Color Purity Adjustment - Philips 13PT30L1 Service Manual

Color Purity Adjustment

1. Connect a solid white pattern signal to the antenna/cable input terminal.
2. Use the Menu Up/Down keys to select Normal Blue, and use the Menu Left key to set Normal Blue to
minimum.
3. Use the Menu Up/Down keys to select Normal Red, and use the Menu Right key to set Normal Red to
maximum.
4. Slowly spread the 2-X pole purity rings to center the red portion of the screen, leaving the same amount of
green on one side of the screen as blue on the other side.
5. Tighten the yoke clamp screw slightly so that the yoke may be moved with some friction.
6. Proceed to the Static Center Convergence Adjustment.
Static Center Convergence Adjustment
1. Apply a center cross or crosshatch pattern to the antenna/cable input terminal and observe the screen to
ensure that the yoke is not tilted. If necessary, rotate the yoke to obtain a level raster.
2. Use the Menu Up/Down keys to select Normal Blue, and use the Menu Right key to set Normal Blue to
maximum.
3. Slowly spread, and if necessary, rotate the 4-pole magnetic rings to converge red and blue lines at the
center of the screen.
4. Use the Menu Up/Down keys to select Normal Green, and use the Menu Right key to set Normal Green to
maximum.
7. Slowly spread, and if necessary, rotate the 6-pole magnetic rings to converge red/blue on green lines at the
center of the screen.
8. Repeat steps three and five for optimum performance.
9. Proceed to the Dynamic Edge Convergence Adjustment.
Dynamic Edge Convergence Adjustment