LG RT-44NZ21RB, Service Manual

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Raster Slope/Focus 1th Adjustment
1. Preliminary steps
1) Receive the EU 05 CH signal.
2) Adjustment Lens focus and Electric provisionally.
3) Set the convergence on RESET.
a.Adjustment mode:Press the SVC key and then press the
/
M key.
b.Data reset : Press 5 KEY and then OK key.
c.Adjustment mode cancellation : Press the
/
M key.
2. Adjustment
1) Display only the Green raster using lens covers to block Red
and Blue.
2) Rotate the Green DY and tilt the screen like the figure below.
3) Make 2color raster with Red or Blue and Green.
4) Superimpose the slope of red and blue raster onto that of the
Green.
Note)
When adjusting raster slope, loosen the DY and retighten it after
adjusting.Never rotate and adjust the fixed DY without loosening
it.
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Beam Alignment Adjustment
1. Test Equipment
Signal Generator that can produce DOT pattern
(401NPS or 5518/5418)
2. Preparation
1) Heat run over 60 minutes.
2) Pre-adjust Raster slope,Raster position & Lens focus&centering
Magnet.
3) Verify that the Magnet is located 45mm from the end of PRT.
4) Receive DOT pattern.
3. 2-Pole Magnet Adjustment
1) Display only the Green raster using lens covers to block Red
and Blue.
2) Check the center position of DOT pattern on the center of the
screen after turning Green focus volume left.
3) Turning green focus volume right and adjust 2-Pole magnet
so the position to coincide that of item 2).
4) Adjust not to shift the screen by turning green focus volume
left & right.
5) If the screen shifts, readjust 2)~4).
6) Do the same method in Red and Blue. Here, be careful not
to be stained.
4. Beam Shape (4 & 6-Pole Magnet) Adjustment
1) Do after adjustment of the 2-Pole magnet .
2) Display only the Green raster using lens covers to block Red
and Blue and turn the focus volume right.
3) Using the 4 & 6-pole magnets make adjustments so the DOT
in the center is a perfect circle.
4) Follow the same method in Red & Blue.
5) Fasten the Magnet after adjustment.
6) Adjust focus volume accurately and then adjust raster center.
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Centering Magnet Adjustment
1. Preliminary steps
1) Tune the TV set to receive a EU 05 CH.
2) Press the keys of Remote Controller for adjustment to reset the
convergence.
a.Adjustment mode:Press the SVC key and then press the
/
M key.
b.Data reset : Press 5 KEY and then OK key.
c.Adjustment mode cancellation : Press the
/
M key.
ADJUSTMENT INSTRUCTIONS
L
L
Mechanical
center
L
¡´
!
2mm
Red/Blue Light
Green Light
45mm
2 Pole Magnet
4 Pole Magnet
6 Pole Magnet