Panasonic TX-25V70T — настройка цветовой чистоты и конвергенции для телевизоров [9/50]

Before Colour Purity Convergence and White Balance adjustments are attempted V Height H Centre and Focus adjustments must be completed Colour Purity Convergence 1 Set the Brightness and Contrast controls to their maximum positions 1 Apply a crosshatch pattern signal and Normalize Contrast control to the maximum position 2 Operate the TV set for 30 minutes 2 Adjust Brightness until the grey portion of the crosshatch pattern just becomes black 3 Fully degauss the picture tube by using an external degaussing coil 4 Apply a crosshatch pattern signal and adjust the static convergence magnets to the approximately correct position 3 Adjust the Red and Blue line at the centre of the screen by rotating the R B static convergence magnetic rings Slide magnetic tabs toward or away trom each other 5 Receive a black and white signal 6 Set the controls as following Red minimum Green as it is Blue minimum Set the TV to Market mode and select CRT Adjustment Mode and then the Function button S1106 as per Fig 3 to select low lights 7 Loosen the clamp screw for the deflection yoke A in Fig 13 and move the deflection yoke as close to the purity magnet as possible 8 Adjust the purity magnetic rings so that a vertical green field is obtained at the centre of the screen Vertical Convergence Red Blue Rotate both magnetic rings together Horizontal Convergence Red Blue R B Static Convergence Magnet 4 Adjust Red and Blue with the 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 9 Slowly push the deflection yoke and set it where a uniform green field is obtained 10 Re adjust the Low Light controls to their correct settings and make sure that a uniform white field is obtained 11 Tighten the clamp screw A in Fig 13 7 Fix the deflection yoke by re inserting the DY wedges Refer to Fig 14 8 If purity error is found repeat Colour Purity adjustment