Panasonic TX-21PS70TQ Service Manual ▷ View online
1. Apply a crosshatch pattern signal and Normalize Contrast control to the maximum positions.
2. Adjust Brightness until the grey position of the crosshatch pattern just becomes black.
3. Adjust the Red and Blue line at the centre of the screen by rotating the R-B static.
Fig. 8
4. Adjust Red and Blue with Green line at centre of the screen by rotating (RB)-G static
convergence magnetic rings.
5. Lock convergence magnets with silicone sealer.
6. Remove the DY wedges and slightly tilt the Deflection Yoke vertically and horizontally to obtain
the good overall convergence.
Fig. 9
7. Fix the Deflection Yoke by reinserting the DY wedges. Refer to Fig. 10.
8. If purity error is found, repeat “Colour Purity” adjustment.
Fig. 10
Fig. 11
Notes:
1. Wedge A, B and C should be inserted following the sequence of 1, 2 and 3 shown in Fig. 11.
2. The wedges should be set 120° apart from each other.
3. Be certain that three wedges are firmly fixed and the Deflection Yoke is tightly clamped in place.
Otherwise the Deflection Yoke may shift its position and cause a loss of convergence and purity.
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