在收看彩色电视机时不要频繁地转换预选器按钮开关,音量、彩色、对比度、亮度等旋钮也不要经常旋转。因为各个功能按钮、旋钮都有一定的使用极限次数,频繁地揿按、旋转、重压,均会缩短其使用寿命。彩色钮、对比度钮及亮度旋钮应配合调节,先旋小彩色钮,调节亮度、对比度旋钮,使黑白的图像最清晰,层次最分明,然后再逐渐旋大彩色钮,直到黑白图像上着上柔和的彩 Do not switch the preselector pushbutton switch frequently while watching the color TV. Do not rotate the knobs such as volume, color, contrast and brightness frequently. Because of the various function buttons, knobs have a certain number of use limit, frequently press, rotation, weight, will shorten the service life. Color button, contrast button and brightness knob should be adjusted with the first small color button, adjust the brightness, contrast knob, so that the most clear black and white images, the most obvious level, and then gradually large color button until the black and white image on the soft Color