طريقة ضبط التطابق الساكن والحركي .. كتاب التلفزيون الملون والعادي

11-16 How to adjust static and dynamic matching:

A - Adjusting static matching: It is the meeting of the three rays in the center of the screen when there is no current in the deflection coils.

This process takes place as follows:
1- Carrying out the normal adjustments that take place on a black and white TV set, namely: image adjustment - straightness - horizontal and vertical image stabilization - centering and focus operations, and others.

2- Operating the device in its usual place for a period of no less than (15 minutes) with the lowest possible lighting and on a non-working channel, in order to heat the mask evenly.

3- The static matching is set on a black and white image, by means of a signal generator that broadcasts a test pattern in the form of horizontal and vertical dots, or black and white lines, then adjusts the red-green-blue corrector magnet, and the side blue magnet until the dots are matched in the center of the screen.

​​​​​B - Kinetic Matching Adjustment: (Dynamic):

It is the matching of the three rays at their specified points in all. The kinetic matching takes place after the completion of the static matching and ensuring that the other controls are correct for a good image. Such as horizontal adjustment - vertical - focus - height - linearity - automatic gain circuit AGC. In some devices, the matching plate is located on the front of the device - the screws that secure this plate are loosened, and it may have a rail to slide outward on. Other devices have internal controls. The adjustment for kinetic matching is done as follows:

1- Set the device to a black and white image.

2 - Connect a signal generator of the form of points or cross lines, from the RF output to the
The location of the device's antenna input

3 - After placing the device on a cross-line pattern, the steps drawn in the matching board are completed

4 - The static, dynamic and color matching are re-corrected and adjusted until the image reaches the best quality.
5 - If the match is not complete. By means of the blue side magnet, it is possible to move the blue beam to the desired direction. Figure (11-51) shows instructions for adjusting purity and matching in the colored device. .

11-17 Adjusting color purity:

The device is operated for a period of no less than 15 minutes while the light switch is in its normal position. The following operations are carried out:

1- The device is tuned on a non-working channel to obtain the linear structure of the image illumination (raster), and the contrast switch is set to the lowest level, and the lighting switch is in the normal position.

2- The setting will be more accurate if it obtains one color, preferably red. It reduces blue and green to a lower level. If each color has a special tuning key. It is also possible to cancel these two colors by shortening the network governing each of them by means of a resistance of (100 kilos) with the separation of the last stage in the medium frequency amplifier.

3- Adjust the purity magnet to obtain the clear, radiant red color in all of the screen and its edges, and the appearance of different and overlapping colors indicates that the adjustment has not been completed, by unscrewing the skew coils and sliding them back to touch the matching magnets, then the ring magnet rotates until the red color appears in the middle.

4- The same process is repeated to obtain green and then pure blue on the entire screen.

5- ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ ​​​​​​​​​​The three color keys are turned back on to obtain a homogeneous gray-white color, and it is free from any other colors in any part of the screen.
6- Reset the static match if necessary. If it is found that the red color in the center of the screen moves when we reset the brightness, this indicates the need to re-adjust it at the beginning of adjusting the brightness and put it on the (Service) position, then return it to the position of the device’s setting instructions issued by its factory. static convergence.

7- If the device has a special key bearing the words (normal service), then it must be (normal) when the setting is finished.

Note: To get a good and guaranteed result, it is always preferable to refer to the device's setting instructions issued by its factory