Screen Position Adjustment - LG MW-60SZ12 Service Manual

4) Press the IN-START key on the R/C for adjustment to
enter adjustment mode.
5) Select NRS adjustment menu.
6) Use the VOLUME key to make the fewest vertical lines on
the screen with watching screen.
7) Press the ENTER key to come out of adjustment mode
when adjustment is finished.
6. Factory Default&RGB Gain/Offset
Adjustment
(1) Required Test Equipment
1) Pattern generator : 1EA
2) A remote control for adjustment : 1EA
(2) Sequence of Adjustment
1) Adjust the pattern generator to white/black window as Fig.
Below and connect to RGB1 Input terminal of the set.
2) Select RGB1 as Input signal.
3)Press the IN-START key on the R/C for adjustment to enter
adjustment mode and select Factory Default in adjustment
mode.
4) Press the ENTER key to operate Factory Default and enter
adjustment mode again and then select AutoGain in
adjustment menu.
5) Press the ENTER key to operate AutoGain and press the
Enter key to store AutoGain when adjustment is finished.

7. Screen Position Adjustment

(1) Required Test Equipment
1) Pattern generator : 1EA
2) A remote control for adjustment : 1EA
(2) Sequence of Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 5 min and over before adjustment.
3) Input the farthest outer pattern signal into pattern genera-
tor except DTV signal (Hat or Hatch pattern which has the
farthest line) and connect to RGB1 and then select Input
signal of set to RGB1.
4) Press IN-START key on the remote control to enter the
adjustment mode.
5) Select POSITION CONTROL of adjustment menu and
then select the H POSITION in SUB Menu.
6) Adjust H-Position so that the farthest line is shown and to
be symmetrical on the end of right/left screen.
7) Select the V POSITION in Menu.
8) Adjust V POSITION so that the farthest line is shown and
to be symmetrical on the end of top/bottom screen.
9) When finishing the adjustment, get out of adjustment mode
by pressing ENTER button on Remote Control.
7. White Balance &Gamma Adjustment
(1) Required Test Equipments
1) Illuminometer (name of model : CA-100) : 1EA —>
Measure color of projecting screen center
2) Pattern Generator : 1EA —> 16 step Gray Pattern, 64 step
Gray Pattern
3) A remote control for adjustment : 1EA
(2) Setting of Devices
MW-60SZ12
7-1 Sequence of Gamma manually adjustment
1) Prepare the PC Pattern Generator which is possible to out-
put R/G/B of 16 step and 64 step Gray Pattern.
2) Equipment composition : Follow Fig. 3.
3) Turn on the Jig for adjustment.
4) Select the RGB 1 by pressing the input select button on
Remote Control.
5) Output the 16 Gray Pattern in PC Pattern Generator.
Check it with the naked eye whether Screen Gamma and
W/B is right about each Gray.
If it's not, press the IN-START button on Remote Control
and then adjust the level data of each step manually in
sub menu of Gamma RGB.
6) Output the 64 Gray Pattern in PC Pattern Generator.
Check it with the naked eye whether Screen Gamma and
W/B is right about each Gray or whether there is Gamma
noise.
If there's any problem, press the IN-START button on
Remote Control and then adjust the level data of each
step manually in sub menu of Gamma RGB.
7) After finishing adjustment, exit adjustment mode by using
ENTER button on Remote Control.
7-2 Sequence of Gamma Auto Adjustment
1) Display the biggest WHITE PATTERN on screen and
change the 7050 R/G/B CONTRAST ( or 16th Gamma 1
R/G/B) data value of adjustment mode so that the white
balance of illumination system or illuminometer to be
x:283, y: 297(D9300K).
2) Measure the luminance value with changed data value in
clause 1.
3) Seek the luminance of each step so that each Gamma
value of 16 step to be 2.5 curve on a basis of luminance
value measured in clause 2. ( Maximum luminance *
(n1/16)** Maximum luminance : luminance measured
in clause 2)
N 1 : Each step unit (1.2.3.4,------15) when classify the sig-
nal level to 16 step.
4) Input the Gray pattern corresponding to the first luminance
and change the first adjustment mode R/G/B data value so
that the R/G/B data value to be same white balance with
1) above and luminance with 3) above.
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PC Pattern
Generator