Color Purity Adjustment - Philips B8 Series Service Manual

Color Purity Adjustment

1. Connect a White Screen signal to the Antenna terminals.
2. Use Service Page G to set the Green control to maximum. Set the Blue control to
minimum.
3. Enter Service Page A.
4. Note that the set is in bank ("00").
5. Press the Channel Up (Cursor Up) button on the Remote transmitter to change the
Register to 68.
6. Note the Value stored in Register 68 Value .......
7. Press the Volume down button on the Remote Transmitter to set the value to its
minimum (00).
8. Slowly spread the 2-X Pole Purity Rings to center the Green portion of the screen
leaving the same amount of Red on the right side as there is Blue on the left.
9. Loosen the Yoke Clamp screws and slide the Yoke back to the point of best Green
Purity.
10. Tighten the Yoke Clamp screw slightly so that the Yoke can still be moved with some
friction.
11. Proceed to Static Center Convergence.
12. Re-enter Service Page A, Bank 00 and Register 68.
13. Reset this register to the value noted in step 6.
14. Re-enter Service Page G and reset the Green and Blue Registers to their mid-range
positions.