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1. VRS adjustment
Adjustment jig
Demagnetizer, color bar generator
TV screen (visual observation)
Measuring location
Input signal
Crosshatch pattern
6-pole convergence magnet
4-pole convergence magnet
Fig. 1
Board [L]
6 pole
converges
R/B with G
4 pole
converges
R with B
VRS magnets
2 pole (purity)
Setting of CY magnets (33 inch models)
6 pole
converges
R/B with G
4 pole
converges
R with B
2 pole (purity)
Setting of CY magnets (29 inch models)
Purpose: Adjusting the red, blue, and green electron beams so that they hit
the specified fluorescent substance correctly.
Purity magnet
Fig. 2
Magnet for VRS adjustment
VRS magnet
Open for the same angle
from the center.
VRS magnets
1. Receive a crosshatch pattern.
2. Confirm that the knobs of purity magnet, 4-pole
convergence magnet and 6-pole convergence magnet all
are aligned.
3. Loosen the screws fixing the deflection yoke and
provisionally fix the deflection at the very front position with
adjusted inclination.
4. Adjust the VRS magnet (Fig. 2) so that the horizontal lines
of the crosshatch pattern become level (Fig. 3).
5. Next, perform purity adjustment.
Fig. 3
Opening for VRS magnets
- 16 -
Center line of the crosshatch pattern
Adjust so that the curvature of the
center line becomes flat.
33 inch models
29 inch models
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