2 2
button for desirous function adjustment..
button to adjust the data.
LGE Internal Use Only
Refer
32
32
32
32
32 Fixed
0 0
Speed Delay
1 30
G_Cut
Win31_wb TWB
18
5 5
0 0
0 0
0 0
34
2