Screen Voltage Adjustment; White Balance Adjustment - LG RT-29FC90RB Service Manual

4-3. Convergence Adjustment
This adjustment should be operated at the best condition of
FOCUS after finishing the PURITY adjustment.
1) BACK RASTER receives black CROSS HATCH signal.
2) Adjust Brightness so that there are 9-12 dots.
3) Widen two tabs of 4pole Magnet with equal angles and
accord red, blue vertical lines at the center of screen.
4) With keeping angle of "c. clause", rotate tab and accord
red/blue, green vertical lines at the center of screen.
5) Widen two tabs of 6pole Magnet with equal angles and
accord red, blue vertical lines at the center of screen.
6) With keeping angle of "e. clause", repeat the adjustment from
c to e keeping in mind the movement of red, blue, green
when the horizontal lines are twisted.
7) 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.

5. Screen voltage Adjustment

5-1. Preparation for Adjustment
1) Connect power to TV Set and let POWER ON condition.
2) Operate screen more than 15 minutes before adjustment.
5-2. Adjustment Method
1) Adjust in no RF signal condition.
2) Press ADJ KEY on the R/C for adjustment and make
horizontal line.
Turn the Screen Volume so that horizontal line not to be
shown and then change oppositely to finish the adjustment
at the showing place.

6. White balance Adjustment

6-1. Preparation for Adjustment
1) This adjustment should be performed after screen voltage
adjustment.
2) Tune the TV set to receive an 100% white pattern.
6-2. Adjustment Method
1) Enter the adjust mode by pressing the IN-START button.
2) Press Channel UP/DOWN button for desirous function
Adjustment.
3) Press Volume UP/DOWN button to adjust the data.
4) Adjustment Sequence
a- Change the "CONTRAST", "BRIGHT" and adjust to be 3.5
Ft_L.
b- Adjust "Y" value of High Light with GD(G-Drive) and adjust
"X" value with BD(B-Drive) and make color coordinates
of High Light which is specified in "__clause".
c- Change the "CONTRAST", "BRIGHT" and adjust to be 4.5
Ft_L.
d- Adjust "Y" value of Low Light with GC(G-Cutoff) and
adjust "X" value with BC(B-Cutoff) and make color
coordinates of Low Light which is specified in "__clause".
e- Repeat the adjustment from 'a' to 'd' until the High, Low
color coordinates of "_clause" is satisfied.
f- Check the adjusted color coordinates with white balance
meter.
Color Tem.
13000K
9000K
Menu LG 32Ó WIDE
RC
GC
BC
RD
GD
BD
7. Deflection Data Adjustment
7-1. Preparation for Adjustment
1) Deflection Data Adjustment should be performed with the
remote controller for handset.
2) Enter the Adjustment mode by pressing the INSTART button.
3) Select the DEFLECT to deflection Data Adjustment.
4) Press the Channel UP/DOWN button to select adjustment
items.
5) Press the Volume UP/DOWN button to adjust the data.
6) The TV set receives PAL-B/G Digital pattern.
NOTE : If production line doesnÕt the production line of LG
TV,receive available deflection adjustment pattern.
VL (Vertical Linearity)
Adjust so that the boundary line between upper and lower half is in
accord with geometric horizontal center of the CPT.
VA (Vertical Amplitude)
Adjust upper and lower part of circle from the effective screen of
the CPT.to be distance of 6~7mm.
SC (Vertical ÒSÓ Correction)
Adjust so that all distance between each horizontal lines are to
be the same.
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.
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.
EW (Horizontal Width)
Adjust to that a digital circle pattern looks like exact circle.
EP (East-West Parabola)
Adjust so that middle portion of the outermost left and right vertical
line looks like parallel with vertical lines of the CPT.
- 9 -
X
Y
266 !8 273 !8
288 !8 295 !8
001F
0019
001F
001F
0019
001F
Memo
NON EU
EU
MENO
Low Light Adj
Low Light Adj
Low Light Adj
High Light Adj
High Light Adj
High Light Adj