Samsung 03 ALIGNMENT & ADJUSTMENT free download

File name 03_ALIGNMENT_&_ADJUSTMENT.PDF

Alignment and Adjustments 2. Alignment and Adjustments 2-1 General Alignment Instructions 1. Usually, a color TV-VCR needs only slight touch-up 5. Avoid overload. Excessive signal from a sweep adjustment upon installation. generator might overload the front-end of the TV. Check the basic characteristics such as height, When inserting signal markers, do not allow the marker horizontal and vertical sync and focus. generator to distort test results. 2. Observe the picture for good black and white 6. Connect the TV only to an AC power source with voltage details. There should be objectionable color shading; and frequency as specified on the backcover ameplate. if color shading is present, demagnetize, perform purity and convergence adjustments described below. 7. Do not attempt to connect or disconnect any wires while the TV is turned on. Make sure that the power cord is 3. Use the specified test equipment or its equivalent. disconnected before replacing any parts. 4. Correct impedance matching is essential. 8. To protect against shock hazard, use an isolation transformer. 2-2 Automatic Degaussing A degaussing coil is mounted around the picture tube, If the chassis or parts of the cabinet become so that external degaussing after moving the TV should magnetized, poor color purity will result. If this happens, be unnecessary. But the receiver must be properly use an external degaussing coil. Slowly move the degaussed upon installation. degaussing coil around the faceplate of the picture tube and the sides and front of the receiver. Slowly withdraw The degaussing coil operates for about 1 second after the coil to a distance of about 6 feet before turning the power is switched ON. If the set is moved or turned power OFF. in a different direction, the power should be OFF for at least 10 minutes. If color shading persists, perform the following Color purity and Convergence adjustments. 2-3 High Voltage Check CAUTION : There is no high voltage adjustment on this chassis. The B+ power supply should be +135 volts (with full color- bar input and normal picture level). 1. Connect a digital voltmeter to the second anode of the picture tube. 2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current). 3. Adjust the Brightness and contrast controls to bot