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9. If the position of the dots moved after repeated
adjustments, adjust until the movement of the dots
is minimized.
10. Turn the red focus VR fully clockwise.
11. Adjust the 4-pole magnets until the shape of the
dots at the center of the screen is circular.
12. Adjust red focus VR until optimum focus is
achieved.
13. Apply NTSC monoscope pattern.
14. If the center of the monoscope pattern is not inside
the 15.0mm circle, shown in Figure 29, adjust the
centering magnets. Repeat the alignment magnet
adjustments and four pole magnet adjustments
(step 1. ~ step 12.).
Figure 29. Centering magnet
15. Apply an NTSC cross hatch pattern with dots.
16. Cover red and blue lenses projecting green only.
17. Repeat above procedures for the green.
18. Enable digital convergence by changing DAC D0f
from 1 to 0.
19. Following adjustments, paint position of DY
centering magnets and fix the centering magnets
of DY, dummy rings of VM coil, four pole magnets
of VM coil and the alignment magnets of VM coil to
prevent them from moving.
Note: Please
See
"Service
Controls)" on page 25 for entering and exiting
Service Mode.
Vertical Size Adjustment (D00)
1. Apply an NTSC monoscope pattern.
2. Cover red and blue lenses.
3. Set DAC D0F from 0 to 1 (disabling digital
convergence).
4. Adjust centering magnets so that the center of
pattern get aligned with screen frame center.
5. Adjust DAC D00 (V_Size) until vertical size is
4.0±0.1 on top and bottom lines. (See Figure 30)
Service Manual
6. Remove
Horizontal Phase Adjustment
1. Apply a monoscope pattern.
2. Set DAC D0F from 0 to 1 (disabling digital
3. Cover both red and blue lens so that only the green
4. Change H-Size DAC data (D03) to 63 (H_Size is
5. Turn Green Screen control clockwise (Figure 24)
6. Adjust H-Position DAC data (D04) until left size is
Picture
Area
7. Turn Green Screen control counter clockwise
Mode
(Electronic
8. Enable digital convergence by changing DAC D0F
9. Remove lens covers.
Trapezoid Adjustment (D06)
Procedures:
1. Cover Red and Blue Lenses.
1. Apply a crosshatch pattern.
2. Set DAC D0F from 0 to 1 (disabling digital
3. Adjust DAC D06 (trapezoid) by pressing VOL right-
4. Enable digital convergence by changing DAC D0F
- 18 -
lens
covers
convergence by changing Dac D0F from 1 to 0.
Figure 30. Vertical Size Adjustment
convergence).
lens is projecting the monoscope pattern.
minimum).
until all deflecting area appear.
6±0.1.
Figure 31. H Phase Adjustment
(Figure 24) until the area between deflecting area
and picture area disappear.
from 1 to 0.
convergence).
left to correct image (See Figure 32).
Correct Adjustment
Figure 32. Trapezoid Adjustment
from 1 to 0 and remove caps from lenses.
and
enable
digital
3.0
1.0
Screen
Frame
Deflecting
Area
Incorrect Adjustment
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