LG RU-52SZ30 Service Manual page 15

3) Select 10. H_position with channel key in adjust mode.
4) Adjust data with using the left/right key on the remote con-
trol in order to be left/right semmetry screen. (Three blocks
of the most outer block must be located the most outer
block.)
(4) Adjustment for Vertical Position
1) Select 16. V_position with channel key in adjust mode.
2) Change the data to symmetrized upper and down of
screen(refer to Fig. 4) and then press the IN-START but-
ton on Remote Control to get out of adjustment mode.
(Fig. 4) Adjustment for Horizontal/Vertical Position on Screen
5-3. Component2 Offset Adjustment
(1) Required Test Equipment
A remote control for adjustment, 801GF
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 15 min and over before adjustment.
3) Receive the Component2.
4) Receive the 720P and HozTVBar Pattern of 801GF.
HozTVBar Pattern
(3) Offset Adjustment
1) Press IN-START key on the Remote Control to enter the
adjustment mode after more than 10 seconds of receiving
the signals.
2) Press 7. AD9883 adjust to adjust .
3) When the AD9883 Gain Adjust is appeared after AD9883
Offset Adjust, the adjustment is completed.
5-4. Adjustment of White Balance and Gamma
(1) Required Test Equipments
1) Illuminometer (name of model : CA-100) 1EA —>
Measure color of projecting screen center
[ CA-110(name of model) is possible to measure White
Balance and Gamma —- leave it 20Cm from screen
center
Follow a measurement machine manual to set CA-100
and CA-110 measurement machine.
US13CH
2) Pattern Generator 1EA —> 16 step Gray Pattern, 64 step
Gray Pattern
3) Set Fixation Stand 1EA
4) Remote Control 1EA
5) Circuit thing Jig for adjustment(Except Drive Board Assy of
adjustment model)
--- Programmed Digital Board so that the VDP Test Pattern
can output white signal by 1 level form 0 to 255 level.
(2) A equipment composition
Adjust at the same condition of equipment composition diagram.
(3) Preparation for Adjustment
Compose the equipment follow Fig. 2 and place the set on
the fixation stand.
1) Select the VDP Test Pattern signal to R1, G1, B1.
2) Press the IN-START key to select 4. 62352 and then select
5. RVREF, 8. GVREF, 12. BVREF in adjust mode.
3) Adjust the luminance of CA100 below 0.75Cd. (The adjust-
ment range is 196~202)
4) Exit adjustment mode by pressing IN-START button on
Remote Control.
5) Press the IN-START key on R/C and select 3. 7050 RGB
Set.
6) Check the data 1. RContrast, 8. GContrast, 15. BContrast
is 515. Otherwise set the data 515 by using volume button.
(4) Adjustment Sequence
1) Output the 255,255,255 signal of VDP Test Pattern, then
display the maximum white pattern on screen.
2) Gamma Adjust Mode is display as below when select 5.
Gamma adjust by selecting IN-START key on R/C.
Gamma Adjust Mode
1 80 100
2 234 216
3 453 411
16 724 740
RGB 456 Step123
3) Change the 16 Step RGB Data to select white balance
x=283, y=297(D9300K).
4) Measure the luminace with changed data.
5) Set the every Gamma data of 16 step to 2.2 on the basis
of measured luminance data in 3).
(Max luminance *(n1/16)**2.2) — Max luminance : mea-
sured luminance data n1 = every step unit when separat-
ing signal level to 16 step)
6) Output the 240, 240, 240(15th data in max white output
signal level) in the VDP Test Pattern, change the 15th
RGB Data value to come out white balance x=283,
y=297(D9300K) and measured step luminance in 5).
7) Output the 224, 224, 224(14th data in max white output
signal level) in the VDP Test Pattern, change the 14th
RGB Data value to come out white balance x=283,
y=297(D9300K) and measured step luminance in 5).
- 15 -
* 1st Column : 16 Step Level
100
* 2nd Column : R Adjustment
216
Data
387
* 3rd Column : G Adjustment
Data
* 4th Column : B Adjustment
780
Data