LG RZ-48SZ40RB Service Manual page 16

8. Component Offset Adjustment
(1) Required Test Equipments :
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 5 minutes and over before adjustment.
3) Receive the Component 1 or 2.
4) Receive the 720P/60Hz, HozTVBar Pattern of 801GF
<Fig 7. 720P HozTVBar Pattern>
(3) Offset Adjustment
1) Press Adjust key on the remote control to enter the
adjustment mode after more than 10 seconds of receiving
the signals.
2) Press "4.AD9883 Adjust" to adjust.
3) When the OSD of "AD9883 Adjust End" appeared and
disappears,The adjustment is completed
(4) Component & RGB Mode White Balance passivity
adjustment
1) After inputting the 16 Gray pattern (RGB or Component),
check the White Balance status of Low Level (2-6 Gray
Level).
2) After Pressing the IN-START key of remote control, select
the AD9883 and press the
is able to adjust.
3) After selecting the adjustment mode with the channel key,
adjust Red Offset, Blue Offset value with the volume key to
adjust passively white Balance in Low Level.
adjustment limit : Red Offset - +/-2 step
9. White Balance & Gamma Adjustment
(1) Required Test Equipments
1) CA100 : 1EA
-> Measure colour of projecting screen center
[CA-110(name of model) is possible to measure White
Balance and Gamma - leave it 20Cm from screen center
[EU 05 CH]
G
key. - Red Offset, Blue Offset
Blue Offset - +/-4step
Follow a measurement machine manual to set CA-100and
CA-110 measurement machine.]
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 from 0 to 255 level.
(2) Equipment composition : Follow <Fig 2>
Adjust at 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 Adjust key to select 62352 and then select
RVREF, GVREF, BVREF in adjust mode
3) Adjust the luminance of CA100 to be below 0.75Cd by
volume key.(Range : 196~ 202)
4) Exit adjustment mode by pressing Adjust key.
5) Press the IN-START key on the remote control and select
the 7050 RGB Set of adjustment mode and then press the
G
key.
6) Check the data value of R contrast, Gconrast, B contrast is
515, Otherwise set the data 515 by using volume key.
(4) Adjustment Sequence
1) Output 255,255,255 signal of VDP TEST PATTERN, then
display maximum WHITE PATTERN on screen.
2) Gamma Adjust Mode is display as below when select
Gamma adjust by pressing ADJ key on remote control.
Gamma Adjust
R:1 G:2
80 100
234 216
453 411
--------------------------
--------------------------
724 690
3) Change the 16 Step RGB data to select white balance
x:283, y:297(D9300K).[48inch - X:269, Y:294;11000K]
4) Measure the luminance with changed data.
5) Set the every Gamma data of 16 step to 2.2 on the basis of
measured luminance data in 3)clause. (Max luminance
*(n1/16)**2.2)
--- Max luminance : measured luminance data n1 : every
step unit when separating 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 valance x=283,
y=297(D9300K) and measured step luminance in 5)clause.
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 valance x=283, y=297
and measured step luminance in 5)clause.
8) As shown above, output the VDP Test Pattern signal
(208/192/176/160/144/128/112/96/80/64/48/32/16) and
change the RGB data value of each step to come out white
balance x=283, y=294 and measured luminance in
3)clause.
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*First column : R adjustment data
B:3
display
100
*Second column : G adjustment
216
387
*Third column : B adjustment data
780
data display
display