Table of Contents
Advertisement
5.7. COLOUR PURITY
1. Operate the TV set for over 60 minutes.
2. Receive a purity pattern signal. (white pattern)
3. Set Bright and Contrast controls to their maximum positions.
4. Set V-POS to 63 DAC.
5. Adjust roughly the static convergence magnets.
6. Fully degauss the picture tube using an external degaussing coil.
7. Loosen a clamp screw for the deflection yoke and move the deflection
yoke as close to the purity magnet as possible.
8. Adjust the purity magnet so that a vertical green field is obtained at the
center of the screen.
9. Slowly press the deflection yoke and set it where a uniform green field
is obtained.
17
Advertisement
Table of Contents
