Philips PS1966C122, Technical Service Data

Page: 21 / 79

2. Enter Service Alignment Mode (refer to Service Alignment Mode section).
3. Apply a center cross or crosshatch pattern to the antenna/cable input terminal.
4. Select the White Tone sub-menu by pressing the Menu Up/Down keys on the remote control so that
White Tone is highlighted.
5. Use the Menu Left/Right keys to enter the White Tone sub-menu.
6. Use Menu Up/Down keys to toggle between the options. Be sure to record the values of all options
(Normal Red/Green/Blue, Delta Cool Red/Green/Blue, and Delta Warm Red/Green/Blue).
7. Use the Menu Up/Down keys to select Normal Green, and use the Menu Left key to set Normal
Green to minimum.
8. Loosen the yoke clamp screw, pull the yoke back, and remove the three yoke wedges.
9. Slide the yoke all the way forward so that it rests against the bell of the CRT.
10 Tighten the yoke clamp screw so that the yoke does not drop away from the bell of the CRT.
11. Slowly spread, and if necessary, rotate the 2-Y pole purity rings so that the red and blue lines are at
least parallel and preferably coincide at the 6:00 and 12:00 positions as shown in the following linked
graphic "2Y Spread and 2X Rotate".
12. Proceed to the Color Purity Adjustment.
(Display the Convergence and Purity Assembly)
(Display the 2Y Spread and 2X Rotate Graphic)
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.
(Display the Convergence and Purity Assembly)