LG RE-44NB10RB, Service Manual, Page: 15 / 63

4) Adjustment must be done in a dark room(simple dark room)
Be careful not to touch the lens during adjustment.
5) Make any one color raster using lens covers.
6) Rotating lens right from the front side chromatic haze occurs
beside Cross-hatch line changes as follows;
* Note: Loosen the butterfly nut in
the lens tub slightly,being careful that it is mot loosened to the
point that the lens can move out of focus.
2. G-lens Adjustment
1) Turn the lens until the chromatic aberration changed Blue to
Red point.
2) Viewing the all screen, in no case of the chromatic aberration
appeared slimly within 3.5 cross-Hatch of the picture center. At
this time, in case that the red chromatic aberrations bright line
isn't equal, adjust Green lens so that the red chromatic
aberration is appeared more than previous time.
3) Switching the signal to 13CH or EU07 and operate
adjustment minutely.
4) Adjust Green focus control volume of focus pack so that the
external big circle's part appeared clearly.
5) Adjust accurately by repeat the upper control.
6) Especially, noting to the Green light because it influenced on
picture’s function.
3. R-lens adjustment
1) Turn the R-lens util the chromatic aberration changed
oranged to scarlet.
2) Adjust to appear Red chromatic aberration in right within 3.5
cross-hatch of the picture center. Adjust the chromatic
aberration so that it located center correctly
3) Switching the signal to 13CH or EU07 and adjust it as same
method of Green lens.
4) Adjust as same method of Green lens with Red focus control
volume of focus pack.
4. B- lens adjustment
1) Turn the B-lens until the chromatic aberration of 3.5 Cross-
hatch left from center point changes from purple to green.
2) Adjust as same as method of Green lens with Red focus
control volume of focus pack.
3) Adjust the R-focus control volume of focus pack as same
method of Green lens.
Note) After adjustment Red, Green & Blue lens, remove lens
cover and receive Cross-hatch pattern and check the overall
focus. If need, repeat above.
O
Convergence Adjustment
1. Preliminary steps
This adjustment should be performed after warming up 60
minutes.
1) Adjust after Horizontal/Vertical Raster position,Beam
alignment magnet, and focus adjustments have been
completed.
2) Do it always with crosshatch pattern.
3) Adjust for both PAL and NTSC system.
4) Use the JIG screen with the cross hatch pattern for
Adjustment.
2. Convergence Key
1) Convergence Mode : IN_START, ‘3’
2) Cursor shift :
F
,
G
,
D
,
E
3) Cursor Movement/Adjustment Selection : OK
4) Cursor Color Selection : TV/AV
5) Adjustment mode out : IN_START
*Note: When cursor flashes,set is in adjustment mode When
R,G or B selected color flashes,the set is in cursor movement
mode.
O
PAL Mode Adjustment
1. Preliminary steps
1) Receive the EU 05CH signal.
2) Press the buttons IN_START, ‘3’ of Remote Controller for
adjustment to get into the convergence adjustment mode.
2. Horizontal/Vertical phase adjustment
1) Press the buttons 9 & 5 to get into the phase adjustment
mode.
2) Horizontal Phase Adjustment.
Move the convex curve to the quarter of Vertical center by
pressing the Volume
F
/
G
button.
3) Press the OK button to escape from the adjustment.
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Lens
Red
Green
Blue
Change of chromatic aberration
Orange
¤A
Scarlet
Blue
¤A
Red
Purple
¤A
Green
CHROMATIC
ABERRATION
CROSS HATCH
SIGNAL