Pre-Convergence Adjustments - Philips B8 Series Service Manual

can be accomplished through the use of the Purity and Convergence Assembly located on
the neck of the CRT.
Degaussing the Receiver
1. Position the TV receiver so that the screen faces the same direction (North, South,
East, or West) that it will be facing while in use.
2. Before the set is turned on, thoroughly Degauss the entire receiver.
a) Move a Degaussing Coil in a circular motion slowly around the sides and the front
face plate of the receiver.
b) Withdraw the Degaussing Coil from the receiver at least six feet before disconnecting
it from its power source.

Pre-Convergence Adjustments

(Perform Degauss Procedure first)
1. Place the multi-pole Purity and Convergence Assembly with the 2-Y pole Purity
Rings directly in the gap between the G2 and G3 (Focus Grids). (As shown in Figure
2)
2. Connect a Center Cross or Crosshatch pattern to the Antenna terminals.
3. Enter Service Page "G" (White Balance). Set the Green control to minimum.
4. Loosen the Yoke Clamp screws, pull the Yoke back and remove the three Yoke
wedges.
5. Slide the yoke all the way forward so that it rests against the bell of the CRT.
6. Tighten the Yoke Clamp screw so that the Yoke does not drop away from the bell of
the CRT.
7. 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 position.
8. Do not exit Service Page "G".