HITACHI CPX1402MS
Manual de Servicio

ALIGNMENT AND ADJUSTMENTS
General Alignment Instructions
1.Usually, a color CCTV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync and focus. 2.Observe the picture for good black and white details. There should be no objectionable color, shading; if color shading is present,demagnetize, perform purity and convergence adjustments described below. 3.Use the specified test equipment or its equivalent. 4.Correct impedance matching is essential. 5.Avoid overload. Excessive signal from a sweep generator might overload the front-end of the CCTV SET. When inserting signal markers, do not allow the marker generator to distort test results. 6.Connect the CCTV SET only to an AC power source with voltage and frequency as specified on the backcover nameplate. 7.Do not attempt to connect or disconnect any wires while the CCTV SET is turned on. Make sure that the power cord is disconnected before replacing any parts. 8. To protect against shock hazard, use an isolation transformer.

Automatic Degaussing
A degaussing coil is mounted around the picture tube, so that external degaussing after moving the CCTV SET should be unnecessary. But the receiver must be properly degaussed upon installation. The degaussing coil operates for about 1 second after the power is switched ON. If the set is moved or turned in a different direction, the power should be OFF for at least 10 minutes. If the chassis or parts of the cabinet become magnetized, poor color purity will result. If this happens, use an external degaussing coil. Slowly move the degaussing coil around the faceplate of the picture tube and the sides and front of the receiver. Slowly withdraw the coil to a distance of about 6 feet before turning power OFF. If color shading persists, perform the following Color Purity and Convergence adjustments.

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