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RASTER SLANT/POSITION, FOCUS & CONVERGENCE ADJUSTMENT
Caution :
These adjustments have been factory aligned. Do not attempt
to temper with these alignments. However, the effects of
adjacent receiver components, or replacement of picture tube
or deflection yoke may require the need to readjust these
adjustments.
●Raster Slant Adjustment
1. Preliminary steps
1) The lens focus and electrical focus must be provisional
alignment.
2) Disconnect P115B.
3) Tune the TV set to receive a digital pattern.
2. Adjustment
1) Set only green to be appeared on the screen.
2) Carefully rotate the DY of the green CRT so that the slant
of raster become the following figure.
Mechanical
center
L
3) Set two color (R or B and G) to be appeared on the
screen.
4) Set the slant of Red or Blue correspond to the green.
Note :
1. Tighten the tighten iron after loose completely
tighten iron which fixing DY when adjusting raster
slant and set position.
2. Never control to the tighten iron which fixed, it's
condition is not untied.
5) Connect P115B after finishing adjustment.
●Raster Position Adjustment
1. Preliminary steps
1) The lens focus and electrical focus must be provisional
alignment.
2) This adjustment should be performed after the raster
slant, the horizontal and the vertical adjustment.
3) Tune the TV set to receive a digital pattern.
2. Adjustment
1) Turn the centering magnet of Green CRT so that the
center of video signal correspond to geometrical center
of screen.
2) Tune the TV set to receive cross hatch signal and turn the
centering magnet of Red & Blue so that the center of
cross hatch pattern correspond to Green center.
●Lens and Electrical Focus Adjustment
1. Preliminary steps
1) The electrical focus, the raster slant and position must be
2) This adjustment should be performed after warming up
3) Tune the TV set cross hatch pattern.
4) Screen the optional two lens with a cover so that the
5) When turn the light the lens at front, chromatic aberration
Green
※ After focus adjustment, fix screw about 12~17kg.cm.
2. G-lens Adjustment
1) Turn the lens until the chromatic aberration changed 'Blue'
2) Viewing the all screen, in no case of the chromatic aberration
L ≤ 2mm
L
3) Switching the signal to digital pattern and operate
4) Adjust G-focus control volume of focus pack so that the
5) Adjust accurately by repeat the upper control.
6) Especially, noting to the G-light because it influenced on
3. R-lens Adjustment
1) Turn the lens until the chromatic aberration changed
2) Adjust the chromatic aberration so that it located center
3) Switching the signal to digital pattern and adjust it as
4) Adjust as same method of G-lens with Red focus control
- 19 -
provisional alignment.
for 30 minutes and in the dark room.
single color is appeared on the screen.
which appeared in bright line of cross-Hatch signal
changed as below.
Lens
Change of chromatic aberration
Red
Orange
Scarlet
Blue
Red
Blue
Purple
Green
to 'Red point'.
appeared slimly within 3.5 cross-Hatch of the picture center.
At this time, in case that the red chromatic aberration's bright
line isn't equal, adjust G-lens so that the red chromatic
aberration is appeared more than previous time.
adjustment minutely. At this time, adjust it by using the
revolution pattern of circumferencial picture's small circle.
external big circle's part appeared cleary.
picture's function.
orange to scarlet.
correctly.
same method of G-lens.
volume of focus pack.
CHROMATIC
ABERRATION
CROSS HATCH
SIGNAL
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